ATM-Vermittlungseinheit

Data transport system

CONNECTION ESTABLISHING METHOD IN BROADCASTING PACKET COMMUNICATION AND PACKET COMMUNICATION SYSTEM HAVING FUNCTION OF AUTOMATICALLY SHUNTING A BROADCASTING PACKET

In each of packet switching nodes making up a packet switching netowrk, when it is desired to transfer a data packet between terminal and line interfaces, an identifier called an access channel number is attached to the data packet; whereas, when it is desired to transfer a data packet through multiplexing lines between line interfaces of adjacent packet switching nodes, an identifier called a transport channel number is attached to the data packet to specify the respective connections. In particular, when a broadcasting packet communication is specified wherein a common packet is to be transferred from a packet terminal to a plurality of destination packet terminals at the same time, the access channel number attached to the broadcasting packet to be transferred between the terminal and line interfaces is uniquely defined in the associated packet switching node; while the transport channel number attached to the broadcasting packet to be transferred through the multiplexing line between ...

PROCESS AND DEVICE OF COMMUNICATION Of INFORMATION

DYNAMIC TRAFFIC CONDITIONING

Multi-media networks will require that a data flow be given certain quality-of-service (QOS) for a network connection but pre-negotiation of this sort is foreign to the current data networking model. The real time traffic flow in the data network requires distinct limits on the tolerance to delay, and the variations in that delay. Interactive voice and video demand that the total delay does not exceed the threshold beyond which human interaction is unacceptably impaired. The present invention allows the network to discover the nature of the service for each traffic flow, classifies it dynamically, and exercises traffic conditioning by means of such techniques as admission control and scheduling when delivering the traffic downstream to support the service appropriately.

System and method for allocating a shared resource among competing devices

Apparatus and method for establishing "virtual connections" through a packet switched data communications network, the network including a plurality of end systems and switches connected by links. Each end system has a unique physical layer address and each switch has a connection database of valid connections between different ports on the switch and a switching mechanism for establishing temporary connections. Each switch is registered with a connection server such that, prior to transmission of a connectionsless datagram from a first end system to a second end system, a path of valid remains as a connectionless datagram. In other aspects, an improved method is provided for allocating bandwidth among competing devices requesting access to a bandwidth limited shared resource (e.g., the previously defined switch), and to a search method for making a best path determination through the network based on a number of constraints.

Dynamic traffic conditioning

Multi-media networks will require that a data flow be given certain quality-of-service (QOS) for a network connection but pre-negotiation of this sort is foreign to the current data networking model. The real time traffic flow in the data network requires distinct limits on the tolerance to delay, and the variations in that delay. Interactive voice and video demand that the total delay does not exceed the threshold beyond which human interaction is unacceptably impaired. The present invention allows the network to discover the nature of the service for each traffic flow, classifies it dynamically, and exercises traffic conditioning by means of such techniques as admission control and scheduling when delivering the traffic downstream to support the service appropriately.

ATM MULTIPLEXING CONTROL SYSTEM

PURPOSE: To maintain desired service quality and to dynamically correct the inequality of the loss probability between priority classes by the use of regarding an ATM multiplexing control system performing a UPC and a priority control. CONSTITUTION: In an ATM multiplexing control system which is provided with a multiplexing processing part 1 having a buffer memory 2 and a control processing part 3, corresponds to a priority class and performs the multiplexing processing of a cell by a UPC, the distribution of the number of arrival and the distribution of arrival ratio to be an upper bound and a lower bound for each priority class on a transmission line at the time of multiplexing are determined by using the declaration parameter by the peak rate and the average rate at the time of receiving a call, the service quality for the connection request of the call is calculated based on these distribution of the number of arrival and the distribution of arrival ratio, and the propriety of the acceptance ...

Mehrdienste-MAC-Protokoll für drahtloses ATM-System

Distribution network

Evaluating quality of service in an ATM multiplexing apparatus

A method and apparatus for evaluation of the Quality of Service (QOS) in an ATM multiplexing apparatus in which a probability transition matrix St is formulated that expresses a multiplexing process which can include nested threshold priority control or classified priority control. A state equation using the matrix St is solved using upper and lower bounds of the probability distribution of a call arrival count at in an average time series, to calculate a probability distribution of a call length in a buffer. From this calculated call length probability distribution is evaluated the QOS on a priority class basis. Based on the QOS evaluation, optimisation of call admission control and priority control is accomplished. ...

PROCEDURE FOR THE TRANSMISSION OF MULTIMEDIADATENSTRÖMEN

GATEWAY SELECTION

BROADBAND ISDN PACKET SWITCHING ARRANGEMENTS.

NETWORK WITH SAFE, FAST PACKET SWITCHING AND GUARANTEED SERVICEQUALITÄT

Network having secure fast packet switching and guaranteed quality of service

BROADBAND ISDN PACKET SWITCHING ARRANGEMENTS

A broadband packet switch arrangement comprising a broadband packet unit connected to a plurality of customer lines and a video switch for selectively connecting packetized video signals from a plurality of video sources to the customer lines. The broadband packet switch unit selectively connects customer lines and transmits received control packets received from the customer lines to a control unit which responds to video request packets by controlling the video switch to connect selected video packets to the customer lines. Each customer line includes a selector circuit which receives video packets and inter-customer broadband ISDN packets and merges them onto the customer line. After the control unit has granted permission to connect a video source to a customer line, video source change requests for the line are sent directly to the video switch which responds thereto by connecting a requested video source to the customer line.

PROCESS OF MULTI-MEDIA TRANSPORT OF FLOW

L'invention concerne un procédé et un système de transport vers un même terminal client (2) d'au moins un premier flux avec une première qualité de service et d'au moins un deuxième flux avec une deuxième qualité de service, ledit premier flux étant transmis au terminal client (2) à travers un réseau non connecté, et ledit deuxième flux étant transmis audit terminal client (2) par un serveur de contenu (6) à travers un réseau connecté après réservation de ressource réseau avec qualité de service par échange de messages par l'intermédiaire du réseau non connecté. Le procédé Selon l'invention comporte en outre les étapes suivantes : - établir une liaison haut débit entre le terminal client (2) et le serveur de contenu (6); - transmettre au terminal client (2) à travers ladite liaison haut débit le deuxième flux avec la qualité de service réservée.

NETWORK HAVING SECURE FAST PACKET SWITCHING AND GUARANTEED QUALITY OF SERVICE

Apparatus and method for establishing "virtual connections" through a switched data communications network which provides higher speed, lower cost, integrated services, and manageability. Once the virtual connection is established, the switches can move connectionless data packets along the established path in a straight-forward manner without transformation of the data packets. The complexities associated with routing data are pushed out of the data transfer path and are instead handled at connection establishment time. This allows the switches to be simpler and therefore faster. Also, the switching decision is substantially protocol independent and transparent to the end systems. It also yields important benefits in terms of manageability because capabilities which were too costly to perform on a packet-by-packet basis can readily be performed at connection establishment time. Thus, a new level of manageability can be achieved which was not practical with datagram oriented technology.

Transformation method for network conference connections

A transformation method for network conference connections where the network operations are determined based on stored information defining the original connection and stored information defining the target connection thus affording the opportunity to advantageously reuse existing paths. The paths to be deleted and the paths to be added to effect the transformation are determined such that no path is both deleted from and added to any switch. The connection information may be stored either in a central control entity or an intra-switch path information in the individual switches of the network. In the latter case, the individual switches determine their own intra-switch path additions and deletions in a distributed fashion.

CONNECTION ESTABLISHING METHOD IN BROADCASTING PACKET COMMUNICATION AND PACKET COMMUNICATION SYSTEM HAVING FUNCTION OF AUTOMATICALLY SHUNTING A BROADCASTING PACKET

CONTROL ARCHITECTURE FOR ATM NETWORKS

A control method and architecture is described for an ATM network carrying connections data traffic. The method is capable of integrating connectionoriented as well as connectionless traffic. The method takes advantage of the quasi-deterministic nature of the traffic emanating from a source that is being shaped by the leaky bucket shaping algorithm. Alternative methods are provided if such a shaping algorithm is not provided by the CPE which methods still guar-antee performance that equals or exceeds shared media networks such as FDDI. Hardware and software embodiments of the methods are disclosed. The invention is particularly applicable to LANs and hubs.

SWITCHING NODE IN LABEL MULTIPLEXING TYPE SWITCHING NETWORK

A switching node in a label multiplexing type switching network includes a switch for selectively coupling input logical communications paths and output logical communications paths with each other, m permanent logical communications paths being included in the input logical communications paths where m is an integer larger than or equal to 1, n permanent logical communications paths being included in the output logical communications paths where n is an integer larger than or equal to 1. The switch node includes a call control unit for receiving connection-oriented type information through any of the input logical communications paths and for controlling the switch so that the connection-oriented type information are selectively transferred to the output logical communications paths via the switch on the basis of routing address information related to the connection-oriented type information. The switch node comprises a routing unit for receiving connectionless type information through ...

Method for multimedia flow transport

A method and system for transferring to a same client terminal at least a first flow with a first service quality and at least a second flow with a second service quality. The first flow is transmitted to the client terminal through an unconnected network, and the second flow is transmitted to the client terminal by a content server through a connected network after network resource booking with service quality by exchanging messages via the unconnected network. The method establishes a high throughput link between the client terminal and the content server, and transmits the second flow with the booked service quality to the client terminal through the high throughput link.

Switching node in a network with label multiplexed information

Method and apparatus for evaluating and controlling an ATM multiplexing apparatus

SYSTEM, PARTICIPANT MECHANISM, CENTER AND PROCEDURE F�R VIDEO ON AND SERVICE

PROCESS OF MULTI-MEDIA TRANSPORT OF FLOW

NETWORK HAVING SECURE FAST PACKET SWITCHING AND GUARANTEED QUALITY OF SERVICE

Method and apparatus for evaluating and controlling an ATM multiplexing apparatus

Network having secure fast packet switching and guaranteed quality of service

Network having secure fast packet switching and guaranteed quality of service

CELL QUEUING IN ATM SWITCHES

An ATM switch has a separate queue of cells for each input virtual channel or input virtual path and transmits each frame of cells received on at least one input virtual channel or input virtual path in the same order in which the cells of the frame were received, with no intervening cells transmitted on the frame's output port or subport.

Communication network and computer network server and interface modules used therein

A communication network (VCN) offering an ETHERNET service to a plurality of local terminals (ELT1, ELTN, TLT1, TLTN1-8), typically computers, is proposed. Flexibility and cost are enhanced with respect to existing ETHERNET networks by emulating an ETHERNET network towards the local terminals while pooling complex functions in a computer network server (LANS) connected to the backbone ATM network (BB). This is achieved by coupling the local terminals, preferably separately, to standard ETHERNET links (ELN, TL1, TLN1-8) and by terminating these links in interface modules (EIM1, EIMN, TIM1, TIMN) converting the ETHERNET frames from the local terminals in ATM packets destined for the central server which stores these packets in an input buffer (IB1-X) and performs the above complex functions, particularly also the transmission of these packets to appropriate ones of the interface modules. Buffer overflow is avoided by transmitting backpressure signals (BP1-X) to the interface modules so as ...

System and method for providing SVC service through an ATM network for frame relay DTEs with a terminal adapter

The system and method of the present invention provide a seamless approach for providing ATM connectivity for a Frame Relay DTE using an intelligent Terminal Adapter (TA). Using the system and method of the present invention, an enhanced Frame Relay protocol runs between the DTE and the ATM TA, the Frame Relay DTE is provided with not only the connectivity to the ATM network but also the full advantages of ATM transport mechanism and, in particular, the connectivity through the ATM network using the SVC connection mechanism. Using the system and method of the present invention, a FR DTE may issue commands to the terminal adapter to set of calls, or connections, with other DTEs (FR or ATM). The terminal adapter then communicates with the ATM network and the destination DTE using the ANSI Q.2931 call establishment procedure (using commands such as Call-- Set-up, Call-- Accept, and Call-- Disconnect) to establish an SVC connection between the communicating DTEs. In addition, the FR DTE sends ...

Messaging system with distributed filtering modules which register interests, remove any messages that do not match the registered interest, and forward any matched messages for delivery

In a message delivery system, messages are carried over a network in packets. Server hosts support applications for originating and receiving messages and network interfaces. Switches interconnect the server hosts and form the packet network. Some of the switches are linked to the local server hosts. Distributed filtering/matching modules associated with the local server hosts register interests for applications on the associated local server hosts, inspect packets received over the network or from a local server host to match messages with registered interests and remove any unmatched packets from the packets. The matched messages are forwarded to the local server host for delivery to the applications. This system offers the ability to use special purpose hardware for the filtering/matching function without requiring connections to a common message broker.

CELL SELECTION CIRCUIT

PURPOSE: To provide a cell selection circuit which can allocate the same processing circuit to the cells that are related with each other and should be processed by the same processing circuit with small initialization value. CONSTITUTION: The identifier of a cell is converted into the group that includes the cell and the type of the processing that should be applied to the group based on a conversion table 13. The identifier of a processing circuit 19 that should process the cell is registered on a selector output reference table 17 together with a fact whether the identifier is valid or not. When the identifier is valid, a selector circuit 18 is switched to make the circuit 19 process the cell. When the identifier is invalid, the circuit 18 selects a due processing circuit in response to the processing type and registers the selection result on the table 17 to turn the identifier into the valid one. Thus it is possible to process the cells of the same group by the same processing circuit ...

