A method and apparatus for transmitting multicast traffic
Technical Field This application relates to the field of communication, more specifically, relates to a method for transmitting Multicast service, management device, the gateway device, access network equipment and terminal equipment. Background Art In recent years, with the rapid development of the construction of a network, the global broadband rate increase gradually. The emergence of new business in a large amount, to the network continuously put forward a faster rate requirements. Some ancient and traditional wired connection mode is unable to meet the demand of the broadband service speed, through a significant deployment of the optical fiber to upgrading to the access network. However, in some old city or some sparsely populated remote areas, laying a very high price of the optical fiber, the construction cost is high, therefore, in order to meet this scene broadband access demand, wireless access has become a possible option. For family broadband access, Internet television (internet protocol television, IPTV) is one kind of them important business. IPTV including direct seeding class and on-demand (video on demand, VoD) service. Wherein the IPTV of live television program (live TV) is a typical example of IP Multicast (IP multicast) service, the content server, in the middle of the route node between the terminal equipment and circulated through the Multicast mode; while the selection and broadcast class program in the content server to the terminal device through the unicast distribution. Each of the IPTV in a live channel program, can be used as a Multicast service, is assigned a Multicast address, the Multicast address by a representative of the corresponding set of recipient. For he wishes to receive IP Multicast service terminal, through the va management protocol (internet group management protocol, IGMP) or Multicast interception discovery protocol (multicast listener discovery protocol, MLD) request to join a Multicast service/withdraw from the corresponding Multicast IP address, in order to begin to receive the end of the/corresponding to the Multicast service, a user channel switching process, it is to leave the Multicast service/process. In addition, there are still some such as information or content push, Multicast manner can also be used for enhancing transmission efficiency, to reduce the pressure of the feedback network. Therefore, in the wireless network architecture, needs to take into account the Multicast service. Content of the invention The present invention provides a system for transmitting Multicast service, management device, the gateway device, the access network device and a terminal device, so that the in the wireless access system, can support Multicast service, it is compatible with the Internet television service, reduces the cost of the operator providing the Multicast service. 1st aspect, provides a method for transmitting Multicast service, including: the management equipment receives the 1st message, the 1st message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, request receiving or the end of the instruction of the 1st Multicast service, request receiving or the end of the 1st of the Multicast service identification of the terminal device, the terminal device serving access network equipment identification; the management apparatus notifies the gateway device to the terminal device or the access network device sending the 1st Multicast service data packet, or the management apparatus notifies the gateway device to stop by the terminal device or the access network device sending the 1st Multicast service data packet. Therefore, in the present application, management apparatus notifies the gateway device to the terminal device or access network device sending the 1st Multicast service data packet and management apparatus notifies the gateway device to stop by the terminal device or the access network device sending the 1st Multicast service data packet, so that the wireless under the scene can be Multicast service access, it is compatible with the Internet television service, reduces the cost of the operator providing the Multicast service. Optionally, in a 1st in realizing the way in, the method also includes: the management apparatus according to the 1st message, update Multicast member table, wherein the Multicast member table comprises the following any one or any of a plurality of: establishing a connection with the Multicast service the corresponding identification, has been established with the requesting the connection of the Multicast service corresponding to the identification of the terminal device, and, and services the request has been established for the connection of the Multicast service terminal equipment access network equipment of the corresponding identification. Optionally, in a 1st in realizing the way in, the method also includes: the management apparatus according to the 1st message, update Multicast member table, including: The management apparatus in the Multicast member table, increase with said terminal apparatus and the 1st Multicast service corresponding to the information item; or, The management apparatus in the Multicast member table, with said terminal apparatus and the 1st Multicast service information corresponding to the entry is placed in force; or, The management apparatus in the Multicast member table, delete with said terminal apparatus and the 1st Multicast service corresponding to the information item; or, The management apparatus in the Multicast member table, with said terminal apparatus and the 1st Multicast service information corresponding to the entry is placed in the invalid; or, The management apparatus in the Multicast member table, with the increase of the access network equipment and the 1st Multicast service corresponding to the information item; or, The management apparatus in the Multicast member table, with the access network equipment and the 1st Multicast service information corresponding to the entry is placed in force; or, The management apparatus in the Multicast member table, to delete the access network equipment and the 1st Multicast service corresponding to the information item; or, The management apparatus in the Multicast member table, with the access network equipment and the 1st Multicast service information corresponding to the entry is placed in the invalid; Wherein The is connected to the terminal equipment and the 1st Multicast service information corresponding to the entry includes the 1st Multicast service with the corresponding identification, and with said terminal device corresponding identification; The with the access network equipment and the 1st Multicast service information corresponding to the entry includes the 1st Multicast service with the corresponding identification, with the access network device and the corresponding identification. Optionally, in a 1st in realizing the way in, the method also includes: the management apparatus notifies the gateway device with the network equipment to the establishment of the 1st Multicast service connection. Optionally, in a 1st in realizing the way in, the method further including: in the Multicast member table effective information items including the 1st does not exist in the Multicast service information entries, the management apparatus notifies the gateway device is disconnected from the network equipment on the establishment of the 1st Multicast service connection. Optionally, in a 1st in realizing the way in, the method also includes: the management apparatus sends the message 2nd, the 2nd message used to query the management apparatus of the services in the network, whether there is a request to receive the 1st Multicast service of the equipment, the 2nd message comprises the 1st Multicast service with the corresponding identification, the apparatus includes a terminal apparatus and access network equipment; Or, the 2nd message used to query the management apparatus of the services in the network, whether there is a request to receive any Multicast service of the apparatus, the apparatus includes a terminal apparatus and access network equipment. Optionally, in a 1st in realizing the way in, with said terminal device corresponding identification comprises the following information in any one of or any of a plurality of: The identification of the terminal device, the terminal device sets up the connection session identifier, bearing the terminal device, the terminal device of the session or the bearing corresponding to the tunnel ID, service terminal equipment access network equipment identification, service of the terminal and identification of the cell. Optionally, in a 1st in realizing the way in, the management device to the access network device sends the 2nd configuration information, the configuration information comprises the following information 2nd in any one or any of a plurality of: used for pointing out the gateway device to the access network device sending the 1st Multicast service data packet of the 1st of the indication information, and/or, the access network device to said terminal device sending the 1st Multicast service data packet of the 2nd indication information of the, Wherein the gateway device to the access network device sending the 1st of the Multicast service in the form of data packets, the gateway device to unicast or Multicast mode to the access network device sending the 1st Multicast service data packet; said access network device to said terminal device sending the 1st of the Multicast service in the form of of the data packet, the access network equipment in order to unicast or Multicast manner to the said terminal equipment sends the 1st Multicast service data packet. Optionally, in a 1st in realizing the way in, the management device to the access network device sends the 3rd message, the message including the 3rd: to be added or deleted with the 1st of the Multicast service members by said access network device services in the terminal equipment of the corresponding identification, and, with the 1st Multicast service the corresponding identification; the 1st the Multicast service members comprises a request receiving the 1st Multicast service of the terminal device. Optionally, in a 1st in realizing the way in, the management function of the device and the function of the gateway device is arranged in the in the same equipment. Optionally, in a 1st in realizing the way in, the management apparatus for obtaining the 1st Multicast service quality of service parameters; The management device to the access network device transmitting the quality of service configuration described, The quality of service configuration description with the 1st Multicast service a service corresponding to the identification of mass flow QoS flow, and with the quality of service parameters corresponding to the QoS flow, or, The quality of service configuration description with the 1st Multicast service corresponding to the identification of the bearing, and with the bearing corresponding to the quality of service parameters. Optionally, in a 1st in realizing the way in, the management device to the gateway device sending 4th message, the 4th message comprises the following any one of or any of a plurality of: a 1st 1st indicating information of the configuration information, to be added or deleted with the 1st of the Multicast service members by the gateway equipment service in the terminal equipment of the corresponding identification, or by states gateway equipment service access network equipment of the corresponding identification, and with the 1st Multicast service identification corresponding to; The 1st indication information is used to indicate the 1st Multicast service data packet of the gateway device and the access network device between the indication information of the transmit mode. Optionally, in a 1st in realizing the way in, the management device to the gateway device sending the 1st Multicast service stream of configuration information, the 1st Multicast service stream configuration information comprising said 1st Multicast service related service data flow template SDF template, the SDF template comprising at least one packet-filtering rules, used for the gateway device according to the packet filtering rules, the received 1st Multicast service data packet is mapped onto the Multicast service matching of the 1st transmitted on the QoS flow. 2nd aspect, provides a method for transmitting Multicast service, including: the gateway apparatus receives the network device to send the data packet of the 1st Multicast service; the gateway device to the access network device sending the 1st Multicast service data packet, wherein the gateway device to the access network device sending the 1st Multicast service data packet, including, the gateway device to the Multicast mode to the access network device sending the 1st Multicast service data packet, or, the gateway device in a unicast manner to said access network device sending the 1st Multicast service data packet. Therefore, in the present application, the gateway apparatus receives the network device to send the data packet of the 1st Multicast service; the gateway device to the access network device sending the 1st Multicast service data packet, so that the wireless access system, the gateway device can access the Multicast service, it is compatible with the Internet television service, reduces the cost of the operator providing the Multicast service. Optionally, in a 2nd in realizing the way in, the gateway device to the Multicast mode to the access network device sending the 1st Multicast service data packet, including: The gateway device through the 1st channel to the access network device sending the 1st Multicast service data packet, the 1st 1st channel for transmission of the data packet of the channel of the Multicast service; or, The gateway device through the 1st channel to the access network device sending the 1st Multicast service data packet, the 1st channel is used for transmitting a plurality of different Multicast service data packet channel. Optionally, in a 2nd in realizing the way in, the gateway device in a unicast manner to said access network device sending the 1st Multicast service data packet, including: The gateway device the received data packet in accordance with the 1st of the Multicast service request receiving the 1st Multicast service a number of terminal devices copy; after the copy obtained after the Multicast service of the 1st 1st identification included in the data packet, the 1st mark used to indicate the request to receive the 1st Multicast data packet of the business terminal equipment; The gateway device to the multicasting manner to the access network device sending the 1st Multicast service data packet, including: The gateway device the received 1st Multicast service request of a data packet in accordance with the 1st Multicast service terminal equipment service access network equipment of the number of copy; after the copy obtained after the Multicast service of the 1st 2nd identification included in the data packet, the 2nd mark used to indicate the 1st Multicast service. 3rd aspect, provides a method for transmitting Multicast service, including: access network device receives a 1st of the gateway device of the Multicast service data packet; The access network device according to the Multicast member table, to the terminal apparatus sending the 1st Multicast service data packet; wherein said access network device to said terminal device sending the 1st Multicast service data packet, including: the access network equipment in order to Multicast manner to the said terminal equipment sends the 1st Multicast service data packet, or, the access network device in a unicast manner to the said terminal equipment sends the 1st Multicast service data packet. Optionally, in a 3rd in realizing the way in, the access network device receives the message from the management device of the 3rd, the 3rd message comprises the following any one of or any of a plurality of: addition or deletion of Multicast member indicating, with the addition or deletion of terminal equipment identification corresponding to, and with the 1st Multicast service the corresponding identification; or, The access network device is received from the terminal equipment of the 5th message, the 5th information as the information is used for receiving a request by the terminal device or the end of the 1st Multicast service message, the 5th in the message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, with said terminal device corresponding identification. Optionally, in a 3rd in realizing the way in, the access network device according to the 5th 3rd message or the message, the updating of the Multicast member table, the Multicast member table includes: establishing a connection with the Multicast service the corresponding identification, and/or, with the request to receive the pre established connection of the Multicast service corresponding to the identification of the terminal device; said method comprising: The access network equipment in the Multicast member table, increase with said terminal apparatus and the 1st Multicast service corresponding to the information item; or, The access network equipment in the Multicast member table, with said terminal apparatus and the 1st Multicast service information corresponding to the entry is placed in force; or, The access network equipment in the Multicast member table, delete with said terminal apparatus and the 1st Multicast service corresponding to the information item; or, The access network equipment in the Multicast member table, with said terminal apparatus and the 1st Multicast service information corresponding to the entry is placed in the invalid; Wherein The is connected to the terminal equipment and the 1st Multicast service information corresponding to the entry includes: 1st Multicast service with the corresponding identification, and with said terminal device corresponding identification. Optionally, in a 3rd in realizing the way in, the access network device to the management device sends a 6th message, the 6th message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, request receiving or the end of the 1st Multicast service instructions, request receiving or the end of the 1st of the Multicast service identification of the terminal device, the access network device identification. Optionally, in a 3rd in realizing the way in, with said terminal device corresponding identification comprises the following information in any or any of a plurality of: The identification of the terminal device, the terminal device sets up the connection session identifier, bearing the terminal device, the terminal device of the session or bearing the corresponding tunnel identifier. Optionally, in a 3rd in realizing the way in, the access network device according to said Multicast member table, to the terminal apparatus sending the 1st Multicast service of Multicast service data packet, including: In the access network device according to any one of the following or any of a number of, determining the access network equipment in order to Multicast or unicast manner to the said terminal equipment sends the 1st Multicast service data packet: request receiving the 1st Multicast service a number of terminal devices, receiving a request for the 1st Multicast service of the terminal device to the access network device the link quality of the, the management device to send the used to indicate the access network device to said terminal device sending the 1st Multicast service data packet of the 2nd of the indication information. Optionally, in a 3rd in realizing the way in, the access network device in a unicast manner to the said terminal equipment sends the 1st Multicast service data packet, including: the access network device the received data packet in accordance with the 1st of the Multicast service request receiving the 1st Multicast service a number of terminal devices copy; the access network device in copy obtained after the Multicast service in the data packet of the 1st 1st identification after adding, to the request receiving the 1st of the terminal device sends the Multicast service, the 1st mark used to indicate the request to receive the 1st Multicast service of the terminal device. 4th aspects, provides a method for transmitting Multicast service, including: 1st terminal device obtains the Multicast service session connection indication information, The 1st terminal device according to said Multicast service session connection indication information, to the access network device to send the request information to the 1st, the 1st request information for requesting the establishment of a support the Multicast service connection session. Optionally, in a 4th in realizing the way in, the method also includes: the terminal device receives the 1st 2nd 7th message sent by the terminal device, the 7th message comprises the following in any one or any of a number of: 1st Multicast service with the corresponding identification, request receiving or indicating the end of the Multicast service 1st, 2nd terminal equipment identification; The 1st terminal device obtains the Multicast service session connection indication information, including: The 7th 1st terminal device the message as a Multicast service session connection indication, the 7th message comprises a request receiving 1st Multicast service instructions; or The terminal device according to 1st application layer service request obtaining Multicast service session connection instructions; or The 1st terminal equipment according to the pre-information obtaining Multicast service session connection indication. Optionally, in a 4th in realizing the way in, the method also includes: the 1st terminal equipment to the access network device sends the 8th message, the 8th message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, request receiving or the end of the instruction of the 1st Multicast service, the identification of the terminal device corresponding to the 1st, the 2nd terminal equipment identification. Optionally, in a 4th in realizing the way in, the method also includes: The terminal equipment receives the 1st 2nd terminal device to the 7th message, the 1st terminal equipment can according to the 7th message, update Multicast member table, Wherein the Multicast member table comprises the following any one or any of a plurality of: with the 1st terminal equipment can receive the Multicast service identification, and the 2nd terminal equipment with the corresponding identification. Optionally, in a 4th in realizing the way in, the 1st terminal equipment can according to the 7th message, update Multicast member table, including: The 1st terminal equipment in the Multicast member table, added with the 2nd terminal equipment and 1st Multicast service corresponding to the information item; or, The 1st terminal equipment in the Multicast member table, with the 2nd terminal equipment and 1st Multicast service information corresponding to the entry is placed in force; or, The 1st terminal equipment in the Multicast member table, to delete the 2nd terminal equipment and 1st Multicast service corresponding to the information item; or, The 1st terminal equipment in the Multicast member table, with the 2nd terminal equipment and 1st Multicast service information corresponding to the entry is placed in failure; Wherein The terminal equipment with the 2nd and the 1st Multicast service information corresponding to the entry includes the 1st Multicast service with the corresponding identification, and the 2nd terminal equipment with the corresponding identification; the 2nd terminal equipment with the corresponding identification, comprising the following in any one or any of a number of: the 2nd the identification of the terminal device, the terminal device to the 2nd 1st between the terminal equipment interface/port identification, the 2nd terminal device to the 1st between the terminal equipment and the bearing or logical channel identification. 5th aspects, provides a management device, comprising: receiving module, used for receiving the 1st message, the 1st message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, request receiving or the end of the instruction of the 1st Multicast service, with the request receiving or the end of the 1st of the Multicast service corresponding to the identification of the terminal device, the terminal device serving access network equipment identification; Sending module, is used for notifying the gateway device to the terminal device or the access network device sending the 1st Multicast service data packet, or the management apparatus notifies the gateway device to stop by the terminal device or the access network device sending the 1st Multicast service data packet. Optionally, in a 5th in realizing the way in, the management device further comprises a processing module, the processing module is used in particular for: can be according to the 1st message, update Multicast member table, wherein the Multicast member table comprises the following any one or any of a plurality of: establishing a connection with the Multicast service the corresponding identification, has been established with the requesting the connection of the Multicast service corresponding to the identification of the terminal device, and, and services the request has been established for the connection of the Multicast service terminal equipment access network equipment of the corresponding identification. Optionally, in a 5th in realizing the way in, the processing module is used in particular for: The management apparatus in the Multicast member table, increase with said terminal apparatus and the 1st Multicast service corresponding to the information item; or, The management apparatus in the Multicast member table, with said terminal apparatus and the 1st Multicast service information corresponding to the entry is placed in force; or, The management apparatus in the Multicast member table, delete with said terminal apparatus and the 1st Multicast service corresponding to the information item; or, The management apparatus in the Multicast member table, with said terminal apparatus and the 1st Multicast service information corresponding to the entry is placed in the invalid; or, The management apparatus in the Multicast member table, with the increase of the access network equipment and the 1st Multicast service corresponding to the information item; or, The management apparatus in the Multicast member table, with the access network equipment and the 1st Multicast service information corresponding to the entry is placed in force; or, The management apparatus in the Multicast member table, to delete the access network equipment and the 1st Multicast service corresponding to the information item; or, The management apparatus in the Multicast member table, with the access network equipment and the 1st Multicast service information corresponding to the entry is placed in the invalid; Wherein The is connected to the terminal equipment and the 1st Multicast service information corresponding to the entry includes the 1st Multicast service with the corresponding identification, and with said terminal device corresponding identification; The with the access network equipment and the 1st Multicast service information corresponding to the entry includes the 1st Multicast service with the corresponding identification, with the access network device and the corresponding identification. Optionally, in a 5th in realizing the way in, the sending module is used in particular for: the management apparatus notifies the gateway device with the network equipment to the establishment of the 1st Multicast service connection. Optionally, in a 5th in realizing the way in, the sending module is used in particular for: in said Multicast member table effective information items including the 1st does not exist in the Multicast service information entries, the management apparatus notifies the gateway device is disconnected from the network equipment on the establishment of the 1st Multicast service of the Multicast connection. Optionally, in a 5th in realizing the way in, the sending module is used in particular for: the management apparatus sends the message 2nd, the 2nd message used to query the management apparatus of the services in the network, whether there is a request to receive the 1st Multicast service of the equipment, the 2nd message comprises the 1st Multicast service with the corresponding identification, the apparatus includes a terminal apparatus and access network equipment; Or, the 2nd message used to query the management apparatus of the services in the network, whether there is a request to receive any Multicast service of the apparatus, the apparatus includes a terminal apparatus and access network equipment. Optionally, in a 5th in realizing the way in, with said terminal device corresponding identification comprises the following information in any one of or any of a plurality of: identification of the terminal device, the terminal device sets up the connection session identifier, bearing the terminal device, the terminal device of the session or the bearing corresponding to the tunnel ID, service terminal device of the access network device identification, and service of the terminal equipment of the cell identification. Optionally, in a 5th in realizing the way in, the processing module is used for: The management device to the access network device sends the 2nd configuration information, the configuration information comprises the following information 2nd in any one or any of a plurality of: used for pointing out the gateway device to the access network device sending the 1st Multicast service data packet of the 1st of the indication information, and/or, the access network device to said terminal device sending the 1st Multicast service data packet of the 2nd of the indication information, Wherein the gateway device to the access network device sending the 1st of the Multicast service in the form of data packets, the gateway device to unicast or Multicast manner to the access network device sending the 1st Multicast service data packet; said access network device to said terminal device sending the 1st of the Multicast service in the form of of the data packet, the access network equipment in order to unicast or Multicast manner to the said terminal equipment sends the 1st Multicast service data packet. Optionally, in a 5th in realizing the way in, the sending module is used in particular for: 3rd to the access network device to send the message, the message including the 3rd: to be added or deleted with the 1st of the Multicast service members by said access network device services in the terminal equipment of the corresponding identification, and, with the 1st Multicast service identification corresponding to; the 1st the Multicast service members comprises a request receiving the 1st Multicast service of the terminal device. Optionally, in a 5th in realizing the way in, the management apparatus also includes: obtaining module, used for obtaining the 1st Multicast service quality of service parameters; the sending module for sending the quality of service to the access network device configuration described, wherein the quality of service configuration description 1st Multicast service with the associated quality of service flow QoS flow identification, and the QoS flow identifier corresponding to the quality of service parameters. Optionally, in a 5th in realizing the way in, the management function of the device and the function of the gateway device is arranged in the in the same equipment. Optionally, in a 5th in realizing the way in, the sending module is used in particular for: to the gateway device sending the 4th 4th message the message comprises the following any one of or any of a plurality of: a 1st 1st indicating information of the configuration information, to be added or deleted with the 1st of the Multicast service members by the gateway equipment service in the terminal equipment of the corresponding identification, or by states gateway equipment service access network equipment of the corresponding identification, and with the 1st Multicast service identification corresponding to; The 1st indication information is used to indicate the 1st Multicast service data packet of the gateway device and the access network device between the indication information of the transmit mode. Optionally, in a 5th in realizing the way in, the sending module is used in particular for: To the gateway device sending the 1st Multicast service stream of configuration information, the 1st Multicast service stream configuration information comprising said 1st Multicast service related service data flow template SDF template, the SDF template comprising at least one packet-filtering rules, used for the gateway device according to the packet filtering rule, the received 1st Multicast service data packet is mapped onto the Multicast service matching of the 1st transmitted on the QoS flow. 6th aspects, provides a gateway device, comprising: receiving module, used for receiving the network device to send the 1st Multicast service data packet; sending module, which is used to access network device sending the 1st Multicast service data packet, wherein the parallelism access network device sending the 1st Multicast service data packet includes, the gateway device to the Multicast mode to the access network device sending the 1st Multicast service data packet, or, the gateway device in a unicast manner to said access network device sending the 1st Multicast service data packet. Optionally, in a 6th in realizing the way in, the sending module is used in particular for: through the 1st channel to the access network device sending the 1st Multicast service data packet, the 1st 1st channel for transmission of the data packet of the channel of the Multicast service; or, through the 2nd channel to the access network device sending the 1st Multicast service data packet, the 2nd channel is used for transmitting a plurality of different Multicast service data packet channel. Optionally, in a 6th in realizing the way in, the sending module is used in particular for: the received data packet in accordance with the 1st of the Multicast service request receiving the 1st Multicast service a number of terminal devices copy; after the copy obtained after the Multicast service of the 1st 1st identification included in the data packet, the 1st mark used to indicate the request to receive the 1st Multicast data packet of the business terminal equipment; The sending module is used in particular for: the received 1st Multicast service request of a data packet in accordance with the 1st Multicast service terminal equipment service access network equipment of the number of copy; through the resulting 1st Multicast service in the data packet includes the 2nd identification, the 2nd mark used to indicate the 1st Multicast service. The gateway device can be carried out in the 2nd or 2nd in the realization of any can be selected in the mode of method. 7th aspects, provides an access network device, comprising: receiving module, for receiving from the 1st of the gateway device of the Multicast service data packet; sending module, according to the Multicast member table, to the terminal apparatus sending the 1st Multicast service data packet; wherein said access network device to said terminal device sending the 1st Multicast service data packet, including: the access network equipment in order to Multicast manner to the said terminal equipment sends the 1st Multicast service data packet, or, the access network device in a unicast manner to the said terminal equipment sends the 1st Multicast service data packet. Optionally, in the 7th aspect of the realizing the way in, the receiving module is used in particular for: Receiving the message from the management device of the 3rd, the 3rd message comprises the following any one of or any of a plurality of: addition or deletion of Multicast member indicating, with the addition or deletion of terminal equipment identification corresponding to, and with the 1st Multicast service the corresponding identification; or, The receiving module-specific is used for receiving the 5th message from the terminal equipment, the 5th information as the information is used for receiving a request by the terminal device or the end of the 1st Multicast service message, the 5th in the message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, with said terminal equipment identification. Optionally, in the 7th aspect of the realizing the way in, the access network apparatus includes the processing module, the processing module is used in particular for: update Multicast member table, the Multicast member table includes: establishing a connection with the Multicast service the corresponding identification, and/or, with the request to receive the pre established connection of the Multicast service corresponding to the identification of the terminal device; The processing module is used in particular for: In the Multicast member table, increase with said terminal apparatus and the 1st Multicast service corresponding to the information item; or, In the Multicast member table, with said terminal apparatus and the 1st Multicast service information corresponding to the entry is placed in force; or, In the Multicast member table, delete with said terminal apparatus and the 1st Multicast service corresponding to the information item; or, In the Multicast member table, with said terminal apparatus and the 1st Multicast service information corresponding to the entry is placed in the invalid; Wherein The is connected to the terminal equipment and the 1st Multicast service information corresponding to the entry includes: 1st Multicast service with the corresponding identification, and with said terminal device corresponding identification. Optionally, in the 7th of realizing the way in a, the access device to the management device sends a 6th message, the 6th message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, request receiving or the end of the instruction of the 1st Multicast service, request receiving or the closure of the 1st of the Multicast service identification of the terminal device, the access network device identification. Optionally, in the 7th of realizing the way in a, with said terminal device corresponding to the identification comprises the following information in at least one of: identification of the terminal device, the terminal device is connected to the establishment of the session identifier, bearing the weight of the terminal device, the terminal device of the session or bearing the corresponding tunnel identifier. Optionally, in the 7th aspect of the realizing the way in, the processing module is used in particular for: according to the following in any one or any of a number of, determining the access network equipment in order to Multicast or unicast manner to the said terminal equipment sends the 1st Multicast service data packet: request receiving the 1st Multicast service a number of terminal devices, receiving a request for the 1st Multicast service of the terminal device to the access network device the link quality of the, the management device to send the used to indicate the access network device to said terminal device sending the 1st Multicast service data packet of the 2nd of the indication information. Optionally, in the 7th aspect of the realizing the way in, the processing module is used in particular for the received data packet in accordance with the 1st of the Multicast service request receiving the 1st Multicast service a number of terminal devices copy, ; said processing module for the access network device in copy obtained after the Multicast service of the 1st 1st identification after adding in the data packet, the sending module-specific for said request receiving the Multicast service data packet 1st of the terminal device sends the, the 1st mark used to indicate the request to receive the 1st Multicast service data packet of the terminal device. 8th aspect, provides a terminal device, the terminal device is a 1st terminal apparatus, including: Sending module, according to the Multicast service session connection indicating, to the access network device to send the request information to the 1st, the 1st request information for requesting the establishment of the Multicast service session. Optionally, in the 8th in one implementation, the acquisition module is used in particular for receiving 2nd 7th message sent by the terminal device, the 7th message comprises the following in any one or any of a number of: 1st Multicast service with the corresponding identification, request receiving or indicating the end of the Multicast service 1st, 2nd terminal equipment identification; The obtaining module is used in particular for: the 1st terminal device the 7th message as a Multicast service session connection indication, the 7th message comprises a request receiving 1st Multicast service instructions; or The terminal device according to 1st application layer service request obtaining Multicast service session connection instructions; or The 1st terminal equipment according to the pre-information obtaining Multicast service session connection indication. Optionally, in a 8th in realizing the way in, the sending module is used in particular for to the access network device sends the 8th message, the 8th message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, request receiving or the end of the instruction of the 1st Multicast service, the identification of the terminal device corresponding to the 1st, the 2nd terminal equipment identification. Optionally, in the 8th in one implementation, the acquisition module is used in particular for receiving the 2nd terminal device to the 7th message; said terminal device further comprises a processing module, can be according to the 7th message, for updating Multicast member table, Wherein the Multicast member table comprises the following any one or any of a plurality of: 1st terminal equipment has already joined the Multicast service identification, and with the requesting the Multicast service corresponding to the identification of the 2nd terminal equipment. Optionally, in a 8th in realizing the way in, the processing module is used in particular for the 1st terminal equipment in the Multicast member table, added with the 2nd terminal equipment and 1st Multicast service corresponding to the information item; or, The 1st terminal equipment in the Multicast member table, with the 2nd terminal equipment and 1st Multicast service information corresponding to the entry is placed in force; or, The 1st terminal equipment in the Multicast member table, to delete the 2nd terminal equipment and 1st Multicast service corresponding to the information item; or, The 1st terminal equipment in the Multicast member table, with the 2nd terminal equipment and 1st Multicast service information corresponding to the entry is placed in failure; The terminal equipment with the 2nd and the 1st Multicast service information corresponding to the entry includes the 1st Multicast service with the corresponding identification, and the 2nd terminal equipment with the corresponding identification; the 2nd terminal equipment with the corresponding identification, comprising the following in any one or any of a number of: the 2nd the identification of the terminal device, the terminal device to the 2nd 1st between the terminal equipment interface/port identification, the 2nd terminal device to the 1st between the terminal equipment and the bearing or logical channel identification. 9th aspects, provides a chip system, comprising: at least one processor, the at least one processor for executing the stored instructions, so that the management apparatus can be carried out in the 1st 1st aspect or any one of the selectable in the realization way method. 