Broadband satellite communication system and method based on satellite-borne IP switching

1. A satellite-based IP exchange broadband satellite communication system, which is characterized by comprising: a broadband communication satellite, network management control center system, satellite terminal addressed and clearance; the broadband communication satellite has the IP exchange function of the star, the star on the exchange of IP forwarding in order to realize between satellite terminal, the satellite terminals of the communication between the clearance; the system network management control center and the letter with clearance and satellite terminal, satellite-based broadband satellite communication system to exchange IP routing information maintenance, label information maintenance and will exchange label information transmitted to the satellite terminal clearance of the; clearance satellite terminal and addressed according to the system network management control center allocation switching the access tag information of the business data packet to packet processing in order to realize the service sending, receiving the data packet through the tag information to the exchange of the unpacking processing to realize the reception of the service;

Broadband communication satellite as broadband satellite communication the core of the system switching node, addressed in the clearance and satellite terminal from the access service of the baseband signal processing of the data, according to the received exchange data packets in the queues the data packet for the label information, scheduling, the final forwarding to the corresponding received signal station or satellite terminal;

System network management control center and the letter with clearance and satellite terminal, broadband used for maintaining routing information table of the satellite communication system, according to the routing information table mapping service forwarding label information table for the exchange, then the exchange of signalling through the label distribution label configurations clearance to the satellite terminal and the letter and a configuration update;

Letter for receiving satellite terminal clearance through the broadband communication satellite sending the data packet, removing data packet packet exchange label is sent to the user terminal; and the user terminal according to the data packets of the different service forwarding add exchange label, by a transmission queue, the scheduling, eventually through the broadband communication satellite is sent to the satellite terminal;

Satellite terminal is used for clearance meets the receiving or other satellite terminal through the broadband communication satellite sending the data packet, removing data packet packet exchange label is sent to the user terminal; and the user terminal according to the data packets of the different service forwarding add exchange label, by a transmission queue, the scheduling, the final broadband communication satellite is sent to the addressed terminal or other satellites clearance.

2. A satellite-based exchange of IP according to Claim 1 broadband satellite communication system, characterized in that the satellite IP exchange function while broadband communication satellite has multi-beam support capability, inquire about the satellite IP exchange number count corresponding to the beam.

3. A satellite-based exchange of IP according to Claim 1 broadband satellite communication system, characterized in that said IP exchange function of the star broadband communication satellite has the input business data base band data processing and the data cache, the capacity of the queue scheduling priority.

4. A satellite-based exchange of IP according to Claim 1 broadband satellite communication system, characterized in that the system network management control center has clearance to the satellite terminal and addressed to the ability of carrying out authentication, in order to realize the satellite terminal and addressed to registered with an access clearance.

5. A, on the basis of claim 1 of the star in broadband satellite communication system to exchange IP communication method, which is characterized by comprising the following steps:

(1) through the clearance of the satellite terminal and addressed IP exchange function with the star broadband communication satellite to the system network management control center draw authentication, after the authentication permission, registered to access the transmission channel and the establishment of star-to;

(2) system network management control center, the clearance and satellite terminal addressed IP signaling routing information between routing information of the interactive, network management by the system control center maintaining a system-wide routing information table, transmitting to the system all satellite terminal and addressed in the clearance, and is updated in real time;

(3) system network management control center according to the routing information table mapping service forwarding information table for the label, then through the label distribution signaling the corresponding exchange label configuration to the satellite terminal and the letter and clearance configuration update;

(4) the user terminal needs to be transmitted to data transmission of the clearance or satellite terminal addressed;

(5) the clearance or satellite terminal addressed IP exchange function belt space broadband communication satellite to the system network management control center destination address parsing the request to, after the response, obtain the corresponding service forwarding sectioned;

(6) station or satellite terminal addressed to the received service-forwarding of the data packet in accordance with the classification of traffic, the step (3) with different business forwarding on exchange label is added to the data packet, and transmits the IP exchange function in belt star broadband communication satellite;

(7) switching function with satellite IP broadband communication satellite receiving letter of the clearance or satellite terminal sends the data packet with a switching label, and according to switching label the data packet queuing, scheduling, eventually forwarded to the purpose of clearance or satellite terminal addressed.

6. A satellite-based exchange IP broadband satellite communication system of the communication method according to Claim 5, characterized in that said step (2) of route information interaction specific steps are as follows:

(1) system in satellite terminal and addressed to all of the running clearance of the border gateway routing protocol, obtaining connected with the routing table information of the user terminal;

(2) all satellite terminal and addressed through the clearance of the IP exchange function belt space broadband communication satellite the step (1) of the routing table in the information sent to the system network management control center;

(3) system network management control center clearance according to the satellite terminal and addressed to the sending of the routing table information to set up a system-wide routing information table, and is updated in real time;

(4) system network management control center system-wide routing information table is sent to the system all satellite terminal and addressed in the clearance, and is updated in real time.

7. A satellite-based exchange IP broadband satellite communication system of the communication method according to Claim 5, characterized in that said step (3) for the label routing information table information mapping the specific steps are as follows:

(1) service message according to the routing information table of the next hop destination address and the quality of service level effect class determining the forwarding service message;

(2) according to the business message forwarding effect class , table entry of the routing information table to-one mapping table entry information for the label of the table.