Bandbreitenzuordnung, Übertragungsplanung und Vermeidung von Blockierungen in Breitband Asynchroner-Transfer-Modus Netzwerken

Multiservices medium access control protocol for wireless ATM system

COMMUNICATIONS NETWORK

A communication system includes a packet-switched network and a circuit- switched network. Gateways on the circuit-switched network adapt packet traffic for transmission on the circuit-switched network. The end-point of the switched virtual circuit is chosen by transmitting polling messages from the gateways to the destination address of the packet and selecting a gateway depending on the delay in the response to the respective polling message.

UPC-BASED TRAFFIC CONTROL FRAMEWORK FOR ATM NETWORKS

An asynchronous transfer mode (ATM) traffic control framework is based on an integrated usage parameter control (UPC) approach, which approach provides a unified and scalable solution to the issue of quality-of-services (QOS) levels over a range of anticipated services in ATM based networks. The approach is consistent with emerging ATM Forum and CCITT standards. Additionally, a UPC-based call and burst admission control providing the desired QOS over periods of network overload by call/burst admission control and traffic shaping of source stream preferably uses a dual leaky bucket.

SWITCHING NODE IN LABEL MULTIPLEXING TYPE SWITCHING NETWORK

Connection establishing method in broadcasting packet communication and packet communication system having function of automatically shunting a broadcasting packet

In each of packet switching nodes making up a packet switching network, when it is desired to transfer a data packet between terminal and line interfaces, an identifier called an access channel number is attached to the data packet; whereas, when it is desired to transfer a data packet through multiplexing lines between line interfaces of adjacent packet switching nodes, an identifier called a transport channel number is attached to the data packet to specify the respective connections. In particular, when a broadcasting packet communication is specified wherein a common packet is to be transferred from a packet terminal to a plurality of destination packet terminals at the same time, the access channel number attached to the broadcasting packet to be transferred between the terminal and line interfaces is uniquely defined in the associated packet switching node; while the transport channel number attached to the broadcasting packet to be transferred through the multiplexing line between ...

DATA TRANSPORT SYSTEM

Apparatus for an asymmetric data connection comprising a head end router (2) couplable to an ATM PVC, a PSTN modem coupled to the head end router, a plurality of downstream routers each couplable to the ATM PVC via respective ATM interfaces, a plurality of downstream PSTN modems each coupled to a respective downstream router via a respective serial interface, each ATM interface of each respective downstream router being allocated, in use, a respective IP address in a single subnet, and each serial interface of each respective downstream router being allocated in use, a respective IP address in a single subnet. A method of establishing an asymmetric data connection is also described.

Data distribution systems

Multiservices medium access control protocol for wireless ATM system

Network having secure fast packet switching and guaranteed quality of service

COMMUNICATIONS NETWORK

A communication system includes a packet-switched network and a circuit- switched network. Gateways on the circuit-switched network adapt packet traffic for transmission on the circuit-switched network. The end-point of the switched virtual circuit is chosen by transmitting polling messages from the gateways to the destination address of the packet and selecting a gateway depending on the delay in the response to the respective polling message.

METHOD FOR MULTIMEDIA FLOW TRANSPORT

The invention concerns a method and a system for transporting to a common client terminal (2) at least a first flow with a first quality of service and at least a second flow with a second quality of service, the first flow being transmitted to the client terminal (2) through a connectionless network, and said second flow being transmitted to said client terminal (2) through a content server (6) over a connected network after booking the network resource with quality of service by message exchange via the unconnected network. The inventive method further comprises the following steps: setting up a high-speed link between the client terminal (2) and the content server (6); transmitting to the client terminal (2) through said high-speed link the second stream with the booked quality of service. © KIPO & WIPO 2007 ...

DYNAMIC TRAFFIC CONDITIONING

Multi-media networks will require that a data flow be given certain quality-of-service (QOS) for a network connection but pre-negotiation of this sort is foreign to the current data networking model. The real time traffic flow in the data network requires distinct limits on the tolerance to delay, and the variations in that delay. Interactive voice and video demand that the total delay does not exceed the threshold beyond which human interaction is unacceptably impaired. The present invention allows the network to discover the nature of the service for each traffic flow, classifies it dynamically, and exercises traffic conditioning by means of such techniques as admission control and scheduling when delivering the traffic downstream to support the service appropriately.

Network having secure fast packet switching and guaranteed quality of service

Apparatus and method for establishing "virtual connections" through a packet switched data communications network, the network including a plurality of end systems and switches connected by links. Each end system has a unique physical layer address and each switch has a connection database of valid connections between different ports on the switch and a switching mechanism for establishing temporary connections. Each switch is registered with a connection server such that, prior to transmission of a connectionless datagram from a first end system to a second end system, a path of valid connections through one or more switches from the first end system to the second end system is determined by configuring the connection table of each switch on the path with a connection identifier identified by the physical layer addresses of the first and second end systems, and wherein the data packet remains as a connectionless datagram. In other aspects, an improved method is providing for allocating ...

Cell queuing in ATM switches

In a network switch, data received on an input connection can be transmitted on one or more output connections. When the switch receives a command to remove an output connection, the switch queues a marker cell in a queue cells to be transmitted on the output connection. The switch removes the connection when the switch reaches the marker cell as the switch traverses the queue to transmit the cells. A separate queue is provided for each input connection. For each input connection, the switch maintains a linked list of data structures each of which identifies an output connection which is to transmit data received on the input connection but for which the corresponding queue does not have data ready to be transmitted. When the queue gets data ready to be transmitted on all the output connections in the linked list, these output connections are moved to another linked list maintained for output connections for which there is a queue having data ready to be transmitted. The switch mutliplexes ...

VERFAHREN ZUR ÜBERTRAGUNG VON MULTIMEDIA-DATENSTRÖMEN

UPC-Based Traffic Control Framework for ATM Networks

COMMUNICATIONS NETWORK

A communication system includes a packet-switched network and a circuit-switched network. Gateways on the circuit-switched network adapt packet traffic for transmission on the circuit-switched network. The end-point of the switched virtual circuit is chosen by transmitting polling messages from the gateways to the destination address of the packet and selecting a gateway depending on the delay in the response to the respective polling message.

Asynchronous transfer mode switching system

An ATM switching system 1 is provided with an ATM switch 11, a reserved connection memory 12 for storing reserved connection information, a call history memory 13 for maintaining call histories of requests for connection from subscriber's terminal units 2 _-1 to 2 _-n, and a call-signal processing section 15. The call-signal processing section 15 generates a request for connection with respect to a trunk ATM switching network 3 by the use of the call histories in the call history memory 13 in the case where no call was issued from the subscriber's terminal units, and stores response results thereof in the reserved connection memory 16. Thereafter, when there was a call from the subscriber's terminal units 2 _-1 to 2 _-n, and contents of the request for connection thereof are the same as the reserved connection information, which has been stored in the reserved connection memory 16, processing for connection is executed by the use of the reserved connection ...

ATM VERTEILNETZ

Communications network

DATA TRANSPORT SYSTEM

Apparatus for an asymmetric data connection comprising a head end router (2) couplable to an ATM PVC, a PSTN modem coupled to the head end router, a plurality of downstream routers each couplable to the ATM PVC via respective ATM interfaces, a plurality of downstream PSTN modems each coupled to a respective downstream router via a respective serial interface, each ATM interface of each respective downstream router being allocated, in use, a respective IP address in a single subnet, and each serial interface of each respective downstream router being allocated in use, a respective IP address in a single subnet. A method of establishing an asymmetric data connection is also described.

BROADBAND ISDN PACKET SWITCHING ARRANGEMENTS

ATM SWITCHING UNIT

A transmission line control processor performs various processes in response to requests of a call processor for capture, allotment, and release of a subscriber line or an inter-station line. Additionally, in response to requests of the call processor for a reservation, connection, and disconnection of a path, the transmission line control processor instructs an ATM switch to connect or disconnect the path. These processes can be performed using with the existing functions of ordinary call processors, and such complicated processes as the management of bands at ATM switches are executed exclusively by a transmission line control processor.

Bandwidth Allocation, Transmission Scheduling, and Congestion Avoidance in Broadband ATM Networks

PROCESS AND DEVICE Of EMISSION OF DATA, PROCESS AND DEVICE OF RECEPTIONDE GIVEN

Switching node in label multiplexing type switching network

A switching node in a label multiplexing type switching network includes a switch for selectively coupling input logical communications paths and output logical communications paths with each other, m permanent logical communications paths being included in the input logical communications paths where m is an integer larger than or equal to 1, n permanent logical communications paths being included in the output logical communications paths where n is an integer larger than or equal to 1. The switch node includes a call control unit for receiving connection-oriented type information through any of the input logical communications paths and for controlling the switch so that the connection-oriented type information are selectively transferred to the output logical communications paths via the switch on the basis of routing address information related to the connection-oriented type information. The switch node comprises a routing unit for receiving connectionless type information through ...

NETZWERK MIT SICHERER, SCHNELLER PAKETVERMITTLUNG UND GARANTIERTER SERVICEQUALITÄT

Video-on-demand service using ATM cells

BANDWIDTH ALLOCATION, TRANSMISSION SCHEDULING, AND CONGESTION AVOIDANCE IN BROADBAND ATM NETWORKS

A wide variety of call traffic is effectively integrated in a single broadband communications network. Calls having widely differing bandwidth requirements and sensitivities to delay are handled by the network with efficien t, effective, and fair bandwidth allocation and transmission scheduling. This is accomplished by classifying each call in accordance with certain signal characte ristics, such as required bandwidth and sensitivity to delay. Each call class is directed to a separate queuing circuit. Some calls in certain classes, such as those associate d with high-bandwidth constant bit rate services, are each directed to their own indivi dual queuing circuits. Other calls within a class are statistically multiplexed into a single queuing circuit for that class. A multiplexing circuit operates in accordance wi th a dynamic time slice scheme which involves defining a service cycle time period du ring which the multiplexer withdraws a predetermined number of information packets fr om each ...

System for data communication

Le procédé de communication entre des dispositifs de communication d'un réseau à commutation de paquets comporte une opération de détermination de mode de transmission (1302) connecté ou non, pour chaque information à transmettre. Selon l'invention, pour chaque information à transmettre en mode connecté ce procédé comporte : . une opération de réservation de chemin (1304 à 1308) sur ledit réseau, puis . une opération de transmission de ladite information (314), en mode connecté, sur le chemin réservé au cours de l'opération de réservation. En outre, pour chaque information à transmettre en mode non connecté, ce procédé comporte : . une opération d'estimation de disponibilité de chemin sur ledit réseau, puis, lorsqu'un chemin est estimé disponible pour la transmission de ladite information, . une opération de transmission de ladite information, sur ledit chemin, en mode non connecté.

Data transmission and reception procedure, used during a network communication session between a source node and a destination node

Ce procédé s'applique à la transmission d'information au cours d'une session de communication, sur un réseau comportant au moins un commutateur, sur au moins un chemin entre un noeud dit " source " et un noeud dit " destinataire ". Le réseau est adapté à transmettre des données selon au moins un mode connecté et au moins un mode non connecté. La session comporte la transmission d'au moins un paquet comportant d'une part des données " utilisateurs " et, d'autre part, des données additionnelles définissant notamment le chemin sur ledit réseau que vont suivre lesdites données utilisateur. A chaque réception d'un paquet, le noeud destinataire effectue : - une opération de lecture desdites données additionnelles (601) et - une opération de détermination du mode de transmission, -602) connecté, ou non, en prenant en compte au moins une partie desdites données additionnelles.

Data distribution systems in vehicles

Network interface

SWITCHING NODE IN LABEL MULTIPLEXING TYPE SWITCHING NETWORK

Data distribution systems in vehicles

An in flight entertainment system (2) for an aircraft comprises an asynchronous transfer mode network which encodes, carries, switches, and delivers entertainment services as digital data streams. Services provided by the system are video, audio, announcements, data provision, systems controls, telephony and games. The network comprises copper and optical fibre (70, 72) links.

DISTRIBUTION NETWORK

In a distribution network system delivering services to customers, convergence of Internet and asynchronous transfer mode (ATM) protocols provides common distribution of data and real time communications services in the network. The connectionless packet traffic together with connection oriented traffic is transported over an asynchronous broad band (ATM) network comprising an access network and a core network by multiplexing the packet traffic and the connection oriented traffic into a common connection.

Multiservices medium access control protocol for wireless ATM system

A medium access control (MAC) layer protocol is used in a wireless ATM system for integrated support of ATM services, including constant bit-rate (CBR), variable bit-rate (VBR) and available bit-rate (ABR) services. The MAC protocol supports both connectionless packet and connection-oriented virtual circuit modes, with appropriate service parameter and quality-of-services selection. A dynamic time division, multiple access/time division multiplex (TDMA/TDM) approach accommodates the service classes in an integrated manner. A supervisory MAC procedure integrates ATM ABR/VBR/CBR virtual circuits, providing burst-by-burst allocation of ABR cells and call-by-call allocation of VBR and CBR bandwidth parameters. A mechanism is provided for the dynamic allocation of subframe capacities, assignment of ABR slots based on desired queueing rules, assignment of VBR slots based on ATM traffic shaper parameters and assignment of CBR slots based on bandwidth requirements.