10th aspects, provides a chip system, comprising: at least one processor, the at least one processor for executing the stored instructions, so that the gateway device can be carried out in the 2nd or 2nd in the realization of any can be selected in the mode of method. The eleventh aspects, provides a chip system, comprising: at least one processor, the at least one processor for executing the stored instructions, so that the access network device can be performed in the 3rd or 3rd in the realization of any can be selected in the mode of method. Twelfth aspects, provides a chip system, comprising: at least one processor, the at least one processor for executing the stored instructions, so that the access network device can be carried out in the 4th 4th or can be selected in any of the of the method of realizing the way in. The thirteenth aspects, provides a computer program product, the computer program product includes an instruction, when the instruction is executed, so that the management apparatus can be carried out in the 1st 1st aspect or any one of the selectable in the realization way method. The fourteenth aspects, provides a computer program product, the computer program product includes an instruction, when the instruction is executed, so that the gateway device can be carried out in the 2nd or 2nd in the realization of any can be selected in the mode of method. The fifteenth aspects, provides a computer program product, the computer program product includes an instruction, when the instruction is executed, so that the access network device can be performed in the 3rd or 3rd in the realization of any can be selected in the mode of method. The sixteenth aspects, provides a computer program product, the computer program product includes an instruction, when the instruction is executed, the terminal device can be carried out in the 4th 4th or can be selected in any of the of the method of realizing the way in. The seventeenth aspects, provides a communication system, including: management device, and/or, the gateway device, and/or, access network equipment, and/or the terminal device, the management apparatus can be carried out in the 1st 1st or can be selected in any of the of the method of realizing the way in, the gateway device can be carried out in the 2nd or 2nd in the realization of any can be selected in the mode method, the access network device can be performed in the 3rd or 3rd in the realization of any can be selected in the mode of method, the terminal apparatus can be carried out in the 4th 4th or can be selected in any of the of the method of realizing the way in. The eighteenth aspects, provides a computer storage medium, the computer-readable storage medium storing the program instructions, when the instruction is executed, the management apparatus can be carried out in the 1st 1st or can be selected in any of the of the method of realizing the way in, the gateway device can be carried out in the 2nd or 2nd in the realization of any can be selected in the mode method, the access network device can be performed in the 3rd or 3rd in the realization of any can be selected in the mode of method, the terminal apparatus can be carried out in the 4th 4th or can be selected in any of the of the method of realizing the way in. Description of drawings Figure 1 is the illustrative diagram of according to the application of a system for transmitting Multicast service method and wireless communication system architecture. Figure 2 is the illustrative diagram of according to the application of a system for transmitting Multicast service method and wireless communication system architecture. Figure 3 is according to the application of a multicasting service data packet in the transmission mode in the mobile network. Figure 4 is according to the application of a multicasting service data packet in the transmission mode in the mobile network. Figure 5 is according to the application of a multicasting service data packet in the transmission mode in the mobile network. Figure 6 is according to the application of a multicasting service data packet in the transmission mode in the mobile network. Figure 7 is the illustrative flow chart of according to the present application a method for transmitting Multicast service. Figure 8 is the illustrative flow chart of according to the present application a method for transmitting Multicast service. Figure 9 is the illustrative flow chart of according to the present application a method for transmitting Multicast service. Figure 10 is the illustrative flow chart of according to the present application a method for transmitting Multicast service. Figure 11 is the illustrative flow chart of according to the present application a method for transmitting Multicast service. Figure 12 is the illustrative flow chart of according to the present application a method for transmitting Multicast service. Figure 13 is the illustrative flow chart of according to the present application a method for transmitting Multicast service. Figure 14 is the illustrative flow chart of according to the present application a method for transmitting Multicast service. Figure 15 is the illustrative flow chart of according to the present application a method for transmitting Multicast service. Figure 16 is the illustrative diagram of the management device according to this application. Figure 17 is the illustrative diagram of the gateway device according to this application. Figure 18 is the illustrative diagram of the access network device according to this application. Figure 19 is the illustrative diagram of the terminal device according to this application. Figure 20 is the illustrative diagram of provided by the application of the communication device. Mode of execution The lower portion of the Figure, in the application to the technical proposal described. Figure 1 is the illustrative diagram of according to the application of a system for transmitting Multicast service method and wireless communication system architecture 100. As shown in Figure 1, the framework of the system 100 include, terminal equipment 110, access network device 120, the core network apparatus 130, and data network 160 (data network, DN), wherein the core network apparatus 130 includes managing the apparatus 140 and the gateway device 150. Wherein Figure 1 in the terminal device 110 can be used for through the wireless air interface is connected to the deployment of the access network equipment of the operator 120, then through the core network apparatus 130 is connected to the data network; access network device 120 is mainly used to realize wireless physical layer function, resource scheduling and radio resource management, wireless access control and mobility management and the like; the core network apparatus 130 can include management apparatus 140 and the gateway device 150, management device 140 is mainly used for the registration of a terminal device, the security authentication, mobility management and position management, gateway device 150 is mainly used for terminal equipment to establish a channel, the channel transmitted on the terminal device and the external data network data packet between the; data network 160 may correspond to a plurality of different service domain, such as the IP multimedia subsystem (IP multimedia subsystem, IMS), Internet Internet, Internet protocol television (internet protocol television, IPTV), other operator service domain and the like, and is mainly used for terminal device provides a plurality of data service, which can include for example the server (including the provision of Multicast service server), router, gateway network equipment. For he wishes to receive the data packet IP Multicast service terminal, through the group management protocol request to join a Multicast service/withdraw from the corresponding Multicast IP address, in order to begin to receive the end of/the Multicast service, IP Multicast group management protocol in the IPv4 in the IGMP protocol, corresponding in IPv6 in MLD protocol. It should be stated, Figure 1 is only illustrative frame patterning, in addition to the Figure 1 shown in addition to the functional unit, the network framework may also include other functional unit or functional entity, the embodiment of the invention is not limited to this. When chart 1 shown is the communication network 5 G network, the terminal device can be a user equipment (user equipment, UE), such as: mobile phone, computer, also can be a cellular telephone, a cordless telephone, a session initiation protocol (session initiation protocol, SIP) phone, smart phone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), computer, laptop computer, hand-held communication equipment, hand-held computing device, the satellite wireless device, the wireless modem card, television set-top box (set top box, STB), customer premises equipment (customer premise equipment, CPE) and/or for communication of the wireless system on the other device. The network access equipment can access network (access network, AN)/wireless access network (radio access network, RAN) equipment, by a plurality of 5 G - AN/G 5 - RAN network of nodes, the 5 G - AN/G 5 - RAN node can be: the access node (access point, AP), the next generation base station (NR nodeB, gNB), the central unit (central unit, CU) and distributed unit (distributed unit, DU) separate the shape of gNB, receiving and transmitting point (transmission receive point, TRP), transmission point (transmission point, TP) or a certain other access node. The core network apparatus can include: access and mobility management function (access&mobility function, AMF), session management function (session management function, SMF), a policy control function (policy control function, PCF), the user plane function (user plane funtion, UPF) as function of the unit, these functional units can work independently, can also be combined together to achieve certain control function, such as: AMF, SMF and PCF can be combined together as the management apparatus, for the completion of the terminal equipment access authentication, security encryption, position registration access control and mobility management function, and the establishment of a user plane transmission path, such as the release and change session management function, and some of the slice (slice) analysis of the related data (such as congestion), terminal equipment-related data function, UPF as gateway device completes the user plane routing of data forwarding functions, such as: to the terminal equipment for data packet filtering, data transmission/forwarding, rate control, generating billing information and the like. Figure 2 is a part of the embodiment of the invention provides a 5 G network architecture schematic view, in Figure 2 shown in a part of the 5 G network, various function units can be next generation network (next generation, NG) interface to establish a connection to realize communication, such as: terminal device through the new wireless (new radio, NR) interface with the RAN device establishes the port connection, used for the transmission of the user plane data and the control plane signaling; terminal apparatus can be through NG interface 1 (hereinafter referred to as N1) with the control plane signaling connection establishment of AMF; AN/RAN equipment such as a next generation wireless access base station (NR NodeB, gNB), can be through the NG interface 3 (abbreviated as N3) with the establishment of the UPF user plane data connection; AN/RAN apparatus can be through NG interface 2 (hereinafter referred to as N2) with the control plane signaling connection establishment of AMF; UPF NG can be through the interface 4 (hereinafter referred to as N4) with the control plane signaling connection establishment SMF; UPF NG can be through the interface 6 (abbreviated as N6) with the data network interactive user plane data; through the AMF NG interface 11 (hereinafter referred to as the N11) with the control plane signaling connection establishment SMF; SMF can be through NG interface 7 (hereinafter referred to as the N7) with the control plane signaling connection establishment PCF. It should be stated, Figure 2 is only a part of the exemplary frame patterning, in addition to the Figure 2 shown in a part of the functional unit outside, the network framework may also include other functional unit or functional entity, such as the: core network apparatus can also include unified data management function (unified data management, UDM) and other functional unit, the embodiment of the invention is not limited to this. When chart 1 shown for communication network 4 G network, the terminal apparatus can be with reference to Figure 2 a of a terminal in a relative description, not repeat them here; access network device can be a base station (nodeB, NB), evolution base station (evolution nodeB, eNB), TRP, TP, AP or a certain other access unit; the core network apparatus can include: mobile management entity (mobility management entity, MME), policy and charging rules function (policy and charging rules function, PCRF) such management equipment, and service gateway (serving gateway, SGW), packet data network gateway (packet data network gateway, PGW), the local gateway (local gateway, LGW) and other gateway device. For example: in Figure 2 shown in section b of the of the 4 G in the network, the terminal apparatus can be through Uu interface with the establishment of the air interface connected eNB, eNB through S1 - C interface with the control plane signaling connection establishment of the MME, eNB through S1 - U interface with the SGW the establishment of user plane data connection, through the SGW S11 with the establishment of a control surface of the MME signaling connection, through the SGW S5/S8 interface with the PGW the establishment of user plane data connection, with the data network between the PGW through SGi interface connection. It should be stated, Figure 2 of part b is only illustrative frame patterning, in addition to the diagram 2 of part b shown in addition to the functional unit, the network framework may also include other functional unit or functional entity, the embodiment of the invention is not limited to this. When chart 1 shown communication network multimedia broadcast with the Multicast (multimedia broadcast and multicast service, MBMS) network or the evolution of the multimedia broadcast Multicast network when (evolved MBMS, eMBMS), terminal apparatus can be with reference to Figure 1 of a terminal in the description related to the understanding, access network equipment can reference view 2 a or fig. 2 b for the access network equipment in the description related to understanding, not repeat them here. The core network apparatus can include: mobile management entity MME or multi-cell/Multicast coordination entity (Multi - cell/multicast Coordination Entity, MCE) such management equipment, and MBMS GW, such as PGW/UPF gateway device. In the MBMS/eMBMS network structure, by the MBMS gateway (MBMS Gateway, MBMS GW) and broadcast Multicast service center (broadcast multicast service center, BM - SC) responsible for the provision and management MBMS service. BM - SC can be according to the current operational characteristics and the number of users to choose different gateway, thereby establishing the corresponding bearing type, such as through the PGW establish unicast bearing, or through a MBMS GW MBMS bearer. MBMS gateway is responsible for the MBMS service data control and transmission, and at the same time the function of the user plane. Wherein MBMS GW in the user plane mainly through SGi - mb interface receiving MBMS service data packet, through the M1 interface to IP Multicast manner to the RAN equipment transmitting MBMS service data packet, the control plane is mainly responsible for the MBMS GW in the BM - SC and between the MME session control signaling transmission. For example: Figure 2 of part c for the embodiment of the invention provides a multimedia broadcast Multicast network architecture schematic view, in Figure 2 of part c as shown in the network, the terminal apparatus can be through Uu interface and access network device to establish the port connection, access network equipment through the M2 interface with the radio resource configuration and management of the signaling connection set up to control the surface of the MCE, MCE and access network device could be the same entity or two independent entity, the MCE M3 interface with the control plane signaling connection establishment of a MME, access network equipment through the M1 interface with the MBMS GW the establishment of user plane data connection, SGmb interface is a BM - SC and between the MBMS GW for transmitting signaling the control surface of the interface, the interface of the SGi - mb BM - SC and between the MBMS GW for transmitting data to the user plane interface. It should be stated, Figure 2 of part c is only illustrative frame patterning, in addition to the diagram 2 of part c shown in addition to the functional unit, the network framework may also include other functional unit or functional entity, the embodiment of the invention is not limited to this. Should be understood, the application in the name of the interface between the network elements is only exemplary, the interface between the network elements can also be other names, the name of the application to the interface . This application technical scheme of the embodiment can be applied to various communication system, for example: a global system for mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), long-term evolution (long term evolution, LTE) system, LTE FDD (frequency division duplex, FDD) system, LTE TDD (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), the global Internet microwave access (worldwide interoperability for microwave access, WiMAX) communication system, the future 5th on behalf of the (5 th Generation, 5 G) system or the new wireless (new radio, NR) access system and so on. The present invention provides transmission of the Multicast service method, can be applied to the management device, the gateway device, access network device, a terminal device, the management device, the gateway device, access network equipment and terminal apparatus includes a hardware layer, running on the hardware layer of the operating system layer, and running on the operating system layer on the application layer. The hardware layer comprises a central processor (central processing unit, CPU), memory management unit (memory management unit, MMU) and memory (also referred to as main memory) and other hardware. The operating system can be any one or more through the process (Process) realizing service processing computer operation system, for example, Linux operating system, Unix operating system, the operating system Android, iOS operating system or operating system such as windows. The application layer includes a browser, address book, word processing software, such as the instant communication software application. In addition, the application of each of the aspect or feature can realize a method, device or using standard programming and/or engineering technical products. In the present application the term "product" can be covered from any computer-readable device, carrier or medium access of the computer program. For example, the computer-readable medium can include, but are not limited to: magnetic storage device (for example, hard disk, floppy disk or tape and the like), optical disk (for example, compressing tray (compact disc, CD), Figure (digital versatile disc, DVD) and the like), smart card and flash memory device (for example, erasable programmable read-only memory (erasable programmable read - only memory, EPROM), card, stick or key driver and so on). In addition, described herein are representative of the various storage medium can be used for storing the information of the one or more equipment and/or other machine-readable medium. The term "machine readable medium" may include but not limited to, can be stored, comprising and/or bearing instructions and/or data for various media. The lower part of the data packet to the Multicast service in the mobile network from the gateway device to the terminal device of the transmission mode is described. In a mobile network, the gateway device (for example UPF, packet data gateway (PDN gateway, PGW), service gateway (serving gateway, SGW), the local gateway (local gateway, LGW), multimedia broadcast/Multicast service gateway (multimedia broadcast and multicast service gateway, MBMS GW) and the like) of the downlink data packet received after the Multicast service, transmitted to the RAN, then the RAN device to the terminal device. In the prior art, Multicast service data packet gateway device with a Multicast between RAN equipment sending, in RAN equipment and between the terminal equipment to the single cell broadcast or multi-cell collaboration broadcast sending. In an embodiment of the invention, made more flexible and changeable Multicast service data packet transmission mode, includes: a unicast mode in the mobile network sending Multicast service data packet; and/or, to combined mode in the mobile network sending Multicast service data packet, the gateway device with the RAN equipment uses Multicast manner between the transmitting Multicast service data packet, RAN equipment and between the terminal equipment using unicast or Multicast sending Multicast service data packet. To the lower an embodiment of the invention, Multicast service data packet in a mobile network may transmit mode is described. 1st for sending mode, the gateway device with the terminal device between the unicast transmission. In this way, the gateway device for the received from a 1st Multicast service data packet, in accordance with request 1st Multicast service the needs of a number of terminal devices copy the 1st Multicast service data packet, then through the RAN device sends a request to each of the Multicast service 1st terminal equipment. Note is required, the application embodiment, gateway device with the RAN equipment using unicast manner between the transmission, namely italy to gateway device and terminal device between the unicast transmission. The illustrative, as shown in Figure 3, Figure 3 is based on the application of a multicasting service data packet in the transmission mode in the mobile network. STB1, STB2 and STB3 IPTV live program request is 1 (i.e. 1st Multicast service) of the three terminal device - television set-top box, wherein the STB1 connected to the CPE1, STB2 connected to the CPE2, STB3 is connected to the CPE3. CPE1, CPE2 and CPE3 is three independent user resident equipment, respectively through the RAN equipment access to mobile network. Therefore, for STB1 and CPE1 purposes, STB1 to 2nd terminal equipment, CPE1 is 1st terminal equipment; for STB2 and CPE2 purposes, STB2 for 2nd terminal equipment, CPE2 as 1st terminal equipment; for the STB3 and CPE3 purposes, STB3 is 2nd terminal equipment, CPE3 is 1st terminal equipment. The gateway device with the CPE1, CPE2 and CPE3 respectively between the establishment of three logical transmission channel, used for transmitting Multicast service data packet, the logical transmission channel, can be for example the evolution packet system bearing (EPS bearer) or protocol data unit (protocol data unit, PDU) session (session), if Multicast service data packet through the PDU session transmission, Multicast service packet to the gateway device mapping to on the QoS flow sent to the RAN equipment. When the gateway equipment receives the 1st Multicast service of the data packet, the data packet needs to copy the three, respectively through the CPE 1, CPE2, CPE3 of PDU session in the EPS bearer or QoS flow sent to the RAN equipment, RAN equipment receives three 1st Multicast service data packet are respectively mapped to three user resident devices each air interface bearing (radio bearer, RB) transmits an CPE1, CPE2 and CPE3, CPE1, CPE2 and CPE3 received 1st Multicast service data packet are sent to STB1, STB2 and STB3. 2nd for sending mode, gateway device and access network device between the Multicast transmission, access network equipment with the terminal equipment is adopted between the unicast transmission. For this transmission mode, if a RAN equipment service a plurality of terminal equipment request 1st Multicast service, gateway device receives the 1st of the Multicast service data packet, is only required to the RAN device sending a 1st Multicast service data packet, then the RAN equipment in accordance with its service cell in the 1st Multicast service request of the terminal device after the copy number, sending a request to each of the 1st Multicast service of the terminal device. When the gateway device to the multicasting of the 1st to the access network device to send the data packet when the Multicast service, can adopt the following two different implementation options: Option one, gateway device and access network device is established between the Multicast transmission channel, a Multicast transmission channel corresponding to one of the Multicast service. An embodiment of the invention, the Multicast transmission channel for the logical channel. For example 5 G in the network architecture, the gateway device is UPF, in UPF and RAN Multicast transmission tunnel set up between the devices (for example Multicast N3 tunnel, namely N3 interface in the user plane of the GTP tunnel (GPRS tunnel protocol user plane tunnel, GTP - U tunnel), each Multicast transmission tunnel corresponds to a Multicast service; also such as 4 G in the network architecture, the gateway device to the PGW/SGW/LGW, in the gateway device and RAN Multicast transmission tunnel set up between the devices (for example Multicast S1 tunnel, namely S1 interface of GTP - U tunnel), each Multicast transmission tunnel corresponds to a Multicast service; re-such as, in the MBMS network architecture, the gateway device for MBMS GW, gateway device and RAN Multicast transmission tunnel set up between the devices (for example Multicast M1 tunnel, namely M1 interface of GTP - U tunnel), each Multicast M1 tunnel corresponds to a Multicast service. For the option one, exemplary, as shown in Figure 4, Figure 4 is based on the application of a multicasting service data packet in the transmission mode in the mobile network. STB 1 and STB2 IPTV live program request is 1 (1st Multicast service) of the two television set-top box, STB3 IPTV live program request is 2 (2nd Multicast service) of the television set-top box, wherein the STB1 connected to the CPE1, STB2 connected to the CPE2, STB3 is connected to the CPE3. CPE1, CPE2 and CPE3 is three independent user resident equipment, respectively through the RAN equipment access to mobile network. Therefore, for STB1 and CPE1 purposes, STB1 to 2nd terminal equipment, CPE1 is 1st terminal equipment; for STB2 and CPE2 purposes, STB2 for 2nd terminal equipment, CPE2 as 1st terminal equipment; for the STB3 and CPE3 purposes, STB3 is 2nd terminal equipment, CPE3 is 1st terminal equipment. The gateway device with the RAN equipment has been established between the corresponding to the 1st and 2nd Multicast service of the Multicast service two Multicast logical transmission channel, the multicasting logic the transmission path can be N3/S1/M1 interface user plane transmission tunnel, such as the 1st Multicast service corresponding to the Multicast N3 tunnel 1, 2nd Multicast service corresponding to the Multicast N3 tunnel 2. When the gateway equipment receives the 1st Multicast service of the data packet, the data packet will be required through the Multicast N3 tunnel 1 is sent to the RAN equipment, by the 1st RAN equipment will be Multicast service data packet after the copy is two, are mapped to the RAN equipment with various user resident equipment between the bearing on the air interface to send to the CPE1 and CPE2, CPE1 and CPE2 then 1st Multicast service received data packet are sent to STB1 and STB2. Similar, when the gateway equipment receives the 2nd Multicast service of the data packet, the data packet will be required through the Multicast N3 tunnel 2 is sent to the RAN equipment, and then the 2nd RAN equipment of the Multicast service data packet is mapped to the RAN equipment and CPE3 between CPE3 transmits an RB. Option two, gateway device and access network device is established between the Multicast transmission channel, a Multicast transmission channel can be used for transmitting a plurality of Multicast service. For example 5 G in the network architecture, the gateway device is UPF, in UPF and RAN Multicast transmission tunnel set up between the devices (for example Multicast N3 tunnel, namely N3 interface of GTP - U tunnel), a Multicast transmission tunnel corresponds to a plurality of Multicast service; also such as 4 G in the network architecture, the gateway device to the PGW, in the PGW and RAN Multicast transmission tunnel set up between the devices (for example Multicast S1 tunnel, namely S1 interface of GTP - U tunnel), a Multicast transmission tunnel corresponds to a plurality of Multicast service; re-such as, in the MBMS network architecture, the gateway device for MBMS GW, MBMS GW and RAN Multicast transmission tunnel set up between the devices (for example Multicast M1 tunnel, namely S1 interface of GTP - U tunnel), a Multicast transmission tunnel corresponds to a plurality of Multicast service. For the option two, the gateway device to send to the RAN equipment in the data packet, the Multicast service need to carry with the corresponding identification, RAN apparatus can be according to the Multicast service with the corresponding identification, to distinguish between the different Multicast service data packet, then RAN equipment to each Multicast service request of the terminal device are respectively send the corresponding Multicast service data packet. For the option two, exemplary, as shown in Figure 5, Figure 5 is based on the application of a multicasting service data packet in the transmission mode in the mobile network. STB 1 and STB2 IPTV live program request is 1 (1st Multicast service) of the two television set-top box, STB3 IPTV live program request is 2 (2nd Multicast service) of the television set-top box, wherein the STB1 connected to the CPE1, STB2 connected to the CPE2, STB3 is connected to the CPE3. CPE1, CPE2 and CPE3 is three independent user resident equipment, respectively through the RAN equipment access to mobile network. Therefore, for STB1 and CPE1 purposes, STB1 to 2nd terminal equipment, CPE1 is 1st terminal equipment; for STB2 and CPE2 purposes, STB2 for 2nd terminal equipment, CPE2 as 1st terminal equipment; for the STB3 and CPE3 purposes, STB3 is 2nd terminal equipment, CPE3 is 1st terminal equipment. The gateway device with the RAN equipment for transmission has been established between the 1st and 2nd Multicast service of the Multicast service is a Multicast logical transmission channel, the multicasting logic the transmission path can be N3/S1/M1 interface user plane transmission tunnel, for example in the Figure Multicast N3 tunnel 1. When the gateway equipment receives the 1st Multicast service of the data packet, the data packet will be required through the Multicast N3 tunnel 1 is sent to the RAN equipment, RAN equipment carried in the data packet with the 1st Multicast service the corresponding identification, identification data packet is the 1st Multicast service data packet, then the 1st RAN equipment of the Multicast service data packet is mapped to the RAN equipment and CPE1 of RB, and RAN equipment with CPE2 of RB, are sent to CPE1 and CPE2, CPE1 and CPE2 then 1st Multicast service received data packet are sent to STB1 and STB2. Similar, when the gateway equipment receives the 2nd Multicast service of the data packet, the data packet will be required through the Multicast N3 tunnel 1 is sent to the RAN equipment, and then the 2nd RAN equipment of the Multicast service data packet is mapped to the RAN equipment and CPE3 between CPE3 transmits an RB. 3rd for sending mode, gateway device and access network device between the Multicast transmission, between the access device with the terminal apparatus uses Multicast transmission. Wherein the gateway device and access network device between the Multicast transmission of the corresponding description, reference can be made to 2nd for sending mode of understanding the content. 3rd for transmitting manner relative to the 2nd for sending mode, can further save the transmission resource. By adopting the transmission mode, if a RAN equipment service a plurality of terminal equipment request 1st Multicast service, gateway device receives the 1st of the Multicast service data packet, is only required to the RAN device sending a 1st Multicast service data packet, but the device will be RAN 1st Multicast service request of the terminal equipment configuration unified interface scheduling identification, said uniform air interface the scheduling identification corresponding to the 1st Multicast service, 1st RAN equipment of the Multicast service data packet for unifying the air interface a dispatch identifier sent to 1st of the Multicast service request of the terminal device. For the transmit mode for the 3rd, illustrative, as shown in Figure 6, Figure 6 is according to the application of a multicasting service data packet in the transmission mode in the mobile network. STB 1 and STB2 IPTV live program request is 1 (1st Multicast service) of the two television set-top box, STB3 IPTV live program request is 2 (2nd Multicast service) of the television set-top box, wherein the STB1 connected to the CPE1, STB2 connected to the CPE2, STB3 is connected to the CPE3. CPE1, CPE2 and CPE3 is three independent user resident equipment, respectively through the RAN equipment access to mobile network. Therefore, for STB1 and CPE1 purposes, STB1 to 2nd terminal equipment, CPE1 is 1st terminal equipment; for STB2 and CPE2 purposes, STB2 for 2nd terminal equipment, CPE2 as 1st terminal equipment; for the STB3 and CPE3 purposes, STB3 is 2nd terminal equipment, CPE3 is 1st terminal equipment. In this example, gateway device and RAN adopted between the devices similar to Figure 5 in the Multicast transmission mode, namely the 2nd for sending in the mode select b, RAN device receives the 1st Multicast service of the data packet, the Multicast manner through the air interface, the 1st Multicast service data packet sent to the CPE1 and CPE2, CPE1 and CPE2 then 1st Multicast service received data packet are sent to STB1 and STB2. 2nd RAN device receives the data packet of the Multicast service, due to the only one CPE request 2nd Multicast service, so that the 2nd RAN equipment Multicast service data packet is mapped to the RAN equipment and CPE3 between single CPE3 RB on the broadcast sent to, or, RAN equipment can also be Multicast manner through the air interface will be 2nd Multicast service data packet to send to the CPE3. RAN equipment Multicast manner through the air interface to the terminal device sending the data packet, including for example, RAN equipment for 1st Multicast service request of the terminal equipment (CPE1 and CPE2) allocating a 1st Multicast service corresponding to the air interface of a dispatch identifier 1, 2nd Multicast service request of the terminal equipment (CPE3) allocating a 2nd Multicast service corresponding to the scheduling of the label 2, then use the interface scheduling identification 1 1st Multicast service data packet will be sent to the request of the Multicast service 1st terminal equipment, the use of the air interface a dispatch identifier 2 2nd Multicast service data packet will be sent to the request of the Multicast service 2nd terminal equipment. Optionally, Multicast service management function management device (for example SMF/UPF/PGW/LGW/MBMS GW), can be according to the network-level Multicast member table, determining 1st Multicast service data packet in the gateway device and the transmitting mode of the apparatus between the RAN, optionally, can also confirm the 1st Multicast service data packet in the RAN equipment and between the terminal equipment transmitting mode; 1st the management apparatus sends the configuration information to the gateway device, the configuration information in the 1st, comprising 1st Multicast service for indicating the packet data at the gateway device and RAN equipment sending mode indication information between the; the management apparatus sends the configuration information to the 2nd RAN equipment, the 2nd configuration information, comprising 1st Multicast service for indicating the packet data at the gateway device and RAN equipment between the 1st indication information sending mode, an optional, the 2nd configuration information also includes for indicating Multicast service data packet in the 1st RAN equipment with the terminal apparatus sending mode between the 2nd indication information. In an optional mode, the means for indicating 1st Multicast service data packet gateway device and between the RAN equipment transmit mode of the indication information can be through the implicit mode comprising the management device to the gateway device and/or RAN device to send the information in, for example, if the management device to the gateway device and/or the RAN device to send the information (for example 1st configuration information or 2nd configuration information) including the terminal equipment in the particular transmission channel information, implies that the gateway apparatus will be unicast to the RAN device sends a 1st Multicast service data packet, or if states management device to the gateway device and/or the RAN device to send the information comprises a Multicast transmission channel information, implies that the gateway apparatus will be transmitted to a Multicast mode RAN 1st Multicast service data packet. For example, for the 5 G network architecture, if SMF for Multicast service management function management device, SMF maintenance network-level Multicast member table includes the 1st 1st Multicast service corresponding to the Multicast service, SMF determining the gateway device to the 1st UPF RAN apparatus sends the Multicast service data packet for Multicast or unicast manner (for example, SMF maintenance network-level Multicast member table, request 1st Multicast service of the terminal apparatus is N a, for this N terminal equipment service access network device has M a, M<N, the SMF determining UPF to Multicast mode to the RAN device sends a 1st Multicast service data packet), then SMF UPF 1st to send configuration information, which includes the instructions to UPF RAN equipment for sending 1st Multicast service data packet mode indicating information; an optional, SMF also determines RAN equipment to the terminal device sends the 1st Multicast service data packet is unicast or Multicast mode, then SMF to 2nd RAN equipment sending configuration information, which includes the instructions to UPF RAN equipment for transmitting Multicast service data packet mode 1st 1st indication information, available, also includes RAN equipment for indicating to the terminal device sends the Multicast service data packet mode 1st 2nd indication information. The SMF to 2nd RAN equipment sending configuration information, can be made by the AMF to SMF RAN equipment sending, or by UPF to SMF RAN equipment by sending. Optionally, the means for indicating to the UPF RAN device sends a 1st Multicast service data packet mode indicating that the information can be contained in the SMF implicit manner to the UPF and/or RAN device to send the information in, for example, sent to the SMF UPF 1st configuration information, and/or SMF to 2nd RAN equipment sends configuration information, comprising 1st terminal device-specific transmission channel information (unicast tunnel label), means that the UPF to unicast manner to the RAN device sends the data packet of the 1st Multicast service; or, to 1st UPF SMF transmitted configuration information, and/or SMF to 2nd RAN equipment sends configuration information, including the Multicast transmission channel information (Multicast tunnel label), means that the UPF Multicast manner to the RAN device sends a 1st Multicast service data packet. As another example, for the 5 G network architecture, if UPF for Multicast service management function management device, UPF maintenance network-level Multicast member list comprises an 1st 1st Multicast service corresponding to the Multicast service, because the UPF is also a gateway device, is determined UPF RAN device sends its to 1st Multicast service data packet for Multicast or unicast mode (for example, UPF maintenance network-level Multicast member table, request 1st Multicast service of the terminal apparatus is N a, for this N terminal equipment service access network device has M a, M<N, is UPF to determine the Multicast mode to the RAN device sends a 1st Multicast service data packet), 2nd UPF RAN equipment to send configuration information, which includes the instructions to UPF RAN equipment for transmitting Multicast service data packet mode 1st 1st indication information. An optional, UPF also determines RAN equipment to the terminal device sends the 1st Multicast service data packet is unicast or Multicast mode, and the transmission to 2nd RAN equipment configuration information contained in the RAN equipment for indicating to the terminal device sends the Multicast service data packet mode 1st 2nd indication information. The 2nd configuration information, is sent directly to the UPF RAN equipment, or, by the UPF SMF after transmission to, and then by the SMF RAN device sends to the AMF. Optionally, the means for indicating to the UPF RAN device sends a 1st Multicast service data packet mode indicating that the information can be contained in the SMF implicit manner to the information sent in the RAN equipment, for example, to SMF RAN equipment sends the configuration information in the 2nd, comprising 1st terminal device-specific transmission channel information (unicast tunnel label), means that the UPF to unicast manner to the RAN device sends the data packet of the 1st Multicast service; or, to SMF RAN equipment sends the configuration information in the 2nd, includes the Multicast transmission channel information (Multicast tunnel label), means that the UPF Multicast manner to the RAN device sends a 1st Multicast service data packet. In this example, not only is the UPF Multicast service management function management device, is RAN equipment transmitting the packet to the gateway device, so not need to management device to the gateway device used for sending instructions to the UPF RAN equipment sending 1st Multicast service data packet mode the configuration information of the 1st step. As another example, for 4 G network architecture, if the PGW is Multicast service management function management device, the maintenance of the PGW network level Multicast member list comprises an 1st 1st Multicast service corresponding to the Multicast service, the PGW is also a gateway device, the PGW determining its to 1st RAN apparatus sends the Multicast service data packet for Multicast or unicast manner (for example, PGW maintenance network-level Multicast member table, request 1st Multicast service of the terminal apparatus is N a, for this N terminal equipment service access network device has M a, M<N, the PGW to determine the Multicast mode to the RAN device sends a 1st Multicast service data packet), PGW to 2nd RAN equipment sending configuration information, which includes the instructions to the PGW RAN equipment for sending 1st 1st Multicast service data packet mode indication information. An optional, also determines the PGW RAN equipment to the terminal device sends the 1st Multicast service data packet is unicast or Multicast mode, and the transmission to 2nd RAN equipment configuration information contained in the RAN equipment for indicating to the terminal device sends the Multicast service data packet mode 1st 2nd indication information. The 2nd configuration information, by the PGW directly or by sending to the SGW RAN equipment, or, by the PGW to the MME after sending, by the MME RAN equipment to send. Optionally, the means for indicating to the PGW 1st RAN equipment sends the Multicast service data packet mode indicating that the information can be included in the implicit mode to the PGW RAN device to send the information in, for example, to the PGW RAN equipment sends the configuration information in the 2nd, comprising 1st terminal device-specific transmission channel information (unicast tunnel label), means that the PGW to unicast manner to the RAN device sends the data packet of the 1st Multicast service; or, to the PGW RAN equipment sends the configuration information in the 2nd, includes the Multicast transmission channel information (Multicast tunnel label), means that the PGW Multicast manner to the RAN device sends a 1st Multicast service data packet. In this example, not only is the PGW Multicast service management function management device, is RAN equipment transmitting the packet to the gateway device, so not need to management device to the gateway device includes sending a for indicating to the PGW 1st RAN equipment sends the Multicast service data packet mode the configuration information of the 1st step. As another example, for MBMS network architecture, if the MBMS GW for the Multicast service management function management device, MBMS GW and the maintenance of the network-level Multicast member list comprises an 1st 1st Multicast service corresponding to the Multicast service, because the MBMS GW is also a gateway device, is determined MBMS GW and 1st RAN device sends to the Multicast service data packet for Multicast or unicast manner (for example, MBMS GW and the maintenance of the network-level Multicast member table, request 1st Multicast service of the terminal apparatus is N a, for this N terminal equipment service access network device has M a, M<N, the MBMS GW determined to Multicast mode to the RAN device sends a 1st Multicast service data packet), MBMS GW to 2nd RAN equipment sending configuration information, which includes the instructions to the RAN equipment for MBMS GW sends the Multicast service data packet mode 1st 1st indication information. An optional, MBMS GW also determines RAN equipment to the terminal device sends the 1st Multicast service data packet is unicast or Multicast mode, and the transmission to 2nd RAN equipment configuration information contained in the RAN equipment for indicating to the terminal device sends the Multicast service data packet mode 1st 2nd indication information. The 2nd configuration information, is sent directly to the MBMS GW RAN equipment, or, by the MBMS GW to the MME after sending, by the MME sends to the RAN equipment, or by the MME by the RAN device sends to the MCE. Optionally, the means for indicating MBMS GW to the RAN device sends a 1st Multicast service data packet mode indicating that the information can be included in the MBMS GW implicit manner to the RAN device to send the information in, for example, MBMS GW to 2nd RAN equipment sends configuration information, comprising 1st terminal device-specific transmission channel information (unicast tunnel label), means that the MBMS GW in a unicast manner to the RAN device sends the data packet of the 1st Multicast service; or, MBMS GW to 2nd RAN equipment sends configuration information, includes the Multicast transmission channel information (Multicast tunnel label), means that the Multicast mode MBMS GW to the RAN device sends a 1st Multicast service data packet. It should also be understood, in addition to the described above by the Multicast service management function of the management device determines 1st RAN apparatus to the terminal apparatus to send the data packet of the 1st Multicast service, RAN equipment itself can also determining the terminal device sends the 1st 1st of the Multicast service data packet. The apparatus according to the RAN 1st Multicast service at the request of a number of terminal devices, and/or request 1st Multicast service between the terminal equipment and the RAN link state, determining RAN apparatus to the terminal apparatus to send the data packet of the 1st Multicast service. It should also be understood, for convenient expression, an embodiment of the invention, the Multicast service data packet said 1st 1st Multicast service data packet. In order to better understand the invention, the following will combine the Figure 7 - Figure 20, with the Figure 1 of the system shown in the same or similar system as an example for the description of the application. Figure 7 is the illustrative flow chart of 5 G network configuration, according to the application of a transmission of the Multicast service method 200. In the method 200 in, Multicast service management function management device for session management function module (session management function, SMF), the gateway device for the user plane function module (user plane function, UPF). As shown in Figure 7, the method 200 comprises the following content. Step 201, 1st terminal device through the access device to the access management function module (access and management function, AMF) sends a session establishment/modification request message, used to trigger the establishment or modification of the process PDUsession. Alternatively, the session establishment/modification request message, including the indication information, the indication information for indicating of the 1st terminal equipment request PDU session to support Multicast service, the 1st terminal equipment can for example customer premises equipment CPE, home gateway, such as a mobile phone device. Optionally, the indicating information is display indication. For example, in the session establishment/modification request message, setting an indicator bit, the indication bit is 1 when, indicating a request contained in the PDU session establishment of the Multicast service, when the indication bit is 0 when, indicating a request PDU session established not included in the Multicast service. Optionally, the indication information can also be implicit instructions. For example, according to the prior agreement, for a specific access point name (access point name, APN) or data network name (data network name, DNN) or network slice identification (slice ID) or slice type of indication that report PDU session established in supporting the Multicast service is required, for example for the agreed APN/DNN IPTV, or Slice ID that is a wireless broadband (wireless broadband, WBB)/(wireless to the x, WTTx) the corresponding network during the slicing, that the requesting the establishment in the PDU session/modified to support the Multicast service. In the establishment of the Multicast service in the PDU session process, according to the AMF need 1st of the terminal device in the session establishment/modification request of the Multicast service indication information, selection of the Multicast service SMF, for example Multicast SMF (multicast SMF, m - SMF); the corresponding, according to the AMF SMF also need to be sent by the terminal equipment comprising 1st session establishment/modification request message (such as the SM request) display or implicit included in the indication information, selection of the Multicast service policy control function module (policy contorl function, PCF) PDU - CAN session establishment; if the configuration dynamic policy and charging control (policy and charging control, PCC), obtained from the SMF PCF PCC rules, or SMF static PCC PCC rules according to the rules obtained; SMF selected UPF supporting the Multicast service, such as the Multicast UPF (multicast UPF, m - UPF) establish N4session, available, and can also be selected SMF UPF reference access point name APN/DNN, information such as the UE position. In the establishment of the Multicast service in the PDU session process, according to the obtained SMF can be of the content contained in the PCC rules, providing the Multicast service service quality (quality of service, QoS) management and configuration function, comprising: obtaining Multicast service related to the QoS parameter of the QoS flows corresponding, for the Multicast service quality of service (QoS flow) flow distribution service quality flow identification (QoS flow identity, QFI); for the gateway equipment (for example UPF) provide QoS phase off configuration, wherein SDF template comprising a Multicast service (such as multicast SDF template), the SDF template comprises at least a set of Multicast service data packet of the packet-filtering rules (packet filter), can guide the UPF the Multicast service data packet is mapped to the appropriate QoS flow transmitting, wherein SMF to QoS related configuration of the UPF, through N4 interface/response/request transmission message carrying; SMF RAN equipment to provide QoS for the configuration description (QoS profile) information, comprising RAN equipment required and Multicast service related QoS parameter configuration, such as the Multicast service related QFI and corresponding QoS parameter, wherein SMF can apply to the AMF RAN equipment (through the N11 interface and N2 interface) sending said QoS configuration describing information. The 1st terminal device through the access device to the AMF sends a session establishment request message/modification, can be by the Multicast service session connection indication triggering, specifically includes the following ways: 2nd terminal equipment to 1st 1st terminal apparatus to send the report message, the terminal installation of the 1st 1st report message as a Multicast service session connection indication, the 1st report message can be 2nd terminal device receiving a request for the Multicast message service or access request message such as, for example 2nd terminal device is a STB, 1st terminal device is a CPE, STB 1st to the CPE of the report message sent the access request or address allocation request (such as DHCP discover) or Multicast service request (such as IGMP report message), the CPE after 1st report message received, be regarded as Multicast service session connection indication, through RAN equipment to the AMF sends a session establishment message for triggering/modification request PDU session establishment or modification of the process; or 1st terminal device according to the application layer service request obtaining Multicast service session connection indication, such as the 1st terminal equipment supporting the Multicast service, if the 1st terminal device application layer services request corresponds to the Multicast service, the terminal devices of the 1st application service request as a Multicast service session connection indication, through RAN equipment to the AMF sends a session establishment message for triggering/modification request PDU session establishment or modification of the process; or 1st terminal equipment according to the pre-information in the service-related information obtaining Multicast service session connection indicating, for example, 1st terminal device is a CPE, CPE can be statically configured in the business-related information, or, from the CPE TR - 069 server obtains the management/operation configuration information, which includes the business-related information, or obtained from the CPE PCF UE policy comprises a service related information in the, and if the service related information that is included in the business CPE support Multicast service (such as the CPE of the configuration information, with the IPTV related DNN/APN), the CPE can be said service-related information as a Multicast service session connection indication, through RAN equipment to the AMF sends a session establishment message for triggering/modification request PDU session establishment or modification of the process. Optionally, 2nd terminal apparatus can include a set-top box STB, Internet television, mobile phone and a computer can support Multicast service of the terminal device. The embodiment of the invention, a plurality of different terminal equipment (including 2nd terminal equipment) can be connected to the 1st terminal device, then through the 1st terminal device connected to the mobile network, the plurality of different terminal device and establishing connection between terminal 1st 1st terminal equipment service of a local area network. Step 202, 1st 2nd terminal apparatus to the terminal apparatus to send the report message of the 1st, 2nd 1st report message to the terminal device receiving a request for the 1st Multicast service message, a report message in the 1st 1st Multicast service with the corresponding identification. Optionally, in the present application, the 1st Multicast service with the corresponding identification can be the IP address of the 1st of the Multicast service, or for the 1st Multicast service allocated temporary mobile group identification (temporary mobile group identity, TMGI), can also be agreed in the communication system that the 1st Multicast service indication information, such as "1" indicative of the 1st Multicast service, "2" represents the 2nd Multicast service, should be understood, the application for the 1st Multicast service with the corresponding identification is not necessarily limited, the 1st Multicast service with the corresponding identification can also be other information. In order to 2nd terminal device is a STB, 1st terminal device is a CPE for example, 1st report message can be STB request receiving a report message of the Multicast service, for ease of presentation, the embodiment of the invention in order to IGMP join the report of the equipment request receiving a report message of the Multicast service. Pay attention to, step 202 is an optional step, when the 2nd the terminal apparatus is Multicast service needs, the implementation of the step 202. Optionally, step 202 can also be in step 201 is carried out before, namely 1st 2nd terminal apparatus to the terminal apparatus to send the report message of the 1st, can be 1st terminal device as a Multicast service session connection indication, as step 201 in the terminal device through the 1st RAN equipment to the AMF sends a session establishment request message/modification of the trigger condition. Step 203, 1st terminal device to send the report message of the 2nd RAN equipment, for 1st 2nd report message of the terminal equipment request receiving 1st Multicast service. For example 2nd report message for the Multicast service receiving a request for the CPE of the report of the IGMP Join 1st, 2nd report message or for the forwarding of the CPE STB request receiving 1st IGMP join report of the Multicast service. 