METHOD FOR MULTIMEDIA FLOW TRANSPORT

An exchange having a digital switching network

Switching node in label multiplexing type switching network

Communications network

Video-on-demand system using return channels in ATM network - forms aggregate data stream by time-division multiplexing of individual subscribers' messages in assigned return channels

The distribution service centre (70) supplies multimedia services to a number of peripheral hubs (20) each linked to an ATM exchange (10), a narrowband network interface (17) and a variety of optical broadband network termination units (60, 65). The hub contains an ATM switch matrix (21), a narrowband multiplexer (22) and several optical line termination units (23). The 64 kbit/s stream of ATM cells is modulated with others in synchronous TDM on a carrier for transmission to the hub, where it is demodulated, buffer-stored and multiplexed together with streams from other subscribers into an aggregate stream of conventional capacity.

Data transport system

Network having secure fast packet switching and guaranteed quality of service

Method for mapping a service attribute pertaining to a connection oriented communications network in a connectionless communications network and vice versa

The method makes it possible to image a quality of service feature (distinguishing between high-priority and low-priority data streams) that is available in a connection-oriented communication network into a connectionless communication network. The application is the connection of an ATM network to a local area network (LAN), whereby the LAN has the aforementioned quality of service feature available to it and a distinction between high-priority data streams and low-priority data streams is possible with an imaging rule beyond the boundary ATM-LAN.

Breitband ISDN Paketvermittlungsanordnungen.

Network having secure fast packet switching and guaranteed quality of service

METHOD FOR MULTIMEDIA FLOW TRANSPORT

The invention concerns a method and a system for transporting to a common client terminal (2) at least a first flow with a first quality of service and at least a second flow with a second quality of service, the first flow being transmitted to the client terminal (2) through a connectionless network, and said second flow being transmitted to said client terminal (2) through a content server (6) over a connected network after booking the network resource with quality of service by message exchange via the unconnected network. The inventive method further comprises the following steps: setting up a high-speed link between the client terminal (2) and the content server (6); transmitting to the client terminal (2) through said high-speed link the second stream with the booked quality of service.

ATM DISTRIBUTION NETWORK

An exchange having a digital switching network

Video-on-demand service using ATM cells

Bandbreitenzuordnung, Übertragungsplanung und Vermeidung von Blockierungen in Breitband Asynchroner-Transfer-Modus Netzwerken

Vermittlungsknoten in einem Netz mit Etikett-Multiplexinformation

Multiservices MAC-protocol for wireless ATM system

Method and device for communicating information

A communication system for communicating on a network that includes communication devices performs communications in a connected mode or a non-connected mode. For at least one of the communication devices, to effect a transmission in the connected mode, the system performs an information operation during which an item of information representing a passband necessary for the transmission in the connected mode is broadcast on the network. The system performs a passband allocation operation to allocate the passband for connected-mode transmissions, based on the item of information. A second allocation operation is performed to allocate, for non-connected-mode transmissions, all or part of the passband not allocated for the connected-mode transmissions. The system adjusts the allocated passband to avoid congestion on the network.

Switching unit

Prior art: Narrowband switching unit (64 kbit/s) with switching network and peripheral modules. Technical problem: Additional transmission capacity must be made available within the switching unit for signalling and to control the peripheral modules. N-channel links incurring high cost. Basic concept: To overdimension switching network capacity significantly through the use of a high clock frequency. Example: Use of an ATM switching network instead of a narrowband switching network. Adaptation between switching network and peripherals. Advantages: Peripherals and switching network structure are retained; existing software can be incorporated. Short response times. ...

Vermittlungsstelle

DATA TRANSPORT SYSTEM

L'invention concerne un dispositif pour assurer une connexion de données asymétrique, comprenant un routeur de tête de réseau (2) pouvant être couplé à un circuit virtuel permanent MTA, un modem RTPC couplé au routeur de tête de réseau, une pluralité de routeurs en aval, pouvant chacun être couplé au circuit virtuel permanent MTA par l'intermédiaire d'interfaces MTA respectives, une pluralité de modem RTPC en aval, couplés chacun à un routeur en aval respectif par l'intermédiaire d'une interface série respective. Une adresse IP respective dans un seul sous-réseau est attribuée à chaque interface MTA de chaque routeur en aval respectif, et une adresse IP respective dans un seul sous-réseau est attribuée à chaque interface série de chaque routeur en aval respectif. L'invention concerne également un procédé pour établir une connexion de données asymétrique.

ATM switching unit

A transmission line control processor performs various processes in response to requests of a call processor for capture, allotment, and release of a subscriber line or an inter-station line. Additionally, in response to requests of the call processor for a reservation, connection, and disconnection of a path, the transmission line control processor instructs an ATM switch to connect or disconnect the path. These processes can be performed using with the existing functions of ordinary call processors, and such complicated processes as the management of bands at ATM switches are executed exclusively by a transmission line control processor.

Broadband ISDN packet switching arrangements

CONTROL METHOD OF ATM NETWORK AND CHANNEL

PURPOSE: To attain medium access control and efficient call permission control at a high speed by employing burst level control. CONSTITUTION: An idle counter is subjected to increment by a drain rte time constant Td so long as a count of a peak rate counter 12 is zero. The idle counter 30 is cleared at all time when the count of the counter 12 is other than zero. The count from the counter 12 is given to an AND gate 32 and a flip-flop(FF) 34. The constant Td is given to the gate 32. A clock signal is given to the FF 34 as its input. An output of the gate 32 is given to the counter 30 as its input. The output of the FF 34 is used to clear the counter 30. A latch 36 receives a carry output of the counter 30 as a 1st input and receives a clock pulse as a 2nd input. An output signal from the latch 36 indicates it whether a corresponding relational VC is active or idle. Thus, the call permission control is executed efficiently at a high speed. COPYRIGHT: (C)1995,JPO ...

Automation fallback to p2p lsps for mldp built multipoint-trees

A method of using a point-to-point (P2P) label switched path (LSP) to transmit multicast data packets partially through a multiprotocol label switched (MPLS) network when one or more label switched routers (LSRs) of the MPLS are not multicast label distribution protocol (mLDP) enabled. The P2P LSP can be used to transmit multicast data packets to the head end of a point-to-multipoint (P2MP) LSP created with mLDP enabled LSRs. The P2MP LSP can be used to transmit the multicast data packets through the MPLS network to intended receivers that are external to the MPLS network. The P2MP LSP can be built from an egress edge LSR towards an ingress edge LSR, by mLDP enabled LSRs. The P2P LSP can be built from a core mLDP enabled LSR to the ingress edge LSR, across a non-mLDP enabled LSR between the core mLDP enabled LSR and the ingress edge LSR.

System and Method for Communications Link Control

A method for operating an access point includes identifying one or more stations to receive a transmission from the access point, and generating a traffic indicator map (TIM) for the one or more stations identified, the TIM in accordance with a TIM generating rule, the TIM identifying at least an offset length and a number of entries. The method further includes broadcasting a beacon carrying the TIM to the one or more stations identified, the one or more stations configured to decode the beacon according to the TIM generating rule.

Network-optimized content delivery for high demand non-live contents

A method, apparatus and computer-readable storage medium distribute a non-live content stream in a network. An initial meta-file is transmitted in response to a request for the content, which identifies a division of the content stream into blocks, and available sources for delivery of the blocks. The initial meta-file can identify a first multicast and a second multicast server, assigning a first and second portion of the blocks for delivery using the first and second multicast source server, respectively. The first and second portions are transmitted using the first and second multicast source servers, respectively. The first and second portions correspond to distinct non-overlapping portions of the non-live content stream. The initial meta-file can also identify a unicast source server, assigning a third portion of the blocks for delivery using the unicast source server, the third portion being transmitted by the unicast source server.

Apparatus & method

A method of controlling data packet congestion in a data packet network comprises determining a reference flow condition that results in data packet congestion at a node of a data packet network, and identifying a data packet flow having a flow condition substantially equal to the reference flow condition. For such an identified data packet flow the following actions are taken causing a data packet to be dropped from the identified data packet flow, allowing a predetermined number of data packets from the identified data packet flow to proceed, and dropping data packets from the identified data packet flow subsequent to the predetermined number of data packets, until the packets that were not dropped have been delivered to the egress ports of the network.

Methods and Systems for Playing Media

A scalable architecture is disclosed for delivery of real-time information over a communications network. Embedded into the architecture is a control mechanism that provides for the management and administration of users who are to receive the real-time information. In the preferred embodiment, the information being delivered is high-quality audio. However, it could also be video, graphics, text or any other type of information that can be transmitted over a digital network. Preferably, there are multiple channels of information available simultaneously to be delivered to users, each channel consisting of an independent stream of information. A user chooses to tune in or tune out a particular channel, but does not choose the time at which the channel distributes its information. Advantageously, interactive (two-way) information can be incorporated into the system, multiple streams of information can be integrated for delivery to a user, and certain portions of the information being delivered can be tailored to the individual user.

Group addressed transmission techniques for directional wireless networks

Group-addressed transmission techniques for directional wireless networks are described. In one embodiment, for example, an apparatus may comprise logic to generate a frame sequence for transmission to an addressee group of a group-addressed fragmented medium access control service data unit (MSDU), the frame sequence to comprise a source identification frame followed by a series of fragment frames comprising fragments of the group-addressed fragmented MSDU, the logic to encapsulate the frame sequence in packets of a first packet sequence for transmission in a first direction and encapsulate the frame sequence in packets of a second packet sequence for transmission in a second direction, the transmission of the second packet sequence in the second direction to be initiated following completion of the transmission of the first packet sequence in the first direction. Other embodiments are described and claimed.

PACKET RETRANSMISSION

Through the identification of different packet-types, packets can be handled based on an assigned packet handling identifier. This identifier can, for example, enable forwarding of latency-sensitive packets without delay and allow error-sensitive packets to be stored for possible retransmission. In another embodiment, and optionally in conjunction with retransmission protocols including a packet handling identifier, a memory used for retransmission of packets can be shared with other transceiver functionality such as, coding, decoding, interleaving, deinterleaving, error correction, and the like. 1105.-. (canceled)106. A method of packet retransmission comprising:transmitting or receiving, using a transceiver, a plurality of packets,wherein at least one first packet of the plurality of packets is associated with a first delay requirement,wherein at least one second packet of the plurality of packets is associated with a second delay requirement, andwherein the second delay requirement is lower than the first delay requirement; andtransmitting or receiving, using the transceiver, a message comprising acknowledgement (ACK) information of the at least one first packet,wherein the ACK information is transmitted or received a plurality of times such that the ACK information is transmitted or received in a first DMT symbol and the ACK information is also transmitted or received in a second DMT symbol.107. The method of claim 106 , further comprising passing the at least one second packet when it is received without error to a higher layer without waiting for receipt of other retransmitted packets.108. The method of claim 106 , further comprising passing the at least one first packet when it is received without error to a higher layer without waiting for receipt of other retransmitted packets.109. The method of claim 106 , further comprising waiting for the receipt of other retransmitted packets before passing the at least one first packet a higher layer when they are ...

Multicast Group Allocation Method, Centralized Control Point, and Multicast Router

A multicast group allocation method, a centralized control point, and a multicast router are provided. A centralized control point determines a correspondence between at least two multicast groups and at least two RPs in a rendezvous point set according to information about the at least two multicast groups and information about the at least two RPs, where in the correspondence between the at least two multicast groups and the at least two RPs, each RP is corresponding to a same quantity of multicast groups; the centralized control point evenly allocates the at least two multicast groups to the at least two RPs according to the correspondence between the at least two multicast groups and the at least two RPs and diffuses the correspondence between the at least two multicast groups and the at least two RPs to all multicast routers on a PIM network. 1. A multicast group allocation method , comprising:determining, by a centralized control point, a correspondence between at least two multicast groups and at least two rendezvous points (RPs) in a rendezvous point set according to information about the at least two multicast groups and information about the at least two RPs, wherein in the correspondence between the at least two multicast groups and the at least two RPs, each RP is corresponding to a same quantity of multicast groups;evenly allocating, by the centralized control point, the at least two multicast groups to the at least two RPs according to the correspondence between the at least two multicast groups and the at least two RPs; anddiffusing, by the centralized control point, the correspondence between the at least two multicast groups and the at least two RPs to all multicast routers on a Protocol Independent Multicast (PIM) network.2. The method according to claim 1 , wherein when the centralized control point is a bootstrap router (BSR) claim 1 , before determining claim 1 , by the centralized control point claim 1 , the correspondence between at least two ...

Integrated information communication system

To provide an integrated information communication system without using dedicated lines or the Internet, ensuring communication speed, communication quality, communication trouble countermeasures in a unified manner, wherein security and reliability in communication is ensured. The system is comprised of an access control apparatus for connecting a plurality of computer communication networks or information communication equipment to each, and a relay device for networking the aforementioned access control apparatus, the system having functions for performing routing by transferring information by a unified address system, and is configured such that the aforementioned plurality of computer communication networks or information communication equipment can perform communications in an interactive manner.

COMMUNICATION CONTROL METHOD AND USER TERMINAL

A method, base station, and device perform an offload from a cellular RAN to a wireless LAN via a network selection operation to select an access network with which user terminal traffic is exchanged from the cellular RAN and the wireless LAN on the basis of parameters transmitted from a first base station to the user terminal. The parameters comprise at least one of a cellular signal strength threshold, a WLAN signal strength threshold, and a WLAN load threshold. After transmitting the parameters, the transmitted parameters are transferred from the first cellular base station to a second cellular base station, in response to the user terminal performing a handover from the first cellular base station to the second cellular base station. The transferred parameters enable the second cellular base station to determine whether there is a need for a change of configuration indicated by the transferred parameters. 1. A communication control method comprising:controlling a network selection operation to select, from a cellular radio access network (RAN) and a wireless local area network (WLAN), an access network with which traffic of a user terminal is exchanged;transmitting common parameters from a first cellular base station by broadcast, the common parameters used for the network selection operation to prompt traffic steering between the cellular RAN and the WLAN, the first cellular base station included in the cellular RAN, wherein the common parameters are applicable to both an idle state user terminal and a connected state user terminal;transmitting dedicated parameters from the first cellular base station to the user terminal using a unicast radio resource control (RRC) signaling, the user terminal connected to the first cellular base station, and the dedicated parameters used for the network selection operation to prompt traffic steering between the cellular RAN and the WLAN, wherein the dedicated parameters are only applied to a connected state user terminal, and ...

METHOD FOR DISCRIMINATING BETWEEN UNICAST DEVICE TO DEVICE(D2D) COMMUNICATION AND GROUPCAST D2D COMMUNICATION

Embodiments herein disclose a method for identifying a unicast Device to Device (D2D) communication. Further, the method includes generating, by a source User Equipment (UE), a D2D Media Access Control (MAC) Protocol Data Unit (PDU) comprising a unicast parameter. Further, the method includes transmitting, by the source UE, the D2D MAC PDU to the destination UE. Further, the method includes receiving, by the destination UE, the D2D MAC PDU. Further, the method includes detecting, by the destination UE, one of unicast parameters and groupcast parameters of the D2D MAC PDU. Furthermore, the method includes identifying, by the UE, the D2D MAC PDU is for one of the unicast D2D communication when the unicast parameters are detected, and the groupcast D2D communication when the groupcast parameters are detected. 115-. (Canceled)16. A method for device to device (D2D) communication of a first terminal , the method comprising:generating a media access control (MAC) header comprising first information for identifying whether a MAC service data unit (SDU) is for a groupcast or a unicast;transmitting a MAC protocol data unit (PDU) including the MAC header and the MAC SDU to a second terminal or a group including the second terminal.17. The method of claim 16 ,wherein the MAC header further comprises second information for identifying the second terminal or the group,wherein if the first information indicates the MAC SDU is for the groupcast, the second information is a groupcast identifier, andwherein if the first information indicates the MAC SDU is for the unicast, the second information is a unicast identifier.18. The method of claim 16 ,wherein if the first information is set to 0001, the first information indicates the MAC SDU is for the groupcast, andwherein if the first information is set to 0010, the first information indicates the MAC SDU is for the unicast.19. The method of claim 16 ,wherein the MAC header further comprises third information for identifying the first ...

ENHANCED HANDLING OF MULTICAST DATA STREAMS WITHIN A BROADBAND ACCESS NETWORK OF A TELECOMMUNICATIONS NETWORK

A method for handling of multicast data streams within a broadband access network of a telecommunications network includes: a specific service edge node receiving a join request message from or through a specific customer premises equipment; an activation request message being transmitted, by the specific service edge node, to a multicast controller node within the broadband access network; and the multicast controller node generating and/or replicating multicast data stream-related data packets and injecting these multicast data stream-related data packets, using a corresponding session identifier information, into a point-to-point-protocol connection or tunneling protocol connection between the specific service edge node and the specific customer premises equipment. 1. A method for handling of multicast data streams within a broadband access network of a telecommunications network , wherein the broadband access network comprises a plurality of service edge nodes to be connected to customer premises equipments , the customer premises equipments being provided to be connected to the broadband access network for handling both unicast traffic and multicast data streams between the customer premises equipments and the broadband access network ,wherein, for transmitting unicast traffic-related data packets between a specific service edge node and a specific customer premises equipment, a point-to-point-protocol connection or a tunneling protocol connection is established between the specific service edge node and the specific customer premises equipment, the point-to-point-protocol connection or the tunneling protocol connection having an assigned session identifier information, wherein—in case that a multicast data stream, comprising multicast data stream-related data packets, is to be transmitted to the specific customer premises equipment the method comprises:in a first step, the specific service edge node receives a join request message from or through the specific ...

Segmentation Within a Broadcast Domain in Ethernet VPN

In one embodiment, a method includes receiving a broadcast, unknown-unicast, or multicast (BUM) frame from a connected device, where the BUM frame is associated with a broadcast domain, determining a segment within the broadcast domain associated with the device, adding to the BUM frame a segment identifier that uniquely identifies the segment within the broadcast domain, and causing the BUM frame to be delivered to one or more recipient network apparatuses in a network associated with the broadcast domain, where the segment identifier added to the BUM frame is configured to be used by the one or more recipient network apparatuses to selectively forward the BUM frame to connected devices that are associated with segment identifier. 1. A network apparatus , comprising:one or more processors; and receive a first control plane information indicating a first device is associated with a first segment within a broadcast domain, wherein the first control plane information is received through a network associated with a broadcast domain;', 'store a record of an association between the first device and the first segment within the broadcast domain;', 'receive, from a second device connected to the network apparatus, a unicast frame destined to the first device, wherein the unicast frame is determined to be associated with a second segment within the broadcast domain based on a port through which the second device connects to the network apparatus;', 'determine that the second segment is identical to the first segment by looking up the stored record; and', 'cause, in response to the determination, the unicast frame to be delivered to the first device through the network associated with the broadcast domain., 'one or more computer-readable non-transitory storage media coupled to the one or more processors and comprising instructions operable when executed by the one or more processors to cause the network apparatus to2. The network apparatus of claim 1 , the one or more ...

Information processing system, information processing method, information processing apparatus, and non-transitory storage medium encoded with computer readable information processing program

Each of a first information processing apparatus and a second information processing apparatus includes a display, an operation portion, and a radio communication unit. The second apparatus transmits operation information accepted by the operation portion of the second apparatus to the first apparatus through the radio communication unit. The first apparatus performs application processing based on operation information accepted by the operation portion of the first apparatus and the operation information from the second apparatus, generates an application image including a result of execution of the application processing, shows the application image on the display of the first apparatus, and transmits the application image to the second apparatus through the radio communication unit of the first apparatus. The second apparatus shows the application image from the first apparatus on the display of the second apparatus.

COMMUNICATION APPARATUS, MEDIA DISTRIBUTION SYSTEM, MEDIA DISTRIBUTION METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM

The present disclosure aims to provide a communication apparatus capable of achieving media distribution with a high quality of user experience. A communication apparatus is a communication apparatus configured to distribute media data to another communication apparatus via a plurality of lines, the apparatus including: a communication quality estimation unit configured to estimate communication qualities of the respective lines; a bit rate determination unit configured to calculate, from the estimated communication qualities of the respective lines, an index value indicating a quality of user experience when each of the lines is used and determine a bit rate of the media data based on the calculated index value; and a data allocation unit configured to allocate a data amount of the media data to the respective lines based on the estimated communication qualities of the respective lines and the bit rate that has been determined. 1. A communication apparatus comprising:a communication quality estimation unit configured to estimate communication qualities of a plurality of respective lines that distribute media data to another communication apparatus;a bit rate determination unit configured to calculate, from the estimated communication qualities of the respective lines, an index value indicating a quality of user experience when each of the lines is used and determine a bit rate of the media data based on the calculated index value; anda data allocation unit configured to allocate a data amount of the media data to the respective lines based on the estimated communication qualities of the respective lines and the bit rate that has been determined.2. The communication apparatus according to claim 1 , whereinthe communication quality is a communication rate, andthe bit rate determination unit classifies the respective lines into main lines that mainly perform transmission of the media data and sub lines that auxiliarily perform transmission of the media data based on ...

METHOD AND APPARATUS FOR PROVIDING RESILIENCY FOR DELAY SENSITIVE SERVICES

Various embodiments relate to a method and apparatus for guaranteeing symmetrical delay in both directions for a Time-Division Multiplexing Pseudowire (“TDM-PW”) service on a packet switching network (“PSN”), the method including the steps of using a transport method to specify a first path including a corresponding pair of unidirectional service tunnels for the TDM PW service between a master router and a slave router, detecting a failure on either of the corresponding pair of unidirectional service tunnels of the first path between the master router and the slave router, switching the master router and the slave router to a second path including a corresponding pair of unidirectional service tunnels, resetting a jitter buffer on the master router and the slave router and adjusting the jitter buffer to a halfway point, and transmitting and receiving data using the second path including the corresponding pair of unidirectional service tunnels. 1. A method for guaranteeing symmetrical delay in both directions for a Time-Division Multiplexing Pseudowire (“TDM-PW”) service on a packet switching network (“PSN”) , the method comprising the steps of:using a transport method to specify a first path including a corresponding pair of unidirectional service tunnels for the TDM PW service between a master router and a slave router;detecting a failure on either of the corresponding pair of unidirectional service tunnels of the first path between the master router and the slave router;switching the master router and the slave router to a second path including a corresponding pair of unidirectional service tunnels;resetting a jitter buffer on the master router and the slave router and adjusting the jitter buffer to a halfway point; andtransmitting and receiving data using the second path including the corresponding pair of unidirectional service tunnels.2. The method for guaranteeing symmetrical delay in both directions for a TDM PW service on a PSN of claim 1 , further ...

PACKET RETRANSMISSION

Through the identification of different packet-types, packets can be handled based on an assigned packet handling identifier. This identifier can, for example, enable forwarding of latency-sensitive packets without delay and allow error-sensitive packets to be stored for possible retransmission. In another embodiment, and optionally in conjunction with retransmission protocols including a packet handling identifier, a memory used for retransmission of packets can be shared with other transceiver functionality such as, coding, decoding, interleaving, deinterleaving, error correction, and the like. 1105.-. (canceled)106. An apparatus comprising:a multicarrier transceiver including a processor and memory capable of:transmitting a packet using forward error correction encoding and interleaving, wherein the packet comprises a header field and a plurality of Reed-Solomon codewords, and wherein the header field comprises a sequence identifier (SID); andreceiving a message using forward error correction decoding and without using deinterleaving, wherein the message is received in a single DMT symbol, and wherein the message includes an acknowledgement (ACK) or a negative acknowledgement (NACK) of the transmitted packet.107. The apparatus of claim 106 , wherein the received message has a higher immunity to noise than the transmitted packet.108. The apparatus of claim 106 , wherein the transceiver is capable of retransmitting the packet using forward error correction encoding and interleaving.109. The apparatus of claim 106 , wherein a physical layer of the transceiver is capable of generating the packet and the message.110. The apparatus of claim 106 , wherein a layer above a physical layer of the transceiver is capable of generating the packet and the message.111. The apparatus of claim 107 , wherein a physical layer of the transceiver is capable of generating the packet and the message.112. The apparatus of claim 107 , a layer above a physical layer of the transceiver is ...

Communication device and communication method

[Object] To provide a communication device and a communication method which are capable of achieving both an improvement in reliability of communication in which a frame is transmitted to a plurality of destinations and effective use of wireless communication resources. [Solution] The communication device includes: a communication unit configured to perform communication of a frame. The communication unit transmits a transmission acknowledgment request frame for a transmission acknowledgment response frame including frequency allocation information specifying a transmission frequency of the transmission acknowledgment response frame, and receives the transmission acknowledgment response frame which has undergone frequency division multiplexing, on the basis of the frequency allocation information.

COMMUNICATION DEVICE AND COMMUNICATION METHOD

[Object] To provide a communication device and a communication method which are capable of achieving both an improvement in reliability of communication in which a frame is transmitted to a plurality of destinations and effective use of wireless communication resources. 1one or more circuits configured to perform communication of a data frame, transmit, by multicast after the communication of the data frame, a block acknowledgment request (BAR) frame for a block acknowledgment (BA) frame including frequency allocation information specifying a transmission frequency of the BA frame, the BA frame acknowledging the data frame communicated from the communication device, and', 'receive the BA frame which is frequency division multiplexed, on the basis of the frequency allocation information,', 'wherein the BAR frame includes a receiver address field storing an identifier of a multicast group specifying destinations of the BAR frame and identification information fields specifying each of one or more destinations of the BAR frame, identification information being association identifiers of the one or more destinations selected from the multicast group, the frequency allocation information being specified for each of the association identifiers., 'wherein the one or more circuits are configured to'}: A communication device, comprising: This application is a continuation of U.S. application Ser. No. 17/137,378, filed Dec. 30, 2020, which is a continuation of U.S. application Ser. No. 16/429,164, filed Jun. 3, 2019 (now U.S. Pat. No. 10,887,121), which is a continuation of Ser. No. 15/568,860, filed Oct. 24, 2017 (now U.S. Pat. No. 10,361,876), which is based on PCT filing PCT/JP2016/062163, filed Apr. 15, 2016, and claims priority to JP 2015-135956, filed Jul. 7, 2015, the entire contents of each are incorporated herein by reference.The present disclosure relates to communication devices and communication methods.In recent years, wireless local area networks (LANs) as ...