2nd report message carried in the 1st Multicast service with the corresponding identification. Optionally, the report message of the 2nd in the 2nd also portable terminal equipment identification, and/or, 1st terminal equipment with the corresponding identification. The 1st 1st terminal device receiving a request for the Multicast service, including, the terminal apparatus is 2nd 1st Multicast service demand, by the 1st terminal equipment to transmit the 1st 2nd terminal device receiving a request for the Multicast service message, or 1st terminal equipment configuration IGMP Proxy capacity, can be on behalf of the request receiving 1st Multicast service; or, 1st terminal device itself has 1st Multicast service demand, request receiving 1st Multicast service. For ease of presentation, an embodiment of the invention, will be mainly to 1st terminal equipment configuration IGMP Proxy capacity, receiving a request for the Multicast service on behalf of the 1st, 2nd and 1st the report message of the terminal equipment carried in the corresponding identification is taken as an example programme presentation. The 1st terminal equipment with the corresponding identification, including but not limited to the following information in at least one of: 1st terminal equipment identification, 1st terminal device sets up a connection session identifier, bearing the 1st of the terminal device, the terminal device with the 1st session or bearing corresponding to the tunnel ID, service 1st terminal equipment RAN equipment identification (for example RAN device IP address, eNB/gNB ID, such as global eNB/gNB ID), service 1st terminal device cell identifier; wherein said 1st terminal equipment identification, can be for example 1st IP address of the terminal device, a medium access control (medium access control, MAC) address, International mobile subscriber identity (international mobile subscriber identity, IMSI), International mobile station equipment identity (international mobile station equipment identity, IMEI), temporary mobile subscriber identity (temporary mobile subscriber identity, TMSI), cell radio network temporary identity (cell radio network temporary identifier, C - RNTI), terminal equipment in the access network and the core network interface (for example NG interface, S1 interface and the like) on the UE identification (such as AMF UE NGAP ID, gNB UE NGAP ID, eNB UE S1AP ID, MME UE S1AP ID) and; the 1st bearing the terminal equipment, can be 1st terminal device the packet system (evolved packet system, EPS) bearing (bearer) identification, and/or 1st terminal equipment air interface bearing (radio bearer, RB) identification. Optionally, in step 203 in, 1st terminal equipment to record the 1st 2nd terminal device receiving a request for the Multicast service information, including for example, 1st terminal equipment maintenance and local area (local) Multicast member table, the local Multicast member table, comprising at least one with a certain Multicast service the corresponding identification, and/or, with the Multicast service information corresponding to the entry, said with said Multicast service information corresponding to the entry in the, includes with the request to receive the Multicast service corresponding to the identification of the 2nd terminal equipment. 1st terminal device reading received the report message of the 1st, informed of the 1st 2nd terminal device receiving a request for the Multicast service, if the 1st terminal equipment to store local Multicast member table, has been and 1st Multicast service corresponding 2nd terminal equipment effective information entries, are not required to update the local Multicast member table, otherwise, 1st terminal device in its maintenance of the local Multicast member table, with the added 2nd 1st Multicast service corresponding to the terminal device the information item, or modify it protects the local Multicast member table, so that the 1st and 2nd corresponding Multicast service of the information item into the terminal equipment, the 1st and 2nd Multicast service corresponding to the terminal device the information item including, 1st Multicast service with the corresponding identification, and/or, with the request to receive Multicast service of the 1st 2nd terminal device corresponding identification. An exemplary, table 1 shows the 1st terminal equipment maintenance in the form of local Multicast member table, with the Multicast service 1st as the corresponding identification, as 2nd 2nd terminal equipment identification, 3rd as each row corresponding to the information item whether effective (this row can be selected). If the report message of the 1st UE indicate terminal device03 Receiving a request for the program 1 address corresponding to the IGMP join report 1st Multicast service, then the 1st terminal equipment in the local Multicast member program in the 1 address corresponding to the information in the entry, adding terminal equipment identification UE03 , And corresponding to the UE03 The information item "effective" is a column in the memory 1 (0 indicates that the line information invalid, 1 representing the line information effectively). In the present application, the multicasting service the corresponding identification, including for example with the Multicast service the corresponding Multicast IP address or a temporary mobile group identifier TMGI or the communication system agreed in the other identification information of the Multicast service. Table 1 1st terminal equipment maintenance in the form of local Multicast member table Table 1 in the example of, the 1st Multicast service with the corresponding identification is 1st Multicast service the corresponding Multicast IP address, for example 224.0.1 . 0. The 2nd terminal equipment with the corresponding identification, including but not limited to the following information in at least one of: 2nd terminal equipment identification, the terminal equipment and the 2nd 1st between the terminal equipment interface/port identification, the terminal equipment and the 2nd 1st between the terminal equipment and the bearing or logical channel identification. The 2nd terminal equipment identification, can be 2nd terminal device of the IP address, MAC address, IMSI, TMSI, such as C - RNTI. In particular, the terminal equipment can 1st through configuration of the IGMP/MLD Proxy (IGMP/MLD agent) function or IGMP/MLD Snooping (IGMP/MLD interception) function, the maintenance of local Multicast member table. In this case, the terminal device receives the 1st 2nd terminal equipment of the IGMP/MLD report message (such as the members of the report - IGMP join report, or leave the report the report - IGMP leave) after, the request to record of the Multicast service can be 2nd terminal equipment identification (for example 2nd terminal device of the IP address or MAC address) or received information such as the port number of the IGMP/MLD message, and/or, 2nd terminal device receiving a request for the Multicast service the corresponding identification (such as the Multicast IP address). For example, when the 1st terminal equipment configuration IGMP/MLD Proxy, 1st terminal equipment can read the terminal apparatus of the information in the IGMP/MLD message, maintenance by a terminal apparatus of the 2nd local Multicast member table, and as the IGMP/MLD client sends the message on behalf of the IGMP/MLD (including active reports and query response); or, 1st terminal equipment configuration has the function of the IGMP/MLD Snooping, then the 1st terminal equipment can intercept the information in the message, the maintenance by a terminal apparatus of the 2nd local Multicast member table, and to the access network device forwarding each received IGMP/MLD message. Optionally, the terminal device according to the received 1st 1st of the report message, to determine whether to send the report message of the 2nd RAN equipment, including for example: 1st terminal device each is received the report message of the 1st, 2nd on to the access network device sends the report message; or, 1st 1st terminal device receives the report message, if the 1st terminal device not within the preset time of the segment for receiving a request transmits the 1st 2nd report message of the Multicast service, then the 1st terminal equipment to the access network device sends the report message of the 2nd; or, 1st terminal device receives the report message after 1st, inspection and maintenance of the local Multicast member table, if not including the 1st 1st of the report message of the Multicast service in the with the corresponding identification, or the local Multicast member table of all valid information in the entry, not terminal equipment and with the 1st the corresponding identification corresponding to the Multicast service, then the 1st terminal equipment to the access network device sends the report message of the 2nd, for receiving a request for the 1st Multicast service, 1st 2nd report message comprises an identification corresponding to the Multicast service. Step 204, RAN equipment to the Multicast service management function management device (for example SMF) sends a request receiving 1st Multicast service message. In an optional way, the concrete process comprises: RAN device receives the 1st 2nd terminal apparatus to send the report message, the gateway apparatus (for example UPF) forwarding the 2nd report message, UPF identification 2nd 1st report message is sent by the terminal device with the Multicast service related message, to the Multicast service management function management device (for example SMF) sends a message, wherein the report message comprising said 2nd. Should be understood, if the RAN equipment through the 2nd SMF UPF to send the report message, is the need to dispose the UPF SMF multicasting business related message detection rules, according to the configuration of the detection rule SMF, on receipt of the report message of the UPF 2nd 1st identifying its is after the terminal equipment and the Multicast service associated with the message (such as IGMP join the report or the IGMP leave report), and forwarded to the SMF 2nd report message, in order to SMF network-level Multicast member management. For example, detection of the rules of the SMF configuration, according to the IGMP report message format and the corresponding field of the filling content determining the received data packet is IGMP report message. Optionally, the UPF identification 2nd report message is sent by the terminal device 1st with the Multicast service associated with the message, including for example: UPF read 2nd report message of the source IP address and the purpose of the IP address, and/or, IGMP message content, the source address of the IP address of the terminal device for the 1st, the purpose of the IP address is the 1st Multicast service address, IGMP type field is displayed as "the report of the members of the" type, IGMP group address word section is 1st Multicast service address, is UPF can judge the 1st 2nd report message is sent by the terminal device for receiving a request for the 1st of the Multicast service report - IGMP join IGMP report message; or, UPF read 2nd report message of the source IP address and the purpose of the IP address, the source address of the IP address of the terminal device for the 1st, the purpose of the IP address is the 1st Multicast service address, then the UPF can judge the 1st 2nd report message is sent by the terminal device for receiving a request for the 1st of the Multicast service report - IGMP join IGMP report message. In an alternative form, the apparatus can be through RAN SMF AMF to sending the 2nd report message. In this way, 1st terminal device through the non-access layer (non access stratum, NAS) message carrying the 2nd report message, RAN equipment received will be the 1st NAS message transmitted to the terminal apparatus corresponding to the AMF, by the AMF stated NAS carried in the message the 2nd report message or the 2nd report of the key information in the message, transmitted to the SMF. Wherein the terminal device through the 1st NAS message carrying the report message of 2nd mode, including for example: the 1st terminal device in its transmission of the message in the NAS, through a message container (message container) carrying said 2nd report message; or, the 1st NAS message sent by the terminal device for specific types (for example with the Multicast service request the relevant type), wherein the comprising said 2nd report information carried in the message, such as the following in any one or any of a number of: 1st terminal equipment with the corresponding identification, 1st Multicast service with the corresponding identification, receiving a request for the 1st Multicast service instructions. Optionally, RAN apparatus has a Multicast service management capabilities, namely RAN apparatus according to the 2nd report message is received, the maintenance of the cell-level Multicast member table (for example RAN equipment configuration IGMP proxy or IGMP snooping function, can read the 1st terminal apparatus to send IGMP join the report or the IGMP leave report, the maintenance of the cell-level Multicast member table). The cell-level Multicast member table, comprising 1st Multicast service identifier, and/or, by the 1st RAN equipment service request of the Multicast service terminal equipment (which includes 1st terminal equipment) corresponding identification, optionally also includes the 2nd terminal equipment identification. An exemplary, table 2 shows a RAN equipment maintenance of the cell-level Multicast member table form, with the Multicast service 1st as the corresponding identification (such as the Multicast IP address), as 2nd 1st terminal equipment identification, as with the 1st 3rd RAN equipment between the terminal equipment used for sending corresponding Multicast service data packet radio bearer identification, 4th column shows whether the line information entries each effective (this row can be selected). If the report message indicates that the 2nd 1st UE for terminal equipment13 Receiving a request for the program 1 address corresponding to the IGMP join report of the Multicast service, RAN in cell-level Multicast member program in the 1 corresponding to the addresses of the terminal equipment identification in the 1st, adding 1st terminal equipment identification UE13 , And/or, for UE13 Distribution used for sending program 1 data packet bearing the RB3 , Corresponding to the UE13 The information item "effective" column is set to the value of 1 (0 indicates that the line information invalid, 1 representing the line information effectively). Table 2 RAN equipment maintenance of the cell-level Multicast member table form Optionally, the cell-level Multicast member table, can also include the link state information. The link state information can be used to RAN device determines 1st 1st terminal apparatus to send the data packet of the Multicast service. Step 205, SMF according to the 2nd report message, it is determined that the terminal device of the 1st 1st Multicast service providing transmission service with the network device whether the UPF established on the 1st Multicast service connection. In particular, the report message of the SMF read in the 2nd 1st Multicast service address, it is determined that the terminal device of the 1st 1st Multicast service providing transmission service with the network device whether the UPF established on the 1st Multicast service connection. For example, SMF can check the network-level Multicast member table, if one includes the at least one with the 1st multicasting business related effective information item, the UPF SMF can judge has been with the network equipment to the establishment of the 1st Multicast service connection, otherwise UPF SMF can judge that have not yet established on the network equipment 1st Multicast service connection. The embodiment of the invention, the network device can be for example, in the IP data network DN support Multicast router or gateway, the Multicast query node, the Multicast service server equipment. The network-level Multicast member table, and wherein the multicasting business related 1st effective information item of content can refer to steps 208 in understanding the description of the. Step 205 is an optional step. Step 206, SMF UPF 1st to send the notification message, the notification message for indicating the 1st UPF with the network equipment to the establishment of the 1st Multicast service connection. Specifically comprises for example, combining step 205, SMF is judged as the 1st 1st terminal equipment of Multicast service providing transmission service with the network device whether the UPF established on the 1st Multicast service connection; if the judging negative, is sent to the SMF UPF 1st notification message, indicating the UPF with the network equipment to the establishment of the 1st Multicast service connection; if it is determined, can not carry out step 206 and step 207. Step 207, UPF to 1st request message sent by the network device, the 1st request message is used for the UPF request with the network equipment to the establishment of the 1st Multicast service connection. For example, such as IGMP/MLD UPF can adopt the Multicast management protocol or protocol independent Multicast (protocol independent multicast, PIM) such as the Multicast routing protocol, to the network device to send the used for adding the 1st Multicast service (for example in the case of the report of the IGMP join) or adding 1st Multicast service corresponding Multicast routing tree (for example UPF sending and joining the Multicast routing tree to the graft request message) of the request message. Step 208, SMF maintaining the network-level Multicast member table. SMF maintenance network-level Multicast member table, including with each of the Multicast service the corresponding identification, corresponding to each of the Multicast service, also includes the required to receive the Multicast service terminal information pertaining to the device entries, the need to receive the Multicast service of the terminal equipment, such as the 1st terminal equipment, regarded as one of the members of the Multicast service. The information in the entry, including as the Multicast service members corresponding to the identification of the terminal device, the marks can be reference step 203 as described in the "with the 1st terminal equipment identification corresponding to" understand the. The SMF maintaining the network-level Multicast member table, can include for example: SMF read in 1st 2nd report message of the Multicast service identifier, and 1st terminal equipment with the corresponding identification, an optional, SMF 2nd report message can also be read in the identification of the 2nd terminal equipment. If SMF maintenance network-level Multicast member table, have terminal equipment and the 1st 1st Multicast service corresponding valid information item, without the need to upgrade the network-level Multicast member table; otherwise, the network-level Multicast members SMF updated, namely SMF in the network-level Multicast member table, the increase in terminal equipment and the 1st 1st Multicast service information corresponding to the entry, or the terminal equipment and the 1st 1st Multicast service information corresponding to the entry effect. The terminal equipment and the 1st 1st Multicast service information corresponding to the entry, including 1st Multicast service with the corresponding identification, and/or, 1st terminal equipment with the corresponding identification, an optional, also includes the identification of the 2nd terminal equipment. Alternatively, if the network-level Multicast members SMF table have been updated, SMF will send the network-level Multicast member notification message to the UPF, UPF know with the 1st Multicast service corresponding to the new members of the 1st in the terminal device, so as to be received UPF 1st Multicast service data packet when the, the data packet to the network-level Multicast member table with the 1st Multicast service identifier corresponding to the 1st Multicast service all requests to the terminal equipment (including 1st terminal equipment) forwarding. The network-level Multicast member notification message, can include the updated network level Multicast member table, or the updated network level Multicast members in a table corresponding to the 1st Multicast service all the effective information item, or for indicating the new terminal equipment and the 1st 1st Multicast service with the information item corresponding to the instruction information. An exemplary, table 3 shows a managed device (such as SMF) maintenance in the form of network level Multicast member table, with the Multicast service 1st as the corresponding identification, the identification of the access network device as 2nd, 3rd as terminal equipment identification. If the 2nd report message to indicate terminal equipment UE22 Receiving a request for the program 1 address corresponding to the Multicast service of the report of the IGMP join, and access network equipment RAN2 For UE22 Service, in table 3 in the network-level Multicast member table, not terminal equipment UE22And program 1 address corresponding to the information item, the SMF in network level Multicast members with the program table 1 address corresponding to the information in the entry, the terminal equipment identification UE22 And/or, for UE22 Service access network equipment identification RAN2 . In the present application, the RAN equipment identification can be for example RAN equipment of the IP address, RAN equipment disposed at the tunnel end point identification (tunnel end identity, TEID), base station identification (eNB/gNB ID), global base station identification (global eNB/gNB ID) and the like. Table 3 management equipment maintenance of a network-level Multicast member table form An exemplary, table 4 shows another kind of network level in the form of Multicast member table, with the Multicast service 1st as the corresponding identification, the identification of the access network device as 2nd, 3rd as terminal equipment identification, each row corresponding to the 4th example is the effectiveness of the information item. If the report message of the 2nd UE terminal device21 Request to program 1 address, and access network RAN2 For UE21 Service, the network-level Multicast members SMF program in the 1 address corresponding to the information in the entry, corresponding to the UE21 The information item "effective" as a column in the memory 1 (0 indicates that the line information invalid, 1 representing the line information effectively). Table 4 management equipment maintenance of a network-level Multicast member table form If the report message of the 2nd UE terminal device22 Request to program 1 address, and access network RAN2 For UE22 Service, the network-level Multicast members SMF program in the 1 address corresponding to the information in the entry, the terminal equipment identification UE22 And its corresponding access network equipment identification RAN2 , And the "effective" in this column is set as the value of 1. Step 205 to step 208 for the 2nd SMF according to the report message, the establishment of a Multicast connection guiding UPF, maintaining the network-level Multicast member table specific to realize the procedure. Optionally, in the SMF 2nd report message received, can first be network-level Multicast member table maintenance. SMF maintaining the network-level Multicast the member list of the process-specific reference step 208. In the SMF maintaining the network-level Multicast members after the list, SMF, according to 2nd report message, it is determined that the terminal device of the 1st 1st Multicast service providing transmission service with the network device whether the UPF established on the 1st Multicast service connection, this process can be reference step 205. If the judge SMF UPF not established with the network equipment on the 1st Multicast service connection, is the SMF UPF 1st to send the notification message, the notification message for indicating the 1st UPF with the network equipment to the establishment of the 1st Multicast service connection, this process can be reference step 206. After 1st UPF received notification message, to 1st request message sent by the network device, the 1st request message is used for the UPF request with the network equipment to the establishment of the 1st Multicast service connection, this process can be reference step 207. Namely, the above-mentioned step 208 can be in the above-mentioned step 205 - 207 carried out prior to, or an alternative in the solution of step 208 in step 206 - step 207 is carried out before. For SMF is first maintaining the network-level Multicast member table is the first terminal apparatus is judged as the 1st 1st Multicast service providing transmission service with the network device whether the UPF established on the 1st Multicast service connection, this application is not limited to this. Step 209, SMF RAN sending a notification message to the device. Optionally, the notification message comprises the cell-level Multicast member notification message, the cell-level Multicast member notice information comprises 1st Multicast service identifier, and/or, with the Multicast service members by 1st in the RAN equipment service all terminal equipment corresponding identification; or, the cell-level Multicast member notification message, including for indicating the Multicast service members 1st 1st is added to the terminal equipment of the indication information, the 1st terminal equipment from the stated RAN equipment service. Optionally, determining SMF 1st Multicast service data packet gateway device with the transmitting mode of the apparatus between the RAN is unicast or Multicast (in this embodiment as being a unicast mode), SMF also to 2nd RAN apparatus sends the configuration information, the configuration information comprises 2nd for indicating to the UPF RAN equipment sending 1st 1st Multicast service data packet mode indication information. In a possible way, to the SMF RAN equipment in the sending of the notification message, including the 2nd configuration information. In a possible way, the 1st indicating information is implicit in the SMF comprising sending in a message to the RAN equipment, for example in the 1st established between the terminal equipment and the network of the Multicast service in the process of PDU session, SMF RAN AMF is sent to the device via the message includes 1st terminal device-specific transmission tunnel ID, this indicates that the device with the UPF RAN sent between the Multicast service data packet of the 1st unicast; or by the AMF SMF RAN equipment in a message is sent to the Multicast transmission tunnel identifier comprising, indicates that the UPF RAN equipment with the 1st Multicast service data packets sent between the way of multicasting. In the example of a possible, through to the AMF SMF RAN equipment can be sending the notification message; or, in the example of another possible, through SMF UPF RAN equipment to send the notification message. Step 209 is an optional step, in some cases the need to implement, for example, when the UPF and RAN equipment between the Multicast mode to send multicasting service data packet, and RAN equipment does not have a step 204 described in the Multicast service management capacity, the need to implement step 209; when the UPF and RAN equipment (or terminal equipment) between the unicast mode to send the Multicast service data packet, or RAN device has a step 204 described in the ability of the Multicast service management, can not carry out step 209. The step 210, the network equipment to send UPF 1st Multicast service data packet. For convenient expression, an embodiment of the invention, the Multicast service data packet that 1st 1st Multicast service data packet. Step 211, UPF receiving network device to send the 1st Multicast service data packet, the 1st Multicast service data packet copy. In an optional mode, the UPF 1st Multicast service data packet copy, including: SMF UPF according to transmitting the network-level Multicast member notification message, informed of the service to the terminal equipment of UPF what is 1st for the Multicast service members, then the data packet in accordance with the Multicast member 1st copy number. An optional, UPF can also be copied in the data packet with the added terminal device corresponding to the identification and/or information related to the QoS guarantee. For example, the maintenance of the SMF network level Multicast member information table 3 shown, 1st Multicast service corresponding to the program 1, its members including UE11 , UE12 , UE21 , In the UPF received program 1 of the data packet, according to the SMF for transmitting the network-level Multicast member notification message, the packet replication 3 parts, the copied data packet will be sent separately to the UE11 , UE12 , UE21 . An optional, UPF can be replicated in the data packet, add the following information in one or more of the: 1st Multicast service data packet is mapped to QoS flow of identification (such as QoS flow identity, QFI), the corresponding 5 G service quality label (5 G QoS identifier, 5 QI), with a terminal equipment of PDU session corresponding to the N3 and the tunnel identifier. Step 212, UPF 1st RAN device sends to the Multicast service data packet. UPF SMF provided according to QoS related configuration (for example Multicast traffic flow template multicast SDF template), the copy of the Multicast service data packet is mapped to the 1st on 1st QoS flow, transmitted to the RAN. The 1st RAN equipment service for the terminal device, the terminal device is 1st 1st Multicast service of one of the members. Step 213, RAN equipment receives the 1st UPF transmission of Multicast service data packet, to the terminal device sends the 1st 1st Multicast service data packet. The RAN equipment receives the 1st UPF transmission of Multicast service data packet, to the terminal device sends the 1st 1st Multicast service data packet, including for example, RAN equipment receives the 1st Multicast service in the data packet, the carrying and the 1st terminal device corresponding identification (for example corresponding to the 1st terminal equipment of PDU session N3 tunnel label), therefore, the 1st RAN apparatus can confirm the Multicast service data packet is to be transmitted to the 1st terminal equipment, optionally, RAN apparatus according to the Multicast service data packet 1st 1st QFI carried in, with the 1st QFI QoS parameters corresponding to the, and/or, the characterization of the 1st QFI 1st QoS flow and air interface radio bearer (RB) corresponding relations between, on the RB mapping to the data packet, is transmitted to the 1st terminal equipment. The QoS flow and the corresponding relation between the RB, can advance by the management device (for example SMF) is allocated to the RAN equipment, or by RB RAN equipment according to the QoS parameter of the QoS flow and of its own accord. Step 214, terminal equipment receives the 1st RAN equipment sends the Multicast service data packet and to 1st 2nd 1st terminal device sends the Multicast service data packet. Should be understood, 1st equipment to 1st 2nd terminal device sends the Multicast service data packet is selective action. If step 202 in the terminal device receives the 1st 2nd terminal device is used for receiving a request for the 1st 1st report message of the Multicast service, in this step, the terminal apparatus also required to 1st 2nd 1st terminal device sends the Multicast service data packet. In an optional manner, 1st terminal equipment receives the 1st in the Multicast service data packet, carrying 1st Multicast service identifier, 1st terminal equipment inquires the maintaining the local Multicast member table, determining 1st 2nd terminal device is the Multicast service members, then 1st terminal equipment to the 1st 2nd terminal device sends the Multicast service data packet. Step 215, 2nd terminal equipment to 3rd 1st terminal apparatus to send the report message, the request of the 1st for the end of the Multicast service. 1st Multicast service for the Multicast service corresponding to 1st, 3rd report message with the 1st Multicast service included in the corresponding identification. For example, 2nd 3rd report message is sent by the terminal 1st Multicast service request from the IGMP leave report, which includes the IP address of the terminal equipment to 2nd, and/or, 1st Multicast service of the IP address. Optionally, 1st terminal device to read or intercept the 3rd report message, informed of the end of the 1st 2nd terminal device requests a Multicast service, the terminal equipment to record the 1st 2nd 1st terminal device requests the end of the Multicast service information. The 1st terminal equipment to record the 1st 2nd terminal device requests the end of the Multicast service information, including for example 1st terminal device in its maintenance of the local Multicast member table, delete and 1st 2nd Multicast service identifier corresponding to the terminal device the information item, or 1st terminal equipment to modify its maintenance of local Multicast member table, so that the 1st and 2nd Multicast service identifier corresponding to the terminal apparatus of the information item failure; the 1st and 2nd Multicast service identifier corresponding to the terminal device the information item content reference can be made to step 202 in the description. Optionally, 1st terminal device sending inquiry information, recognizes the 1st terminal equipment service in the local area network, whether there are other members of the 1st of the Multicast service. The 1st terminal device sending inquiry information, confirm whether there are other members of the 1st Multicast service, including such as IGMP/MLD 1st terminal device sends the query message, for inquiring of the 1st terminal equipment service in the local area network, whether there is still need receiving 1st Multicast service of the terminal apparatus, if the 1st terminal device after sending inquiry information a section of the setting time is not received in a local area network of the inner terminal equipment request receiving 1st the report message of the Multicast service, then the 1st terminal equipment may be considered its services in the local area network, does not have the terminal equipment to the 1st Multicast business needs, can be in the subsequent step to the access network device transmits a request to withdraw from the 1st report message of the Multicast service. Step 215 is the optional step, when the 2nd terminal device supports the leave message sends the IGMP/MLD, 2nd terminal equipment is connected to the 1st terminal equipment, and the need for the end of the implementation of the 1st Multicast service. Step 216, 1st terminal equipment to 4th RAN equipment sends the report message, the report message of the 4th 1st terminal equipment request for withdrawal from the 1st Multicast service. For example 1st terminal device is a CPE, 4th report message to the request sent by the CPE end of the IGMP leave 1st Multicast service report (report of the IGMP leave); or 4th report message is a request issued from the STB 1st Multicast service from the IGMP report, via the CPE to send to the RAN equipment. The 4th report message carried in the 1st Multicast service with the corresponding identification, an optional, the 4th report message also can be carried to the 2nd in the identification of the terminal equipment, and/or, 1st terminal equipment with the corresponding identification. The 2nd terminal equipment identification, the 1st terminal equipment with the corresponding identification, reference can be made to the aforementioned steps described in the. The terminal device requests from the 1st 1st Multicast service, including, 1st 2nd terminal equipment request from the Multicast service, the terminal equipment by the 1st 2nd 1st terminal devices exit the forwarding of the Multicast service request, or 1st terminal equipment configuration IGMP proxy capacity, on behalf of the request from the 1st Multicast service; or, 1st terminal equipment themselves requested to withdraw from the 1st Multicast service. For ease of presentation, an embodiment of the invention, will be mainly to 1st terminal equipment configuration IGMP Proxy capacity, on behalf of the request from the 1st Multicast service for example, programme introduction. Step 217, RAN equipment to the Multicast service management function management device (for example SMF) the end of the request is transmitted to the 1st Multicast service message. In an optional manner, SMF RAN equipment to the end of the request is transmitted to the 1st Multicast service message, including: RAN equipment receives the 4th 1st terminal apparatus to send the report message, the gateway apparatus (for example UPF) forwarding the 4th report message, identifying UPF 1st 4th report message for the terminal equipment and the Multicast service associated with the message (such as IGMP join the report or the IGMP leave report) after, sending a message to the SMF, wherein the report message comprising said 4th. Should be understood, if UPF SMF RAN equipment by sending the report message to the 4th, the UPF SMF need to dispose the Multicast service related message detection rules, according to the configuration of the detection rule SMF, on receipt of the report message of the UPF 4th 1st identifying its is after the terminal equipment and the Multicast service associated with the message, and forwarded to the SMF 4th report message, in order to SMF Multicast member management. For example, detection of the rules of the SMF configuration, according to the IGMP report message format and the corresponding field of the filling content determining the received data packet is IGMP report message. Optionally, the UPF 1st 4th report message for identifying the terminal equipment and the Multicast service associated with the message, including for example: 4th UPF read the report message of the source IP address and the purpose of the IP address, and/or, IGMP message content, the source address of the IP address of the terminal device for the 1st, the purpose of the IP address is 224.0.0 . 2 (special group address, finger segment all of the Multicast router), IGMP type field is displayed as "leaving group message" type, IGMP group address word section is 1st Multicast service address, the 4th UPF can judge the report message of the request from the terminal apparatus for the 1st 1st IGMP report message of the Multicast service report - IGMP leave; or, 4th UPF read the report message of the source IP address and the purpose of the IP address, the source address is the IP address of the terminal device 1st, IP address is the purpose of 224.0.0 . 2, the 4th UPF can judge the report message of the request from the terminal apparatus for the 1st 1st Multicast service of the report of the IGMP report - IGMP leave message. In an alternative form, SMF RAN equipment to the end of the request is transmitted to the 1st Multicast service message, including: through the AMF SMF RAN to sending the 4th report message. In this way, 1st terminal device through the non-access layer (NAS message carrying the report message of the 4th, RAN equipment received will be the 1st NAS message transmitted to the terminal apparatus corresponding to the AMF, by the AMF stated NAS carried in the message the report message or the 4th 4th in the key information of the report message, transmitted to the SMF. Wherein the terminal device through the 1st NAS message carrying the report message of 4th mode, including for example: the 1st terminal device in its transmission of the message in the NAS, through a message container (message container) carrying said 4th report message; or, the 1st NAS message sent by the terminal device for specific types (for example with the Multicast service request the relevant type), which includes the 4th report information carried in the message, such as the following in any one or any of a number of: 1st terminal equipment with the corresponding identification, 1st Multicast service with the corresponding identification, the end of the Multicast service request instructions 1st. An optional, RAN apparatus has a Multicast service management capabilities, namely RAN apparatus according to the 4th report message is received, the maintenance of the cell-level Multicast member table. For example RAN equipment configuration IGMP snooping function, the maintenance of the table 2 is shown in the cell-level Multicast member table, 1st RAN apparatus reads the terminal equipment (UE13 ) 4Th report message is sent by the UE13 Requesting to leave 1st Multicast service (corresponding to the program 1) of the report of the IGMP leave, RAN equipment can be in its maintenance of the cell-level Multicast member table, delete UE13 With the program 1 corresponding to the information item, or the UE13 With the program 1 corresponding to the information item of the "effective" 4th in a column in the memory is 0, to indicate that the row information to be invalid. Step 218, SMF according to the report message of the 4th, maintaining the network-level Multicast member table. SMF maintenance network-level Multicast member table, reference can be made to step 208 in understanding the description of the. According to the report message of the SMF 4th, maintaining the network-level Multicast member table, can include for example: SMF reading 4th 1st contained in the report message of the Multicast service identifier, and 1st terminal equipment with the corresponding identification, an optional, 4th report message is also included in the 2nd terminal equipment identification; SMF updating the network-level Multicast member table, namely in the network-level Multicast member table, the deletion of the terminal equipment and the 1st 1st Multicast service information corresponding to the entry, or the terminal equipment and the 1st 1st Multicast service failure information corresponding to the entry. The terminal equipment and the 1st 1st Multicast service information corresponding to the entry, including 1st Multicast service with the corresponding identification, and/or, 1st terminal equipment with the corresponding identification, an optional, also includes the identification of the 2nd terminal equipment. For example, the maintenance of the SMF network level Multicast member table as shown in table 3 is shown, if the report message of the 4th UE terminal device21 The end of the request program 1 message, the network-level Multicast members SMF delete the program 1 address corresponding to the terminal device UE21 The information item, the information included in an entry access network equipment RAN2 Identification; or SMF maintenance network-level Multicast member table table 4 shown, if the report message of the 4th UE terminal device21 The end of the request program 1 message, RAN and access network2 Serve the UE21 , SMF in the network-level Multicast member table with the program of the 1 address corresponding to the terminal device UE21 The information in the entry "effective" column is set to 0, to indicate that the row information to be invalid. Optionally, if according to the 4th SMF report message to the network-level Multicast member table have been updated, the network-level Multicast members need to send the notification message to the UPF, the known UPF, 1st Multicast service should be in the corresponding member in the 1st terminal equipment is removed, so as to be received UPF 1st of the Multicast service data packet, not to the 1st terminal device. The network-level Multicast member notification message, can include the updated network level Multicast member table, or the updated network level Multicast members in a table corresponding to the 1st Multicast service all the effective information item, or for indicating the deletion of the terminal equipment and the 1st 1st Multicast service with the information item corresponding to the instruction information. Step 219, SMF judging its services in the network whether there are members of the 1st of the Multicast service. The SMF judging its services in the network whether there are members of the 1st Multicast service, including for example, the report message of the SMF read in 4th 1st Multicast service address, SMF checking for updates of the network-level Multicast member table, if one has not been associated with the 1st Multicast service effective information item, may be considered not members of the 1st of the Multicast service. Alternatively, the invention can also send the inquiry message SMF, confirming its services to the terminal equipment of whether there are members of the 1st Multicast service, in particular including such as IGMP/MLD SMF sends query message, for inquiring its services in a network, whether there is still need receiving 1st Multicast service of the terminal device, or whether it also need to receive any Multicast service of the terminal device, the query message can be SMF through by the AMF and RAN equipment sends to the terminal equipment, or through by the SMF UPF and RAN equipment sends to the terminal device, terminal device receives the inquiry message, if so 1st Multicast service demand or other Multicast service demand, will send the indicates that the operational requirements of the report message to the SMF, specific sending process can reference steps 202 - step 204. According to the received SMF can be any terminal apparatus to send the Multicast service demand that the 1st or arbitrary Multicast the operational requirements of the report message, more new maintaining the network-level Multicast member table. If SMF after sending inquiry information in a section of the setting time is not received in any terminal equipment request receiving 1st the report message of the Multicast service, the SMF can be considered in the network of its services, do not have the members of the 1st of the Multicast service. Step 220, SMF to 2nd UPF sends the notification message, the notification message for indicating the 2nd UPF is disconnected from the network equipment established by 1st Multicast connection. For example, combining step 219, SMF judging its services in the network whether there are members of the 1st Multicast service, if the judging the negative, SMF UPF 2nd is to send a notification message, indicating UPF 1st removed with the network equipment on the Multicast service connection. Step 221, UPF to 2nd request message sent by the network device, the 2nd request message is used for UPF request to a network device on the 1st Multicast connection of the disconnect. For example, UPF can adopt the IGMP/MLD Multicast management protocol or the like such as PIM Multicast routing protocol, to a network device for transmitting the Multicast service from the 1st (for example in the case of the report of the IGMP leave) or leave 1st Multicast service corresponding Multicast routing tree (for example UPF transmitting leaving the Multicast routing tree branches request message) of the request message. The embodiment of the invention, the network device comprises for example, the Multicast router in a data network, or query node, or multicasting server and the like. Step 220 and step 221 to the optional step, in step 219 of the outcome of the SMF judging its services to the terminal equipment of 1st has not been carried out when the members of the Multicast service. Step 218 to step 221 for the 4th SMF according to the report message, the Multicast connection guiding UPF removed, maintaining the network-level Multicast member table specific to realize the procedure. Therefore, in the application embodiment, SMF processing terminal equipment of the report message, maintaining the network-level Multicast member table maintenance UPF guiding the gateway device to the network equipment of the Multicast connection, UPF from the network device receiving the Multicast service data packet, to its copy, and in accordance with the QoS rules SMF configuration, to the unicast mode through RAN equipment to the terminal device sends the Multicast service data packet, so that the terminal device can obtain the Multicast service through the wireless network. Figure 8 is the illustrative flow chart of 5 G network configuration, according to the application of a transmission of the Multicast service method 300. In the method 300 in, Multicast service management function management device and terminal device providing the Multicast service transmission services of a gateway device for the same equipment, namely the user plane function module (user plane function, UPF). As shown in Figure 8, method 300 includes the following content. Steps 301 - step 303 with the method 200 in step 201 - step 203 the same, reference can be made to the corresponding description to understand, in this not to repeat. Step 304, RAN equipment to the Multicast service management function management device (such as the application of the embodiment of the UPF) sends a request receiving 1st Multicast service message. In an optional manner, UPF RAN equipment to 1st Multicast service request is transmitted to the receiving of the message process comprises: RAN device receives the 1st 2nd terminal apparatus to send the report message, then through RAN equipment with the interface between the UPF (for example N3 interface) directly to the UPF sending the 2nd report message. For example, 1st terminal device through the user plane data packet to the RAN equipment sending the 2nd report message, the RAN equipment can be directly via the 1st between the terminal equipment and the UPF N3 tunnel, UPF comprising