PACKET RETRANSMISSION

Through the identification of different packet-types, packets can be handled based on an assigned packet handling identifier. This identifier can, for example, enable forwarding of latency-sensitive packets without delay and allow error-sensitive packets to be stored for possible retransmission. In another embodiment, and optionally in conjunction with retransmission protocols including a packet handling identifier, a memory used for retransmission of packets can be shared with other transceiver functionality such as, coding, decoding, interleaving, deinterleaving, error correction, and the like. 1. A method of packet retransmission comprising:transmitting or receiving a plurality of packets;identifying at least one packet of the plurality of packets as a packet that should not be retransmitted.2105-. (canceled) This application claims the benefit of and priority under 35 U.S.C. § 119(e) to U.S. Patent Application Nos. 60/792,236, filed Apr. 12, 2006, entitled “xDSL Packet Retransmission Mechanism,” and 60/849,650, filed Oct. 5, 2006, entitled “xDSL Packet Retransmission Mechanism with Examples,” which are both incorporated herein by reference in their entirety.This invention generally relates to communication systems. More specifically, an exemplary embodiment of this invention relates to retransmission of packets in a communication environment. An exemplary embodiment of this invention also relates to memory sharing between transmission functions and other transceiver functions.Exemplary aspects of the invention relate to handling of packets and the assignment of a packet handling identifier. Exemplary aspects relate to sharing of resources between retransmitted packets and other transceiver functions. In addition, exemplary aspects relate to sharing of resources between packets associated with the packet handling identifier and other transceiver functions.More specifically, aspects of the invention relate to assigning a packet handling identifier to one or more ...

Method and node for employing network connections over a connectionless transport layer protocol

A method of establishing a network connection between two nodes of a communication network via a connectionless transport layer communication protocol is presented. In the method, a plurality of data packets is exchanged between a first node and a second node. Each of the data packets comprises a header and a payload formatted according to the connectionless protocol. The connectionless protocol payload of the data packets includes a separate header comprising a first port indicator for the first node and a second port indicator for the second node. The separate header of at least one of the data packets includes an indication to establish a connection between the first node and the second node. In response to the exchange of data packets, the first and second nodes establish the connection, wherein the first port indicator and the second port indicator are associated with the established connection between the nodes.

INFORMATION PROCESSING METHOD, ELECTRONIC DEVICE AND COMPUTER STORAGE MEDIUM

In illustrative embodiments, an information processing method, an electronic device, and a computer-readable storage medium are provided. The method includes: if it is determined that a predetermined indicator is detected in a header of a received packet, acquiring information for indicating a source port, a destination port, a forwarding indicator, a process identifier, and a maximum number of processes of the packet from the header; updating a port forwarding table based on the source port, the destination port, and the forwarding indicator; performing a user-defined action on the packet to obtain a result packet; and if it is determined that a quantity of process identifiers reaches the maximum number of processes, determining one or more forwarding ports for the result packet based on the maximum number of processes, the forwarding indicator, and the updated port forwarding table, to forward the result packet to the one or more forwarding ports. 1. An information processing method , comprising:in response to determining that a predetermined indicator is detected in a header of a received packet, acquiring information for indicating a source port, a destination port, a forwarding indicator, a process identifier, and a maximum number of processes of the packet from the header;updating a port forwarding table based on the source port, the destination port, and the forwarding indicator;performing a user-defined action on the packet to obtain a result packet; andin response to determining that a quantity of process identifiers reaches the maximum number of processes, determining one or more forwarding ports for the result packet based on the maximum number of processes, the forwarding indicator, and the updated port forwarding table, to forward the result packet to the one or more forwarding ports.2. The method according to claim 1 , wherein updating the port forwarding table comprises:searching for the source port in the port forwarding table; andin response to ...

Identifying Network Conditions

A method of identifying a network condition between a pair of network devices, the method comprising: determining a first time period between receiving a first-received packet for an initial media frame and receiving a first-received packet for a subsequent media frame, wherein the packets are received at one of the devices via a network and each received packet comprises a timestamp; determining a second time period between the timestamp of the packet for the initial media frame and the timestamp of the packet for the subsequent media frame; and identifying a network condition in dependence on a difference between the first and second time periods.

APPARATUS AND METHOD FOR TRANSMITTING MULTIPLE ON-DEMAND AUDIO STREAMS LOCALLY TO WEB-ENABLED DEVICES

An apparatus and method for transmitting multiple on-demand audio streams locally to web-enabled user devices. Primarily usable for local audio acquisition and instant redistribution in conference halls with translation booths and stadiums with commentators, the technology is scalable and can be tailored to suit any local acquisition and distribution of both digital and analog audio signals. The technology is reliant on the local network configuration and wireless coverage. 1. An apparatus for transmitting multiple on-demand audio streams locally to web-enabled devices , the apparatus comprising:a fused power entry module;a power supply;a microcomputer powered by the power supply;an audio acquisition card connected to the microcomputer;analog audio input ports connected to the audio acquisition card for receiving analog audio signals which are digitized by the audio acquisition card;ground-loop noise isolators and noise filters connected to each of the analog audio input ports for reducing noise in each of the analog audio signals; anda router connected to the microcomputer and powered by the power supply, the router having two network ports.2. The apparatus of wherein the ground-loop noise isolators combine the analog audio signals into a single stereo analog signal.3. The apparatus of wherein the power supply has a power port for receiving electrical power.4. The apparatus of wherein the analog audio input ports are XLR3 ports.5. The apparatus of wherein the microcomputer executes FFmpeg software to generate real-time protocol (RTP) streams.6. A method of transmitting multiple on-demand audio streams locally to web-enabled devices claim 1 , the method comprising steps of:receiving analog audio signals via analog audio input ports;filtering and combining the analog audio signals using ground-loop noise isolators connected to each of the analog audio input ports;digitizing the analog audio signals using an audio acquisition card connected to the ground-loop noise ...

Integrated information communication system

A communication system, for functioning without the use of dedicated lines or the Internet so as to ensure communication speed, communication quality, and communication trouble countermeasures, including a communication network and domain name server. The domain name server includes a domain name tree with a country number of a telephone number as a level 2 domain name of the domain name tree, and the domain name server receives, from a terminal, a telephone number of a destination terminal. Furthermore, based on the telephone number of the destination terminal, the domain name server (i) seeks out, in the domain name tree, an Integrated Information Communication System (ICS) user address of the destination terminal, and (ii) sends the ICS user address to the terminal, such that the communication system receives, from the terminal, the ICS user address as a destination address, and sends the ICS user frame to the destination terminal.

ELECTRONIC DEVICE AND METHOD FOR RECEIVING DATA VIA AN ASYNCHRONOUS COMMUNICATION NETWORK, RELATED COMMUNICATION SYSTEM AND COMPUTER PROGRAM

This electronic device for receiving data via an asynchronous communication network including at least one elementary network, is configured to be connected to said elementary network and comprises: 1. An electronic receiving device for receiving data via an asynchronous communication network including at least one elementary network , the electronic device being configured to be connected to said elementary network and comprising:a receiving module configured to receive several successive data frames via the asynchronous communication network, each frame being sent over said elementary network according to a predefined sending table and with a minimum time gap between sending time instants of two successive frames,a verification module configured, for at least two received data frames, to estimate a network jitter from the minimum time gap and reception time instants of at least two frames received on said elementary network, then to compare the estimated jitter to an authorized range of network jitter values.2. The device according to claim 1 , wherein the authorized range of network jitter values is determined through preliminary learning including a sending of predefined sequence(s) of frame(s).3. The device according to claim 2 , wherein the sending of normal sequences corresponds to authorized network jitter values and abnormal sequences corresponding to non-compliant network jitter values.4. The device according to claim 1 , wherein the authorized range of network jitter values is determined through a static analysis of the network.5. The device according to claim 1 , wherein the authorized range of network jitter values depends on an operating phase in which an aircraft is found claim 1 , aircraft on which the electronic receiving device is configured to be embedded.6. The device according to claim 1 , wherein the verification module is further configured to compare the estimated jitter for the respective elementary network to the estimated jitter(s) for the ...

Increasing probability of multicast transmissions in wlan

A network device detects a multicast video stream being from an upstream resource being sent to downstream multicast members. If the number of multicast members are below a threshold (e.g., 5 stations), multicast network packets can be converted to unicast network packets. On the other hand, if the number of multicast members are above the threshold, the multicast members are divided into groupings based on capabilities of the multicast members, such as data rate capability. Data rates of transmissions are set according to the group data rate capabilities. As a result, the higher data rate members are able to operate at a higher speed rather than at the lowest common denominator. Further, because there are several multicast streams being sent, packets missed from the higher data rate stream can be picked up on the lower data rate stream.

TECHNIQUES FOR NETWORK MULTICASTING WITH BUFFERING

Examples can include buffering techniques for transmission control protocol (TCP) based multicast networks. Various devices in the multicast network can include buffering features to behave as a proxy for the source server, thereby splitting the network into multiple subdomains. Each subdomain could therefore independently provide error control for the TCP-based multicast network. 1. A method , comprising:receiving, at a multicast transmission control protocol (TCP) proxy, a multicast data segment from an adjacent upstream node;sending an acknowledgement to include an indication of receipt of the multicast data segment to the adjacent upstream node; andstoring the multicast data segment in a buffer coupled to the multicast TCP proxy.2. The method of claim 1 , comprising sending the multicast data segment to an adjacent downstream node.3. The method of claim 2 , sending the multicast data segment to an adjacent downstream node comprising:retrieving the multicast data segment from the buffer; andsending an information element to the adjacent downstream node, the information element comprising an indication of the multicast data segment.4. The method of claim 1 , comprising updating a session local state (SLS) record to include an indication of acknowledgement of receipt of the multicast data segment.5. The method of claim 4 , comprising updating the SLS record to include an indication of storage of the multicast data segment to the buffer.6. The method of claim 1 , the multicast TCP proxy comprising the buffer.7. The method of claim 3 , comprising receiving a control signal to include an indication of acknowledgment of receipt of the multicast data segment by at least one downstream node.8. The method of claim 7 , the control signal to include an indication of acknowledgment of receipt of the multicast data segment by a plurality of downstream nodes.9. The method of claim 7 , comprising flushing the multicast data segment from the buffer based on receipt of the ...

System and Method for Source Routing With One or More Delay Segments

A plurality of network nodes, under the control of a network controller, are configured to perform a method to direct packets in a packet flow from a source to a destination. In one embodiment, the network controller transmits an instruction to a first node in a network instructing the first node to transmit a first packet in the packet flow along a first route from the source to the destination, the first route having a first delay. The network controller also transmits an instruction to a node in the network to transmit a second packet in the packet flow along a second route different from the first route, the second route having a second delay, the second delay having a duration less than a duration of the first delay. The network controller further transmits an instruction to a node in the second route to delay the second packet in order to delay arrival of the second packet at the destination. 1. A method for a network node to direct packets in a packet flow from a source to a destination , the method comprising:in accordance with an instruction from a network controller, buffering a packet in a packet flow for a delay duration, prior to transmitting the packet along a second route from a source to a destination, the delay duration determined in accordance with a difference in a delay associated with the second route and a delay associated with a first route between the source and the destination.2. The method of claim 1 , wherein the network node is one of an egress node and an ingress node of the network.3. The method of claim 1 , wherein the first route and the second route are identified in part by a source routing packet header or a Multiprotocol Label Switching (MPLS) segment routing packet header that encapsulates each packet.4. The method of claim 1 , further comprising:reducing the delay duration for a subsequent packet in the packet flow in response to receipt of an instruction from the network controller.5. The method of claim 4 , wherein the ...

COMMUNICATION DEVICE AND COMMUNICATION METHOD

[Object] To provide a communication device and a communication method which are capable of achieving both an improvement in reliability of communication in which a frame is transmitted to a plurality of destinations and effective use of wireless communication resources. 1one or more circuits configured to perform communication of a frame, transmit a transmission acknowledgment request frame for a transmission acknowledgment response frame including frequency allocation information specifying a transmission frequency of the transmission acknowledgment response frame, and', 'receive the transmission acknowledgment response frame which has undergone frequency division multiplexing, on the basis of the frequency allocation information, wherein the delivery acknowledgement request frame being transmitted to one or a subset of devices that is selected to reply with the transmission acknowledgement response frame, and wherein the frequency allocation information includes information specifying a bandwidth of the transmission frequency., 'wherein the one or more circuits are configured to'}: A communication device, comprising: This application is a continuation of U.S. application Ser. No. 15/568,860, filed Oct. 24, 2017, which is based on PCT filing PCT/JP2016/062163, filed Apr. 15, 2016, and claims priority to JP 2015-135956, filed Jul. 7, 2015, the entire contents of each are incorporated herein by reference.The present disclosure relates to communication devices and communication methods.In recent years, wireless local area networks (LANs) as typified by IEEE (Institute of Electrical and Electronics Engineers) 802.11 have been widespread. In addition, along with the widespread use of wireless LANs, products supporting the wireless LANs have been increasing.On the other hand, techniques for efficiently communicating with a plurality of communication devices have been developed. As such a technique, for example, a multicast scheme of transmitting frames to one or more ...

Methods, apparatuses and computer-readable mediums for managing multicast channels in access networks

A client device is configured to: receive a list of multicast channels from a multicast controller, the list of multicast channels identifying multicast channels to be multicast to a plurality of clients in the access network; receive an updated list of multicast channels from the multicast controller; identify differences between the list of multicast channels and the updated list of multicast channels; and inform the termination node of differences between the list of multicast channels and the updated list of multicast channels.