said 2nd to send the report message of the user plane data packet. Another kind of available in the way, UPF RAN equipment to 1st Multicast service request is transmitted to the receiving of the message process comprises: RAN device receives the 1st 2nd terminal apparatus to send the report message, then by such as the N2 interface to send the report message of the AMF 2nd, AMF by such as the N11 interface to send the report message of the SMF 2nd, then SMF by such as the N4 interface to send the report message of the 2nd UPF. For example, when the 1st terminal device through the NAS message carrying the 2nd report message, the AMF RAN equipment through the NAS taken in the 2nd report message to the SMF, and then the 2nd report message SMF through N4 interface message to send to the UPF. Wherein the terminal device through the 1st NAS message carrying the report message of 2nd mode, reference can be made to method 200 steps 204 in the description related to the understanding. Should be understood, UPF Multicast service management function, can identify the 2nd report message for the 1st 1st terminal device receiving a request for the Multicast service message, for example, 2nd UPF read the report message of the source IP address and the purpose of the IP address, the source address of the IP address of the terminal device for the 1st, the purpose of the IP address is the 1st Multicast service address, is UPF can judge the 1st 2nd report message is sent by the terminal device for receiving a request for the 1st of the Multicast service report - IGMP join IGMP report message. Optionally, RAN apparatus has a Multicast service management capabilities, namely RAN apparatus according to the 2nd report message is received, the maintenance of the cell-level Multicast member table (for example RAN equipment configuration IGMP proxy or IGMP snooping function, can read the 1st terminal apparatus to send IGMP join the report or the IGMP leave report, the maintenance of the cell-level Multicast member table). The cell-level Multicast member table, comprising 1st Multicast service identifier, and/or, by the 1st RAN equipment service request of the Multicast service terminal equipment (which includes 1st terminal equipment) corresponding identification, optionally also includes the 2nd terminal equipment identification. RAN apparatus has a Multicast service management capabilities of the specific implementation procedure can reference with the method 200 in step 204 corresponding specific realizing process, reference can be made to the corresponding description to understand, in this not to repeat. Step 305, UPF 2nd report message received, judging whether or not the establishment of the network equipment on the 1st Multicast service connection. Specifically comprising, the UPF read in 1st 2nd report message of the Multicast service address, and 1st terminal equipment identification, it is determined that the terminal device of the 1st 1st Multicast service providing transmission service with the network device whether the UPF established on the 1st Multicast service connection. Alternatively, the 1st 1st for the terminal equipment of the Multicast service providing services with the UPF received the report message of 2nd UPF is a same or different UPF UPF, if the two are different UPF, then the two can be connected through the N9 interface interaction for indicating UPF with the network equipment on the establishment or remove the 1st Multicast connection of the indication information and the corresponding response information, in order to simplify the presentation, an embodiment of the invention will be mainly to two for the same UPF as an example. In one possible example, the UPF can check its maintenance network-level Multicast member table, if one includes the at least one with the 1st multicasting business related effective information item, the UPF has been with the network equipment that the establishment of the 1st Multicast service connection, otherwise that the UPF have not yet established on the network equipment 1st Multicast service connection. The network-level Multicast member table, and wherein with the 1st Multicast service related to the content of the effective information items, can refer to the step 307 of the description. Step 306, UPF to 1st request message sent by the network device, the 1st request message is used for the UPF with the network equipment to the establishment of the 1st Multicast service connection. For example, UPF can adopt the IGMP/MLD Multicast management protocol or the like such as PIM Multicast routing protocol, to the network device to send the used for adding the 1st Multicast service (for example in the IGMP join) or used for adding the 1st Multicast service corresponding Multicast routing tree (for example sending the Multicast routing tree to the graft request message) of the request message. Step 306 is the optional step, in step 305 in the judge UPF have not yet set up on the network equipment connected when the 1st Multicast. Step 307, UPF maintaining the network-level Multicast member table. UPF maintenance network-level Multicast member table, including with each of the Multicast service the corresponding identification, corresponding to each of the Multicast service, also includes the required to receive the Multicast service terminal information pertaining to the device entries, the need to receive the Multicast service of the terminal equipment, such as the 1st terminal equipment, regarded as one of the members of the Multicast service. The information in the entry, including as the Multicast service members corresponding to the identification of the terminal device, the marks can be reference step 203 as described in the "with the 1st terminal equipment identification corresponding to" understand the. The UPF maintaining the network-level Multicast member table, can include for example: UPF read in 1st 2nd report message of the Multicast service identifier, and 1st terminal equipment with the corresponding identification, an optional, UPF 2nd report message can also be read in the identification of the 2nd terminal equipment. If UPF maintenance network-level Multicast member table, have terminal equipment and the 1st 1st Multicast service corresponding valid information item, without the need to upgrade the network-level Multicast member table; otherwise, the network-level Multicast members UPF updated, namely UPF in the network-level Multicast member table, the increase in terminal equipment and the 1st 1st Multicast service information corresponding to the entry, or the terminal equipment and the 1st 1st Multicast service information corresponding to the entry effect. The terminal equipment and the 1st 1st Multicast service information corresponding to the entry, including 1st Multicast service with the corresponding identification, and/or, 1st terminal equipment with the corresponding identification, an optional, also includes the identification of the 2nd terminal equipment. An exemplary, UPF maintenance network level Multicast member table can be in the form of reference method 200 of step 208 in table 3 and table 4 and the corresponding description of the understanding, does not repeat. Step 305 to step 307 for the 2nd UPF according to the report message, the establishment of the Multicast connection, the maintenance of the network-level Multicast member table specific to realize the procedure. Optionally, in the UPF 2nd report message received, can first be network-level Multicast member table maintenance. UPF maintaining the network-level Multicast the member list of the process-specific reference step 307. In the UPF maintaining the network-level Multicast members after the list, UPF, according to 2nd report message, it is determined that the terminal device of the 1st 1st Multicast service providing transmission service with the network device whether the UPF established on the 1st Multicast service connection, this process can be reference step 305. If UPF judging not established with the network equipment on the 1st Multicast service connection, then to the UPF 1st request message sent by the network device, the 1st request message is used for the UPF request with the network equipment to the establishment of the 1st Multicast service connection, this process can be reference step 306. Namely, the above-mentioned step 307 can be in the above-mentioned step 305 - 306 carried out before. For UPF is first maintaining the network-level Multicast member table is the first terminal apparatus is judged as the 1st 1st Multicast service providing transmission service with the network device whether the UPF established on the 1st Multicast service connection, this application is not limited to this. Step 308, UPF RAN sending a notification message to the device. Optionally, the notification message comprises the cell-level Multicast member notification message, the cell-level Multicast member notice information comprises 1st Multicast service identifier, and/or, with the Multicast service members by 1st in the RAN equipment service all terminal equipment corresponding identification; or, the cell-level Multicast member notification message, including for indicating the Multicast service members 1st 1st is added to the terminal equipment of the indication information, the 1st terminal equipment from the stated RAN equipment service. An optional, UPF RAN equipment can be directly to the sending of the notification message, or, to the SMF UPF first sending the notification message, and then sent to the AMF SMF by RAN equipment. Optionally, determining UPF 1st Multicast service data packet gateway device with the transmitting mode of the apparatus between the RAN is unicast or Multicast (in this embodiment as being a unicast mode), UPF also to 2nd RAN apparatus sends the configuration information, the configuration information comprises 2nd for indicating to the UPF RAN equipment sending 1st 1st Multicast service data packet mode indication information. In a possible way, to the SMF RAN equipment in the sending of the notification message, including the 2nd configuration information. In a possible way, the 1st indicating information is implicit included in the UPF SMF in a message to send, then contained in the SMF sending in a message to the RAN equipment, for example in the 1st established between the terminal equipment and the network of the Multicast service in the process of PDU session, SMF RAN AMF is sent to the device via the message includes 1st terminal device-specific transmission tunnel ID, this indicates that the device with the UPF RAN sent between the Multicast service data packet of the 1st unicast; or by the AMF SMF RAN equipment in a message is sent to the Multicast transmission tunnel identifier comprising, indicates that the UPF RAN equipment with the 1st Multicast service data packets sent between the way of Multicast. Step 308 is an optional step, in some cases the need to implement, for example, when the UPF and RAN equipment between the Multicast mode to send multicasting service data packet, and RAN equipment does not have a step 304 described in when the Multicast service management capacity, the need to implement steps 308; when the UPF and RAN equipment (or terminal equipment) between the unicast mode to send the Multicast service data packet, or RAN device has a step 304 described in the ability of the Multicast service management, can not carry out step 308. Step 309, the network equipment to send UPF 1st Multicast service data packet. Step 310, UPF receiving network device to send the 1st Multicast service data packet, the 1st Multicast service data packet copy. In a possible way, the UPF 1st Multicast service data packet copy, including: UPF query the network-level Multicast member table, the UPF know what terminal equipment is under 1st the Multicast service members, then the data packet in accordance with the Multicast member 1st copy number, an optional, UPF can also be copied in the data packet with the added terminal device corresponding to the identification and/or information related to the QoS guarantee. For example, the maintenance of the UPF network level Multicast member information table 3 shown, 1st Multicast service corresponding to the program 1, its members including UE11 , UE12 , UE21 , In the UPF received program 1 of the data packet, based on the network-level Multicast member table, needs to copy the data packet 3 parts, the copied data packet will be sent separately to the UE11 , UE12 , UE21 . An optional, UPF can be replicated in the data packet, add the following information in one or more of the: 1st Multicast service data packet is mapped to QoS flow of identification (for example qos flow identity, QFI), with a terminal equipment of PDU session corresponding to the N3 and the tunnel identifier. Step 311 to step 315 can refer to the method 200 in step 212 to step 216 the description of the understanding, this embodiment does not repeat. Step 316, RAN equipment to the Multicast service management function management device (for example in this embodiment of the UPF) the end of the request is transmitted to the 1st Multicast service message. In an optional manner, UPF RAN equipment to the end of the request is transmitted to the 1st Multicast service message, including: RAN device receives the 1st terminal apparatus to send the report message of the 4th, then through RAN equipment with the interface between the UPF (for example N3 interface) directly to the 4th UPF forwarding the report message. For example, 1st terminal device through the user plane data packet to the 4th RAN equipment sends the report message, the RAN equipment can be directly via the 1st between the terminal equipment and the UPF N3 tunnel, UPF comprising said 4th to send the report message of the user plane data packet. Another kind of available in the way, UPF RAN equipment to the end of the request is transmitted to the 1st Multicast service message, including: RAN device receives the 1st terminal apparatus to send the report message of the 4th, then by such as the N2 interface to send the report message of the AMF 4th, AMF by such as the N11 interface to send the report message of the SMF 4th, then SMF by such as the N4 interface to send the report message of the UPF 4th. For example, when the 1st terminal device through the NAS message carrying the 4th report message, the AMF RAN equipment through the NAS taken in the 4th report message to the SMF, then the 4th SMF report message through N4 interface message to send to the UPF. Wherein the terminal device through the 1st NAS message carrying the report message of 4th mode, reference can be made to method 200 of step 217 in the description related to the understanding. Should be understood, UPF Multicast service management function, can identify the 4th report message for the end of the 1st 1st terminal device request message of the Multicast service, for example: 4th UPF read the report message of the source IP address and the purpose of the IP address, and/or, IGMP message content, the source address of the IP address of the terminal device for the 1st, the purpose of the IP address is 224.0.0 . 2 (special group address, finger segment all of the Multicast router), IGMP type field is displayed as "leaving group message" type, IGMP group address word section is 1st Multicast service address, while the 4th UPF can judge the report message of the request from the terminal apparatus for the 1st 1st IGMP report message of the Multicast service report - IGMP leave; or, 4th UPF read the report message of the source IP address and the purpose of the IP address, the source address is the IP address of the terminal device 1st, IP address is the purpose of 224.0.0 . 2, the 4th UPF can judge the report message of the request from the terminal apparatus for the 1st 1st Multicast service of the report of the IGMP report - IGMP leave message. Step 317, UPF according to the report message of the 4th, maintaining the network-level Multicast member table. UPF maintenance network-level Multicast member table contains content, reference can be made to step 307 in understanding the description of the. According to the report message of the UPF 4th, maintaining the network-level Multicast member table, can include for example: UPF read in 1st 4th report message of the Multicast service identifier, and 1st terminal equipment with the corresponding identification, an optional, UPF also can read the report message of the 2nd 4th in the terminal equipment identification; UPF updating the network-level Multicast member table, namely in the network-level Multicast member table, the deletion of the terminal equipment and the 1st 1st Multicast service information corresponding to the entry, or the terminal equipment and the 1st 1st Multicast service failure information corresponding to the entry. The terminal equipment and the 1st 1st Multicast service information corresponding to the entry, including 1st Multicast service with the corresponding identification, and/or, 1st terminal equipment with the corresponding identification, an optional, also includes the identification of the 2nd terminal equipment. For example, the maintenance of the UPF network level Multicast member table as shown in table 3 is shown, if the report message of the 4th UE terminal device21 The end of the request program 1 message, the network-level Multicast members UPF delete the program 1 address corresponding to the terminal device UE21 The information item, the information included in an entry access network equipment RAN2 Identification; or UPF maintenance network-level Multicast member table table 4 shown, if the report message of the 4th UE terminal device21 The end of the request program 1 message, RAN and access network2 Serve the UE21 , UPF in the network-level Multicast member table with the program of the 1 address corresponding to the terminal device UE21 The information in the entry "effective" column is set to 0, to indicate that the row information to be invalid. Optionally, when the UPF and RAN equipment between the Multicast mode to send multicasting service data packet, and RAN equipment does not have a step 304 described in when the Multicast service management capabilities, if UPF to the network-level Multicast member table have been updated, UPF will send the cell-level Multicast member notification message to the RAN equipment, the RAN equipment known, with the 1st Multicast service should be in the corresponding member in the 1st terminal equipment removed, 1st RAN device receives the data packet when the Multicast service, 1st will cease to be transmitted to the terminal device. The cell-level Multicast member notification message, including the 1st Multicast service identifier, and/or, with the Multicast service members by 1st in the RAN equipment service all terminal equipment corresponding identification; or, the cell-level Multicast member notification message, including for indicating the Multicast service members 1st 1st in removing the indication information of the terminal device, the terminal device by the 1st RAN equipment service. The cell-level Multicast member notification message, can be directly by the UPF RAN equipment to send, or by UPF SMF after transmission to, and then by the SMF RAN device sends to the AMF. Step 318, UPF judging its services in the network whether there are members of the 1st of the Multicast service. The UPF judging its services in the network whether there are members of the 1st Multicast service, including for example, the report message of the UPF read in 4th 1st Multicast service address, UPF checking for updates of the network-level Multicast member table, if one has not been associated with the 1st Multicast service effective information item, may be considered not 1st Multicast service members; an optional, UPF can also be sending inquiry information, confirming its services to the terminal equipment of whether there are members of the 1st Multicast service, specific includes for example the IGMP/MLD UPF sends query message, for inquiring its services in a network, whether there is still need receiving 1st Multicast service of the terminal device, or whether it also need to receive any Multicast service of the terminal device, the query message can be made through the UPF RAN equipment sends to the terminal device, or by the UPF SMF then sent to by the AMF and RAN equipment sends to the terminal device, the terminal device receives the inquiry message, if so 1st Multicast service demand or other Multicast service demand, the return indicating that the operational requirements of the report message to the UPF, reference can be made to the specific manner in step 302 - the step 304, UPF can be according to the received any terminal apparatus to send the Multicast service demand that the 1st or arbitrary Multicast the operational requirements of the report message, more new maintaining the network-level Multicast member table. If UPF after sending inquiry information in a section of the setting time is not received in any terminal equipment request receiving 1st the report message of the Multicast service, the UPF can be considered in the network of its services, do not have the members of the 1st of the Multicast service. Step 319, UPF to 2nd request message sent by the network device, the 2nd request message is used for UPF request to a network device on the 1st Multicast connection of the disconnect. For example, UPF can adopt the IGMP/MLD Multicast management protocol or the like such as PIM Multicast routing protocol, to a network device for transmitting the Multicast service from the 1st (for example in the case of the report of the IGMP leave) or leave 1st Multicast service corresponding Multicast routing tree (for example UPF transmitting leaving the Multicast routing tree branches request message) of the request message. The embodiment of the invention, the network device comprises for example, the Multicast router in a data network, or query node, or multicasting server and the like. Step 319 is the optional step, in step 318 of the outcome of the UPF judging its services to the terminal equipment of 1st has not been carried out when the members of the Multicast service. Step 317 to step 319 for the 4th UPF according to the report message, maintaining the network-level Multicast member table, remove the 1st Multicast connection specific to realize the procedure. Should be understood, method 300 with the method 200 of the difference between the, method 200 in, the Multicast management management device for SMF, in method 300 in, the Multicast management management device for UPF. Therefore, in the application embodiment, UPF processing terminal equipment of the report message, maintaining the network-level Multicast member table of the network equipment to maintain a Multicast connection, UPF from the network device receiving the Multicast service data packet, to its copy, and in accordance with the QoS rules SMF configuration, to the unicast mode through RAN equipment to the terminal device sends the Multicast service data packet, so that the terminal device can obtain the Multicast service through the wireless network. An embodiment of the invention, if the gateway equipment and access network equipment through the Multicast mode when sending Multicast service data packet, the gateway device and access network equipment need to establish 1st channel, said 1st channel is used for transmitting Multicast service data packet. The gateway device below with the access network device 1st channel established between the detailed description. Figure 9 is the illustrative flow chart of 5 G network configuration, according to the application of a transmission of the Multicast service method 400. In the method 400 in, with a group management function management device for SMF, gateway device for UPF. UPF RAN adopted between the devices and the Multicast mode transmits a Multicast service data packet. As shown in Figure 9, method 400 comprises the following content. Step 401, multicasting session management of the management device (for example to support the multicasting of SMF/PGW/MBMS GW) received for triggering the establishment of a Multicast transmission channel of the message, and then triggers the Multicast transmission channel is established procedure. The Multicast transmission channel, means between the gateway device and RAN equipment, used for sending the Multicast service data packet channel (such as sending Multicast service data packet of GTP - U tunnel), exemplary, in 5 G in the framework, the gateway device is UPF, RAN equipment is gNB, established between the UPF and gNB Multicast N3 tunnel; or in 4 G in the framework, the gateway device to the PGW, RAN equipment is eNB, in established between the PGW and eNB Multicast S1 tunnel; or in the MBMS in the framework, the gateway device for MBMS GW, RAN equipment is eNB, in established between the MBMS GW and eNB Multicast M1 tunnel. The trigger multicasting session management of the management device begins to set up the multicasting transmission channel of the flow mode, including but not limited to the following three: First, by the terminal apparatus of the Multicast service request triggering. In this case, used to trigger the establishment of a Multicast transmission channel message, can be for example terminal device based on the Multicast management protocol (such as IGMP/MLD protocol) for sending the request receiving 1st the report message of the Multicast service (such as IGMP join report), such as the 1st SMF received sent by the terminal device for receiving a request for the 1st Multicast service of the report of the IGMP join, choose to support multicasting UPF (multicast UPF, M - UPF), and trigger the UPF and services 1st RAN equipment between the terminal equipment set up the multicasting N3 tunnel, the IGMP join report can be by 1st terminal device is transmitted to the apparatus and UPF RAN SMF, can also be composed of 1st terminal device is sent to the AMF RAN equipment and SMF; also may be for example a terminal apparatus to send the session establishment/modification request message, containing the Multicast service indication information, such as the 1st RAN equipment to the terminal equipment of the AMF sends the session establishment/modification request message, containing the Multicast service indication information, that the terminal apparatus is 1st Multicast service demand, AMF SMF sending the 1st to the terminal equipment of the session establishment/modification request message, wherein the SMF according to the Multicast service indication information, choose to support multicasting UPF, and trigger the UPF and services 1st RAN equipment between the terminal equipment set up the multicasting N3 tunnel, available, and can also be selected SMF UPF reference access point name APN/DNN, information such as the UE position. The second is the service configuration of the network trigger. In this case, in the mobile network service configuration planning required according to pre-established Multicast transmission channel, used to trigger the establishment of a Multicast transmission channel message, can be composed of a mobile service of network management platform (such as BM - SC) to the multicasting session management of the management device (for example SMF/PGW/MBMS GW) sending, trigger the beginning of the establishment procedure of the Multicast transmission channel. The third is the Multicast service platform trigger. In this case, the Multicast service request of the terminal device to the Multicast service platform sends (for example through the application layer protocol to send the service request, the mobile network gateway device in and RAN equipment are not visible), the Multicast service platform located in the mobile network (such as the Multicast service platform for the BMSC) or outside the scope of the mobile network (for example in the data network), the Multicast service platform can move to the equipment in the network (such as the mobile network service management in equipment such as BMSC/PCRF) sends a request for the Multicast service transmission of the message, then the mobile service of network management device to the multicasting session management of the management device (for example SMF/PGW/MBMS GW) for transmitting the trigger set up the multicasting transmission channel message, trigger the beginning of the establishment procedure of the Multicast transmission channel. The following step 4011 - 4016, is to 5 G network architecture as an example of the establishment of the Multicast transmission channel flow. Step 4011, SMF sent to the AMF for establishing Multicast transmission channel of the N11 request message, said request message of the Multicast transmission channel included in the configuration information, the configuration information of the Multicast transmission channel includes the following content of one or more of: Multicast tunnel end point identification (multicast tunnel endpoint identity, M - TEID), Multicast tunnel corresponding to the QoS parameter configuration (including for example the Multicast service corresponding QFI, and/or, the corresponding 5 G QoS label (5 G QoS Identifier, 5 QI), distribution and retention priority (allocation and retention priority, ARP), to ensure that the stream bit rate (guaranteed flow bit rate, GFBR) and other parameters), and Multicast service the corresponding identification, the Multicast source address, Multicast bearing identification and the like. In a possible way, the M - TEID corresponding with a Multicast service, namely different Multicast service corresponding to different Multicast transmission channel; another may be in the way, said M - TEID corresponding with a plurality of Multicast service, UPF and RAN equipment when the Multicast service data packet transmission between, different Multicast service multiplexing with a Multicast transmission channel. Optionally, a plurality of RAN equipment from UPF receive the same data packet when the Multicast service, can use the same M - TEID, namely different RAN equipment configuration with a M - TEID, or different RAN apparatus can also be are respectively provided with different M - TEID. Step 4012, AMF receiving used for setting up the Multicast transmission channel of N2 request message, storage comprising Multicast transmission channel information, and to transmit the RAN equipment used in establishing the Multicast transmission channel request message. Step 4013, RAN equipment receives the Multicast transmission channel for establishing request message, and the return to the AMF Multicast channel confirmation response message or Multicast channel rejection response to the message. If RAN device receiving the request message comprises the Multicast transmission channel configuration information, the configuration information and in accordance with the completion of the Multicast transmission channel configuration, the AMF RAN equipment to return to the Multicast channel confirmation response message, to the core network apparatus for RAN equipment that Multicast transmission channel allocation is finished. Otherwise, return to the AMF RAN equipment Multicast channel rejection response to the message, the core network equipment that used for RAN equipment can not according to said Multicast transmission channel configuration information to set up the Multicast transmission channel. Optionally, RAN equipment can be in the Multicast channel rejection in the response message note does not set up the multicasting transmission channel causes, for example M - TEID RAN equipment configuration with other unicast TEID conflict. Step 4014, AMF receiving RAN device to send the Multicast channel confirmation response message or Multicast channel rejection response to the message, to the SMF forwarding. Step 4015, SMF receiving Multicast channel after the validation response message, to the SMF UPF sends a session of the modification request, including the Multicast transmission channel configuration information, for said Multicast transmission channel configuration information description of the reference step 4011 corresponding content in the understand the; or, SMF receiving Multicast channel rejection response to the message. In an alternative, the multicasting channel establishment fails, the flow ends here. The UPF using unicast manner to the terminal device sends the Multicast service data packet, specific reference can be made to method 200 or method 300 of the description. Another kind of available programmes, SMF receiving Multicast channel rejection response to the message, RAN SMF viewing apparatus cannot establish the reasons for Multicast transmission channel, modify the configuration information of the transmission channel, then executing step 4011. Step 4016, UPF receiving SMF transmitting conversation modification request, the preservation of the Multicast transmission channel configuration information, the configuration of the completed Multicast transmission channel, then to return to the UPF SMF conversation modification response message, used for confirming the completion of the Multicast transmission channel is established. To demonstrate the is, in a way possible, in step 401 before, 1st terminal device has already been established with the mobile network of the Multicast service PDU session, but still does not support the network equipment and RAN equipment between the Multicast transmission mode; or, another may be in the way, step 401 in the 1st terminal equipment and the mobile network establish support Multicast PDU session in the implementation of the process of; or, another may be in the way, step 401 in the 1st terminal equipment and the mobile network to set up the Multicast service carried out before the PDU session. The 1st terminal equipment and the mobile network to set up the Multicast service PDU session process, reference can be made to method 200 in step 201 of the description. Step 402, 1st 2nd terminal apparatus to the terminal apparatus to send the report message of the 1st, 2nd 1st report message to the terminal device receiving a request for the 1st Multicast service message, a report message in the 1st 1st Multicast service with the corresponding identification. Step 402 specific description may refer to the method 200 in step 202 of the description. Alternatively, the 1st Multicast service with the corresponding identification can be the IP address of the 1st of the Multicast service, the communication system can also be agreed in the 1st of the Multicast service that the indication information, can also be established by said 1st Multicast transmission channel identification, for example, for Multicast transmission channel as the 1st 1st Multicast service identification. Should be understood, the application for the 1st Multicast service with the corresponding identification is not necessarily limited, the 1st Multicast service with the corresponding identification can also be other information. Step 402 is an optional step, when the 2nd the terminal apparatus is started when the Multicast service demand, the implementation of the step 402. Optionally, step 402 also can be in step 401 is performed prior to, 2nd terminal equipment to 1st 1st terminal apparatus to send the report message, can be 1st terminal equipment as regarded as Multicast service session connection indication, as step 401 in the terminal device through the 1st RAN equipment to the AMF sends a session establishment request message/modification of the trigger condition. Step 403 to step 404 may refer to the method 200 for in step 203 to step 204 the description of the understanding, does not repeat. In an optional manner, steps 402 - step 404 can be in step 401 is performed prior to, received SMF in step 404 in the 1st RAN sent by the terminal equipment request receiving 1st Multicast service message, the trigger initiates the establishment of a Multicast transmission channel flow, corresponding to the step 401 described in the 1st three triggering mode for, namely by the terminal apparatus of the Multicast service request triggering multicasting session management of the management device begins to set up the multicasting transmission channel flow. Step 405 to step 407, reference can be made to method 200 for in step 205 to step 207 the description of the understanding, does not repeat. Step 408, SMF maintaining the network-level Multicast member table. Step 408 can be a reference method 200 in step 208 the description of the understanding, available, determining SMF 1st Multicast service data packet gateway device with the transmitting mode of the apparatus between the RAN, SMF UPF sends the network level in addition to the notification message from the Multicast members, also to 1st UPF sending configuration information, the configuration information in the 1st, comprising 1st Multicast service for indicating the packet data at the gateway device and RAN equipment between the indication information of the transmit mode. SMF UPF 1st to send configuration information means including: a may be in the way, the SMF 1st configuration information included in the network-level Multicast member notification message to send to the UPF; another may be in the way, the 1st configuration information with the network-level Multicast members together by SMF notification message sent to the UPF; another possible way in, the 1st configuration information with the network-level Multicast members respectively by the notification message sent to the SMF UPF. Optionally, SMF can first maintaining the network-level Multicast member table, then guidance with the network equipment UPF establishment of the 1st Multicast service connection, namely step 408 in step 405 is performed prior to, or step 408 in step 406 is carried out before. Step 409, SMF RAN sending a notification message to the device. Optionally, the notification message comprises the cell-level Multicast member notification message, the cell-level Multicast member notice information comprises 1st Multicast service identifier, and/or, with the Multicast service members by 1st in the RAN equipment service all terminal equipment corresponding identification; or, the cell-level Multicast member notification message, including for indicating the Multicast service members 1st 1st is added to the terminal equipment of the indication information, the 1st terminal equipment from the stated RAN equipment service. The RAN equipment will be according to the cell-level Multicast member notification message, the maintenance of the cell-level Multicast member table, the cell-level Multicast member table and content can be in the form of reference step 404 in the understand the corresponding description. If RAN device has a step 404 described in the Multicast service management capability, without the need to SMF RAN equipment transmitting the cell-level Multicast member notification message, reduce signaling overhead, wireless resources are saved. Optionally, determining SMF 1st Multicast service data packet gateway device with the transmitting mode of the apparatus between the RAN, and/or, the Multicast service data packet in the RAN equipment and between the terminal equipment transmit mode, SMF also to 2nd RAN apparatus sends the configuration information, the configuration information comprises 2nd for indicating to the UPF RAN equipment sending 1st 1st Multicast service data packet mode indication information, and/or, RAN equipment for indicating to the terminal device sends the Multicast service data packet mode 1st 2nd indication information. In a possible way, to the SMF RAN equipment in the sending of the notification message, including the 2nd configuration information. In the example of a possible, through to the AMF SMF RAN equipment can be sending the notification message; or, in the example of another possible, through SMF UPF RAN equipment to send the notification message. Step 410, the network device to send the UPF 1st Multicast service data packet. Step 411, UPF receiving network device to send the 1st Multicast service data packet, the 1st Multicast service data packet copy. The UPF 1st Multicast service data packet copy, including: SMF UPF according to transmitting the network-level Multicast member notification message, informed of the service to the terminal equipment of UPF what is the Multicast service members 1st, and/or, for these terminal equipment in delivery of services of the RAN equipment information, then the data packet is UPF Multicast member services in accordance with the 1st RAN equipment number of copy, an optional, UPF can be copied in the data packet add the following information in one or more of the: with the information related to the QoS guarantee, RAN equipment with the corresponding identification, 1st Multicast service with the corresponding identification and the like. For example, the maintenance of the SMF Multicast member information table 3 shown, 1st Multicast service corresponding to the program 1, its members including UE11 , UE12 , UE21 , Wherein in order to UE11 And UE12 The provision of services for the RAN RAN equipment1 , For UE21 The provision of services for the RAN RAN equipment2 , In the UPF received program 1 of the data packet, according to the SMF for transmitting the network-level Multicast member notification message, need to copy the data packet 2 parts, the copied data packet will be sent separately to the RAN1 And RAN2 . An optional, UPF can be replicated in the data packet, add the following information a or a number of: 1st Multicast service data packet is mapped to QoS flow of identification (QoS flow identity, QFI), with UPF RAN between Multicast tunnel identifier of the device (for example UPF and RAN among the devices corresponding to the Multicast service Multicast transmission tunnel ID M - TEID), 1st Multicast service with the corresponding identification (for example UPF and RAN among the devices corresponding to the 1st Multicast service Multicast transmission tunnel ID M - TEID1, or can be single-mapped to the 1st Multicast service of the other identification). Step 412, UPF 1st RAN device sends to the Multicast service data packet. UPF SMF provided according to QoS related configuration (for example Multicast traffic flow template multicast SDF template), the copy of the 1st Multicast service data packet is mapped to the appropriate QoS flow on, to the RAN equipment transmission. The 1st RAN equipment service for the terminal device, the terminal device is 1st 1st Multicast service of one of the members. Step 413, RAN equipment receives the 1st UPF transmission of Multicast service data packet, to the terminal device sends the 1st 1st Multicast service data packet. In an optional manner, RAN equipment receives the 1st Multicast service in the data packet, the carrying and the 1st Multicast service the corresponding identification, RAN equipment according to said identifier determines that the data packet is the data packet of the 1st Multicast service, and according to the RAN of equipment maintenance and the cell-level Multicast member table, know by the RAN equipment service to the terminal equipment of, what is the Multicast service members 1st. If step 409 in, SMF RAN equipment sends the configuration information contained in the 2nd for indicating the Multicast service data packet in the 1st RAN equipment and terminal equipment between the 2nd indication information sending mode, RAN equipment can be determined in accordance with the 2nd 1st Multicast service indication information of the data packet for the air interface transmitting way unicast or Multicast; or, RAN equipment according to the maintenance of the cell-level Multicast member list comprises an information (for example request 1st Multicast service a number of terminal devices, and/or, these terminal equipment with the RAN equipment between the link quality information), to determine the Multicast service data packet 1st air interface transmitting mode is unicast or Multicast. If RAN equipment to determine the air interface to the terminal device sends the unicast 1st Multicast service data packet, then the received 1st RAN equipment of the Multicast service after data packet copy a plurality of (for example RAN equipment in accordance with its services to the terminal equipment of the 1st the Multicast service members copy number), are sent to these as the Multicast service members 1st of terminal equipment (which includes 1st terminal equipment); or, if the RAN equipment to determine the air interface to the terminal device sends the Multicast mode 1st Multicast service data packet, then the device will be RAN these terminal equipment configuration unified interface scheduling identification, said uniform air interface the scheduling identification corresponding to the 1st Multicast service, 1st RAN equipment of the Multicast service data packet for unifying the air interface a dispatch identifier sent to those as 1st Multicast service terminal of the member device (comprising 1st terminal equipment). Step 414 to step 417 and method 200 in step 214 to the step 217, the same, reference can be made to the corresponding description to understand, in this not to repeat. Step 418, SMF according to the report message of the 4th, maintaining the network-level Multicast member table. SMF maintenance network-level Multicast member table, reference can be made to method 200 of step 208 in understanding the description of the. The 4th SMF according to the report message, maintaining the network-level Multicast member table process, including for example: SMF reading 4th 1st contained in the report message of the Multicast service identifier, and 1st terminal equipment with the corresponding identification, an optional, 4th report message is also included in the 2nd terminal equipment identification; SMF updating the network-level Multicast member table, namely in the network-level Multicast member table, the deletion of the terminal equipment and the 1st 1st Multicast service information corresponding to the entry, or the terminal equipment and the 1st 1st Multicast service failure information corresponding to the entry. The terminal equipment and the 1st 1st Multicast service information corresponding to the entry, including 1st Multicast service with the corresponding identification, and/or, 1st terminal equipment with the corresponding identification, an optional, also includes the identification of the 2nd terminal equipment. For example, the maintenance of the SMF network level Multicast member table as shown in table 3 is shown, if the report message of the 4th UE terminal device21 The end of the request program 1 message, the network-level Multicast members SMF delete the program 1 address corresponding to the terminal device UE21 The information item, the information included in an entry access network equipment RAN2 Identification; or SMF maintenance network-level Multicast member table table 4 shown, if the report message of the 4th UE terminal device21 The end of the request program 1 message, RAN and access network2 Serve the UE21 , SMF in the network-level Multicast member table with the program of the 1 address corresponding to the terminal device UE21 The information in the entry "effective" column is set to 0, to indicate that the row information to be invalid. Optionally, if according to the 4th SMF report message to the network-level Multicast member table have been updated, the network-level Multicast members need to send the notification message to the UPF, the known UPF, 1st Multicast service should be in the corresponding member in the 1st terminal equipment is removed, so as to be received UPF 1st of the Multicast service data packet, not to the 1st terminal device. The network-level Multicast member notification message, can include the updated network level Multicast member table, or the updated network level Multicast members in a table corresponding to the 1st Multicast service all the effective information item, or for indicating the deletion of the terminal equipment and the 1st 1st Multicast service with the information item corresponding to the instruction information. Optionally, if according to the 4th SMF report message to the network-level Multicast member table have been updated, and determining SMF 1st Multicast service data packet gateway device with the RAN equipment transmission between a change in the way (for example by the Multicast mode into the unicast mode), the 1st UPF SMF to send configuration information, the configuration information of the 1st content and transmission mode can be reference step 408 in the description. Optionally, when the RAN equipment does not have a step 404 described in when the Multicast service management capabilities, if according to the 4th SMF report message to the network-level Multicast member table have been updated, SMF transmitting cell-level Multicast member notification message to the RAN equipment, the RAN equipment known, with the 1st Multicast service should be in the corresponding member in the 1st terminal equipment removed, 1st RAN device receives the data packet when the Multicast service, 1st will cease to be transmitted to the terminal device. The cell-level Multicast member notification message, including the 1st Multicast service identifier, and/or, with the Multicast service members by 1st in the RAN equipment service all terminal equipment corresponding identification; or, the cell-level Multicast member notification message, including for indicating the Multicast service members 1st 1st in removing the indication information of the terminal device, the terminal device by the 1st RAN equipment service. The cell-level Multicast member notification message, can be made by SMF UPF RAN equipment to send, or by SMF RAN device sends to the AMF. Optionally, if according to the 4th SMF report message to the network-level Multicast member table have been updated, and determining SMF 1st Multicast service data packet gateway device with the RAN equipment transmission between a change in the way (for example by the Multicast mode into the unicast mode), or Multicast service data packet determined SMF 1st RAN equipment and terminal equipment in a transmission between a change in the way (for example by the Multicast mode into the unicast mode), is transmitted to the 2nd SMF RAN equipment configuration information, the 2nd configuration information to the content and the transmission mode can be reference step 409 in the description. Optionally, according to the 4th SMF report message to the network-level Multicast member table has been updated, if RAN equipment service to the terminal equipment of the Multicast service members have not 1st, and UPF and RAN equipment used for sending the 1st between the Multicast service data packet Multicast transmission channel (for example by the steps 4011 - step 4016 multicasting