PACKET RETRANSMISSION AND MEMORY SHARING

Through the identification of different packet-types, packets can be handled based on an assigned packet handling identifier. This identifier can, for example, enable forwarding of latency-sensitive packets without delay and allow error-sensitive packets to be stored for possible retransmission. In another embodiment, and optionally in conjunction with retransmission protocols including a packet handling identifier, a memory used for retransmission of packets can be shared with other transceiver functionality such as, coding, decoding, interleaving, deinterleaving, error correction, and the like. 1. A method of packet retransmission comprising:transmitting or receiving a plurality of packets;identifying at least one packet of the plurality of packets as a packet that should not be retransmitted.2105-. (canceled) This application is a Continuation of U.S. patent application Ser. No. 13/766,059, filed Feb. 13, 2013, now U.S. Pat. No. 8,645,784, which is a Continuation of U.S. patent application Ser. No. 12/783,758, filed May 20, 2010, now U.S. Pat. No. 8,407,546, which is a Continuation of U.S. patent application Ser. No. 12/295,828, filed Oct. 2, 2008, now U.S. Pat. No. 8,335,956, which is a national stage application under 35 U.S.C. 371 of PCT Application No. PCT/US2007/066522 having an international filing date of Apr. 12, 2007, which designated the United States, which PCT application claims the benefit of and priority under 35 U.S.C. § 119(e) to U.S. Patent Application Nos. 60/792,236, filed Apr. 12, 2006, entitled “xDSL Packet Retransmission Mechanism,” and 60/849,650, filed Oct. 5, 2006, entitled “xDSL Packet Retransmission Mechanism with Examples,” each of which are incorporated herein by reference in their entirety.This invention generally relates to communication systems. More specifically, an exemplary embodiment of this invention relates to retransmission of packets in a communication environment. An exemplary embodiment of this invention also relates to ...

PACKET RETRANSMISSION

Through the identification of different packet-types, packets can be handled based on an assigned packet handling identifier. This identifier can, for example, enable forwarding of latency-sensitive packets without delay and allow error-sensitive packets to be stored for possible retransmission. In another embodiment, and optionally in conjunction with retransmission protocols including a packet handling identifier, a memory used for retransmission of packets can be shared with other transceiver functionality such as, coding, decoding, interleaving, deinterleaving, error correction, and the like. 1. A method of packet retransmission comprising:transmitting or receiving a plurality of packets;identifying at least one packet of the plurality of packets as a packet that should not be retransmitted.2105-. (canceled) This application claims the benefit of and priority under 35 U.S.C. §119(e) to U.S. Patent Application Nos. 60/792,236, filed Apr. 12, 2006, entitled “xDSL Packet Retransmission Mechanism,” and 60/849,650, filed Oct. 5, 2006, entitled “xDSL Packet Retransmission Mechanism with Examples,” which are both incorporated herein by reference in their entirety.This invention generally relates to communication systems. More specifically, an exemplary embodiment of this invention relates to retransmission of packets in a communication environment. An exemplary embodiment of this invention also relates to memory sharing between transmission functions and other transceiver functions.Exemplary aspects of the invention relate to handling of packets and the assignment of a packet handling identifier. Exemplary aspects relate to sharing of resources between retransmitted packets and other transceiver functions. In addition, exemplary aspects relate to sharing of resources between packets associated with the packet handling identifier and other transceiver functions.More specifically, aspects of the invention relate to assigning a packet handling identifier to one or more ...

Segmentation Within a Broadcast Domain in Ethernet VPN

In one embodiment, a method includes receiving a broadcast, unknown-unicast, or multicast (BUM) frame from a connected device, where the BUM frame is associated with a broadcast domain, determining a segment within the broadcast domain associated with the device, adding to the BUM frame a segment identifier that uniquely identifies the segment within the broadcast domain, and causing the BUM frame to be delivered to one or more recipient network apparatuses in a network associated with the broadcast domain, where the segment identifier added to the BUM frame is configured to be used by the one or more recipient network apparatuses to selectively forward the BUM frame to connected devices that are associated with segment identifier. 1. A network apparatus , comprising:one or more processors; and receive a broadcast, unknown-unicast, or multicast (BUM) frame from a device connected to the network apparatus, wherein the BUM frame is associated with a broadcast domain;', 'determine a first segment within the broadcast domain associated with the device;', 'add to the BUM frame a first segment identifier that uniquely identifies the first segment within the broadcast domain; and', 'cause the BUM frame to be delivered to one or more recipient network apparatuses in a network associated with the broadcast domain, wherein the first segment identifier added to the BUM frame is configured to be used by the one or more recipient network apparatuses to selectively forward the BUM frame to connected devices that are associated with first segment identifier., 'one or more computer-readable non-transitory storage media coupled to the one or more processors and comprising instructions operable when executed by the one or more processors to cause the network apparatus to2. The network apparatus of claim 1 , wherein the determination of the first segment is based on a port through which the device connects to the network apparatus.3. The network apparatus of claim 1 , wherein after ...

PACKET RETRANSMISSION AND MEMORY SHARING

Through the identification of different packet-types, packets can be handled based on an assigned packet handling identifier. This identifier can, for example, enable forwarding of latency-sensitive packets without delay and allow error-sensitive packets to be stored for possible retransmission. In another embodiment, and optionally in conjunction with retransmission protocols including a packet handling identifier, a memory used for retransmission of packets can be shared with other transceiver functionality such as, coding, decoding, interleaving, deinterleaving, error correction, and the like. 1. A method of packet retransmission comprising:transmitting or receiving a plurality of packets;identifying at least one packet of the plurality of packets as a packet that should not be retransmitted.2105-. (canceled) This application is a Continuation of U.S. patent application Ser. No. 13/766,059, filed Feb. 13, 2013, now U.S. Pat. No. 8,645,784, which is a Continuation of U.S. patent application Ser. No. 12/783,758, filed May 20, 2010, now U.S. Pat. No. 8,407,546, which is a Continuation of U.S. patent application Ser. No. 12/295,828, filed Oct. 2, 2008, now U.S. Pat. No. 8,335,956, which is a national stage application under 35 U.S.C. 371 of PCT Application No. PCT/US2007/066522 having an international filing date of Apr. 12, 2007, which designated the United States, which PCT application claims the benefit of and priority under 35 U.S.C. § 119(e) to U.S. Patent Application Nos. 60/792,236, filed Apr. 12, 2006, entitled “xDSL Packet Retransmission Mechanism,” and 60/849,650, filed Oct. 5, 2006, entitled “xDSL Packet Retransmission Mechanism with Examples,” each of which are incorporated herein by reference in their entirety.This invention generally relates to communication systems. More specifically, an exemplary embodiment of this invention relates to retransmission of packets in a communication environment. An exemplary embodiment of this invention also relates to ...

Multiple transmission method

CELL RESCUENCIATION SYSTEM FOR A TELECOMMUNICATION NETWORK.

UN SISTEMA RESECUENCIAL CELULAR PARA UNA SECCION DE RESECUENCIAMIENTO (RS) QUE TIENE DOS ENTRADAS S1N), ACOPLADA A ENTRADAS (12N) DE UNA RED DE CONMUTACION (SN2) MEDIANTE ENLACES DE TRANSMISION (TLN), DISPUESTOS EN UN GRUPO DE ENLACES (LG). LAS CELULAS TRANSMITIDAS DESDE LAS ENTRADAS A LAS SALIDAS (N2M) DE LA RED DE CONMUTACION SE SUJETAN A UN PRIMER RETARDO DE TIEMPO VARIABLE, Y DESPUES SE ALMACENAN EN ELEMENTOS DE BLOQUEO (R2M) DURANTE UN SEGUNDO TIEMPO DE RETARDO VARIABLE, CON ANTERIORIDAD A LIBERARSE A UNA SALIDA DE LA SECCION. ESTE SEGUNDO RETARDO DE TIMEPO SE SELECCIONA DE TAL FORMA QUE, PARA CADA CELULA, LA SUMA DE LOS RETARDOS DE TIEMPO PRIMERO Y SEGUNDO ES SUSTANCIALMENTE IGUAL AL VALOR DEL TIEMPO PREDETERMINADO Y CONSTANTE. EL TAMAÑO DEL MEDIO DE BLOQUEO SE DETERMINA POR LA DIFERENCIA QUE HAY ENTRE ESTE VALOR DE TIEMPO CONSTANTE PREDETERMINADO Y UN RETARDO DE TRANSFERENCIA FIJO (TD), POR DEBAJO DEL CUAL NO PUEDE TRANSMITIRSE CELULA ALGUNA DESDE UNA ENTRADA A UNA SALIDA. TAMBIEN SEREIVINDICA UN METODO PARA CORRELACIONAR EN FASE DOS RELOJES (CK1/2) PRODUCIENDO VALORES DE IMPRESION DE FECHA Y HORA (RELOJES FECHADORES) (TA1, TA2, TB). EL PRIMER RELOJ ENVIA UN PRIMER VALOR (TA1) DE IMPRESION DE FECHA Y HORA AL SEGUNDO RELOJ (CK2), EL CUAL DESPUES GENERA UN SEGUNDO VALOR (TB) DE IMPRESION DE FECHA Y HORA. A CONTINUACION SE DETERMINA UN VALOR DE COMPENSACION (TTC) DE IMPRESION DE FECHA Y HORA, IGUAL A LA DIFERENCIA ENTRE LOS VALORES PRIMERO Y SEGUNDO DE IMPRESION DE FECHA Y HORA, EN LA POSICION (A/B) DE CUALQUIERA DE LOS DOS RELOJES PRIMERO O SEGUNDO. ESTE VALOR DE COMPENSACION DE IMPRESION DE FECHA Y HORA ESTA EN FUNCION DE LA DIFERENCIA DE FASE ENTRE LOS DOS RELOJES Y EL RETARDO DE TRANSFERENCIA FIJO (TD). A RESECUENTIAL CELLULAR SYSTEM FOR A RESCUANCING SECTION (RS) THAT HAS TWO INPUTS S1N), COUPLED TO INPUTS (12N) OF A SWITCHING NETWORK (SN2) THROUGH A LINK GROUP (LG) . THE CELLS TRANSMITTED FROM THE INPUTS TO THE OUTPUTS (N2M) OF THE SWITCHING NETWORK ARE ...

Molding process

Detektions-Verfahren und -Vorrichtung

通信设备和通信方法

[问题]提供能够既提高向多个目的地发送帧的通信的可靠性又能够实现有效利用无线通信资源的通信设备和通信方法。[解决方案]通信设备被设置为具有：用于执行帧通信的通信单元。通信单元发送针对送达确认响应帧的送达确认请求帧，所述请求帧包括指定送达确认响应帧的发送频率的频率分配信息，并且基于该频率分配信息，接收已经经历频分多路复用的送达确认响应帧。

フレームリレーデータ交換サービス

(57)【要約】 【課題】メッシュ状のフレームリレーネットワークにお いては、新しいエンドユーザが追加される度に、他のすべ てのエンドユーザに新しいコネクションが必要となり、 すべてのルーティングテーブルの更新が必要となる。 【解決手段】 フレームリレーレイヤ２のデータリンク コネクション識別子（ＤＬＣＩ）が使用され、多様なサ ービス種別、機能セット、閉域接続（ＣＵＧ）の全て又は 幾つかが選択される新しい種別のデータ転送サービスと する。レイヤ３のアドレスが、レイヤ２のフレームから抽 出され、レイヤ３のアドレス情報が使用され、サービスク ラス、機能セット、選択されるＣＵＧの全て又は幾つかに 従い、パケット交換ネットワークを経由しデータパケッ トのルーティングが行われる。送信先において、データパ ケットは、サービスクラス、機能セット、選択されるＣＵ Ｇの全て又は幾つかを示すＤＬＣＩを含むレイヤ２のフ レームにカプセル化される。本発明の態様においては、従 来の相手固定接続（ＰＶＣ）を使用する必要がないの で、ネットワークトラフィックを測定し管理する新しい 方法の提供が可能となる。

通信设备和方法

提出一种设备和方法,其中,发送方将多个要被发送的数据划分成一个或更多数据单元以及接收方通过向该发送方返回确认数据单元来确认正确接收到该数据单元。依照涉及一个或更多自适应参数的流量控制程序,由该发送方发送该数据单元。在发送给定数据单元之后,发送方执行数据丢失检测例程,以及如果发生了触发事件,则执行相应的响应程序,其中这个响应程序包括至少两种用于调整该一个或更多自适应参数的不同模式。优选地,有第一种和第二种模式,其中第一种模式与数据单元的实际丢失有关,因此第一种模式包括传统的数据丢失程序,以及其中第二种模式与发生了过度延迟但没有数据单元丢失的识别有关。