set up of N3/S1/M1 tunnel) only corresponding to the 1st Multicast service (for example with the mark M - TEID1 corresponding Multicast transmission tunnel, used for sending the 1st Multicast service data packet), the RAN equipment and UPF SMF notice, removing the means for sending the 1st Multicast service data packet Multicast transmission channel; or, if the UPF and RAN equipment used for sending the 1st between the Multicast service data packet Multicast transmission channel can be used for sending the data packet of the plurality of Multicast service, and the service of the RAN equipment in the terminal equipment, does not have any members of the Multicast service, the notification SMF RAN equipment and UPF, removing the means for sending the 1st Multicast service data packet Multicast transmission channel, releases the resources associated with the Multicast transmission channel. The notice SMF RAN equipment and UPF, removing the means for sending the 1st Multicast service data packet Multicast transmission channel, including, To SMF UPF transmission used for removing the Multicast transmission channel request message (for example Multicast service ending request), which comprises the following information in one or more of the: and used for sending the 1st Multicast service data packet Multicast transmission channel corresponding identification (for example Multicast tunnel end point identification M - TEID), 1st Multicast service with the corresponding identification, such as Multicast bearing identification. Means for removing UPF receiving the Multicast transmission channel request message, delete or to activate said request message indicated in the context information of the Multicast transmission channel (for example includes with the Multicast transmission channel related various configuration parameters), the release for the Multicast transmission channel configuration of the resources, and to the return SMF Multicast transmission channel used for confirming the completion of the response message is removed. Sending to the AMF SMF for removing Multicast transmission channel request message. To the AMF RAN apparatus transmitted by the Multicast transmission channel means for removing the request message. RAN device receives the means for removing the Multicast transmission channel request message, delete or to activate said request message indicated in the Multicast transmission channel context information (for example including with said Multicast transmission channel related various configuration parameters), the release for the Multicast transmission channel configuration of the resources, and to return to the AMF is used to identify the Multicast transmission channel to remove the completed response message. Optionally, the receipt of AMF SMF transmission of Multicast transmission channel used for removing of the request message, or upon receipt of the return of RAN equipment used for confirming the Multicast transmission channel is removed after the completion of the corresponding message, delete or to activate said Multicast transmission channel of the context information. To the AMF SMF transmission used for confirming the Multicast transmission channel to remove the completed response message. Step 419 to step 421 can reference the method 200 in step 219 - step 221 understands, does not repeat. Step 418 to step 421 for the 4th SMF according to the report message, maintaining the network-level Multicast member table, removing the used for sending the 1st Multicast service data packet Multicast transmission channel, remove the 1st Multicast connection specific to realize the procedure. Method 400 with the method 200 of the difference between the, method 200 in, Multicast service data packet in the UPF with the terminal apparatus through the unicast transmit between, in method 400 in, with the Multicast service data packet in the UPF RAN equipment through the Multicast mode to send, in RAN equipment between terminal and a Multicast or unicast mode to send. Therefore, in the application embodiment, UPF through Multicast manner to the RAN device sends a Multicast service data packet, saves the return link transmission resources. Figure 10 is the illustrative flow chart of 5 G network configuration, according to the application of a transmission of the Multicast service method 500. In the method 500 in, with a group management function management device for UPF, gateway device for UPF. UPF RAN adopted between the devices and the Multicast mode transmits a Multicast service data packet. As shown in Figure 10, method 500 comprises the following content. Step 501, multicasting session management of the management device (for example to support the multicasting of SMF/PGW/MBMS GW) received for triggering the establishment of a Multicast transmission channel of the message, and then triggers the Multicast transmission channel is established procedure. Step 501 can be reference method 400 in step 401 the description of the understanding, wherein the Multicast transmission path establishing process, reference can be made to method 400 in step 401 in the relative description of (refer to step 4011 - step 4016) understand the. Steps 502 - step 507 can be reference method 300 in step 302 - the step 307 in understanding the description of the. In an optional mode, step 502 - step 505 can be in step 501 is performed prior to, UPF in step 505 is received in the 2nd RAN equipment after the sending of the report message, to send the report message of the SMF 2nd, then trigger the beginning of the establishment procedure of the Multicast transmission channel, corresponding to the step 401 described in the 1st three triggering mode for, namely by the terminal apparatus of the Multicast service request triggering multicasting session management of the management device begins to set up the multicasting transmission channel flow. Step 508, UPF RAN sending a notification message to the device. Optionally, the UPF to RAN device to send the notification message, comprising cell-level Multicast member notification message, the cell-level Multicast member notice information comprises 1st Multicast service identifier, and/or, with the Multicast service members by 1st in the RAN equipment service all terminal equipment corresponding identification; or, the cell-level Multicast member notification message, including for indicating the Multicast service members 1st 1st is added to the terminal equipment of the indication information, the 1st terminal equipment from the stated RAN equipment service. The RAN equipment will be according to the cell-level Multicast member notification message, the maintenance of the cell-level Multicast member table, the cell-level Multicast member table and content can be in the form of reference step 504 in the understand the corresponding description. If RAN device has a step 504 as described in the Multicast service management capability, without the need to UPF RAN equipment sends a notification message to the cell-level Multicast members. Optionally, determining UPF 1st Multicast service data packet gateway device with the transmitting mode of the apparatus between the RAN, and/or, 1st Multicast service data packet in the RAN equipment and between the terminal equipment transmission mode, to send the 2nd UPF RAN device configuration information, the configuration information comprises 2nd for indicating to the UPF RAN equipment sending 1st 1st Multicast service data packet mode indication information, and/or, RAN equipment for indicating to the terminal device sends the Multicast service data packet mode 1st 2nd indication information. In a possible way, to the UPF RAN equipment in the sending of the notification message, including the 2nd configuration information. In one possible example, UPF RAN equipment can be directly to the sending of the notification message, or, in the example of another possible, first to the UPF SMF sending the notification message, and then sent to the AMF SMF by RAN equipment. Step 509, network equipment to send UPF 1st Multicast service data packet. Step 510, UPF receiving network device to send the 1st Multicast service data packet, the 1st Multicast service data packet copy. The UPF 1st Multicast service data packet copy, including: UPF query the network-level Multicast member table, informed of the service to the terminal equipment of UPF what is the Multicast service members 1st, and/or, for these terminal equipment in delivery of services of the RAN equipment information, then the data packet is UPF Multicast member services in accordance with the 1st RAN equipment number of copy, an optional, UPF can be copied in the data packet add the following information in one or more of: with the QoS related to the safety of information, RAN equipment with the corresponding identification, 1st Multicast service with the corresponding identification and the like. For example, the maintenance of the UPF Multicast member information table 3 shown, 1st Multicast service corresponding to the program 1, its members including UE11, UE12, UE21, wherein in order to UE11 and UE12 RAN equipment for the provision of services RAN1, for UE21 RAN equipment for the provision of services RAN2, UPF in the received program 1 of the data packet, based on the network-level Multicast member table, needs to copy the data packet 2 parts, the copied data packet will be sent separately to the RAN1 and RAN2. An optional, UPF can be replicated in the data packet, add the following information a or a number of: 1st Multicast service data packet is mapped to QoS flow of identification (QoS Flow Identity, QFI), with UPF RAN between Multicast tunnel identifier of the device (for example UPF and RAN among the devices corresponding to the Multicast service Multicast transmission tunnel ID M - TEID), 1st Multicast service with the corresponding identification (for example UPF and RAN among the devices corresponding to the 1st Multicast service Multicast transmission tunnel ID M - TEID1, or can be single-mapped to the 1st Multicast service of the other identification). Step 511, UPF 1st RAN device sends to the Multicast service data packet. UPF SMF provided according to QoS related configuration (for example Multicast traffic flow template multicast SDF template), the copy of the 1st Multicast service data packet is mapped to the appropriate QoS flow on, to the RAN equipment transmission. The 1st RAN equipment service for the terminal device, the terminal device is 1st 1st Multicast service of one of the members. Step 512, RAN equipment receives the 1st UPF transmission of Multicast service data packet, to the terminal device sends the 1st 1st Multicast service data packet. In an optional manner, RAN equipment receives the 1st Multicast service in the data packet, the carrying and the 1st Multicast service the corresponding identification, RAN equipment according to said identifier determines that the data packet is the data packet of the 1st Multicast service, and according to the RAN of equipment maintenance and the cell-level Multicast member table, know by the RAN equipment service to the terminal equipment of, what is the Multicast service members 1st. If step 508 in, UPF RAN equipment sends the configuration information contained in the 2nd for indicating the Multicast service data packet in the 1st RAN equipment and terminal equipment between the 2nd indication information sending mode, RAN equipment can be determined in accordance with the 2nd 1st Multicast service indication information of the data packet for the air interface transmitting way unicast or Multicast; or, RAN equipment according to the maintenance of the cell-level Multicast member list comprises an information (for example request 1st Multicast service a number of terminal devices, and/or, these terminal equipment with the RAN equipment between the link quality information), to determine the Multicast service data packet 1st air interface transmitting mode is unicast or Multicast. If RAN equipment to determine the air interface to the terminal device sends the unicast 1st Multicast service data packet, then the received 1st RAN equipment of the Multicast service after data packet copy a plurality of (for example RAN equipment in accordance with its services to the terminal equipment of the 1st the Multicast service members copy number), are sent to these as the Multicast service members 1st of terminal equipment (which includes 1st terminal equipment); or, if the RAN equipment to determine the air interface to the terminal device sends the Multicast mode 1st Multicast service data packet, then the device will be RAN these terminal equipment configuration unified interface scheduling identification, said uniform air interface the scheduling identification corresponding to the 1st Multicast service, 1st RAN equipment of the Multicast service data packet for unifying the air interface a dispatch identifier sent to those as 1st Multicast service terminal of the member device (comprising 1st terminal equipment). Steps 513 - step 516 may refer to the method 300 in step 313 - step 316 understands, the embodiment does not repeat. Step 517, UPF according to the report message of the 4th, maintaining the network-level Multicast member table. According to the report message of the UPF 4th, maintaining the network-level Multicast member table, reference can be made to step 317 the description of the understanding. Optionally, when the RAN equipment does not have a step 504 as described in the Multicast service management capacity, if according to the 4th UPF report message to the network-level Multicast member table have been updated, UPF sending a notification message to the RAN equipment, the RAN UPF to device to send the notification message, comprising cell-level Multicast member notification message, the RAN equipment known, with the 1st Multicast service should be in the corresponding member in the 1st terminal equipment removed, 1st RAN device receives the data packet when the Multicast service, 1st will cease to be transmitted to the terminal device. The cell-level Multicast member notification message, including the 1st Multicast service identifier, and/or, with the Multicast service members by 1st in the RAN equipment service all terminal equipment corresponding identification; or, the cell-level Multicast member notification message, including for indicating the Multicast service members 1st 1st in removing the indication information of the terminal device, the terminal device by the 1st RAN equipment service. The notification message, can be transmitted directly to the UPF RAN equipment, or by sending to the SMF UPF, then by SMF RAN device sends to the AMF. Alternatively, if the UPF according to the 4th report message to the network-level Multicast member table have been updated, and determining UPF 1st Multicast service data packet gateway device with the RAN equipment transmission between a change in the way (for example by the Multicast mode into the unicast mode), or Multicast service data packet determined UPF 1st RAN equipment and terminal equipment in a transmission between a change in the way (for example by the Multicast mode into the unicast mode), is transmitted to the 2nd UPF RAN equipment configuration information, the 2nd configuration information to the content and the transmission mode can be reference step 508 in the description. Optionally, 4th UPF according to the report message to the network-level Multicast member table has been updated, if RAN equipment service to the terminal equipment of the Multicast service members have not 1st, and UPF and RAN equipment used for sending the 1st between the Multicast service data packet Multicast transmission channel (for example by the steps 4011 - step 4016 multicasting set up of N3/S1/M1 tunnel) only corresponding to the 1st Multicast service (for example with the mark M - TEID1 corresponding Multicast transmission tunnel, used for sending the data packet of the 1st Multicast service), is sent to the UPF SMF RAN equipment has been used for indicating Multicast member 1st-free message, notification SMF RAN equipment and UPF, removing the means for sending the 1st Multicast service data packet Multicast transmission channel; or, if the UPF and RAN equipment used for sending the 1st between the Multicast service data packet Multicast transmission channel can be used for sending the data packet of the plurality of Multicast service, and the service of the RAN equipment in the terminal equipment, does not have any members of the Multicast service, is used for sending to the UPF SMF RAN equipment that may not have any Multicast member message, notice SMF RAN equipment and UPF, removing the means for sending the 1st Multicast service data packet Multicast transmission channel. The notice SMF RAN equipment and UPF, removing the means for sending the 1st Multicast service data packet Multicast transmission channel process, reference can be made to method 400 in step 419 in the description, not to repeat. Step 518 - step 519 may refer to the method 300 of steps 318 - step 319 understand the. Step 519 is the optional step, when in step 518 in, UPF judging its services to the terminal equipment of 1st has not been carried out when the members of the Multicast service. Step 517 to step 519 for 4th UPF according to the report message, maintaining the network-level Multicast member table, removing the used for sending the 1st Multicast service data packet Multicast transmission channel, remove the 1st Multicast connection specific to realize the procedure. Should be understood, method 500 with the method 400 of the difference between the, method 400 in, the Multicast management management device for SMF, in method 500 in, the Multicast management management device for UPF. Method 500 with method 300 of the difference between the, method 300 in, Multicast service data packet in the UPF with the terminal apparatus through the unicast transmit between, in method 500 in, with the Multicast service data packet in the UPF RAN equipment through the Multicast mode to send, in RAN equipment between terminal and a Multicast or unicast mode to send. Therefore, in the application embodiment, UPF through Multicast manner to the RAN sending Multicast service data packet, saves the return link transmission resources. Figure 11 is the illustrative flow chart of 5 G network configuration, according to the application of a transmission of the Multicast service method 600. In the method 600 in, Multicast service management function management device for SMF, gateway device for UPF. UPF RAN adopted between the devices and the Multicast mode transmits a Multicast service data packet, RAN equipment with IGMP proxy function. As shown in Figure 11, method 600 includes the following content. Steps 601 - step 603 can reference method 400 in step 401 - step 403 the description of the understanding, does not repeat. Step 604, RAN equipment to the SMF (Multicast service management function management device) sends a request receiving 1st Multicast service message. To the SMF RAN device sending the request message receiving 1st Multicast service, including for example: RAN device receives the 1st 2nd terminal apparatus to send the report message, the 1st 2nd report message to the terminal device receiving a request for the 1st Multicast service message (such as IGMP Join report), the 1st 2nd report message comprises an identification corresponding to the Multicast service, the RAN equipment inspection and maintenance of the cell-level Multicast member table, if the cell-level Multicast member table does not include the report message in the 1st 1st Multicast service with the corresponding identification, or the cell-level Multicast member table of all valid information in the entry, not terminal equipment and with the 1st the corresponding identification corresponding to the Multicast service, the 1st RAN device to request the identity of the Multicast service equipment, to send SMF RAN equipment request receiving 1st Multicast service message (for example RAN equipment sending joining 1st Multicast service of the report of the IGMP Join), which includes the 1st Multicast service with the corresponding identification, and RAN equipment identification (such as the IP address of the RAN equipment), optional, also includes the identification of the 1st terminal equipment or by RAN equipment service all requests of the Multicast service 1st terminal equipment (which includes 1st terminal equipment) identification. In an optional manner, to the SMF UPF RAN equipment by sending RAN equipment request receiving 1st Multicast service message, specifically comprising, RAN equipment to send UPF RAN equipment request receiving 1st Multicast service message, according to the configuration of the UPF SMF multicasting business related message detection rules, identifying the received information is sent RAN equipment with the Multicast service associated with the message, then the received RAN equipment request receiving 1st Multicast service message to send to the SMF. The configuration of the SMF multicasting business related message detection rules, reference can be made to method 200 in step 204 of the description related to the understanding. Another kind of available in the way, RAN equipment via the AMF to send SMF RAN equipment request receiving 1st Multicast service message. This embodiment, RAN apparatus has a Multicast service management capabilities, namely RAN apparatus according to the 2nd report message is received, the maintenance of the cell-level Multicast member table, for example RAN equipment configuration IGMP proxy function, can read the 1st terminal apparatus to send the report or the IGMP join IGMP leave report, the maintenance of the cell-level Multicast member table. The cell-level Multicast member table, comprising 1st Multicast service identifier, and/or, by the 1st RAN equipment service request of the Multicast service terminal equipment (which includes 1st terminal equipment) corresponding identification, optionally also includes the 2nd terminal equipment identification. The RAN apparatus according to the 2nd report message is received, the maintenance of the cell-level Multicast member table, including for example: RAN apparatus reads received the report message of the 2nd, informed of the 1st 1st terminal device receiving a request for the Multicast service, if the RAN of equipment maintenance and the cell-level Multicast member table, has been and 1st Multicast service identifier corresponding 1st terminal equipment effective information entries, are not required to update the cell-level Multicast member table, otherwise, RAN equipment in its maintenance of the cell-level Multicast member table, added with the 1st Multicast service identifier corresponding 1st terminal device the information item, or modify its protection of the cell-level Multicast member table, so that the and 1st Multicast service identifier corresponding 1st the information item into the terminal equipment, the and 1st Multicast service identifier corresponding 1st terminals information entry includes, 1st Multicast service with the corresponding identification, and/or, 1st terminal equipment with the corresponding identification. At this moment, RAN equipment Multicast service management capacity, can read 1st terminal apparatus to send the report or the IGMP join IGMP leave report, the maintenance of the cell-level Multicast member table, if RAN equipment of the cell-level Multicast member table, there has already been a terminal equipment request 1st Multicast service, the RAN equipment does not need to re-to the SMF sending the request to the receiving 1st Multicast service message, can reduce signaling overhead, wireless resources are saved. RAN apparatus can have a Multicast service management capability, without the need to SMF RAN equipment transmitting the cell-level Multicast member notification message, can reduce signaling overhead, wireless resources are saved. An exemplary, RAN equipment maintenance of the cell-level Multicast member table can be in the form of reference method 200 of step 204 in the table 2 and related description understanding. In an optional manner, steps 602 - step 604 can be in step 601 is performed prior to, received SMF in step 604 in the 1st RAN equipment sends request to receive Multicast service message, the trigger initiates the establishment of a Multicast transmission channel flow, corresponding to the method 400 steps 401 described in the 1st three triggering mode for, namely by the terminal apparatus of the Multicast service request triggering multicasting session management of the management device begins to set up the multicasting transmission channel flow. Step 605, SMF judge whether the UPF on 1st with the network to establish a connection relation of the Multicast service. Specifically comprises for example, SMF reading RAN equipment request receiving 1st Multicast service message, judging and RAN equipment set up the multicasting transmission channel of the UPF, whether it had been established with the network equipment on the connection relation of the 1st Multicast service. For example, SMF can check the network-level Multicast member table, if one includes the at least one with the 1st multicasting business related effective information item, the UPF SMF can judge has been with the network equipment on the establishment of the connection relationship of the 1st Multicast service, otherwise UPF SMF can judge that have not yet established on the network equipment 1st Multicast service connection relations. The embodiment of the invention, the network device can be, for example in the data network to support IP Multicast router/gateway, Multicast query node, the Multicast service server equipment. The network-level Multicast member table, and wherein the multicasting business related 1st effective information item of content can refer to steps 608 in understanding the description of the. Step 606, SMF UPF 1st to send the notification message, the notification message for indicating the 1st UPF with the network equipment to the establishment of the 1st Multicast service connection. Specifically comprises for example, combining step 606, SMF judge whether UPF has been established with the network equipment on the connection relation of the 1st Multicast service; if the judging negative, is sent to the SMF UPF 1st notification message, indicating the UPF with the network equipment to the establishment of the 1st Multicast service connection; if it is determined, are not required to carry out step 606 and the step 607. Step 607, UPF to 1st request message sent by the network device, the 1st request message is used for the UPF request with the network equipment to the establishment of the 1st Multicast service connection. For example, UPF can adopt the IGMP/MLD Multicast management protocol or the like such as PIM Multicast routing protocol, to the network device to send the used for adding the 1st Multicast service (for example in the case of the report of the IGMP join) or adding 1st Multicast service corresponding Multicast routing tree (for example UPF sending and joining the Multicast routing tree to the graft request message) of the request message. Step 608, SMF maintaining the network-level Multicast member table. SMF maintenance network-level Multicast member table, including with each of the Multicast service the corresponding identification, corresponding to each of the Multicast service, also includes the required to receive the Multicast service information pertaining to the device entries RAN, available, also includes the RAN equipment service all requests of the Multicast service 1st terminal equipment (such as 1st terminal equipment) identification. An exemplary, SMF maintenance network-level Multicast member table, reference can be made to method 200 of step 208 in table 3 and table 4 in the form of understanding, or reference chart 3 and table 4 removing "terminal equipment identification" corresponding to the content of that row in the form of after understanding. The network-level Multicast member table SMF maintenance process, including for example, SMF reading RAN equipment request receiving 1st Multicast service messages in the 1st Multicast service identifier, and RAN equipment identification. If SMF maintenance network-level Multicast member table, not RAN equipment and 1st Multicast service corresponding valid information item, then the SMF network level Multicast members will be updated, namely SMF will in the network-level Multicast member table, increase RAN equipment and 1st Multicast service corresponding to the information item, or make the RAN equipment and 1st Multicast service information corresponding to the entry effect. If SMF maintenance network-level Multicast member table, there have already been RAN equipment and 1st of the Multicast service information item corresponding to the effective, without the need to upgrade the network-level Multicast member table. The RAN equipment and 1st Multicast service information corresponding to the entry, including 1st Multicast service with the corresponding identification, and/or, RAN equipment identification, an optional, also includes the identification of the 1st terminal equipment or by RAN equipment service all requests of the Multicast service 1st terminal equipment (which includes 1st terminal equipment) identification. An optional, if SMF maintenance network-level Multicast member table, there have already been RAN equipment and 1st of the Multicast service information item corresponding to the effective, if said RAN equipment request receiving 1st Multicast service message carried in the identification of the terminal device, the terminal device identification is the identification of the 1st terminal equipment or by RAN equipment service all requests of the Multicast service 1st terminal equipment (which includes 1st terminal equipment) identification, SMF in the efficient information items can be added in the identification by the terminal device. Alternatively, if the network-level Multicast members SMF table RAN equipment is added with the 1st Multicast service information corresponding to the entry or the commencement of said information items, SMF will send the network-level Multicast member notification message to the UPF, in order to facilitate the UPF 1st Multicast service received the packet, to the RAN equipment transmission. The network-level Multicast member notification message, can include the updated network level Multicast member table, or the updated network level Multicast member table with the 1st Multicast service of all valid information entries corresponding to, or is used for indicating a new increased RAN equipment and with the 1st Multicast service information corresponding to the entry of the indication information. Optionally, determining SMF 1st Multicast service data packet gateway device with the transmitting mode of the apparatus between the RAN, SMF UPF sends the network level in addition to the notification message from the Multicast members, also to 1st UPF sending configuration information. The 1st configuration information, comprising 1st Multicast service for indicating the packet data at the gateway device and RAN equipment between the indication information of the transmit mode. SMF UPF 1st to send configuration information means including: a may be in the way, the SMF 1st configuration information included in the network-level Multicast member notification message to send to the UPF; another may be in the way, the 1st configuration information with the network-level Multicast members together by SMF notification message sent to the UPF; another possible way in, the 1st configuration information with the network-level Multicast members respectively by the notification message sent to the SMF UPF. Optionally, SMF can first maintaining the network-level Multicast member table, then guidance with the network equipment UPF establishment of the 1st Multicast service connection, i.e. the step 608 in step 605 is performed prior to, or step 608 in step 606 before implementation. Steps 609 - step 616 can be reference method 400 in step 409 - step 416 understand the. Step 617, RAN equipment 1st SMF sends a request to the end of the Multicast service message. To the SMF RAN device sending the request message receiving 1st Multicast service, including for example: RAN device receives the 4th 1st terminal apparatus to send the report message, the 4th report message for the 1st 1st terminal device requests the end of the Multicast service message (such as IGMP leave report), the 4th 1st report message comprises an identification corresponding to the Multicast service, the RAN equipment updates its maintenance of cell-level Multicast member table, namely in the cell-level Multicast member table, the deletion of the terminal equipment and the 1st 1st Multicast service information corresponding to the entry or the failure of the information items; if the updated the cell-level Multicast member table of all valid information in the entry, not terminal equipment and with the 1st the corresponding identification corresponding to the Multicast service, the 1st RAN device to request the identity of the Multicast service equipment, SMF RAN device sending the request to the end of the 1st Multicast service message (for example RAN equipment end of transmission 1st Multicast service of the report of the IGMP leave), which includes the 1st Multicast service with the corresponding identification, and RAN equipment identification (such as the IP address of the RAN equipment), optional, also includes the 1st terminal equipment identification. In an optional manner, to the SMF UPF RAN equipment by sending RAN device requests the end of the Multicast message service 1st, specifically comprising, RAN equipment sends the request to the end of the UPF RAN equipment 1st Multicast service message, according to the configuration of the UPF SMF multicasting business related message detection rules, identifying the received information is sent RAN equipment with the Multicast service associated with the message, then the received RAN equipment request receiving 1st Multicast service message to send to the SMF. The configuration of the SMF multicasting business related message detection rules, reference can be made to method 200 in step 217 of the description related to the understanding. Another kind of available in the way, RAN equipment via the AMF to send SMF RAN equipment request receiving 1st Multicast service message. Step 618, SMF maintaining the network-level Multicast member table. SMF maintenance of the content of the network-level Multicast member table, reference can be made to step 608 in understanding the description of the. The network-level Multicast member table SMF maintenance process, including for example, SMF reading RAN equipment request sent from the end of the Multicast service 1st 1st in the message Multicast service identifier, and RAN equipment identification; SMF to the network-level Multicast member updated, that will be SMF network level Multicast member table, delete RAN equipment and 1st Multicast service information corresponding to the entry, or make the RAN equipment and 1st Multicast service failure information corresponding to the entry. The RAN equipment and 1st Multicast service information corresponding to the entry, including 1st Multicast service with the corresponding identification, and/or, RAN equipment identification, an optional, also includes the 1st terminal equipment identification. Alternatively, if the network-level Multicast members SMF delete the RAN equipment and 1st the Multicast service information corresponding to the entry or the failure of said information items, SMF will send the network-level Multicast member notification message to the UPF, in order to facilitate the UPF 1st Multicast service received the packet, not to the RAN equipment transmission. The network-level Multicast member notification message, can include the updated network level Multicast member table, or the updated network level Multicast members in a table corresponding to the 1st Multicast service all the effective information item, or for indicating the deletion of the 1st RAN equipment and with Multicast service information corresponding to the entry of the indication information. Optionally, SMF to the network-level Multicast member after updated, if determined SMF 1st Multicast service data packet gateway device with the RAN equipment transmission between a change in the way (for example by the Multicast mode into the unicast mode), the 1st UPF SMF to send configuration information, the configuration information of the 1st content and transmission mode can be reference method 400 steps 408 in the description. Optionally, SMF to the network-level Multicast member after updated, if determined SMF 1st Multicast service data packet gateway device with the RAN equipment transmission between a change in the way (for example by the Multicast mode into the unicast mode), or Multicast service data packet determined SMF 1st RAN equipment and terminal equipment in a transmission between a change in the way (for example by the Multicast mode into the unicast mode), SMF also to 2nd RAN apparatus sends the configuration information, the 2nd configuration information to the content and the transmission mode can be reference method 400 in step 409 in the description. Optionally, SMF to the network-level Multicast member after updated, if RAN equipment service to the terminal equipment of the Multicast service members have not 1st, and UPF and RAN equipment used for sending the 1st between the Multicast service data packet Multicast transmission channel (such as step 601 in the multicasting set up of N3/S1/M1 tunnel) only corresponding to the 1st Multicast service (for example with the mark M - TEID1 corresponding Multicast transmission tunnel, used for sending the 1st Multicast service data packet), the RAN equipment and UPF SMF notice, removing the means for sending the 1st Multicast service data packet Multicast transmission channel; or, if the UPF and RAN equipment used for sending the 1st between the Multicast service data packet Multicast transmission channel can be used for sending the data packet of the plurality of Multicast service, and the service of the RAN equipment in the terminal equipment, does not have any members of the Multicast service, the notification SMF RAN equipment and UPF, removing the means for sending the 1st Multicast service data packet Multicast transmission channel, releases the resources associated with the Multicast transmission channel. The notice SMF RAN equipment and UPF, removing the means for sending the 1st Multicast service data packet Multicast transmission channel relative description reference can be made to step 418 in the description related to the understanding. Step 619, SMF judging its services in the network whether there are members of the 1st of the Multicast service. The SMF judging its services in the network whether there are members of the 1st Multicast service, including for example, SMF reading RAN equipment request sent from the end of the Multicast service 1st 1st in the message Multicast service identifier; SMF checking for updates of the network-level Multicast member table, if one has not been associated with the 1st Multicast service effective information item, may be considered not 1st Multicast service members; an optional, SMF can also be sending inquiry information, confirming its services to the terminal equipment of whether there are members of the 1st Multicast service, in particular including such as IGMP/MLD SMF sends query message, for inquiring its services in a network, whether there is still need receiving 1st Multicast service of the terminal device, or whether it also need to receive any Multicast service of the terminal apparatus, the inquiry message can be sent to the AMF by SMF through RAN equipment, or by sending to the RAN UPF SMF through device; RAN device receives the query message, inspection and maintenance of the cell-level Multicast member table, recognizing the 1st Multicast service or arbitrary Multicast service member information, if the cell-level Multicast member table is also provided with a 1st Multicast service or arbitrary Multicast service related effective information item, to send SMF RAN equipment that RAN equipment request receiving 1st Multicast service or arbitrary Multicast service message; an optional, RAN equipment in inspection and maintenance of the cell-level Multicast member table before, to its service of the terminal device sends the query message, the query message for inquiring whether the terminal installation also need to receive the 1st Multicast service or arbitrary Multicast service, RAN equipment service terminal equipment (in order to 1st terminal equipment as an example) on receipt of the query message, if the terminal apparatus is 1st 1st Multicast service demand or other Multicast service demand, or 1st terminal equipment service of the terminal apparatus is 2nd 1st Multicast service needs or other Multicast service demand, then the 1st terminal device will send the indicates that the operational requirements of the report message (IGMP Join report) to the RAN equipment, RAN equipment will be according to the report message update its maintenance of the cell-level Multicast member table. In response to the inquiry message SMF, terminal equipment to the RAN equipment sends a request of the Multicast service equipment and RAN SMF report message to request is transmitted to the Multicast service message process, refer to the steps 602 - step 604 in understanding the description of the. According to the received SMF can be arbitrary RAN equipment sends the Multicast service demand that the 1st or arbitrary Multicast the operational requirements of the message, more new maintaining the network-level Multicast member table. If SMF after sending inquiry information in a section of the setting time is not received in any RAN equipment request receiving 1st the report message of the Multicast service, the SMF can be considered in the network of its services, do not have the members of the 1st of the Multicast service. Steps 620 - step 621 can refer to the method 200 in step 220 - step 221 the description of the understanding, does not repeat. Steps 620 and steps 621 to the optional step, in step 619 of the outcome of the SMF judging its services in the network has not been 1st members when the Multicast service. Therefore, in this embodiment, UPF through Multicast manner to the RAN sending Multicast service data packet, saves the return link transmission resources, and the function of the IGMP Proxy RAN equipment configuration, Multicast service management capacity, can replace its services of the terminal equipment to the Multicast service management function management device sends the request associated with the Multicast service message, reduces the return link transmission of the signaling. Figure 12 is the illustrative flow chart of 5 G network configuration, according to the application of a transmission of the Multicast service method 700. In the method 700 in, Multicast service management function management device for UPF, gateway device for UPF. UPF RAN adopted between the devices and the Multicast mode transmits a Multicast service data packet, RAN equipment with IGMP proxy function. As shown in Figure 12, method 700 comprises the following content. Step 701 - step 703 may refer to the method 600 in steps 601 - step 603 the description of the understanding, does not repeat. Step 704, RAN equipment to the UPF (Multicast service management function management device) sends a request receiving 1st Multicast service message. To the UPF RAN device sending the request message receiving 1st Multicast service, including for example: RAN device receives the 1st 2nd terminal apparatus to send the report message, the 1st 2nd report message to the terminal device receiving a request for the 1st Multicast service message (such as IGMP Join report), the 1st 2nd report message comprises an identification corresponding to the Multicast service, the RAN equipment inspection and maintenance of the cell-level Multicast member table, if the cell-level Multicast member table does not include the report message in the 1st 1st Multicast service with the corresponding identification, or the cell-level Multicast member table of all valid information in the entry, not terminal equipment and with the 1st the corresponding identification corresponding to the Multicast service, the 1st RAN device to request the identity of the Multicast service equipment, to send UPF RAN equipment request receiving 1st Multicast service message (for example RAN equipment sending joining 1st Multicast service of the report of the IGMP Join), which includes the 1st Multicast service with the corresponding identification, and RAN equipment identification (such as the IP address of the RAN equipment), optional, also includes the identification of the 1st terminal equipment or by RAN equipment service all requests of the Multicast service 1st terminal equipment (which includes 1st terminal equipment) identification. In an optional manner, RAN equipment to send UPF RAN equipment request receiving 1st Multicast service message process includes: RAN equipment through its with the interface between the UPF (for example N3 interface) directly to the UPF sending the RAN equipment request receiving 1st Multicast service message. For example, RAN equipment can be directly via the 1st between the terminal equipment and the UPF N3 tunnel, or via the RAN equipment with other transmission channel between the UPF (for example Multicast N3 tunnel or used for transmitting Multicast service related request message of the dedicated transmission tunnel), sent to the UPF comprising the RAN equipment request receiving 1st Multicast service message. Another kind of available in the way, RAN equipment to send UPF RAN equipment request receiving 1st Multicast service message process includes: RAN equipment by such as the N2 interface to the sending of the AMF RAN equipment request receiving 1st Multicast service message, by such as the AMF N11 interface to send the SMF RAN equipment request receiving 1st Multicast message service, then SMF by such as the N4 interface to send the UPF RAN equipment request receiving 1st Multicast service message. Should be understood, UPF Multicast service management function, may identify the Multicast service related request message. For example, according to the 1st RAN equipment of the Multicast service receiving a request message of the source IP address and the purpose of the IP address, wherein the source address is the IP address of the RAN equipment, the purpose of the IP address is the 1st Multicast service address, UPF can judge this message as the RAN equipment for sending the request receiving 1st Multicast service report - IGMP join IGMP report message. This embodiment, RAN apparatus has a Multicast service management capabilities, namely RAN apparatus according to the 2nd report message is received, the maintenance of the cell-level Multicast member table, for example RAN equipment configuration IGMP proxy function, can read the 1st terminal apparatus to send the report or the IGMP join IGMP leave report, the maintenance of the cell-level Multicast member table. The cell-level Multicast member table, comprising 1st Multicast service identifier, and/or, by the 1st RAN equipment service request of the Multicast service terminal equipment (which includes 1st terminal equipment) corresponding identification, optionally also includes the 2nd terminal equipment identification. The RAN apparatus according to the 2nd report message is received, the maintenance of the cell-level Multicast member table, including for example: RAN apparatus reads received the report message of the 2nd, informed of the 1st 1st terminal device receiving a request for the Multicast service, if the RAN of equipment maintenance and the cell-level Multicast member table, has been and 1st Multicast service identifier corresponding 1st terminal equipment effective information entries, are not required to update the cell-level Multicast member table, otherwise, RAN equipment in its maintenance of the cell-level Multicast member table, added with the 1st Multicast service identifier corresponding 1st terminal device the information item, or modify its protection of the cell-level Multicast member table, so that the and 1st Multicast service identifier corresponding 1st the information item into the terminal equipment, the and 1st Multicast service identifier corresponding 1st terminals information entry includes, 1st Multicast service with the corresponding identification, and/or, 1st terminal equipment with the corresponding identification. At this moment, RAN equipment Multicast service management capacity, can read 1st terminal apparatus to send the report or the IGMP join IGMP leave report, the maintenance of the cell-level Multicast member table, if RAN equipment of the cell-level Multicast member table, there has already been a terminal equipment request 1st Multicast service, the RAN equipment does not need to re-to the SMF sending the request to the receiving 1st Multicast service message, can reduce signaling overhead, wireless resources are saved. RAN equipment can have Multicast service management capability, without the need to SMF RAN equipment transmitting the cell-level Multicast member notification message, can reduce signaling overhead, wireless resources are saved. An exemplary, RAN equipment maintenance of the cell-level Multicast member table can be in the form of reference method 200 of step 204 in the table 2 and related description understanding. In an optional manner, steps 702 - step 704 can be in step 701 is performed prior to, UPF received in step 704 in the 1st RAN equipment of the Multicast service receiving a request message, a request message is transmitted to the SMF (for example UPF to SMF forwarding said RAN equipment request receiving 1st Multicast service message, or UPF to SMF sending Multicast transmission channel set-up request message), used to trigger the beginning of the establishment procedure of the Multicast transmission channel, corresponding to the method 400 steps 401 described in the 1st three triggering mode for, namely by the terminal apparatus of the Multicast service request triggering multicasting session management of the management device begins to set up the multicasting transmission channel flow. Step 705, UPF judge whether the establishment with the network equipment on the 1st Multicast service connection. Specifically comprises for example, UPF reading RAN equipment request receiving 1st Multicast service message, judges whether it has established with the network