System for reordering elements for reordering part of telecommunication network

FIELD: telecommunications, in particular, equipment for data transmission. SUBSTANCE: reordering part of reordering system (RS) has two inputs (SIn), which are connected to inputs (I2n) of asynchronous switching circuit (SN2) through transmission lines (TLn), which are arranged in line groups (LG). Communication elements which are transmitted from inputs to outputs (N2m) of asynchronous switching circuit are subjected to first time delay and then stored in reordering buffer (R2m) for second time delay before they are sent to device output. Value of second delay conforms to condition that sum of first and second delays is equal to preliminary defined constant value. Size of reordering buffer conforms to condition of difference between said preliminary defined constant value and fixed transmission line delay, which is lowest limit of transmission of any element from input to output. EFFECT: increased phasing precision. 10 cl, 3 dwg РОСС ЬсС ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2142 204‘ 13) Сл Н 041 12/56 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 93052382/09, 11.09.1993 (24) Дата начала действия патента: 17.09.1993 (30) Приоритет: 18.09.1992 ЕР 92202866.7 (46) Дата публикации: 21.11.1999 (56) Ссылки: МО 86/03355 АЛ, 05.06.86. ЕР 0224895 А2, 10.06.87. 4$ 4955016 А, 04.09.90. \МО 91102420 АЛ, 21.02.91. $Ц 650246 А, 28.02.79. (98) Адрес для переписки: 129010, Москва, ул.Б.Спасская, д.25, стр.3, ООО "Городисский и Партнеры", пат.пов. Емельянову Е.И. (71) Заявитель: Алькатель Белл Н.В. (ВЕ) (72) Изобретатель: Анри Альбер Жулиа Верий (ВЕ), Мишель Андре Робер Анрион (ЕК), Мишель Филемон Мадлен Де Соме (ВЕ), Барт Жозеф Жерар Паувелс (ВЕ) (73) Патентообладатель: Алькатель Белл Н.В. (ВЕ) (54) СИСТЕМА ПЕРЕУПОРЯДОЧИВАНИЯ ЭЛЕМЕНТОВ ДЛЯ ПЕРЕУПОРЯДОЧИВАЮЩЕЙ ЧАСТИ ТЕЛЕКОММУНИКАЦИОННОЙ СЕТИ (57) Реферат: Изобретение относится к системе переупорядочивания элементов для переупорядочивающей части телекоммуникационной ...

control bus embodiment apparatus in ATM router by using global bus

본 발명은 RS-485 멀티-드롭(Multi-drop) 방식의 글로벌 버스(Global bus)를 이용하여 ATM 라우터(Router)에 접속되는 각 보드에 대한 모니터링 및 이상유무를 검사할 수 있도록 한 글로벌 버스를 이용한 에이티엠 라우터 내의 콘트롤 버스 구현장치에 관한 것으로, 이러한 본 발명은 ATM 라우터 상에서 53바이트 셀의 패스(Path)를 제공하는 셀 버스와, 글로벌 버스로 구현되어 상기 ATM 라우터에 접속된 각 보드들의 이상유무를 진단 하는 콘트롤 버스와, 상기 콘트롤 버스에 연결되고 글로벌 버스 마스터기능을 수행하는 글로벌 버스 마스터와, 상기 셀 버스에 연결되는 큐비트 프로세서와, 상기 큐비트 프로세서 및 콘트롤 버스에 연결되고 글로벌 버스 상에서 슬라브로 동작하는 보드에 실장되는 프로세서를 포함하여 구성된다. The present invention uses a global bus of the RS-485 multi-drop (drop-drop) global bus (Global bus) to monitor the global bus for each board connected to the ATM router (Router) and check the abnormality The present invention relates to an apparatus for implementing a control bus in an ATM router. The present invention relates to a cell bus providing a path of a 53-byte cell on an ATM router, and an abnormality of each board connected to the ATM router by a global bus. A control bus for diagnosing presence, a global bus master connected to the control bus and performing a global bus master function, a qubit processor connected to the cell bus, a qubit processor and a control bus connected to the global bus It consists of a processor mounted on a board acting as a slab.

Communication apparatus and communication method

提供能够既提高向多个目的地发送帧的通信的可靠性又能够实现有效利用无线通信资源的通信设备和通信方法。[解决方案]通信设备被设置为具有：用于执行帧通信的通信单元。通信单元发送针对送达确认响应帧的送达确认请求帧，所述请求帧包括指定送达确认响应帧的发送频率的频率分配信息，并且基于该频率分配信息，接收已经经历频分多路复用的送达确认响应帧。

Communication control device

Subscriber atm mux for interface to isdn

several input buffers(1) temporarily storing input cells from several input lines, a cell recognition circuit(2) classifying the input cell data according to the QOS of each. Some criteria of the QOS include the connection setting data and header data. The cells are stored in a buffer circuit(3) according to the QOS grade. A ring order data circuit(4) outputs a cell out of the network. A ring order data controller(5) facilitates transfer of data between the cell recognition circuit and from the QOS grade buffer circuit to control the transmission of cell data from the ring order data circuit. A connection state control circuit(6) connects a user interface(7) and a signal processing circuit(8) to the network.

Image communication system

Device and method of processing of elements of data on mode of asynchronous transmission in system of commutation of mode of asynchronous transmission

FIELD: radio engineering. SUBSTANCE: invention can be used in subscriber's switchboard in system of commutation of mode of asynchronous transmission. System of commutation of mode asynchronous transmission has unit of commutation of elements of data having at least one port of switch for sending of asynchronous transmission of elements of data and subscriber's switchboard having collection of subscriber ports. Device processing elements of data used in system of commutation of mode of asynchronous transmission has conversion storage to store controlling information to determine necessity of copying of element of data from port of switch and controller to copy element of data from port of switch and to send copied elements of data to subscriber ports in agreement with controlling information stored in conversion storage. If element of data is element for transmission from one point to another one then system of commutation of mode of asynchronous transmission transforms heading included in element of data in correspondence with controlling information and sends element of data with transformed heading to one subscriber port as minimum. But if element of data is element for transmission from one point to collection of points then system of commutation of mode of asynchronous transmission selects subscriber ports on basis of transformed heading and sends element of data which heading is allotted to selected subscriber ports. EFFECT: provision for sending asynchronous transmission of elements of data copied from one signal source to subscriber ports without interruption of usage of copied elements of data, processing of elements of data when one element of data is sent to one subscriber port on condition that routing information based on transformation with usage of heading is not provided. 13 cl, 7 dwg, 2 tbl УСОУСТС ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2134 024‘ 13) Сл Н 041 12/56 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ ...

Connectionless data processing system

본 발명은 연결설정방식의 비연결형 데이타 처리장치 및 그 방법에 관한 것으로, 특히 비연결형 셀이 입력되면 VCI 값에 따라 헤더변환 및 셀 교환기능을 수행하는 비연결형 셀 교환기(50)와, 상기 비연결형 셀 교환기(50)의 어느 한 포트에 접속되어 단말기(40)에게 목적지 주소와 VPI/VCI값의 매핑 정보를 제공하는 주소처리기(60)와, 컴퓨터 또는 근거리 통신망에서 발생된 비연결형 프레임을 셀화하고 프레임의 목적지 주소값에 따라 매핑된 VCI 값을 맵핑테이블에서 읽어내어 셀헤더에 넣어 비연결형 셀 교환기(50)로 전달하는 다수의 단말수단(30,40)과, 상기 다수의 단말수단(30,40)과 비연결형 셀 교환기(50) 사이를 가상경로(VP:Virtual Path)를 통해 연결해주는 ATM망을 구비하여, 비연결형 데이타를 고속 연결설정 기능 및 설정된 연결의 계속적인 유지기능을 가진 비연결형 셀 교환기로 집중시켜 라우팅 처리함으로써 공중망과 사설망 모두에 적용할 수 있다. The present invention relates to a connectionless data processing device and a method thereof, and more particularly, to a connectionless cell exchanger (50) that performs header conversion and cell switching according to a VCI value when a connectionless cell is input, Cell addressing 60 connected to any port of the connected cell exchanger 50 to provide the terminal 40 with mapping information of the destination address and the VPI / VCI value, and a connectionless frame generated from a computer or a local area network. And a plurality of terminal means (30, 40) for reading the VCI value mapped in accordance with the destination address value of the frame from the mapping table and putting it in the cell header to the connectionless cell exchanger (50), and the plurality of terminal means (30). 40) and the ATM network for connecting the non-connected cell exchanger 50 through a virtual path (VP), and have a high-speed connection establishment function and a continuous maintenance function of the established connection. It can be applied to both public and private networks by concentrating routing to connectionless cell switch.

Path designation switch for digital signal two-way transmission

(57)【要約】 （修正有） 【課題】 ＡＴＭスイッチおよびシステムにとくに応用 できる経路指定スイッチを改良する。 【解決手段】 入力ポートおよび出力ポートに選択的に 接続できるバッファ回路と、入出力ポート間の選択的接 続を決定する制御回路３９，４０，４１を有し、制御回 路は、制御ビットを持つデジタル信号のデータセルを各 々含むビットフレームを備えるメッセージプロトコルを 動作させ、かつ、各入力セルの制御ビットから（ｉ）ど の１つの出力ポートまたは複数の出力ポートをそのセル のために使用するかの経路識別子と、（ｉｉ）選択され た出力ポートにおいてどの待ち行列が求められるか、 （ｉｉｉ）ビットフレーム源における輻輳を指示する任 意の流れ制御指示を行う。

Multi-packet transport structure and method for sending network data over satellite network

A method for encoding network data, such as Internet Protocol (IP) data, into a format for transmission over a satellite system is described. The network data is configured in a packet having a data block and header information. The network data packet is encoded into a variable-length multi-packet transport (MPT) frame. The MPT frame comprises a data frame to hold data and header information. The IP packet in inserted its entirety into the data frame of the MPT frame. The variable-length MTP frame is then encoded into one or more fixed-length MTP packets. Each MPT packet has a data fragment block comprising a portion of the MTP frame and associated header information to designate what portion of the MTP frame is contained in the data fragment block. The MPT packets are sized to be embedded as a specific size payload of the satellite packet that is transmitted over a satellite network. Using this method, data received over a data network (i.e., Ethernet or Internet) in large network data packets are broken into smaller packets defined by the multi-packet transport. These smaller packets are then inserted as the data payload within standard fixed-size packets suitable for transmission across a particular distribution medium, such as satellite network. The network data remains independent of the underlying network and can be easily extracted at the receiver for use by computer applications.

Apparatus and method for transmitting IP data through a satellite network

Communication method

송신기가 송신될 데이터의 양을 하나 이상의 데이터 유닛으로 분할하며 수신기가 확인 데이터 유닛을 상기 송신기로 귀환시킴으로써 데이터 유닛의 정확한 수신을 확인하는 방법 및 장치가 제안된다. 데이터 유닛은 하나 이상의 적응형 파라미터를 포함하는 흐름 제어 절차에 따라서 상기 송신기에 의해 송신된다. 제공된 데이터 유닛이 송신된 이후에, 송신기가 데이터 손실 검출 루틴을 수행하여 트리거링 이벤트가 발생된 경우, 대응 응답 절차가 수행되며, 여기서 이 응답 절차는 상기 하나 이상의 적응형 파라미터를 적응시키기 위한 둘 이상의 상이한 모드를 포함한다. 바람직하게, 제 1 및 제 2 모드가 있으며, 여기서 제 1 모드는 데이터 유닛의 실제 손실과 관련되어 이 제 1 모드는 종래의 데이터 손실 절차를 포함하고, 제 2 모드는 데이터 손실이 아니라 과도한 지연이 발생되었다는 인식과 관련된다. A method and apparatus are proposed in which the transmitter divides the amount of data to be transmitted into one or more data units and the receiver confirms the correct reception of the data unit by returning an acknowledgment data unit to the transmitter. The data unit is transmitted by the transmitter in accordance with a flow control procedure including one or more adaptive parameters. After the provided data unit is transmitted, a corresponding response procedure is performed if the transmitter performs a data loss detection routine to generate a triggering event, where the response procedure is performed by two or more different parameters for adapting the one or more adaptive parameters. Includes a mode. Preferably, there are first and second modes, where the first mode is related to the actual loss of the data unit, and this first mode comprises a conventional data loss procedure, and the second mode is not a data loss but rather an excessive delay. It is related to the recognition that it occurred.

Atm layer receiving operation and maintenance cell processing apparatus

본 발명은 비동기 전달 모드(ATM)계층 수신 운용 및 유지 보수(OAM) 셀 처리 장치에 관한 것으로서, 수신된 사용자 셀의 헤더로부터 채널 인식자(VPI/VCI), 셀의 페이로드에 대한 BIP-16값, 셀 헤더의 셀손실 우선 순위(CLP)값, 연결 인식자를 추출하여 출력하는 수신 사용자 셀 감시 수단(1); 입력된 셀 데이타의 CRC 검사를 수행하는 CRC 검사 수단(2); 상기 CRC 검사 수단(2)으로부터 수신된 OAM 셀의 OAM 타잎과 기능타잎 만를 참고하여 각종 OAM 셀을 분리하여 출력하는 OAM 셀 분리 수단(3); 메타신호 셀을 입력받아 별도의 처리없이 출력하는 메타신호 셀 처리 수단(6); 활성/비활성 셀을 입력받아 별도의 처리없이 출력하는 활성/비활성 셀 처리 수단(7); 자원관리 셀을 입력받아 별도의 처리없이 출력하는 자원관리 셀 처리 수단(8); 시스템 관리 셀을 입력받아 별도의 처리없이 출력하는 시스템 관리 셀 처리 수단(9); CPU와 정합기능을 수행하는 CPU 접속 수단(11); 상기 각 셀 처리부로 부터 셀 단위의 데이타를 저장하는 OAM 셀 메모리 수단(10); 경보셀을 입력받아 처리하는 경보 셀 처리 수단(20); 사용자 셀 또는 연속성 검사 셀이 수신되는 지를 파악하여 출력하는 연속성 검사 셀 처리 수단(30); 루프백 셀을 입력받아 발신처 인식자 및 루프백 위치 인식자를 검사하여 출력하는 루프백 셀 처리 수단(40); 및 순방향 감시셀과 역방향 보고 셀을 입력받아 성능 누적 정보를 저장하여 출력하는 성능관리 셀 처리 수단(5)을 구비하여 UNI/NNI에 적용되는 F4/F5 레벨의 ATM계층 OAM셀 중 실시간 처리가 요구되는 성능 관리 셀, 장애 관리 셀을 처리하는 기능 및 실시간 처리가 요구되지 않는 ATM 계층의 셀들인 활성/비활성 셀 및 자원관리 셀, 시스템 관리 셀, 메타신호 셀의 경우 CRC-10, CRC-32 검사를 수행한 후 유효 셀만을 OAM 셀 메모리를 통하여 CPU에 전달하는 기능을 제공할 수 있는 구조로서 효율적으로 ATM 계층의 OAM 셀을 처리할 수 있는 효과가 있다. The present invention relates to an asynchronous delivery mode (ATM) layer reception operation and maintenance (OAM) cell processing apparatus, and the BIP-16 for the channel identifier (VPI / VCI), the cell payload from the header of the received user cell Receiving user cell monitoring means (1) for extracting and outputting a value, a cell loss priority (CLP) value of a cell header, and a connection identifier; CRC checking means (2) for performing CRC checking of the input cell data; OAM cell separation means (3) for separating and outputting various OAM cells with reference to only the OAM type and functional type of the OAM cell received from the CRC checking means (2); Meta-signal cell processing means (6) for receiving the meta-signal cell and outputting it without any further processing; Active / inactive cell processing means (7) for receiving active / inactive cells and outputting them without further processing; A resource management ...