equipment on the connection relation of the 1st Multicast service. In one possible example, UPF can check the network-level Multicast member table, if one includes the at least one with the 1st multicasting business related effective information item, then the UPF can judge the establishment has been with the network equipment on the connection relation of the 1st Multicast service, otherwise UPF can judge that have not yet established on the network equipment 1st Multicast service connection relations. The embodiment of the invention, the network device can be, for example in the data network to support IP Multicast router/gateway, Multicast query node, the Multicast service server equipment. The network-level Multicast member table, and wherein the multicasting business related 1st effective information item of content can refer to the step 707 in understanding the description of the. Step 706, UPF to 1st request message sent by the network device, the 1st request message is used for the UPF with the network equipment to the establishment of the 1st Multicast service connection. For example, such as IGMP/MLD UPF can adopt the Multicast management protocol or protocol independent Multicast (Protocol independent multicast, PIM) such as the Multicast routing protocol, to the network device to send the used for adding the 1st Multicast service (for example in the IGMP join) or used for adding the 1st Multicast service corresponding Multicast routing tree (for example sending the Multicast routing tree to the graft request message) of the request message. Step 706 is the optional step, in step 705 in the judge UPF have not yet set up on the network equipment connected when the 1st Multicast. Step 707, UPF maintaining the network-level Multicast member table. UPF maintenance network-level Multicast member table, including with each of the Multicast service corresponding to the identification, corresponding to each of the Multicast service, also includes the required to receive the Multicast service information pertaining to the device entries RAN, optionally, also includes the RAN equipment service all requests of the Multicast service 1st terminal equipment (such as 1st terminal equipment) identification. An exemplary, UPF maintenance network-level Multicast member table, reference can be made to method 200 of step 208 in table 3 and table 4 in the form of understanding, or reference chart 3 and table 4 removing "terminal equipment identification" corresponding to the content of that row in the form of after understanding. The network-level Multicast member table UPF maintenance process, including for example, UPF reading RAN equipment request receiving 1st Multicast service messages in the 1st Multicast service identifier, and RAN equipment identification. If UPF maintenance network-level Multicast member table, not RAN equipment and 1st Multicast service corresponding valid information item, then the UPF network level Multicast members will be updated, namely UPF will in the network-level Multicast member table, increase RAN equipment and 1st Multicast service corresponding to the information item, or make the RAN equipment and 1st Multicast service information corresponding to the entry effect. If UPF maintenance network-level Multicast member table, there have already been RAN equipment and 1st of the Multicast service information item corresponding to the effective, without the need to upgrade the network-level Multicast member table. The RAN equipment and 1st Multicast service information corresponding to the entry, including 1st Multicast service with the corresponding identification, and/or, RAN equipment identification, an optional, also includes the identification of the 1st terminal equipment or by RAN equipment service all requests of the Multicast service 1st terminal equipment (which includes 1st terminal equipment) identification. Alternatively, if the UPF maintenance network-level Multicast member table, there have already been RAN equipment and 1st of the Multicast service information item corresponding to the effective, if said RAN equipment request receiving 1st Multicast service message carried in the identification of the terminal device, the terminal device identification is the identification of the 1st terminal equipment or by RAN equipment service all requests of the Multicast service 1st terminal equipment (which includes 1st terminal equipment) identification, UPF in the efficient information items can be added in the identification by the terminal device. Optionally, UPF can first maintaining the network-level Multicast member table, with the network equipment building on 1st Multicast service connection, i.e. the step 707 in step 705 is performed prior to, or step 707 in step 706 is performed before. Steps 708 - step 715 may refer to the method 500 in step 508 - step 515 understand the. Step 716, RAN equipment 1st UPF sends a request to the end of the Multicast service message. UPF RAN equipment to the end of the request is transmitted to the 1st Multicast service message, including for example: RAN device receives the 4th 1st terminal apparatus to send the report message, the 4th report message for the 1st 1st terminal device requests the end of the Multicast service message (such as IGMP leave report), the 4th 1st report message comprises an identification corresponding to the Multicast service, the RAN equipment updates its maintenance of cell-level Multicast member table, namely in the cell-level Multicast member table, the deletion of the terminal equipment and the 1st 1st Multicast service information corresponding to the entry or the failure of the information items; if the updated the cell-level Multicast member table of all valid information in the entry, not terminal equipment and with the 1st the corresponding identification corresponding to the Multicast service, the 1st RAN device to request the identity of the Multicast service equipment, UPF RAN device sending the request to the end of the 1st Multicast service message (for example RAN equipment end of transmission 1st Multicast service of the report of the IGMP leave), which includes the 1st Multicast service with the corresponding identification, and RAN equipment identification (such as the IP address of the RAN equipment), optional, also includes the 1st terminal equipment identification. In an optional manner, RAN equipment sends the request to the end of the UPF RAN equipment 1st Multicast service message, including: RAN equipment through its with the interface between the UPF (for example N3 interface) directly to the UPF sending the RAN equipment end 1st of the Multicast service request message. For example, RAN equipment can be directly via the 1st between the terminal equipment and the UPF N3 tunnel, or via the RAN equipment with other transmission channel between the UPF (for example Multicast N3 tunnel or used for transmitting Multicast service related request message of the dedicated transmission tunnel), sent to the UPF RAN equipment comprising the end of the 1st Multicast service request message. Another kind of available in the way, RAN equipment sends the request to the end of the UPF RAN equipment 1st Multicast service message, including: RAN equipment by such as the N2 interface to request the sending of the AMF RAN equipment end 1st Multicast service message, by such as the AMF N11 interface to request the sending of the SMF RAN equipment end 1st Multicast message service, then SMF by such as the N4 interface to request the sending of the UPF RAN equipment end 1st Multicast service message. Step 717, UPF maintaining the network-level Multicast member table. UPF maintenance of the content of the network-level Multicast member table, reference can be made to method 500 steps 517 in understanding the description of the. The network-level Multicast member table UPF maintenance process, including for example, UPF reading RAN equipment request sent from the end of the Multicast service 1st 1st in the message Multicast service identifier, and RAN equipment identification; UPF to the network-level Multicast member updated, that will be UPF network level Multicast member table, delete RAN equipment and 1st Multicast service information corresponding to the entry, or make the RAN equipment and 1st Multicast service failure information corresponding to the entry. The RAN equipment and 1st Multicast service information corresponding to the entry, including 1st Multicast service with the corresponding identification, and/or, RAN equipment identification, an optional, also includes the 1st terminal equipment identification. Alternatively, if the end of the UPF 1st Multicast service according to the request message to the network-level Multicast member table have been updated, and determining UPF 1st Multicast service data packet gateway device with the RAN equipment transmission between a change in the way (for example by the Multicast mode into the unicast mode), or Multicast service data packet determined UPF 1st RAN equipment and terminal equipment in a transmission between a change in the way (for example by the Multicast mode into the unicast mode), is transmitted to the 2nd UPF RAN equipment configuration information, the 2nd configuration information to the content and the transmission mode can be reference step 508 in the description. Alternatively, the end of the UPF 1st Multicast service according to the request message to the network-level Multicast member table has been updated, if RAN equipment service to the terminal equipment of the Multicast service members have not 1st, and UPF and RAN equipment used for sending the 1st between the Multicast service data packet Multicast transmission channel (for example by the steps 4011 - step 4016 multicasting set up of N3/S1/M1 tunnel) only corresponding to the 1st Multicast service (for example with the mark M - TEID1 corresponding Multicast transmission tunnel, used for sending the data packet of the 1st Multicast service), is sent to the UPF SMF RAN equipment has been used for indicating Multicast member 1st-free message, notification SMF RAN equipment and UPF, removing the means for sending the 1st Multicast service data packet Multicast transmission channel; or, if the UPF and RAN equipment used for sending the 1st between the Multicast service data packet Multicast transmission channel can be used for sending the data packet of the plurality of Multicast service, and the service of the RAN equipment in the terminal equipment, does not have any members of the Multicast service, is used for sending to the UPF SMF RAN equipment that may not have any Multicast member message, notice SMF RAN equipment and UPF, removing the means for sending the 1st Multicast service data packet Multicast transmission channel. The notice SMF RAN equipment and UPF, removing the means for sending the 1st Multicast service data packet Multicast transmission channel process, reference can be made to method 500 in step 517 described in, not to repeat. Step 718, UPF judging its services in the network whether there are members of the 1st of the Multicast service. The UPF judging its services in the network whether there are members of the 1st Multicast service, including for example, UPF reading RAN equipment request sent from the end of the Multicast service 1st 1st in the message Multicast service identifier; UPF checking for updates of the network-level Multicast member table, if one has not been associated with the 1st Multicast service effective information item, may be considered not members of the 1st of the Multicast service. Alternatively, the invention can also send the inquiry message UPF, confirming its services to the terminal equipment of whether there are members of the 1st Multicast service, in particular including such as IGMP/MLD UPF sends query message, for inquiring its services in a network, whether there is still need receiving 1st Multicast service of the terminal device, or whether it also need to receive any Multicast service of the terminal device, the query message can be directly sent to the UPF RAN equipment, or by sending to the SMF and then via UPF sent to the AMF RAN equipment. RAN device receives the query message, inspection and maintenance of the cell-level Multicast member table, recognizing the 1st Multicast service or arbitrary Multicast service member information, if the cell-level Multicast member table is also provided with a 1st Multicast service or arbitrary Multicast service related effective information item, to send UPF RAN equipment that RAN equipment request receiving 1st Multicast service or arbitrary Multicast service message. Optionally, RAN equipment in inspection and maintenance of the cell-level Multicast member table before, to its service of the terminal device sends the query message, the query message for inquiring whether the terminal installation also need to receive the 1st Multicast service or arbitrary Multicast service, RAN equipment service terminal equipment (in order to 1st terminal equipment as an example) on receipt of the query message, if the terminal apparatus is 1st 1st Multicast service demand or other Multicast service demand, or 1st terminal equipment service of the terminal apparatus is 2nd 1st Multicast service needs or other Multicast service demand, then the 1st terminal device will send the indicates that the operational requirements of the report message (IGMP Join report) to the RAN equipment, RAN equipment will be according to the report message update its maintenance of the cell-level Multicast member table. In response to the inquiry message UPF, terminal equipment to the RAN equipment sends a request of the Multicast service UPF and RAN equipment to the report message of the request is transmitted to the Multicast service message process, can refer to steps 702 - step 704 in understanding the description of the. According to the received UPF can be arbitrary RAN equipment sends the Multicast service demand that the 1st or arbitrary Multicast the operational requirements of the message, more new maintaining the network-level Multicast member table. If UPF after sending inquiry information in a section of the setting time is not received in any RAN equipment request receiving 1st the report message of the Multicast service, the UPF can be considered in the network of its services, do not have the members of the 1st of the Multicast service. Step 719 can refer to the method 500 in step 519 the description of the understanding, does not repeat. Step 719 is the optional step, when at step 718 in, UPF judging its services in the network has not been 1st members when the Multicast service. Should be understood, method 700 with the method 600 of the difference between the, method 600 in, mobile core network for Multicast service management apparatus for SMF, in method 700 in, mobile core network for Multicast service management management device for UPF. Therefore, in this embodiment, UPF through Multicast manner to the RAN sending Multicast service data packet, saves the return link transmission resources, and the function of the IGMP Proxy RAN equipment configuration, Multicast service management capacity, can read 1st terminal apparatus to send the report or the IGMP join IGMP leave report, the maintenance of the cell-level Multicast member table (without UPF to RAN device sends a cell-level Multicast member notification message), and instead of the service of the terminal apparatus to send the request associated with the Multicast service message, can reduce signaling overhead, save transmission resources. Figure 13 is the illustrative flow chart of 4 G network configuration, according to the application of a transmission of the Multicast service method 800. In the method 800 in, the gateway apparatus and with Multicast service management function management device is a same device, namely the PGW, PGW between terminal and the unicast transmitting Multicast service data packet. In an embodiment of the invention, optional, in the MBMS/eMBMS network structure, gateway device and Multicast service management function management device also can be MBMS GW, specific method steps can reference the method 800, interpretations, the method 800 of MBMS GW in the PGW is replaced, an optional, if the MBMS/eMBMS MCE exists in the network architecture, RAN equipment and the MME is sent between the signaling (for example comprises a Multicast transmission channel set up related message) via the MCE transmission. As shown in Figure 13, method 800 includes the following content. Step 801, 1st RAN equipment such as terminal equipment through evolution base station eNB to the mobility management entity (Mobility Management Entity, MME) sends a session establishment/modification request message, used to trigger the establishment or modification of the packet data network connection (Packet Data Network, PDN) process. Optionally, the connection establishment/modification request message, including the indication information, the indication information for indicating PDN 1st terminal equipment request connected to support Multicast service, the 1st terminal equipment can for example customer premises equipment CPE, home gateway, such as a mobile phone device. Optionally, the indicating information is display indication. For example, in the session establishment/modification request message, setting an indicator bit, the indication bit is 1 when, indicating a request contained in the PDN connection established Multicast service, when the indication bit is 0 when, indicating a request PDN connection established not included in the Multicast service. Optionally, the indication information can also be implicit instructions. For example, according to the prior agreement, for a specific access point name (access point name, APN) or data network name (data network name, DNN) or network slice identification (Slice ID) or slice type marks such as that established in the report of the PDN connected to support the Multicast service, such as the agreement for APN/DNN IPTV, or Slice ID that is a wireless broadband (wireless broadband, WBB)/(Wireless To The x, WTTx) the corresponding network during the slicing, that the requesting the establishment PDN/modified in the connection it is necessary to support the Multicast service. In the establishment of the Multicast service in the PDN connection process, according to the MME need 1st terminal device connection establishment/modification request in the Multicast service indication information, selection of the Multicast service of the PGW, for example Multicast PGW (multicast PGW, m - PGW); the corresponding, according to the PGW is also required which contains the MME 1st terminal equipment/PDN connection establishment of the modification request message display or implicit includes the indication information of the, with the Multicast service policy control and charging rules function (policy contorl and charging rules function, PCRF) IP - CAN session establishment; if the configuration dynamic policy and charging control (policy and charging control, PCC), PGW PCRF obtained from the PCC rules, or obtaining the PGW PCC PCC rules according to static rules. In the establishment of the Multicast service in the course of connecting PDN, PGW can be according to the obtained content contained in the PCC rules, providing the Multicast service related configuration function, including for example: PGW obtaining Multicast service related bearing the weight of the corresponding QoS parameters, configuration a traffic flow template (traffic flow template, TFT), which includes the Multicast service of the TFT, the TFT includes at least a group of Multicast service data packet of the packet-filtering rules (packet filter), can guide the PGW the Multicast service data packet is mapped to the appropriate bearing (such as the packet system bearing EPS bearer) is transmitted on. For the PGW RAN equipment (for example eNB) provide QoS (QoS profile) information configuration described, comprising RAN equipment required and Multicast service related QoS parameter configuration, such as the Multicast service related bearing and the corresponding QoS parameter, wherein PGW can apply to the MME RAN equipment (through the S1 interface) sending said QoS configuration describing information. The 1st RAN equipment to the terminal device through the MME sends the session establishment/modification request message, can be by the Multicast service session connection indication triggering, specifically includes the following ways: 2nd terminal equipment to 1st 1st terminal apparatus to send the report message, the terminal installation of the 1st 1st report message as a Multicast service session connection indication, the 1st report message can be 2nd terminal device receiving a request for the Multicast message service or access request message such as, for example 2nd terminal device is a STB, 1st terminal device is a CPE, STB 1st to the CPE of the report message sent the access request or address allocation request (such as DHCP discover) or Multicast service request (such as IGMP report message), the CPE after 1st report message received, be regarded as Multicast service session connection indication, through the eNB to the MME sends a session establishment/modification request message trigger establishment or modification process of PDN connected; or 1st terminal device according to the application layer service request obtaining Multicast service session connection indication, such as the 1st terminal equipment supporting the Multicast service, if the 1st terminal device application layer services request corresponds to the Multicast service, the terminal devices of the 1st application service request as a Multicast service session connection indication, through the eNB to the MME sends a session establishment/modification request message trigger establishment or modification process of PDN connected; or 1st terminal equipment according to the pre-information in the service-related information obtaining Multicast service session connection indicating, for example, 1st terminal device is a CPE, CPE can be statically configured in the business-related information, or, from the CPE TR - 069 server obtains the management/operation configuration information, which includes the business-related information, if said service-related information indicating that the CPE support comprising the Multicast service in a service (such as the CPE of the configuration information, with the IPTV related DNN/APN), then the CPE can be said service-related information as a Multicast service session connection indication, through RAN equipment to the MME sends a session establishment request message/modified PDN connected trigger establishment or modification of the process. Optionally, 2nd terminal apparatus can include a set-top box STB, Internet television, mobile phone and a computer can support Multicast service of the terminal device. The embodiment of the invention, a plurality of different terminal equipment (including 2nd terminal equipment) can be connected to the 1st terminal device, then through the 1st terminal device connected to the mobile network, the plurality of different terminal device and establishing connection between terminal 1st 1st terminal equipment service of a local area network. Step 802 can be a reference method 200 in step 202 the description of the understanding. Pay attention to, step 802 is an optional step, when the 2nd the terminal apparatus is Multicast service needs, the implementation of the step 802. Alternatively, step 802 may also be in step 801 is performed prior to, namely 1st 2nd terminal apparatus to the terminal apparatus to send the report message of the 1st, can be 1st terminal device as a Multicast service session connection indication, as step 201 in the terminal device through the 1st RAN equipment to the MME sends a session establishment request message/modification of the trigger condition. Step 803, 1st terminal device to send the report message of the 2nd RAN equipment, for 1st 2nd report message of the terminal equipment request receiving 1st Multicast service. In particular refer to the method 200 in step 203 understand the. Step 804, RAN equipment to the Multicast service management function management device (such as the application of the embodiment of the PGW) sends a request receiving 1st Multicast service message. In an optional mode, the PGW RAN equipment to send request receiving 1st Multicast service message, including: RAN device receives the 1st 2nd terminal apparatus to send the report message, through for example with the 1st terminal device corresponding to the PGW EPS bearing to the sending of the 2nd report message. In an alternative form, the apparatus can be through RAN MME to the sending of the PGW 2nd report message. In this way, 1st terminal device through the non-access layer NAS message carrying the 2nd report message to the RAN equipment and sending, RAN equipment received will be the 1st NAS message transmitted to the terminal apparatus corresponding to the MME, by the MME stated NAS carried in the message the 2nd report message or the 2nd report of the key information in the message, transmitted to the PGW. Wherein the terminal device through the 1st NAS message carrying the report message of 2nd mode, reference can be made to method 200 of step 204 in the description related to the understanding. Optionally, RAN apparatus has a Multicast service management capabilities, namely RAN apparatus according to the 2nd report message is received, the maintenance of the cell-level Multicast member table (for example RAN equipment configuration IGMP proxy or IGMP snooping function, can read the 1st terminal apparatus to send IGMP join the report or the IGMP leave report, the maintenance of the cell-level Multicast member table). The cell-level Multicast member table, comprising 1st Multicast service identifier, and/or, by the 1st RAN equipment service request of the Multicast service terminal equipment (which includes 1st terminal equipment) corresponding identification, optionally also includes the 2nd terminal equipment identification. An exemplary, RAN equipment maintenance of the cell-level Multicast member table can be in the form of reference method 200 of step 204 in the description related to understanding, not repeat here. Step 805, PGW according to the 2nd report message, judges whether it has established with the network equipment on the 1st Multicast service connection. Specifically comprising, the PGW read in 1st 2nd report message of the Multicast service address, and 1st terminal equipment identification, it is determined that the terminal device of the 1st 1st Multicast service providing transmission service with the network device whether the PGW established on the 1st Multicast service connection. In one possible example, the PGW can check its maintenance network-level Multicast member table, if one includes the at least one with the 1st multicasting business related effective information item, the PGW has been with the network equipment that the establishment of the 1st Multicast service connection, otherwise that the PGW have not yet established on the network equipment 1st Multicast service connection. The network-level Multicast member table, and/or, wherein the multicasting business related 1st effective information of the contents of the entries, can refer to the step 807 of the description. The embodiment of the invention, the network device can be, for example in the data network to support IP Multicast router/gateway, Multicast query node, the Multicast service server equipment. Step 806, PGW to 1st request message sent by the network device, the 1st request message is used for the establishment of the network device with the PGW 1st Multicast service connection. For example, such as PGW can adopt the IGMP/MLD Multicast management protocol or the like PIM Multicast routing protocol, to the network device to send the used for adding the 1st Multicast service (for example in the IGMP join) or used for adding the 1st Multicast service corresponding Multicast routing tree (for example sending the Multicast routing tree to the graft request message) of the request message. Step 806 is the optional step, in step 805 in the judgment of the PGW have not yet set up on the network equipment connected when the 1st Multicast. Step 807, PGW maintaining the network-level Multicast member table. The maintenance of the PGW network level Multicast member table, including with each of the Multicast service the corresponding identification, corresponding to each of the Multicast service, also includes the required to receive the Multicast service terminal information pertaining to the device entries, the need to receive the Multicast service of the terminal equipment, such as the 1st terminal equipment, regarded as one of the members of the Multicast service. The information in the entry, including as the Multicast service members corresponding to the identification of the terminal device, the marks can be reference step 803 as described in the "with the 1st terminal equipment identification corresponding to" understand the. The PGW maintaining the network-level Multicast member table, can include for example: read in the PGW 1st 2nd report message of the Multicast service identifier, and 1st terminal equipment with the corresponding identification, an optional, PGW can also be read in the 2nd 2nd report message of the terminal equipment identification. If maintenance of the PGW network level Multicast member table, have terminal equipment and the 1st 1st Multicast service corresponding valid information item, without the need to upgrade the network-level Multicast member table; otherwise, the network-level Multicast members of the PGW updated, the PGW in the network-level Multicast member table, the increase in terminal equipment and the 1st 1st Multicast service information corresponding to the entry, or the terminal equipment and the 1st 1st Multicast service information corresponding to the entry effect. The terminal equipment and the 1st 1st Multicast service information corresponding to the entry, including 1st Multicast service with the corresponding identification, and/or, 1st terminal equipment with the corresponding identification, an optional, also includes the identification of the 2nd terminal equipment. PGW maintenance in the form of network level Multicast member table, can reference the method 200 of the meter 3 and table 4 corresponding description of the understanding, it should be noted that, when replaced by the SMF understanding of the application of the embodiment of the PGW. Step 805 to step 807 is according to the PGW 2nd report message, the Multicast connection set up, maintaining the network-level Multicast member table specific to realize the procedure. Optionally, in the PGW 2nd report message received, can first be network-level Multicast member table maintenance. PGW maintaining the network-level Multicast the member list of the process-specific reference step 807. In the PGW maintaining the network-level Multicast members after the list, PGW, according to 2nd report message, it is determined that the terminal device of the 1st 1st Multicast service providing transmission service with the network device whether the PGW established on the 1st Multicast service connection, this process can be reference step 805. If the PGW judging not established with the network equipment on the 1st Multicast service connection, then to the PGW 1st request message sent by the network device, the 1st request message is used for the PGW request with the network equipment to the establishment of the 1st Multicast service connection, this process can be reference step 806. Namely, the above-mentioned step 807 can be in the above-mentioned step 805 - 806 before. The PGW is first maintaining the network-level Multicast member table is the first terminal apparatus is judged as the 1st 1st Multicast service providing transmission service with the network device whether the PGW established on the 1st Multicast service connection, this application is not limited to this. Step 808, PGW to RAN equipment sends a notification message to the cell-level Multicast members. The cell-level Multicast member notice information comprises 1st Multicast service identifier, and/or, with the Multicast service members by 1st in the RAN equipment service all terminal equipment corresponding identification; or, the cell-level Multicast member notification message, including for indicating the Multicast service members 1st 1st is added to the indication information of the terminal device, the terminal device by the 1st RAN equipment service. In one possible example, PGW RAN equipment to the MME can be by sending the cell-level Multicast member notification message; or, in the example of another possible, directly or via the SGW to the PGW RAN equipment transmitting the cell-level Multicast member notification message. Step 808 is an optional step, for example, when the PGW and RAN equipment between the Multicast mode to send multicasting service data packet, and RAN equipment does not have a step 804 as described in the Multicast service management capacity, executing step 808; when the PGW and RAN equipment (or terminal equipment) between the unicast mode to send the Multicast service data packet, or RAN device has a step 804 described in the ability of the Multicast service management, can not carry out step 808. Step 809, the network equipment sends to the PGW 1st Multicast service data packet. Step 810, PGW receiving network device to send the 1st Multicast service data packet, the 1st Multicast service data packet copy. In an optional mode, the PGW 1st Multicast service data packet copy, including: PGW query the network-level Multicast member list, informed of the PGW services to the terminal equipment of what is 1st for the Multicast service members, then the data packet in accordance with the Multicast member 1st copy number. Optionally, PGW can also be copied in the data packet with the added terminal device corresponding to the identification and/or information related to the QoS guarantee. For example, the maintenance of the PGW network level Multicast member information table 3 shown, 1st Multicast service corresponding to the program 1, its members including UE11, UE12, UE21, PGW in the received program 1 of the data packet, the data packet to the copy 3 parts, the copied data packet will be sent separately to the UE11, UE12, UE21. An optional, PGW can be replicated in the data packet, with the added terminal device corresponding to the EPS bearing such as GTP tunnel identifier. Step 811, PGW 1st RAN device sends to the Multicast service data packet. According to the configuration of the PGW QoS related (for example Multicast traffic flow template TFT), the copy of the Multicast service data packet is mapped to the 1st 1st bearing on the EPS of the terminal device, to the RAN equipment transmission. The 1st RAN equipment service for the terminal device, the terminal device is 1st 1st Multicast service of one of the members. Step 812, RAN equipment receives the sending of the PGW 1st Multicast service data packet, to the terminal device sends the 1st 1st Multicast service data packet. The PGW RAN device receives the transmitted 1st Multicast service data packet, to the terminal device sends the 1st 1st Multicast service data packet, including for example, RAN equipment receives the 1st Multicast service in the data packet, the carrying and the 1st terminal device corresponding identification (for example corresponding to the 1st terminal device EPS bearing of the GTP tunnel label), therefore, the 1st RAN apparatus can confirm the Multicast service data packet is to be transmitted to the 1st terminal equipment, optionally, 1st RAN apparatus according to the Multicast service data packet carried in the EPS GTP tunnel ID to determine the bearing, and/or, EPS bearing and distribute the corresponding relation between the bearing RB, RB on the mapping to the data packet, is transmitted to the 1st terminal equipment. The EPS RB between the bearing and the corresponding relationship by RAN apparatus according to management device to send the bearing configuration information is determined. Step 813 to step 815 can refer to the method 200 in step 214 to step 216 understands, does not repeat. Step 816, RAN equipment to the Multicast service management function management device (such as the application of the embodiment of the PGW) the end of the request is transmitted to the 1st Multicast service message. In an optional mode, the PGW RAN equipment to the end of the request is transmitted to the 1st Multicast service message, including: RAN device receives the 1st terminal apparatus to send the report message of the 4th, through for example with the 1st terminal device corresponding to the PGW EPS bearing to sending the 4th report message. In an alternative form, the apparatus can be through RAN MME to the sending of the PGW 4th report message. In this way, 1st terminal device through the non-access layer NAS message carrying the 4th report message to the RAN equipment and sending, RAN equipment received will be the 1st NAS message transmitted to the terminal apparatus corresponding to the MME, by the MME stated NAS carried in the message the report message or the 4th 4th in the key information of the report message, transmitted to the PGW. Wherein the terminal device through the 1st NAS message carrying the report message of 4th mode, reference can be made to method 200 of step 217 in the description related to the understanding. Optionally, RAN apparatus has a Multicast service management capabilities, namely RAN apparatus according to the 4th report message is received, the maintenance of the cell-level Multicast member table. For example RAN equipment configuration IGMP snooping function or when the function of the IGMP proxy, maintenance table 2 indicated by the cell-level Multicast member table, 1st RAN apparatus reads the terminal equipment (UE13) transmission of the report message for the 4th UE13 requesting to leave 1st Multicast service (corresponding to the program 1) of the report of the IGMP leave, RAN equipment can be in its maintenance of the cell-level Multicast member table, delete UE13 program 1 corresponding to the information item, or the UE13 program 1 corresponding to the information item of the "effective" 4th in a column in the memory is 0, to indicate that the row information to be invalid. Step 817, PGW according to the report message of the 4th, maintaining the network-level Multicast member table. PGW maintenance in the form of network level Multicast member table, reference can be made to step 807 in understanding the description of the. According to the report message of the PGW 4th, maintaining the network-level Multicast member table, can include for example: read the report message of the PGW 4th 1st contained in the Multicast service identifier, and 1st terminal equipment with the corresponding identification, an optional, 4th report message is also included in the 2nd terminal equipment identification; PGW to upgrade the network-level Multicast member table, namely in the network-level Multicast member table, the deletion of the terminal equipment and the 1st 1st Multicast service information corresponding to the entry, or the terminal equipment and the 1st 1st Multicast service failure information corresponding to the entry. The terminal equipment and the 1st 1st Multicast service information corresponding to the entry, including 1st Multicast service with the corresponding identification, and/or, 1st terminal equipment with the corresponding identification, an optional, also includes the identification of the 2nd terminal equipment. For example, the maintenance of the PGW network level Multicast member table as shown in table 3 is shown, if the report message of the 4th terminal device UE21 request program the end 1 of the message, the network-level Multicast members in the PGW delete the program 1 address corresponding to the terminal device UE21 the information item, the information included in an entry access network equipment RAN2 identification; or the maintenance of the PGW network level Multicast member table table 4 shown, if the report message of the 4th terminal device UE21 request program the end 1 of the message, and access network RAN2 serve UE21, PGW in the network-level Multicast member table with the program of the 1 address corresponding to the terminal device UE21 information in the entry "effective" column is set to 0, to indicate that the row information to be invalid. Step 818, PGW judging its services in the network whether there are members of the 1st of the Multicast service. The PGW judging its services in the network whether there are members of the 1st Multicast service, including for example, the report message of the PGW read in 4th 1st Multicast service address, PGW checking for updates of the network-level Multicast member table, if one has not been associated with the 1st Multicast service effective information item, may be considered not members of the 1st of the Multicast service. Optionally, PGW can also be sending inquiry information, confirming its services to the terminal equipment of whether there are members of the 1st Multicast service, in particular including such as PGW sends IGMP/MLD query message, for inquiring its services in a network, whether there is still need receiving 1st Multicast service of the terminal device, or whether it also need to receive any Multicast service of the terminal device, the query message can be by the PGW through the MME and RAN equipment sends to the terminal device, or by the PGW through RAN equipment sends to the terminal device, terminal device receives the inquiry message, if so 1st Multicast service demand or other Multicast service demand, will send the indicates that the operational requirements of the report message to the PGW, specific sending process can reference steps 802 - step 804. According to the received PGW can be any terminal apparatus to send the Multicast service demand that the 1st or arbitrary Multicast the operational requirements of the report message, more new maintaining the network-level Multicast member table. If the PGW after sending inquiry information in a section of the setting time is not received in any terminal equipment request receiving 1st the report message of the Multicast service, the PGW can be considered in the network of its services, do not have the members of the 1st of the Multicast service. Step 819, PGW to 2nd request message sent by the network device, the 2nd request message is used for PGW request to a network device on the 1st Multicast connection of the disconnect. For example, such as PGW can adopt the IGMP/MLD Multicast management protocol or the like PIM Multicast routing protocol, to a network device for transmitting the Multicast service from the 1st (for example in the case of the report of the IGMP leave) or leave 1st Multicast service corresponding Multicast routing tree (such as PGW transmitting leaving the Multicast routing tree branches request message) of the request message. The embodiment of the invention, the network device comprises for example, the Multicast router in a data network, or query node, or multicasting server and the like. Step 819 is the optional step, in step 818 in the service of the PGW is judged to have not 1st in the terminal equipment of the implementation of the members of the Multicast service. Step 817 to step 819 is according to the PGW 4th report message, the Multicast connection guiding PGW removed, maintaining the network-level Multicast member table specific to realize the procedure. Should be understood, method 800 with the method 200 or method 300 is different from the structure of the scene is not the same as the application, method 200 is applied to the 5 G under the scene, while method 800 is applied to the 4 G under the scene, mobile core network for Multicast service management apparatus for management of the PGW, method 800 in partial steps of specific implementation procedure can reference method 200 or method 300 in the corresponding steps. Therefore, in the application embodiment, PGW processing terminal equipment of the report message, maintaining the network-level Multicast member table and the guidance of the PGW maintenance to the network gateway device the Multicast connection, PGW from the network device receiving the Multicast service data packet, to its copy, and in accordance with the configuration of the PGW QoS rules, in order to unicast mode through RAN equipment to the terminal device sends the Multicast service data packet, so that the terminal device can obtain the Multicast service through the wireless network. Figure 14 is the illustrative flow chart of 4 G network configuration, according to the application of a transmission of the Multicast service method 900. In the method 900 in, the gateway apparatus and with Multicast service management function management device for the PGW, PGW and RAN equipment between the Multicast service data packet Multicast sent. Optionally, in an embodiment of the invention, in the MBMS/eMBMS network structure, gateway device and Multicast service management function management device also can be MBMS GW, for ease of presentation, an embodiment of the invention, will be mainly to manage equipment and the gateway apparatus is taken as an example for the PGW programme presentation, in the MBMS/eMBMS network architecture of the method step can reference the embodiment, interpretations, the method 900 of MBMS GW in the PGW is replaced, an optional, in the MBMS/eMBMS network structure, if the existence of the MCE, RAN equipment and the MME is sent between the signaling (for example comprises a Multicast transmission channel set up related message) via the MCE transmission. As shown in Figure 14, method 900 includes the following content. Step 901, multicasting session management of the management device (for example to support the multicasting of the PGW/MBMS GW) received for triggering the establishment of a Multicast transmission channel of the message, and then triggers the Multicast transmission channel is established procedure. The Multicast transmission channel, means between the gateway device and RAN equipment, used for sending the Multicast service data packet channel (such as sending Multicast service data packet of GTP - U tunnel), in 4 G in the framework, in the PGW and established between the RAN equipment Multicast S1 tunnel; or in the MBMS in the framework, in the MBMS GW and established between the RAN equipment Multicast M1 tunnel. The trigger multicasting session management of the management device begins to set up the multicasting transmission channel of the flow mode, including but not limited to the following three: First, by the terminal apparatus of the Multicast service request triggering. In this case, used to trigger the establishment of a Multicast transmission channel message, can be for example terminal device based on the Multicast management protocol (such as IGMP/MLD protocol) for sending the request receiving 1st the report message of the Multicast service (such as IGMP join report), such as PGW received 1st sent by the terminal device for receiving a request for the 1st Multicast service of the report of the IGMP join, and services in the PGW 1st RAN equipment between the terminal equipment set up the multicasting S1 tunnel, the IGMP join report can be 1st terminal device by RAN apparatus and MME is sent to the PGW, can also be composed of 1st terminal device directly via the RAN equipment to send to the PGW; also may be for example a terminal apparatus to send the session establishment/modification request message, containing the Multicast service indication information, such as the 1st RAN equipment to the terminal equipment of the MME sends the session establishment/modification request message, containing the Multicast service indication information, that the terminal apparatus is 1st Multicast service demand, to the sending of the PGW MME 1st terminal equipment of session establishment/modification request message, wherein the PGW according to the Multicast service indication information, in the terminal equipment and the services of the 1st RAN equipment set up the multicasting between S1 tunnel. The second is the service configuration of the network trigger. In this case, in the mobile network service configuration planning required according to pre-established Multicast transmission channel, used to trigger the establishment of a Multicast transmission channel message, can be composed of a mobile service of network management platform (such as BM - SC) to the multicasting session management of the management device (such as PGW/MBMS GW) sending, trigger the beginning of the establishment procedure of the Multicast transmission channel. The third is the Multicast service platform trigger. In this case, the Multicast service request of the terminal device to the Multicast service platform sends (for example through the application layer protocol to send the service request, the mobile network gateway device in and RAN equipment are not visible), the Multicast service platform located in the mobile network (such as the Multicast service platform for the BM - SC) or outside the scope of the mobile network (for example in the data network), the Multicast service platform can move to the equipment in the network (such as the mobile network service management in equipment such as BM - SC/PCRF) sends a request for the Multicast service transmission of the message, then the mobile service of network management device to the multicasting session management of the management device (such as PGW/MBMS GW) for transmitting the trigger set up the multicasting transmission channel message, trigger the beginning of the establishment procedure of the Multicast transmission channel. The following step 9011 - 9014, to 4 G network architecture as an example of the establishment of the Multicast transmission channel flow. Step 9011, PGW to the MME for transmitting Multicast transmission channel establishment request message, said request message of the Multicast transmission channel included in the configuration information, the configuration information of the Multicast transmission channel includes the following content of one or more of: Multicast tunnel end point identification M - TEID, Multicast tunnel corresponding to the QoS parameter configuration (including for example the Multicast service corresponding QoS level identifier (quality class identifier, QCI), distribution and retention priority (allocation and retention priority, ARP), guarantee bit rate (guaranteed bit rate, GBR) the maximum bit rate (maximum bit rate, MBR) and other parameters), and Multicast service the corresponding identification, the Multicast source address, Multicast bearing identification and the like. In a possible way, the M - TEID corresponding with a Multicast service, namely different Multicast service corresponding to different Multicast transmission channel; another may be in the way, said M - TEID corresponding with a plurality of Multicast service, PGW and RAN equipment when the Multicast service data packet transmission between, different Multicast service multiplexing with a Multicast transmission channel. Optionally, a plurality of RAN equipment from PGW receive the same data packet when the Multicast service, can use the same M - TEID, namely different RAN equipment configuration with a M - TEID, or different RAN apparatus can also be are respectively provided with different M - TEID. Step 9012, MME for receiving the Multicast transmission channel establishment request message, storing comprising Multicast transmission channel information, and to transmit the RAN equipment used in establishing the Multicast transmission channel request message. Step 9013, RAN equipment receives the Multicast transmission channel for establishing request message, if the RAN device accepts the request message contains the Multicast transmission channel configuration information, the configuration information and in accordance with the completion of the Multicast transmission channel configuration, the MME RAN equipment to return confirmation response message Multicast channel, used for RAN core network apparatus that the Multicast transmission channel allocation is finished. Otherwise, RAN equipment to the MME to return to Multicast channel rejection response to the message, the core network equipment that used for RAN equipment can not according to said Multicast transmission channel configuration information to set up the Multicast transmission channel. Optionally, RAN equipment can be in the Multicast channel rejection in the response message note does not set up the multicasting transmission channel causes, for example M - TEID RAN equipment configuration with other unicast TEID conflict. Step 9014, MME receiving RAN device to send the Multicast channel confirmation response message or Multicast channel rejection response to the message, to the PGW forwarding. PGW receiving Multicast channel confirmation response message, including the Multicast transmission channel configuration information, for said Multicast transmission channel configuration information description of the reference step 9011 the corresponding content in the understand the; according to the PGW Multicast transmission channel configuration information, the configuration of the completed Multicast transmission channel. Or, PGW receiving Multicast channel rejection response to the message. In an alternative, the multicasting channel establishment fails, the flow ends here. The PGW using unicast manner to the terminal device sends the Multicast service data packet, can refer to the embodiment of the invention in the method 800 relative description. Another kind of available programmes, PGW receiving Multicast channel rejection response to the message, check the PGW RAN apparatus cannot establish the reasons for Multicast transmission channel, modify the configuration information of the transmission channel, then executing step 9011. To demonstrate the is, in a way possible, in step 901 before, 1st terminal device has already been established with the mobile network of the Multicast service connected PDN, but still does not support the network equipment and RAN equipment between the Multicast transmission mode; or, another may be in the way, step 901 in the 1st terminal equipment and the mobile network to set up to support the multicasting of the implementation of the process in the PDN connected; or, another may be in the way, step 901 in the 1st terminal equipment and the mobile network to set up the Multicast service implementation PDN before connecting. The 1st terminal equipment and the mobile network to set up the Multicast service connection of the PDN, reference can be made to method 800 in step 801 of the description. Steps 902 - step 904 can reference the method 800 for in steps 802 - step 804 the description of the understanding, does not repeat. In an optional manner, steps 902 - step 904 can be in step 901 is performed prior to, upon receipt of the PGW step 904 in the 1st RAN equipment sends request to receive Multicast service message, the trigger initiates the establishment of a Multicast transmission channel flow, corresponding with a square step 901 is described in three triggering mode for 1st, namely by the terminal apparatus of the Multicast service request triggering multicasting session management of the management device begins to set up the multicasting transmission channel flow. Step 905, PGW according to the judged whether the establishment has been with the network equipment on the 1st Multicast service connection. Specifically comprising, the PGW read in 1st 2nd report message of the Multicast service address, and 1st terminal equipment identification, it is determined that the terminal device of the 1st 1st Multicast service providing transmission service with the network device whether the PGW established on the 1st Multicast service connection. Step 905 can reference the method 800 for in step 805 the description of the understanding, does not repeat. Step 906, PGW to 1st request message sent by the network device, the 1st request message is used for the establishment of the network device with the PGW 1st Multicast service connection. For example, such as PGW can adopt the IGMP/MLD Multicast management protocol or the like PIM Multicast routing protocol, to the network device to send the used for adding the 1st Multicast service (for example in the IGMP join) or used for adding the 1st Multicast service corresponding Multicast routing tree (for example sending the Multicast routing tree to the graft request message) of the request message. Step 906 is the optional step, in step 905 in the judgment of the PGW have not yet set up on the network equipment connected when the 1st Multicast. The other can be selected in a manner, for MBMS/eMBMS architecture, in step 906 in, MBMS GW can also be sent to the BM - SC 1st request message, the request message is used for the request of the 1st BM - SC with the network equipment to the establishment of the 1st Multicast service connection, or can be used to BM - SC request receiving 1st Multicast service data packet. Step 907, PGW maintaining the network-level Multicast member table. Step 907 can reference the method 800 in step 807 the description of the understanding, does not repeat. Step 905 to step 907 to the PGW establishing Multicast connection, maintaining the network-level Multicast member table specific to realize the procedure. Optionally, PGW can first maintaining the network-level Multicast member table, with the network equipment building on 1st Multicast service connection, i.e. the step 907 in step 905 is performed prior to, or step 907 in step 906 is performed before. The PGW is first maintaining the network-level Multicast member table also is first established with the network equipment on the 1st Multicast service connection, this application is not limited to this. Step 908, PGW RAN sending a notification message to the device. The PGW to RAN device to send the notification message comprises a cell-level Multicast members in the notification message, the cell-level Multicast member notice information comprises 1st Multicast service identifier, and/or, with the Multicast service members by 1st in the RAN equipment service all terminal equipment corresponding identification; or, the cell-level Multicast member notification message, including for indicating the Multicast service members 1st 1st is added to the terminal equipment of the indication information, the 1st terminal equipment from the stated RAN equipment service. The RAN equipment will be according to the cell-level Multicast member notification message, the maintenance of the cell-level Multicast member table, the cell-level Multicast member table and content can be in the form of reference step 904 in the understand the corresponding description. If RAN device has a step 904 as described in the Multicast service management capacity, does not need to be PGW RAN equipment to sending the cell-level Multicast member notification message, reduce signaling overhead, wireless resources are saved. Optionally, determining the PGW 1st Multicast service data packet in the RAN apparatus and between the terminal equipment transmit mode, PGW also to 2nd RAN apparatus sends the configuration information, the configuration information comprises 2nd 1st Multicast service for indicating the packet data at the gateway device and RAN equipment between the 1st indication information sending mode, and/or, RAN equipment for indicating to the terminal device sends the Multicast service data packet mode 1st 2nd indication information. In a possible way, to the PGW RAN equipment in the sending of the notification message, including the 1st configuration information. In one possible example, PGW RAN equipment to the MME can be by sending the notification message; or, in the example of another possible, directly or via the SGW to the PGW RAN equipment transmitting the cell-level Multicast member notification message. Step 908 is an optional step, for example, when the PGW and RAN equipment between the Multicast mode to send multicasting service data packet, and RAN equipment does not have a step 903 described in when the Multicast service management capabilities, executing step 908; when the PGW and RAN equipment (or terminal equipment) between the unicast mode to send the Multicast service data packet, or RAN device has a step 903 described in the ability of the Multicast service management, can not carry out step 908. Step 909, the network equipment sends to the PGW 1st Multicast service data packet. Step 910, PGW receiving network device to send the 1st Multicast service data packet, the 1st Multicast service data packet copy. The PGW 1st Multicast service data packet copy, including: PGW query the network-level Multicast member table, informed of the PGW services to the terminal equipment of what is the Multicast service members 1st, and/or, for these terminal equipment in delivery of services of the RAN equipment information, then the data packet in accordance with the PGW is Multicast 1st RAN equipment serving members of the copy number. An optional, PGW can be copied in the data packet add the following information in one or more of: with the information related to the QoS guarantee, RAN equipment with the corresponding identification, 1st Multicast service with the corresponding identification and the like. For example, the maintenance of the PGW Multicast member information table 3 shown, 1st Multicast service corresponding to the program 1, its members including UE11, UE12, UE21, wherein in order to UE11 and UE12 RAN1 to provide services for the apparatus, is UE21 provide services for the RAN2 equipment, in the PGW received program 1 of the data packet, based on a Multicast serving members of the 1st RAN equipment number copy, copy the data packet needs to 2 parts, the copied data packet will be sent separately to the RAN1 equipment and RAN2 equipment. An optional, PGW can be replicated in the data packet, add the following information a or a number of: 1st Multicast service data packet is mapped to bear the weight of the identification, with the PGW RAN equipment between the Multicast tunnel identifier (such as PGW and RAN among the devices corresponding to the Multicast service Multicast transmission tunnel ID M - TEID), 1st Multicast service with the corresponding identification (such as PGW and RAN among the devices corresponding to the 1st Multicast service Multicast transmission tunnel ID M - TEID1, or can be single-mapped to the 1st Multicast service of the other identification). Step 911, PGW 1st RAN device sends to the Multicast service data packet. According to the configuration of the relevant QoS (for example Multicast traffic flow template TFT), the copy of the 1st Multicast service data packet is mapped to the appropriate bearing the upper (for example Multicast bearing), by the PGW RAN equipment with the Multicast transmission tunnel between the RAN equipment to send. The 1st RAN equipment service for the terminal device, the terminal device is 1st 1st Multicast service of one of the members. Step 912, RAN equipment receives the sending of the PGW 1st Multicast service data packet, to the terminal device sends the 1st 1st Multicast service data packet. In an optional manner, RAN equipment receives the 1st Multicast service in the data packet, the carrying and the 1st Multicast service the corresponding identification (for example M - TEID1, or 1st Multicast service of the IP address, or can be single-mapped to the 1st Multicast service of the other identification), RAN equipment according to said identifier determines that the data packet is the data packet of the 1st Multicast service, and according to the RAN of equipment maintenance and the cell-level Multicast , know by the RAN equipment service to the terminal equipment of, what is the Multicast service members 1st. If the step 908 in, sent to the PGW RAN equipment comprising a notification message for indicating in the 1st Multicast service data packet in the RAN equipment and terminal equipment between the 2nd indication information sending mode, RAN equipment can be determined in accordance with the 2nd 1st Multicast service indication information of the data packet for the air interface transmitting way unicast or Multicast; or, RAN equipment according to the maintenance of the cell-level Multicast member list comprises an information (for example request 1st Multicast service a number of terminal devices, and/or, these terminal equipment with the RAN equipment between the link quality information), to determine the Multicast service data packet 1st air interface transmitting mode is unicast or Multicast. If RAN equipment to determine the air interface to the terminal device sends the unicast 1st Multicast service data packet, then the received 1st RAN equipment of the Multicast service after data packet copy a plurality of (for example RAN equipment in accordance with its services to the terminal equipment of the 1st the Multicast service members copy number), are sent to these as the Multicast service members 1st of terminal equipment (which includes 1st terminal equipment); or, if the RAN equipment to determine the air interface to the terminal device sends the Multicast mode 1st Multicast service data packet, then the device will be RAN these terminal equipment configuration unified interface scheduling identification, said uniform air interface the scheduling identification corresponding to the 1st Multicast service, 1st RAN equipment of the Multicast service data packet for unifying the air interface a dispatch identifier sent to those as 1st Multicast service terminal of the member device (comprising 1st terminal equipment). Step 913 to step 915 and method 800 in step 813 to step 815, the same, reference can be made to the corresponding description to understand, in this not to repeat. Step 916, RAN equipment to the Multicast service management function management device (such as the application of the embodiment of the PGW) the end of the request is transmitted to the 1st Multicast service message. In an optional mode, the PGW RAN equipment to the end of the request is transmitted to the 1st Multicast service message, including: RAN device receives the 1st terminal apparatus to send the report message of the 4th, through for example with the 1st terminal device corresponding to the PGW EPS bearing to sending the 4th report message. In an alternative form, the apparatus can be through RAN MME to the sending of the PGW 4th report message. In this way, terminal device 1st through 4th NAS message carrying the report message to the RAN equipment and sending, RAN equipment received will be the 1st NAS message transmitted to the terminal apparatus corresponding to the MME, by the MME stated NAS carried in the message the report message or the 4th 4th in the key information of the report message, transmitted to the PGW. Wherein the terminal device through the 1st NAS message carrying the report message of 4th mode, reference can be made to method 200 of step 217 in the description related to the understanding. Optionally, RAN apparatus has a Multicast service management capabilities, namely RAN apparatus according to the 4th report message is received, the maintenance of the cell-level Multicast member table. For example eNB configuration IGMP snooping function or IGMP proxy function, the maintenance of the table 2 is shown in the cell-level Multicast member table, 1st RAN apparatus reads the terminal equipment (UE13) transmission of the report message for the 4th UE13 requesting to leave 1st Multicast service (corresponding to the program 1) of the report of the IGMP leave, RAN equipment can be in its maintenance of the cell-level Multicast member table, delete UE13 program 1 corresponding to the information item, or the UE13 program 1 corresponding to the information item of the "effective" 4th in a column in the memory is 0, to indicate that the row information to be invalid. Step 917, PGW according to the report message of the 4th, maintaining the network-level Multicast member table. According to the report message of the PGW 4th, maintaining the network-level Multicast member table, can include for example: read the report message of the PGW 4th 1st contained in the Multicast service identifier, and 1st terminal equipment with the corresponding identification, an optional, 4th report message is also included in the 2nd terminal equipment identification; PGW to upgrade the network-level Multicast member table, namely in the network-level Multicast member table, the deletion of the terminal equipment and the 1st 1st Multicast service information corresponding to the entry, or the terminal equipment and the 1st 1st Multicast service failure information corresponding to the entry. The terminal equipment and the 1st 1st Multicast service information corresponding to the entry, including 1st Multicast service with the corresponding identification, and/or, 1st terminal equipment with the corresponding identification, an optional, also includes the identification of the 2nd terminal equipment. PGW maintenance in the form of network level Multicast member table, can reference the method 200 in step 208 for the management of equipment maintenance of network level Multicast member table understand the corresponding description, it should be noted that, when the management apparatus by the understanding SMF replaced by the application embodiment of the PGW. An optional, if RAN equipment does not have a step 916 introduced in the Multicast service management capabilities, if according to the PGW 4th report message to the network-level Multicast member table have been updated, such as in the Multicast member table is the deletion of the terminal equipment and the 1st 1st Multicast service information corresponding to the entry, PGW can send the cell-level Multicast member notification message to the RAN equipment, the RAN equipment known, with the 1st Multicast service should be in the corresponding member in the 1st terminal equipment removed, 1st RAN device receives the data packet when the Multicast service, 1st will cease to be transmitted to the terminal device. To the PGW RAN device sends a cell-level Multicast informed by the members of the content of the message and transmit mode can reference step 908 in the description. Optionally, if according to the PGW 4th report message to the network-level Multicast member table have been updated, and determining the PGW 1st Multicast service data packet with the RAN equipment in a transmission between a change in the way (for example by the Multicast mode into the unicast mode), or determining the PGW 1st Multicast service data packet in the RAN device and terminal device a transmission between a change in the way (for example by the Multicast mode into the unicast mode), then to the PGW RAN equipment sends the configuration information of the 2nd, the 2nd configuration information to the content and the transmission mode can be reference step 908 in the description. Optionally, according to the PGW 4th report message to the network-level Multicast member table has been updated, if RAN equipment service to the terminal equipment of the Multicast service members have not 1st, and the PGW and RAN equipment used for sending the 1st between the Multicast service data packet Multicast transmission channel (for example by step 9011 - step 9014 multicasting set up of S1/M1 tunnel) only corresponding to the 1st Multicast service (for example with the mark M - TEID1 corresponding Multicast transmission tunnel, used for sending the 1st Multicast service data packet), the notification of the PGW RAN equipment, removing the means for sending the 1st Multicast service data packet Multicast transmission channel; or, if the PGW and RAN equipment used for sending the 1st between the Multicast service data packet Multicast transmission channel can be used for sending the data packet of the plurality of Multicast service, and the service of the RAN equipment in the terminal equipment, does not have any members of the Multicast service, the notification of the PGW RAN equipment, removing the means for sending the 1st Multicast service data packet Multicast transmission channel, releases the resources associated with the Multicast transmission channel. The PGW notice RAN equipment, removing the means for sending the 1st Multicast service data packet Multicast transmission channel, including, MME sends to the PGW for removing Multicast transmission channel request message (for example Multicast service ending request), which comprises the following information in one or more of the: and used for sending the 1st Multicast service data packet Multicast transmission channel corresponding identification (for example Multicast tunnel end point identification M - TEID), and Multicast service the corresponding identification, such as Multicast bearing identification. The MME receiving means for removing the Multicast transmission channel request message, to the RAN device forwarding the Multicast transmission channel means for removing the request message. RAN device receives the means for removing the Multicast transmission channel request message, delete or to activate said request message indicated in the Multicast transmission channel context information (for example including with said Multicast transmission channel related various configuration parameters), the release for the Multicast transmission channel configuration of the resources, and to return to the MME is used to identify the Multicast transmission channel to remove the completed response message. An optional, in the MME sends the received of the PGW for removing Multicast transmission channel request message, or MME RAN equipment sends received is used to identify the Multicast transmission channel is removed after the completion of the corresponding message, delete or to activate said Multicast transmission channel of the context information. MME sends to the PGW is used to identify the Multicast transmission channel to remove the completed response message. Step 918, PGW judging its services in the network whether there are members of the 1st of the Multicast service. The PGW judging its services in the network whether there are members of the 1st Multicast service, including for example, the report message of the PGW read in 4th 1st Multicast service address, PGW checking for updates of the network-level Multicast member table, if one has not been associated with the 1st Multicast service effective information item, may be considered not members of the 1st of the Multicast service. Optionally, PGW can also be sending inquiry information, confirming its services to the terminal equipment of whether there are members of the 1st Multicast service, in particular including such as PGW sends IGMP/MLD query message, for inquiring its services in a network, whether there is still need receiving 1st Multicast service of the terminal device, or whether it also need to receive any Multicast service of the terminal device, the query message can be by the PGW through the MME and RAN equipment sends to the terminal device, or by the PGW through RAN equipment sends to the terminal device, terminal device receives the inquiry message, if so 1st Multicast service demand or other Multicast service demand, will send the indicates that the operational requirements of the report message to the PGW, specific sending process can reference steps 902 - step 904. According to the received PGW can be any terminal apparatus to send the Multicast service demand that the 1st or arbitrary Multicast the operational requirements of the report message, more new maintaining the network-level Multicast member table. If the PGW in sends the query message after a period of time set is not received in any terminal equipment request receiving 1st the report message of the Multicast service, the PGW can be considered in the network of its services, do not have the members of the 1st of the Multicast service. Step 919, PGW to 2nd request message sent by the network device, the 2nd request message is used for PGW request to a network device on the 1st Multicast connection of the disconnect. For example, such as PGW can adopt the IGMP/MLD Multicast management protocol or the like PIM Multicast routing protocol, to a network device for transmitting the Multicast service from the 1st (for example in the case of the report of the IGMP leave) or leave 1st Multicast service corresponding Multicast routing tree (such as PGW transmitting leaving the Multicast routing tree branches request message) of the request message. The embodiment of the invention, the network device comprises for example, the Multicast router in a data network, or query node, or multicasting server and the like. The other can be selected in a manner, for MBMS/eMBMS network architecture, in step 919 in, MBMS GW can also be sent to the BM - SC 2nd request message, the 2nd request message for requesting the BM - SC with the network equipment of the Multicast service disconnect on 1st is connected, or can be used to BM - SC cancel request receiving 1st Multicast service data packet. Step 919 to the optional step, in step 918 in the service of the PGW is judged to have not 1st in the network members when the Multicast service. Step 917 to step 919 to the PGW maintaining the network-level Multicast member table, remove the Multicast connection specific to realize the procedure. Should be understood, method 900 and method 400 or method 500 of the difference between the application of the scene is not the same as the network architecture, method 400 or method 500 is applied to the 5 G network architecture, the method 900 is applied to the 4 G network architecture or MBMS/eMBMS architecture. Method 800 and method 900 of the difference between the, method 800 with the PGW in terminal equipment using unicast transmission mode between the Multicast service data packet, method 900 in with the PGW RAN adopted between the devices transmitting the Multicast service data packet Multicast mode, method 900 in partial steps of specific implementation procedure can reference method 800 in the corresponding steps. Therefore, in the application embodiment, PGW processing terminal device requests the beginning or end of the report message of the Multicast service, maintaining the network-level Multicast member table of the network equipment to maintain a Multicast connection, PGW from the network device receiving the Multicast service data packet, to its copy, and in accordance with the configuration of the QoS rules, a Multicast mode to the RAN device sends a Multicast service data packet, then the RAN equipment to unicast or Multicast mode to the terminal device, the terminal device can obtain the Multicast service through the wireless network, saves the return link transmission resources. Figure 15 is the illustrative flow chart of 4 G network configuration, according to the application of a transmission of the Multicast service method 1000. In the method 1000 in, the gateway apparatus and with Multicast service management function management device for the PGW, the PGW and RAN equipment between the Multicast mode transmits a Multicast service data packet, RAN equipment with IGMP proxy function. Optionally, in an embodiment of the invention, in the MBMS/eMBMS network structure, gateway device and Multicast service management function management device also can be MBMS GW, for ease of presentation, an embodiment of the invention, will be mainly to manage equipment and the gateway apparatus is taken as an example for the PGW programme presentation, in the MBMS/eMBMS network architecture of the method step can reference the embodiment, interpretations, the method 1000 of MBMS GW in the PGW is replaced, an optional, if the existence of the MCE, RAN equipment and the MME is sent between the signaling (for example comprises a Multicast transmission channel set up related message) via the MCE transmission. As shown in Figure 15, method 1000 includes the following content. Step 1001 to step 1003 may refer to the method 900 in step 901 to step 903 the description of the understanding, not repeat here. Step 1004, RAN equipment to the Multicast service management function management device (such as the application of the embodiment of the PGW) sends a request receiving 1st Multicast service message. The PGW RAN equipment to send request receiving 1st Multicast service message, including: RAN device receives the 1st 2nd terminal apparatus to send the report message, the 1st 2nd report message to the terminal device receiving a request for the 1st Multicast service message (such as IGMP Join report), the 1st 2nd report message comprises an identification corresponding to the Multicast service, the RAN equipment inspection and maintenance of the cell-level Multicast member table, if the cell-level Multicast member table does not include the report message in the 1st 1st Multicast service with the corresponding identification, or the cell-level Multicast member table of all valid information in the entry, not terminal equipment and with the 1st the corresponding identification corresponding to the Multicast service, the 1st RAN device to request the identity of the Multicast service equipment, transmitting to the PGW RAN equipment request receiving 1st Multicast service message (for example RAN equipment sending joining 1st Multicast service of the report of the IGMP Join), which includes the 1st Multicast service with the corresponding identification, and RAN equipment identification (such as the IP address of the RAN equipment), optional, also includes the identification of the 1st terminal equipment or by RAN equipment service all requests of the Multicast service 1st terminal equipment (which includes 1st terminal equipment) identification. In an optional manner, RAN equipment to the PGW sending RAN equipment request receiving 1st Multicast service message process includes: RAN equipment directly to the PGW sending the RAN equipment request receiving 1st Multicast service message, for example, RAN equipment can be directly via the 1st between the terminal equipment and the PGW EPS bearing, or via the RAN equipment with other transmission channel between the PGW (for example Multicast S1 tunnel or used for transmitting Multicast service related request message of the dedicated transmission tunnel), to the PGW sending comprising said RAN equipment request receiving 1st Multicast service message. Another kind of available in the way, to the PGW RAN equipment sending RAN equipment request receiving 1st Multicast service message process includes: RAN equipment in the first sending the MME RAN equipment request receiving 1st Multicast service message, then the MME to the sending of the PGW RAN equipment request receiving 1st Multicast service message. This embodiment, RAN apparatus has a Multicast service management capabilities, namely RAN apparatus according to the 2nd report message is received, the maintenance of the cell-level Multicast member table. For example RAN equipment configuration IGMP proxy function, can read the 1st terminal apparatus to send the report or the IGMP join IGMP leave report, the maintenance of the cell-level Multicast member table. The cell-level Multicast member table, comprising 1st Multicast service identifier, and/or, by the 1st RAN equipment service request of the Multicast service terminal equipment (which includes 1st terminal equipment) corresponding identification, optionally also includes the 2nd terminal equipment identification. The RAN apparatus according to the 2nd report message is received, the maintenance of the cell-level Multicast member table, including for example: RAN apparatus reads received the report message of the 2nd, informed of the 1st 1st terminal device receiving a request for the Multicast service, if the RAN of equipment maintenance and the cell-level Multicast member table, has been and 1st Multicast service identifier corresponding 1st terminal equipment effective information entries, are not required to update the cell-level Multicast member table, otherwise, RAN equipment in its maintenance of the cell-level Multicast member table, added with the 1st Multicast service identifier corresponding 1st terminal device the information item, or modify its protection of the cell-level Multicast member table, so that the and 1st Multicast service identifier corresponding 1st the information item into the terminal equipment, the and 1st Multicast service identifier corresponding 1st terminals information entry includes, 1st Multicast service with the corresponding identification, and/or, 1st terminal equipment with the corresponding identification. An exemplary, RAN equipment maintenance of the cell-level Multicast member table can be in the form of reference method 200 of step 204 in the description related to the understanding. In an optional mode, step 1002 - step 1004 can be in step 1001 is carried out before, in the PGW received step 1004 in the 1st RAN equipment sends request to receive Multicast service message, the trigger initiates the establishment of a Multicast transmission channel flow, corresponding with a square step 1001 is described in three triggering mode for 1st, namely by the terminal apparatus of the Multicast service request triggering multicasting session management of the management device begins to set up the multicasting transmission channel flow. Step 1005, PGW according to the judged whether the establishment has been with the network equipment on the 1st Multicast service connection. Specifically comprises for example, PGW reading RAN equipment request receiving 1st Multicast service message, judges whether it has established with the network equipment on the connection relation of the 1st Multicast service. For example, PGW can check the network-level Multicast member table, if one includes the at least one with the 1st multicasting business related effective information item, the PGW can judge the establishment has been with the network equipment on the connection relation of the 1st Multicast service, otherwise PGW can judge that have not yet established on the network equipment 1st Multicast service connection relations. The embodiment of the invention, the network device can be, for example data network in IP Multicast support DN router/gateway, Multicast query node, the Multicast service server equipment. Step 1006, PGW to 1st request message sent by the network device, the 1st request message is used for the establishment of the network device with the PGW 1st Multicast service connection. For example, such as PGW can adopt the IGMP/MLD Multicast management protocol or the like PIM Multicast routing protocol, to the network device to send the used for adding the 1st Multicast service (for example in the IGMP join) or used for adding the 1st Multicast service corresponding Multicast routing tree (for example sending the Multicast routing tree to the graft request message) of the request message. Step 1006 is the optional step, in step 1005 in the PGW judging not yet with the network equipment to the establishment of the 1st Multicast connection of the implementation. The other can be selected in a manner, for MBMS/eMBMS architecture, in step 1006 in, MBMS GW can also be sent to the BM - SC 1st request message, the request message is used for the request of the 1st BM - SC with the network equipment to the establishment of the 1st Multicast service connection, or can be used to BM - SC request receiving 1st Multicast service data packet. Step 1007, PGW maintaining the network-level Multicast member table. The maintenance of the PGW network level Multicast member table, including with each of the Multicast service the corresponding identification, corresponding to each of the Multicast service, also includes the required to receive the Multicast service information pertaining to the device entries RAN. Optionally, also includes the RAN equipment service all requests of the Multicast service 1st terminal equipment (such as 1st terminal equipment) identification. An exemplary, maintenance of the PGW network level Multicast member table, reference can be made to method 200 of step 208 in table 3 and table 4 in the form of understanding, or reference chart 3 and table 4 removing "terminal equipment identification" corresponding to the content of that row in the form of after understanding. PGW maintenance network level Multicast member table process, including for example, the reading of the PGW RAN equipment request receiving 1st Multicast service messages in the 1st Multicast service identifier, and RAN equipment identification. If maintenance of the PGW network level Multicast member table, not RAN equipment and 1st Multicast service corresponding valid information item, the PGW to the network-level Multicast members will be updated, namely in the PGW network level Multicast member table, increase RAN equipment and 1st Multicast service corresponding to the information item, or make the RAN equipment and 1st Multicast service information corresponding to the entry effect. If maintenance of the PGW network level Multicast member table, there have already been RAN equipment and 1st of the Multicast service information item corresponding to the effective, without the need to upgrade the network-level Multicast member table. The RAN equipment and 1st Multicast service information corresponding to the entry, including 1st Multicast service with the corresponding identification, and/or, RAN equipment identification, an optional, also includes the identification of the 1st terminal equipment or by RAN equipment service all requests of the Multicast service 1st terminal equipment (which includes 1st terminal equipment) identification. Alternatively, if the PGW maintenance network-level Multicast member table, there have already been RAN equipment and 1st of the Multicast service information item corresponding to the effective, if said RAN equipment request receiving 1st Multicast service message carried in the identification of the terminal device, the terminal device identification is the identification of the 1st terminal equipment or by RAN equipment service all requests of the Multicast service 1st terminal equipment (which includes 1st terminal equipment) identification, PGW in the efficient information items can be added in the identification by the terminal device. Step 1005 to step 1007 for the PGW establishing Multicast connection, maintaining the network-level Multicast member table specific to realize the procedure. Optionally, PGW can first maintaining the network-level Multicast member table, with the network equipment building on 1st Multicast service connection, i.e. the step 1007 in step 1005 is performed prior to, or step 1007 in step 1006 is carried out before. The PGW is first maintaining the network-level Multicast member table also is first established with the network equipment on the 1st Multicast service connection, this application is not limited to this. Step 1008, PGW RAN sending a notification message to the device. The PGW to RAN device to send the notice information, including 2nd configuration information, the configuration information comprises 2nd for indicating to the PGW RAN apparatus sends the Multicast service data packet mode 1st 1st indication information, and/or, RAN equipment for indicating to the terminal device sends the Multicast service data packet mode 1st 2nd indication information. In one possible example, PGW RAN equipment to the MME can be by sending the notification message; or, in the example of another possible, PGW directly or through SGW RAN apparatus to send the notification message. Step 1009, the network equipment sends to the PGW 1st Multicast service data packet. Step 1010, PGW receiving network device to send the 1st Multicast service data packet, the 1st Multicast service data packet copy. The PGW 1st Multicast service data packet copy, including: PGW query the network-level Multicast member table, informed of the PGW services to the terminal equipment of what is the Multicast service members 1st, and/or, for these terminal equipment in delivery of services of the RAN equipment information, then the data packet in accordance with the PGW is 1st Multicast serving members of the equipment quantity RAN copy, an optional, PGW can be copied in the data packet add the following information in one or more of: with the QoS related to the safety of information, RAN equipment with the corresponding identification, 1st Multicast service with the corresponding identification and the like. For example, the maintenance of the PGW Multicast member information table 3 shown, 1st Multicast service corresponding to the program 1, its members including UE11, UE12, UE21, wherein in order to UE11 and UE12 RAN1 to provide services for the apparatus, is UE21 provide services for the RAN2 equipment, in the PGW received program 1 of the data packet, based on a Multicast serving members of the 1st RAN equipment number copy, copy the data packet needs to 2 parts, the copied data packet will be sent separately to the RAN1 equipment and RAN2 equipment. An optional, PGW can be replicated in the data packet, add the following information a or a number of: 1st Multicast service data packet is mapped to bear the weight of the identification, with the PGW RAN equipment between the Multicast tunnel identifier (such as PGW and RAN among the devices corresponding to the Multicast service Multicast transmission tunnel ID M - TEID), 1st Multicast service with the corresponding identification (such as PGW and RAN among the devices corresponding to the 1st Multicast service Multicast transmission tunnel ID M - TEID1, or can be single-mapped to the 1st Multicast service of the other identification). Step 1011, PGW 1st RAN device sends to the Multicast service data packet. According to the configuration of the relevant QoS (for example Multicast traffic flow template TFT), the copy of the 1st Multicast service data packet is mapped to the appropriate bearing the upper, RAN equipment to send. The 1st RAN equipment service for the terminal device, the terminal device is 1st 1st Multicast service of one of the members. Step 1012, RAN equipment receives the sending of the PGW 1st Multicast service data packet, to the terminal device sends the 1st 1st Multicast service data packet. In an optional manner, RAN equipment receives the 1st Multicast service in the data packet, the carrying and the 1st Multicast service the corresponding identification (for example M - TEID1 or 1st IP address of the Multicast service), RAN equipment according to said identifier determines that the data packet is the data packet of the 1st Multicast service, and according to the RAN of equipment maintenance and the cell-level Multicast , know by the RAN equipment service to the terminal equipment of, what is the Multicast service members 1st. If step 1008 in, sent to the PGW RAN equipment contained in the 2nd configuration information used for indicating the Multicast service data packet in the 1st RAN equipment and terminal equipment between the 2nd indication information sending mode, RAN equipment can be determined in accordance with the 2nd 1st Multicast service indication information of the data packet for the air interface transmitting way unicast or Multicast; or, RAN equipment according to the maintenance of the cell-level Multicast member list comprises an information (for example request 1st Multicast service a number of terminal devices, and/or, these terminal equipment with the RAN equipment between the link quality information), to determine the Multicast service data packet 1st air interface transmitting mode is unicast or Multicast. If RAN equipment to determine the air interface to the terminal device sends the unicast 1st Multicast service data packet, then the received 1st RAN equipment of the Multicast service after data packet copy a plurality of (for example RAN equipment in accordance with its services to the terminal equipment of the 1st the Multicast service members copy number), are sent to these as the Multicast service members 1st of terminal equipment (which includes 1st terminal equipment); or, if the RAN equipment to determine the air interface to the terminal device sends the Multicast mode 1st Multicast service data packet, then the device will be RAN these terminal equipment configuration unified interface scheduling identification, said uniform air interface the scheduling identification corresponding to the 1st Multicast service, 1st RAN equipment of the Multicast service data packet for unifying the air interface a dispatch identifier sent to those as 1st Multicast service terminal of the member device (comprising 1st terminal equipment). Step 1013 to step 1015 and method 900 in step 913 to step 915 the same, reference can be made to the corresponding description to understand, in this not to repeat. Step 1016, RAN equipment to the Multicast service management function management device (such as the application of the embodiment of the PGW) the end of the request is transmitted to the 1st Multicast service message. The PGW RAN equipment to the end of the request is transmitted to the 1st Multicast service message, including for example: RAN device receives the 4th 1st terminal apparatus to send the report message, the 4th report message for the 1st 1st terminal device requests the end of the Multicast service message (such as IGMP leave report), the 4th 1st report message comprises an identification corresponding to the Multicast service, the RAN equipment updates its maintenance of cell-level Multicast member table, namely in the cell-level Multicast member table, the deletion of the terminal equipment and the 1st 1st Multicast service information corresponding to the entry or the failure of the information items; if the updated the cell-level Multicast member table of all valid information in the entry, not terminal equipment and with the 1st the corresponding identification corresponding to the Multicast service, the 1st RAN device to request the identity of the Multicast service apparatus, sending the request to the PGW 1st RAN equipment end of the Multicast service message (for example RAN equipment end of transmission 1st Multicast service of the report of the IGMP leave), which includes the 1st Multicast service with the corresponding identification, and RAN equipment identification (such as the IP address of the RAN equipment), optional, also includes the 1st terminal equipment identification. In an optional manner, RAN equipment sends the request to the end of the PGW RAN equipment 1st Multicast service message process includes: RAN equipment directly to the PGW sending the 1st RAN equipment end of the Multicast service request message, for example, RAN equipment can be directly via the 1st between the terminal equipment and the PGW EPS bearing, or via the RAN equipment with other transmission channel between the PGW (for example Multicast S1 tunnel or used for transmitting Multicast service related request message of the dedicated transmission tunnel), to the PGW sending comprising said RAN equipment end 1st of the Multicast service request message. Another kind of available in the way, RAN equipment sends the request to the end of the PGW RAN equipment 1st Multicast service message process includes: RAN equipment in the first sending the MME 1st RAN device requests the end of the Multicast service message, then the MME to the sending of the PGW 1st RAN device requests the end of the Multicast service message. Step 1017, PGW maintaining the network-level Multicast member table. The PGW maintaining the network-level Multicast member table process, including for example, the reading of the PGW RAN equipment request sent from the end of the Multicast service 1st 1st in the message Multicast service identifier, and RAN equipment identification; PGW to the network-level Multicast member updated, that the PGW in the network-level Multicast member table, delete RAN equipment and 1st Multicast service information corresponding to the entry, or make the RAN equipment and 1st Multicast service failure information corresponding to the entry. The RAN equipment and 1st Multicast service information corresponding to the entry, including 1st Multicast service with the corresponding identification, and/or, RAN equipment identification, an optional, also includes the 1st terminal equipment identification. Alternatively, if the end of the PGW 1st Multicast service according to the request message to the network-level Multicast member table have been updated, and determining the PGW 1st Multicast service data packet in the PGW RAN equipment with a transmission between a change in the way (for example by the Multicast mode into the unicast mode), or Multicast service data packet determined UPF 1st RAN equipment and terminal equipment in a transmission between a change in the way (for example by the Multicast mode into the unicast mode), is transmitted to the 2nd UPF RAN equipment configuration information, the 2nd configuration information to the content and the transmission mode can be reference step 1008 in the description. Optionally, PGW to the network-level Multicast member table has been updated, if RAN equipment service to the terminal equipment of the Multicast service members have not 1st, and the PGW and RAN equipment used for sending the 1st between the Multicast service data packet Multicast transmission channel (for example by step 9011 - step 9014 multicasting set up of S1/M1 tunnel) only corresponding to the 1st Multicast service (for example with the mark M - TEID1 corresponding Multicast transmission tunnel, used for sending the 1st Multicast service data packet), the notification of the PGW RAN equipment, removing the means for sending the 1st Multicast service data packet Multicast transmission channel; or, if the PGW and RAN equipment used for sending the 1st between the Multicast service data packet Multicast transmission channel can be used for sending the data packet of the plurality of Multicast service, and the service of the RAN equipment in the terminal equipment, does not have any members of the Multicast service, the notification of the PGW RAN equipment, removing the means for sending the 1st Multicast service data packet Multicast transmission channel, releases the resources associated with the Multicast transmission channel. The PGW notice RAN equipment, removing the means for sending the 1st Multicast service data packet Multicast transmission channel of process of the reference method 900 in step 917 in understanding the description corresponding, does not repeat. Step 1018, PGW judging its services in the network whether there are members of the 1st of the Multicast service. The PGW judging its services in the network whether there are members of the 1st Multicast service, including for example, the reading of the PGW RAN equipment request sent from the end of the Multicast service 1st 1st in the message Multicast service identifier; PGW checking for updates of the network-level Multicast member table, if one has not been associated with the 1st Multicast service effective information item, may be considered not members of the 1st of the Multicast service. An optional, PGW can also be sending inquiry information, confirming its services to the terminal equipment of whether there are members of the 1st Multicast service, in particular including such as PGW sends IGMP/MLD query message, for inquiring its services in a network, whether there is still need receiving 1st Multicast service of the terminal device, or whether it also need to receive any Multicast service of the terminal device, the query message can be directly by the PGW or sent to the SGW RAN equipment, or by the PGW RAN equipment through the MME is sent to the; RAN device receives the query message, inspection and maintenance of the cell-level Multicast member table, recognizing the 1st Multicast service or arbitrary Multicast service member information, if the cell-level Multicast member table is also provided with a 1st Multicast service or arbitrary Multicast service related effective information item, the PGW RAN equipment to send that RAN equipment request receiving 1st Multicast service or arbitrary Multicast service message; an optional, RAN equipment in inspection and maintenance of the cell-level Multicast member table before, to its service of the terminal device sends the query message, the query message for inquiring whether the terminal installation also need to receive the 1st Multicast service or arbitrary Multicast service, RAN equipment service terminal equipment (in order to 1st terminal equipment as an example) on receipt of the query message, if the terminal apparatus is 1st 1st Multicast service demand or other Multicast service demand, or 1st terminal equipment service of the terminal apparatus is 2nd 1st Multicast service needs or other Multicast service demand, then the 1st terminal device will send the indicates that the operational requirements of the report message (IGMP Join report) to the RAN equipment, RAN equipment will be according to the report message update its maintenance of the cell-level Multicast member table. In response to the PGW inquiry message, the terminal device to the RAN device sends a request for the Multicast service report message to the PGW and RAN device sends a request for the Multicast service message process, can refer to steps 1002 - step 1004 in understanding the description of the. PGW can be according to the received any RAN equipment sends the Multicast service demand that the 1st or arbitrary Multicast the operational requirements of the message, more new maintaining the network-level Multicast member table. If the PGW sending inquiry message in a section of the setting time is not received in any RAN equipment request receiving 1st the report message of the Multicast service, the PGW can be considered in the network of its services, do not have the members of the 1st of the Multicast service. Step 1019, PGW to 2nd request message sent by the network device, the 2nd request message is used for PGW request to a network device on the 1st Multicast connection of the disconnect. For example, such as PGW can adopt the IGMP/MLD Multicast management protocol or the like PIM Multicast routing protocol, to a network device for transmitting the Multicast service from the 1st (for example in the case of the report of the IGMP leave) or leave 1st Multicast service corresponding Multicast routing tree (such as PGW transmitting leaving the Multicast routing tree branches request message) of the request message. The embodiment of the invention, the network device comprises for example, the Multicast router in a data network, or query node, or multicasting server and the like. The other can be selected in a manner, for MBMS/eMBMS network architecture, in step 1019 in, MBMS GW can also be sent to the BM - SC 2nd request message, the 2nd request message for requesting the BM - SC with the network equipment of the Multicast service disconnect on 1st is connected, or can be used to BM - SC cancel request receiving 1st Multicast service data packet. Step 1019 is selective step, in step 1018 in the service of the PGW is judged to have not 1st in the network members when the Multicast service. Step 1017 to step 1019 to the PGW maintaining the network-level Multicast member table, remove the Multicast connection specific to realize the procedure. Should be understood, method 1000 and method 600 or method 700 of the difference between the application of the scene is not the same as the network architecture, method 600 or method 700 is applied to the 5 G network architecture, the method 1000 is applied to the 4 G network architecture or MBMS/eMBMS architecture. Method 1000 and method 900 of the difference between the, method 1000 in the IGMP Proxy RAN equipment has capacity, can replace the terminal equipment to the mobile core network for Multicast service management management device transmitting the Multicast service request associated with the message, method 1000 in partial steps of specific implementation procedure can reference method 900 in the corresponding steps. Therefore, in the application embodiment, PGW maintaining the network-level Multicast member table of the network equipment to maintain a Multicast connection, PGW from the network device receiving the Multicast service data packet, to its copy, and in accordance with the configuration of the QoS rules, a Multicast mode to the RAN device sends a Multicast service data packet, then the RAN equipment to unicast or Multicast mode to the terminal device sends the Multicast service data packet, so that the terminal device can obtain the Multicast service through the wireless network, saves the return link transmission resources. The function of the IGMP Proxy RAN equipment configuration, Multicast service management capacity, can replace its services of the terminal equipment to the Multicast service management function management device sends the request associated with the Multicast service message, reduces the return link transmission of the signaling. In an embodiment of the invention, if the take into account local outs of the network architecture, the gateway apparatus and with Multicast service management function management device also can be LGW, this architecture can also reference method 900 or method 1000 understands and, when the method described in the understanding of the PGW is replaced can be LGW. Figure 16 is the illustrative diagram of according to the present application management device 1100. As shown in Figure 16, the management apparatus 1100 includes: Receiving module 1110, acquisition module 1120, processing module 1130 and a transmitting module 1140. The receiving module 1110, used for receiving the 1st message, the 1st message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, request receiving or the end of the instruction of the 1st Multicast service, with the request receiving or the end of the 1st of the Multicast service corresponding to the identification of the terminal device, the terminal device serving the access network equipment of the corresponding identification. The acquisition module 1120, used for obtaining the 1st Multicast service quality of service parameters. The processing module 1130, for updating Multicast member table, wherein the Multicast member table comprises the following any one or any of a plurality of: establishing a connection with the Multicast service the corresponding identification, request receiving the pre established connection of the Multicast service terminal equipment identification, and/or, for the terminal device with the services of the access network device identification. The processing module 1130 is also used to determine the gateway device to the access network device sending the 1st of the Multicast service mode of the data packet, wherein the gateway device to the access network device sending the 1st of the Multicast service in the form of data packets, the gateway device to the Multicast mode to the access network device sending the 1st Multicast service data packet, or, the gateway device in a unicast manner to the access network device sending the 1st Multicast service data packet. The sending module 1140 for informing the gateway device to the terminal device or the access network device sending the 1st Multicast service data packet, or the management apparatus notifies the gateway device to stop by the terminal device or the access network device sending the 1st Multicast service data packet. The sending module 1140 for informing the gateway device with the network equipment to the establishment of the 1st Multicast service connection The sending module 1140 for to the gateway device sends the network-level Multicast member notification message, the network-level Multicast member notification message comprises adding or deleting of the Multicast service members with the 1st by the gateway equipment service in the terminal equipment of the corresponding identification, and/or, 1st Multicast service with the corresponding identification. The sending module 1140 for to the gateway device sending 4th message, the 4th message comprises the following any one of or any of a plurality of: 1st 1st indication information comprises configuration information, add or delete the Multicast member indicating information, add or delete the Multicast service members with the 1st in service by the gateway device corresponding to the identification of the terminal device, the terminal device serving the access network equipment of the corresponding identification, with the 1st Multicast service identification corresponding to; the 1st indication information is used to indicate the 1st Multicast service data packet of the gateway device and the access network device between the indication information of the transmit mode. The sending module 1140 to the access network device for transmitting 3rd message, the 3rd message comprises the following any one of or any of a plurality of: addition or deletion of Multicast member indicating, added or deleted with the 1st of the Multicast service members by said access network device services in the terminal equipment of the corresponding identification, and, with the 1st Multicast service identification corresponding to; the 1st the Multicast service members comprises a request receiving the 1st Multicast service of the terminal device. The sending module 1140 is used for sending the 2nd message, the 2nd message used to query the management apparatus of the services in the network, whether there is a request to receive the Multicast service apparatus of the 1st, the 2nd and the 1st message included in the Multicast service the corresponding identification, the apparatus includes a terminal apparatus and access network equipment; or, the 2nd message used to query the management apparatus of the services in the network, whether there is a request to receive any Multicast service equipment, the apparatus includes a terminal apparatus and access network equipment. The sending module 1140 is also used for sending 2nd to the access network device configuration information, the configuration information comprises the following information 2nd in any one or any of a plurality of: used for pointing out the gateway device to the access network device sending the 1st Multicast service data packet of the 1st of the indication information, for indicating the access network device to said terminal device sending the 1st Multicast service data packet of the 2nd of the indication information. Alternatively, the management apparatus 1100 can be correspondent to the method 200 in the SMF, method 300 in the UPF, method 400 in the SMF, method 500 in the UPF, method 600 in the SMF, method 700 in the UPF, method 800 in the PGW, method 900 in the PGW and method of 1000 in the PGW or MBMS GW. Optionally, the receiving module 1110, acquisition module 1120, processing module 1130 and a transmitting module 1140 is used for carrying out the application of a system for transmitting Multicast service 200 to method 1000 in the management of the device corresponding to each operation, for brevity, not repeat them here. Figure 17 is the illustrative diagram of the gateway device according to this application 1200. As shown in Figure 17, the gateway device 1200 includes: Receiving module 1210 and a transmitting module 1220. The receiving module 1210, used for receiving the network device to send the 1st Multicast service data packet. The receiving module 1210 also for receiving the management apparatus notifies the gateway device with the network equipment to the establishment of the 1st Multicast service connection message, or receiving the management apparatus notifies the gateway device is disconnected from the network equipment on the establishment of the 1st Multicast service of the Multicast connection. The sending module 1220, for to the access network device sending the 1st Multicast service data packet, wherein the access device transmits the 1st of parallelism of the Multicast service data packet, including, the gateway device to the Multicast mode to the access network device sending the 1st Multicast service data packet, or, the gateway device in a unicast manner to said access network device sending the 1st Multicast service data packet. The sending module 1220 is also used for through the 1st channel to the access network device sending the 1st Multicast service data packet, the 1st 1st channel for transmission of the data packet of the channel of the Multicast service; or, through the 1st channel to the access network device sending the 1st Multicast service data packet, the 1st channel is used for transmitting a plurality of different Multicast service data packet channel. Alternatively, the gateway device 1200 can be correspondent to the method 200 in the UPF, method 300 in the UPF, method 400 in the UPF, method 500 in the UPF, method 600 in the UPF, method 700 in the UPF, method 800 in the PGW, method 900 in the PGW and method of 1000 in the PGW or MBMS GW. Optionally, the receiving module 1110 and the sending module 1120 for the implementation of the application of a system for transmitting Multicast service 200 to method 900 in the gateway device corresponding to each operation, for brevity, not repeat them here. Figure 18 is the illustrative diagram of according to the application of the access network device 1300. As shown in Figure 18, the access network device 1200 includes: Receiving module 1310, a sending module 1320 and a processing module 1330. The receiving module 1310, for receiving from the gateway device to send the 1st Multicast service data packet; The sending module 1320, for to the terminal apparatus sending the 1st Multicast service data packet; wherein said access network device to said terminal device sending the 1st Multicast service data packet, including: the access network equipment in order to Multicast manner to the said terminal equipment sends the 1st Multicast service data packet, or, the access network device in a unicast manner to the said terminal equipment sends the 1st Multicast service data packet. The receiving module 1310 is also used for receiving from the management device of the 3rd message, the 3rd message comprises the following any one of or any of a plurality of: addition or deletion of Multicast member indicating, with the addition or deletion of terminal equipment identification corresponding to, and with the 1st Multicast service the corresponding identification; or, is received from the terminal equipment of the 5th message, the 5th message is used for the terminal equipment request receiving or the end of the 1st Multicast message service, the 5th message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, with said terminal device corresponding identification. Processing module 1330 for updating Multicast member table, the Multicast member table includes: establishing a connection with the Multicast service the corresponding identification, and/or, with the request to receive the pre established connection of the Multicast service corresponding to the identification of the terminal device. Optionally, the receiving module 1310, the sending module 1320 and a processing module 1330 is used for carrying out the application of a system for transmitting Multicast service 200 to method 1000 in the access network device corresponding to each operation, for brevity, not repeat them here. Figure 19 is the illustrative diagram of the terminal device according to this application 1400. As shown in Figure 19, the terminal apparatus 1400 includes: Acquisition module 1410, receiving module 1420, a sending module 1430 and a processing module 1440. Acquisition module 1410, used for obtaining the Multicast service session connection indication. Receiving module 1420, used for receiving the 2nd 7th message sent by the terminal device, the 7th message comprises the following in any one or any of a number of: 1st Multicast service with the corresponding identification, request receiving or indicating the end of the Multicast service 1st, 2nd terminal equipment identification. The receiving module 1420 also used for receiving the access network device to send the 1st Multicast service data packet. Sending module 1430, for according to said Multicast service session connection indicating, to the access network device to send the request information to the 1st, the 1st request information for requesting the establishment of the Multicast service session. The sending module 1430 is also used for the access network device sends to the 8th message, the 8th message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, request receiving or the end of the instruction of the 1st Multicast service, the identification of the terminal device corresponding to the 1st, the 2nd terminal equipment identification. The processing module 1440 for updating Multicast member table, wherein the Multicast member table comprises the following any one or any of a plurality of: with the 1st terminal equipment can receive the Multicast service the corresponding identification, and the 2nd terminal equipment with the corresponding identification. Alternatively, the acquisition module 1410, receiving module 1420, a sending module 1430 and a processing module 1440 for carrying out the application of a system for transmitting Multicast service 200 to method 1000 in the 1st terminal corresponding to each operation of the apparatus, for brevity, not repeat them here. The above management device, the gateway device, the access network equipment and terminal apparatus and method of the embodiment of the management device, the gateway device, access network apparatus and corresponding to the terminal device is completely, by the corresponding module to carry out the corresponding steps, and in particular can be refer to the embodiment of the method. Figure 20 is the illustrative diagram of the present invention provides a communication device 1500 of, the communication device 1500 includes: Memory 1510, for storing a program, the program comprising code; Transceiver 1520, and other equipment used for the communication; Processor 1530, for performing memory 1510 in the program code. Optionally, when the determines is executed, the processor 1530 can realize the method 200 to method 1000 of each operation, for brevity, not repeat them here. At this time, communication device 1400 can be a management device, the gateway device, the access network equipment and terminal equipment. Transceiver 1520 for processor 1530 under the drive of the implementation of specific signal receiving and transmitting. Communication device 1500 can be for the above-mentioned management device, the gateway device, the access network equipment and terminal equipment, the operation of the implementation of the processing module, the transceiver can comprises the following at least one of: interface circuit, the transmitter, and the receiver, respectively performing the sending module and the receiving module corresponding steps. The invention also provides a chip system, comprising: at least one processor, the at least one processor for executing the stored instructions, so that the management device, the gateway device, access network equipment or the terminal equipment can carry out the corresponding to the above-mentioned method of the management device, the gateway device, the access operation of the equipment or terminal equipment. The invention also provides a computer program product, the computer program product includes an instruction, when the instruction is executed, so that the management device, the gateway device, access network equipment or the terminal equipment can carry out the corresponding to the above-mentioned method of the management device, the gateway device, the access operation of the equipment or terminal equipment. Ordinary skill in the art can be aware that, in combination with the text in the disclosed embodiments described in the example of the unit and algorithm steps, which can take electronic hardware, or computer software and electronic hardware to realize the combination. These functions on whether the hardware or software to implement the, depends on the specific application and the technical scheme of the design constraints. Professional technicians can be to each specific application to use a different method to realize the described function, but realizing this should not be considered as beyond the scope of this application. The field to technical personnel can clearly understand that, for the description of convenient and simple, the above described system, device and unit specific work process, can reference the aforesaid method in the embodiment of the corresponding process, not repeat them here. In this provided by the application in several embodiment, it should be understood that, the disclosed system, device and method, can be realized by other means. For example, the device described in the above embodiment is only illustrative of, for example, the division of the unit, only is a logic functions and, when the actual implementation can be another division of, for example a plurality of units or components can be combined or can be integrated into another system, or some of the features can be neglected, or not. Another point, the display or discussed in the mutual coupling between the direct coupling or communication or can be connected via some interface, device or unit indirect coupling or communication connection, can be electrical, mechanical or other forms. The stated acting in order to separate the part description of the unit can be or can also be is not physically separated, as a unit display part can be or can also be is not a physical unit, can be located on a local, or also can be distributed to a plurality of network unit. Can be selected according to the actual needs of some or all of the unit to realize the purpose of the embodiment. In addition, in this application in the various embodiments of the functional unit can be integrated in a processing unit, each unit can also be separate physical presence, can also be two or more than two unit integrated in a unit. The functional if the software is implemented in the form of the functional unit and as an independent product sales or when in use, may be stored in a computer readable storage medium. On the basis of this understanding, the application of the technical proposal of the prior art essentially or contribute to the technical scheme of the part or the part can be embodied in the form of the software product, the computer software product stored in a storage medium, which comprises a plurality of instruction is used to make a computer equipment (can be a personal computer, server, or network equipment) implementation of the invention each of the embodiment of the method all or part of the steps. The above-mentioned storage medium includes: U disk, mobile hard disk, read-only memory (Read - Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and the like of the medium can be stored program code. In the above-mentioned examples, can be completely or partially through the software, hardware, firmware or any combination thereof to realize. When using the software realization, can be completely or partly in the form of computer program product. The computer program product comprising one or more of computer instructions. On the computer the loading and execution of said computer program instruction, generated in whole or in part in accordance with the stated in this application of the procedure or function. The computer can be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored on the computer readable storage medium, or from a computer readable storage medium to another computer-readable storage medium transmission, for example, the computer instructions can be from a web site, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave plasma) mode to another web site, the computer, server or data center to carry out the transmission. The computer readable storage media may be a computer can access any available medium or comprise one or more usable medium integrated server, data storage equipment such as a data center. The available medium may be a magnetic medium, (for example, floppy disk, hard disk, tape), optical media, or semiconductor medium (such as solid-state hard disk Solid State Disk, SSD) and the like. Of the above, only the application of the specific embodiments, but the scope of protection of this application is not limited to this, any familiar with the technical personnel in the technical field of this application within the scope of the technology revealed, can be easily thought of change or replacement, should be covered in this application within the scope of protection. Therefore, the application scope of protection should be to the right of whichever is the scope of protection requirements. The invention provides a method and apparatus for transmitting multicast service, so that the transmission of multicast service such as an internet television can be supported in a wireless access scene, and the cost of an operator is reduced. The method comprises the following steps of: the management device receives a first message, the first message comprises any one or more of the following: an identifier corresponding to the first multicast service, an instruction for requesting to receive or end the first multicast service, an identifier of a terminal device requesting to receive or endthe first multicast service, and an identifier of an access network device serving the terminal device; and the management device notifies a gateway device to send a data packet of the first multicastservice to the terminal device or the access network device according to the first message, or the management device notifies the gateway device to stop sending the data packet of the first multicastservice to the terminal device or the access network device. 1. A transmission of the Multicast service method, characterized in that includes: The management equipment receives the 1st message, the 1st message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, request receiving or the end of the instruction of the 1st Multicast service, with the request receiving or the end of the 1st of the Multicast service corresponding to the identification of the terminal device, the terminal device serving the access network equipment of the corresponding identification; The management apparatus notifies the gateway device to the terminal device or the access network device sending the 1st Multicast service data packet, or the management apparatus notifies the gateway device to stop by the terminal device or the access network device sending the 1st Multicast service data packet. 2. Method according to Claim 1, characterized in that the method also includes: The management device update Multicast member table, wherein the Multicast member table comprises the following any one or any of a plurality of: establishing a connection with the Multicast service the corresponding identification, has been established with the requesting the connection of the Multicast service corresponding to the identification of the terminal device, and, with the service request has been established for the connection of the Multicast service terminal equipment access network equipment of the corresponding identification. 3. Method according to Claim 2, characterized in that the method further comprises: said management device update Multicast member table, including: The management apparatus in the Multicast member table, increase with said terminal apparatus and the 1st Multicast service corresponding to the information item; or, The management apparatus in the Multicast member table, with said terminal apparatus and the 1st Multicast service information corresponding to the entry is placed in the state of the force; or, The management apparatus in the Multicast member table, delete with said terminal apparatus and the 1st Multicast service corresponding to the information item; or, The management apparatus in the Multicast member table, with said terminal apparatus and the 1st Multicast service information corresponding to the entry is set to the state of the invalid; or, The management apparatus in the Multicast member table, with the increase of the access network equipment and the 1st Multicast service corresponding to the information item; or, The management apparatus in the Multicast member table, with the access network equipment and the 1st Multicast service information corresponding to the entry is placed in the state of the force; or, The management apparatus in the Multicast member table, to delete the access network equipment and the 1st Multicast service corresponding to the information item; or, The management apparatus in the Multicast member table, with the access network equipment and the 1st Multicast service information corresponding to the entry is set to the state of the invalid; Wherein The is connected to the terminal equipment and the 1st Multicast service information corresponding to the entry includes the 1st Multicast service with the corresponding identification, and with said terminal device corresponding identification; The with the access network equipment and the 1st Multicast service information corresponding to the entry includes the 1st Multicast service with the corresponding identification, with the access network device and the corresponding identification. 4. To 3 in any of the method according to Claim 1, characterized in that the method also includes: The management apparatus notifies the gateway device with the network equipment to the establishment of the 1st Multicast service connection. 5. To 4 in any of the method according to Claim 1, characterized in that the method also includes: In the Multicast member table effective information items including the 1st does not exist in the Multicast service information entries, the management apparatus notifies the gateway device is disconnected from the network equipment on the establishment of the 1st Multicast service of the Multicast connection. 6. Method as in any of Claims 1 to 5, characterized in that the method also includes: The management apparatus sends the message 2nd, the 2nd message used to query the management apparatus of the services in the network, whether there is a request to receive the Multicast service apparatus of the 1st, the 2nd and the 1st message included in the Multicast service the corresponding identification, the apparatus includes a terminal apparatus and access network equipment; Or, the 2nd message used to query the management apparatus of the services in the network, whether there is a request to receive any Multicast service of the apparatus, the apparatus includes a terminal apparatus and access network equipment. 7. Method as in any of Claims 1 to 6, characterized in that with said terminal device corresponding identification comprises the following any one of or any of a plurality of: The identification of the terminal device, the terminal device sets up the connection session identifier, bearing the terminal device, the terminal device of the session or the bearing corresponding to the tunnel ID, service terminal equipment access network equipment identification, service of the terminal and identification of the cell. 8. Method as in any of Claims 1 to 7, characterized in that the method also includes: The management device to the access network device sends the 2nd configuration information, the configuration information comprises the following information 2nd in any one or any of a plurality of: used for pointing out the gateway device to the access network device sending the 1st Multicast service data packet of the 1st of the indication information, for indicating the access network device to said terminal device sending the 1st Multicast service data packet of the 2nd of the indication information; Wherein the gateway device to the access network device sending the 1st of the Multicast service in the form of data packets, the gateway device to unicast or Multicast mode to the access network device sending the 1st Multicast service data packet; said access network device to said terminal device sending the 1st of the Multicast service in the form of of the data packet, the access network equipment in order to unicast or Multicast manner to the said terminal equipment sends the 1st Multicast service data packet. 9. Method as in any of Claims 1 to 8, characterized in that the method also includes: The management device to the access network device sends the 3rd message, the 3rd message comprises the following any one of or any of a plurality of: addition or deletion of Multicast member indicating, added or deleted with the 1st of the Multicast service members by said access network device services in the terminal equipment of the corresponding identification, and, with the 1st Multicast service the corresponding identification; the 1st the Multicast service members comprises a request receiving the 1st Multicast service of the terminal device. 10. Method as in any of Claims 1 to 9, characterized in that the management function of the device and the function of the gateway device is arranged in the in the same equipment. 11. Method as in any of Claims 1 to 10, characterized in that the method also includes: The management apparatus for obtaining the 1st Multicast service quality of service parameters; The management device to the access network device transmitting the quality of service configuration described, The quality of service configuration is described to include the 1st Multicast service a service corresponding to the identification of mass flow QoS flow, and with the quality of service parameters corresponding to the QoS flow, or, The quality of service configuration is described to include the 1st Multicast service corresponding to the identification of the bearing, and with the bearing corresponding to the quality of service parameters. 12. Method as in any of Claims 1 to 11, characterized in that the method also includes: The management device to the gateway device sending 4th message, the 4th message comprises the following any one of or any of a plurality of: 1st 1st indication information comprises configuration information, add or delete the Multicast member indicating information, add or delete the Multicast service members with the 1st in service by the gateway device corresponding to the identification of the terminal device, the terminal device serving the access network equipment of the corresponding identification, with the 1st Multicast service identification corresponding to; The 1st indication information is used to indicate the 1st Multicast service data packet of the gateway device and the access network device between the indication information of the transmit mode. 13. Method as in any of Claims 9 to 12, characterized in that the method also includes: The management device to the gateway device sending the 1st Multicast service stream of configuration information, the 1st Multicast service stream of configuration information includes said 1st Multicast service related service data flow template SDF template, the SDF template includes at least one packet-filtering rules, used for the gateway device according to the packet filtering rule, the received 1st Multicast service data packet is mapped onto the Multicast service matching of the 1st transmitted on the QoS flow. 14. A transmission of the Multicast service method, characterized in that includes: The gateway apparatus receives the network device to send the 1st Multicast service data packet; The gateway device to the access network device sending the 1st Multicast service data packet; wherein the gateway device to the access network device sending the 1st Multicast service data packet, including: the gateway device to the Multicast mode to the access network device sending the 1st Multicast service data packet, or, the gateway device in a unicast manner to said access network device sending the 1st Multicast service data packet. 15. Method according to Claim 14, characterized in that the gateway device to the Multicast mode to the access network device sending the 1st Multicast service data packet, including: The gateway device through the 1st channel to the access network device sending the 1st Multicast service data packet, the 1st 1st channel for transmission of the data packet of the channel of the Multicast service; or, The gateway device through the 1st channel to the access network device sending the 1st Multicast service data packet, the 1st channel is used for transmitting a plurality of different Multicast service data packet channel. 16. Method as in Claim 14 or Claim 15, characterized in that the gateway device in a unicast manner to said access network device sending the 1st Multicast service data packet, including: The gateway device the received data packet in accordance with the 1st of the Multicast service request receiving the 1st Multicast service a number of terminal devices copy, copy obtained after passing through the 1st Multicast service in the data packet includes the 1st identification, the 1st mark used to indicate the request to receive the 1st Multicast service data packet of the terminal device; The gateway device to the multicasting manner to the access network device sending the 1st Multicast service data packet, including: The gateway device the received 1st Multicast service request of a data packet in accordance with the 1st Multicast service terminal equipment service access network equipment of the number of the copy, copy obtained after passing through the 1st Multicast service in the data packet includes the 2nd identification, the 2nd mark used to indicate the 1st Multicast service. 17. A transmission of the Multicast service method, characterized in that includes: The access network device receives from the gateway apparatus of the 1st Multicast service data packet; The access network device to the terminal device sending the 1st Multicast service data packet; Wherein said access network device to said terminal device sending the 1st Multicast service data packet, including: the access network equipment in order to Multicast manner to the said terminal equipment sends the 1st Multicast service data packet, or, the access network device in a unicast manner to the said terminal equipment sends the 1st Multicast service data packet. 18. Method according to Claim 17, characterized in that the method also includes: The access network device receives the message from the management device of the 3rd, the 3rd message comprises the following any one of or any of a plurality of: addition or deletion of Multicast member indicating, with the addition or deletion of terminal equipment identification corresponding to, and with the 1st Multicast service the corresponding identification; or, The access network device is received from the terminal equipment of the 5th message, the 5th message is used for the terminal equipment request receiving or the end of the 1st Multicast service message, the 5th in the message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, with said terminal device corresponding identification. 19. Method according to Claim 18, characterized in that said access network device update Multicast member table, the Multicast member table includes: establishing a connection with the Multicast service the corresponding identification, and/or, with the request to receive the pre established connection of the Multicast service corresponding to the identification of the terminal device; The method comprises: The access network equipment in the Multicast member table, increase with said terminal apparatus and the 1st Multicast service corresponding to the information item; or, The access network equipment in the Multicast member table, with said terminal apparatus and the 1st Multicast service information corresponding to the entry is placed in force; or, The access network equipment in the Multicast member table, delete with said terminal apparatus and the 1st Multicast service corresponding to the information item; or, The access network equipment in the Multicast member table, with said terminal apparatus and the 1st Multicast service information corresponding to the entry is placed in the invalid; Wherein The is connected to the terminal equipment and the 1st Multicast service information corresponding to the entry includes: 1st Multicast service with the corresponding identification, and with said terminal device corresponding identification. 20. Method as in any of Claims 17 to 19, characterized in that the method also includes, The access network device to the management device sends a 6th message, the 6th message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, request receiving or the end of the instruction of the 1st Multicast service, request receiving or the closure of the 1st of the Multicast service identification of the terminal device, the access network device identification. 21. Method as in any of Claims 17 to 20, characterized in that with said terminal device corresponding identification comprises the following information in any or any of a plurality of: The identification of the terminal device, the terminal device is connected to the establishment of the session identifier, bearing the weight of the terminal device, the terminal device of the session or bearing the corresponding tunnel identifier. 22. Method as in any of Claims 17 to 21, characterized in that said access network device to said terminal device sending the 1st Multicast service of Multicast service data packet, including: In the access network device according to any one of the following or any of a number of, determining the access network equipment in order to Multicast or unicast manner to the said terminal equipment sends the 1st Multicast service data packet: request receiving the 1st Multicast service a number of terminal devices, receiving a request for the 1st Multicast service of the terminal device to the access network device the link quality of the, the management device to send the used to indicate the access network device to said terminal device sending the 1st Multicast service data packet of the 2nd of the indication information. 23. Method as in any of Claims 17 to 22, characterized in that said access network device in a unicast manner to the said terminal equipment sends the 1st Multicast service data packet, including: The access network device the received data packet in accordance with the 1st of the Multicast service request receiving the 1st Multicast service a number of terminal devices copy; the access network device in copy obtained after the Multicast service in the data packet of the 1st 1st identification after adding, to the request receiving the 1st of the terminal device sends the Multicast service, the 1st mark used to indicate the request to receive the 1st Multicast service of the terminal device. 24. A transmission of the Multicast service method, characterized in that includes: 1st terminal equipment according to the Multicast service session connection indicating, to the access network device to send the request information to the 1st, the 1st request information for requesting the establishment of the Multicast service session. 25. Method according to Claim 24, characterized in that the method also includes: the terminal device receives the 1st 2nd 7th message sent by the terminal device, the 7th message comprises the following in any one or any of a number of: 1st Multicast service with the corresponding identification, request receiving or indicating the end of the Multicast service 1st, 2nd terminal equipment identification; The 1st terminal device obtains the Multicast service session connection instructions, including: The 7th 1st terminal device the message as a Multicast service session connection indication, the 7th message comprises a request receiving 1st Multicast service instructions; or The terminal device according to 1st application layer service request obtaining Multicast service session connection instructions; or The 1st terminal equipment according to the pre-information obtaining Multicast service session connection indication. 26. Method as in Claim 24 or Claim 25, characterized in that the method also includes: The 1st terminal equipment to the access network device sends the 8th message, the 8th message comprises the following any one of or any of a plurality of: 1st Multicast service with the corresponding identification, request receiving or the end of the instruction of the 1st Multicast service, the identification of the terminal device corresponding to the 1st, the 2nd terminal equipment identification. 27. Method as in any of Claims 24 to 26, characterized in that the method also includes: The 1st terminal device update Multicast member table, Wherein the Multicast member table comprises the following any one or any of a plurality of: with the 1st terminal equipment can receive the Multicast service the corresponding identification, and the 2nd terminal equipment with the corresponding identification. 28. Method according to Claim 27, characterized in that the 1st terminal device update Multicast member table, including: The 1st terminal equipment in the Multicast member table, added with the 2nd terminal equipment and 1st Multicast service corresponding to the information item; or, The 1st terminal equipment in the Multicast member table, with the 2nd terminal equipment and 1st Multicast service information corresponding to the entry is placed in force; or, The 1st terminal equipment in the Multicast member table, to delete the 2nd terminal equipment and 1st Multicast service corresponding to the information item; or, The 1st terminal equipment in the Multicast member table, with the 2nd terminal equipment and 1st Multicast service information corresponding to the entry is placed in failure; Wherein The terminal equipment with the 2nd and the 1st Multicast service information corresponding to the entry includes the Multicast service identification corresponding to 1st, and 2nd terminal equipment with the corresponding identification; the 2nd terminal equipment with the corresponding identification, comprising the following in any one or any of a number of: the 2nd the identification of the terminal device, the terminal device to the 2nd 1st between the terminal equipment interface/port identification, the 2nd terminal device to the 1st between the terminal equipment bearing or logical channel identification. 29. A management device, characterized in that includes: The at least one processor, a memory and a transceiver, the memory for storing instructions, the transceiver is used for the management apparatus and other equipment communication, the stored instruction is the at least one processor implementation of directly or indirectly, so that the management apparatus as in claim 1 - 13 in any one of the operation of the method. 30. A kind of gateway device, characterized in that includes: at least one processor, a memory and a transceiver, the memory for storing instructions, the transceiver is used for the gateway device and other equipment communication, the stored instruction is the at least one processor implementation of directly or indirectly, so that the gateway apparatus as in claim 14 - 16 in any one of the operation of the method. 31. An access network device, characterized in that includes: at least one processor, a memory and a transceiver, the memory for storing instructions, the transceiver is used for the access network equipment and other equipment communication, the stored instruction is the at least one processor implementation of directly or indirectly, so that the access network device to claim 17 - 23 in any one of the operation of the method. 32. A terminal device, the terminal device is a 1st terminal device, characterized in that includes: at least one processor, a memory and a transceiver, the memory for storing instructions, the transceiver is used for the terminal apparatus and other equipment communication, the stored instruction is the at least one processor of the implementation of the directly or indirectly, so that the terminal device as in claim 24 - 28 in any one of the operation of the method.