Train-to-train communication based preceding train discovery and the integrity checking method

본 발명은 열차간 통신기반 열차제어시스템의 선행열차 탐색 및 무결성 확인방법에 관한 것으로; 선행열차와 후행열차간 direct-path 형태의 직접적인 제어경로를 통해 열차의 안전한 간격을 제어하는 열차간 연결기반 열차자율주행제어시스템에서의 선행 열차의 탐색 및 선행 열차의 위치 정보 무결성 검증을 통해 열차 스스로 주변의 열차 운행 상황을 인지하고 안전 운행을 할 수 있도록 하는 열차간 통신기반 열차제어시스템의 선행열차 탐색 및 무결성 확인방법을 제공한다. 본 발명은 운행열차의 차상 ATP로 지상 ATS의 임무시작 명령이 수신되면 사전에 저장된 영업 노선의 멀티캐스트 주소를 이용하여 해당 영업 노선에 존재하는 모든 주행열차 및 관제용 ATS에게 통신그룹 등록을 요청하는 GS(Group Solicitation)메시지를 멀티캐스트로 전송하는 제1단계; 상기 운행열차의 차상 ATP는 상기 주행열차로부터 통신그룹 등록을 수락하는 GA(Group Advertisement)메시지가 유니캐스트로 수신되면 통신그룹 완료 상태로 전환하는 제2단계; 상기 운행열차의 차상ATP는 자신의 위치를 상기 주행열차로 전송하고, 상기 주행열차가 전송한 PR 메시지가 수신되면 주행열차의 위치와 진행방향, 진행경로를 포함하는 운행정보를 수집하여 자신의 차상ATP의 운행DB에 갱신하는 제3단계; 상기 운행열차의 차상ATP는 상기 운행DB를 갱신시 자신의 지도에 상기 주행열차의 위치를 매핑하고 자신과 지리적으로 가까운 선행열차를 탐색 및 결정하는 제4단계; 및 상기 운행열차의 차상 ATP는 D2D(Device to Device)를 이용하여 자신의 위치로부터 일정 전파범위(Radio Coverage)(RC) 안에 열차가 존재하는지 확인하여 자신의 운행DB 중 선행열차와 주변열차 정보의 무결성을 확인하는 제5단계;를 포함하여 구성되는 것을 특징으로 한다. The present invention relates to a preceding train search and an integrity checking method in a train-to-rail communication-based train control system. In the train-based autonomous train control system, the trains are traced through the direct-path-type direct control path between the preceding train and the trailing train, The present invention provides a method of searching for an upcoming train and confirming the integrity of a train-based communication control system that enables a train operation to be recognized and operated in a safe manner. The present invention requests registration of a communication group to all traveling trains and control ATS existing on the corresponding sales route by using the multicast address of the previously stored business route when the start command of the ground ATS is received by the on-board ATP of the service train A first step of multicasting a Group Solicitation (GS) message; A second step of switching to a communication group complete state when a Group Advertisement (GA) message accepting a communication group ...

Data packet reordering device for high-speed data switch

Method for transmitting message of communication system supporting ofdm/ofdma

A message transmission method for a communication system supporting OFDM/OFDMA methods is provided to know the capability of each terminal in an initial network entrance stage, thereby efficiently using scheduling and radio resources. A message transmission method for a communication system supporting OFDM/OFDMA(Orthogonal Frequency Division Multiplexing/Orthogonal Frequency Division Multiplexing Access) methods comprises the following steps of: transmitting a UCD(Uplink Channel Descriptor) message including ranging code information which indicates the support of basic terminal capability from a BS(Base Station)(S701); and transmitting uplink/downlink messages to a terminal through one of PUSC(Partial Usage of SubChannels), FUSC(Full Usage of SubChannels), or band AMC(Adaptive Modulation and Coding) regions on the basis of the ranging code information(S704~S720).

Cell-discarding method

(57)【要約】 【課題】 ＡＴＭＮＩＣがリアルタイムに動作してい る間に、再編成バッファにオーバーフローが発生する場 合に受取ったＡＴＭセルを取り捨ててＱＯＳを向上させ るるＡＴＭセル取捨て方法を提供する。 【解決手段】 複数のエントリよりなる、フリーバッ ファリングをセットアップし、リアルタイムサービスを 要するセルが入力されると、フリーバッファリング内に 存在するヘッドポインタの値とテールポイントの値とを 比較して、一致しないと、テールポインタが指すバッフ ァに受け取ったセルを格納し、そうでないと、ヘッドポ インタの値を１だけ増加させ、最初に受け取ったセルは 取り捨て、最後に受け取ったセルはテールポインタが指 すバッファに格納し、テールポインタの値を１だけ増加 させる。

Adaptive connection admission control method using traffic measurement and conferring

본 발명은 서비스중인 실제 트래픽을 측정 및 추정하는 적응적 연결 수락 제어 방법에 관한 것으로, 연결 설정 단계에서는 사용자가 선언한 트래픽 파라미터중 가장 정확한 최대 셀 전송 속도만 이용하여 연결의 수락 여부를 결정하고, 평균 셀 전송 속도는 측정 및 추정 메카니즘을 통해 계산하는 트래픽 측정 및 추정에 의한 적응적 연결 수락 제어 방법을 제공하기 위하여, 평균 셀 전송 속도의 추정치를 입력으로 하여 연결의 수락 여부를 결정하는 제1단계(100 내지 105); 연결 해제 요구 신호를 입력받으면 연결 갯수를 감소시키는 제2단계(106,107); 및 측정 구간이 종료되면 출력 링크를 통과하는 전체 연결들의 평균 셀 전송 속도의 측정치를 계산한 후에 개별적인 연결의 평균 셀 전송 속도의 측정치를 계산한 후에 개별적인 연결의 평균 셀 전송 속도의 추정치를 계산하는 제3단계(108 내지 112)를 포함하여 대역 사용의 효율성을 향상시키고, 트래픽 변동에 정확하고 유연하게 대응할 수 있는 효과가 있다. The present invention relates to an adaptive connection admission control method for measuring and estimating actual traffic in service, and in the connection establishment step, determining whether to accept a connection using only the most accurate maximum cell transmission rate among the traffic parameters declared by the user, A first step of determining whether to accept a connection by inputting an estimate of the average cell rate in order to provide an adaptive connection admission control method by measuring and estimating the average cell rate through a measurement and estimation mechanism. (100 to 105); A second step (106, 107) of reducing the number of connections upon receiving a connection release request signal; And calculating a measure of the average cell rate of all connections across the output link at the end of the measurement interval, then calculating a measure of the average cell rate of the individual connections and then calculating an estimate of the average cell rate of the individual connections. Including three steps (108 to 112) to improve the efficiency of the use of the band, there is an effect that can respond accurately and flexibly to traffic fluctuations.

System and method for providing statistics for flexible billing in a cable environment

A system for providing flexible billing in a cable environment can establish billing practices based on tier level of service, quality of service or the amount of network resources consumed. A plurality of tiers or levels of service can be defined by parameters including at least a maximum or peak bit rate or bandwidth for providing services over a shared channel. A plurality of levels or tiers of services are defined by maximum bandwidth or bit rate and a subscriber receives service at that subscribe-to level or at a slower data rate depending on availability of shared bandwidth. Quality of service is maintaining the specified bandwidth, jitter or delay. The amount of network resources consumed may be expressed in terms of the amount of data transmitted or the connect time of a network access device to the network.

Method of discarding atm cells in an atm nic

본 발명은 ATM 망접속기(NIC:Network Interface Card)에서 실시간 연결시 재조립 버퍼에 오버플로우(overflow)가 발생될 경우에 수신된 ATM 셀(Cell)을 폐기(discard)하는 방법에 관한 것이다. The present invention relates to a method of discarding a received ATM cell when an overflow occurs in the reassembly buffer during a real time connection in an ATM network interface card (NIC). 이러한 본 발명은 호스트시스템에서 운용되는 응용프로그램의 요구에 따라 ATM 망접속기 드라이버가 ATM 망접속기를 제어하여 데이터를 ATM 통신방식으로 전송하고, ATM 망접속기가 수신된 ATM 셀들을 프리버퍼 링의 엔트리가 가리키는 재조립 버퍼에 저장하여 패킷을 재조립하는 ATM 망접속기에 있어서, 헤드 포인터와 테일 포인터에 의해 저장될 셀들의 버퍼를 지시하는 엔트리들로 구성된 실시간 연결을 위한 프리버퍼 링을 설정하는 단계(100); 실시간 연결에 해당하는 패킷들의 셀이 수신되면 실시간 연결을 관리하기 위한 프리버퍼 링의 헤드 포인터와 테일 포인터를 비교하는 단계(101,102); 헤드 포인터와 테일 포인터가 일치하지 않으면 수신된 셀을 테일 포인터가 가리키는 버퍼에 저장하는 단계(104); 헤드 포인터와 테일 포인터가 일치하면 헤드 포인터 값을 1증가시켜 가장 오래된 셀을 폐기한 후, 수신된 셀을 테일 포인터가 가리키는 버퍼에 저장하는 단계(103,104); 및 테일 포인터값을 1증가시키는 단계(105)로 구성된다. According to the present invention, the ATM network connector driver controls the ATM network connector in accordance with the request of an application program operating in the host system, and transmits data in an ATM communication method. In an ATM network accessor for reassembling a packet by storing in a reassembly buffer that is indicated, setting up a prebuffer ring for a real-time connection consisting of entries indicating a buffer of cells to be stored by a head pointer and a tail pointer (100). ); Comparing (101, 102) a head pointer and a tail pointer of a prebuffer ring for managing a real-time connection when a cell of packets corresponding to the real-time connection is received; If the head pointer and tail pointer do not match, storing the received cell in a buffer pointed to by the tail pointer (104); If the head pointer and tail pointer coincide, increasing the head pointer value by 1 to discard the oldest cell, and then storing the received cells in a buffer indicated by the tail pointer (103, 104); And incrementing the tail pointer value by one (105).

Multicasting method and operation using

본 발명은 멀티캐스팅 시스템 구조 및 그 운용방법에 관한 것으로서, 하나의 ATM 프로토콜 처리기를 사용하여 한 셀 시간 내에 셀 헤드를 연속으로 N번 비교 변환하고 연결 테이블의 연결 설정 결과를 이용하여 셀 복사 유무를 바로 결정할 수 있도록 하여 셀의 헤드를 변환하는 과정을 통하여 바로 셀을 복사하고, 각 포트마다 다른 헤드 값을 갖도록 하는 방법을 사용한 라인 접속 카드를 스위치의 입출력 카드로 사용하는 즉, 스위치에 연결된 라인 카드들이 동일한 ATM 계층 프로토콜 처리기를 사용하고, 헤드 변환 장치만을 수정하여 하나의 ATM 프로토콜 처리기에 연결된 다중의 물리계층 포트들을 갖는 스위치 시스템에서 셀을 멀티캐스팅하는 방법을 제안하고, 다중의 물리 계층이 접속된 ATM 계층 프로토콜 처리기에서 처리해야 할 OAM 및 신호 셀 처리를 위한 테이블 운용방법을 제안함으로써, 스위치에 연결되는 다양한 라인 카드들이 동일한 ATM 프로토콜 처리기를 사용하고, 각 보드마다 동일한 연결 비교 변환 지연 특성을 가지면서 포트 수를 증가시켜 각 가입자들이 시스템에서 제공하는 멀티캐스팅 서비스의 다양한 서비스를 제공받을 수 있으며, 제안한 연결 테이블 제어방법을 통하여 하나의 ATM 프로토콜 처리기의 OAM 및 신호 처리 창구를 이용하여 각 포트들이 신호 및 OAM 셀을 구분하여 송수신할 수 있는 효과를 가진다. The present invention relates to a structure of a multicasting system and a method of operating the same, wherein a single ATM protocol processor is used to compare and convert the cell heads consecutively N times within one cell time, and to check whether there is a copy of a cell using a connection establishment result of a connection table. The line card connected to the switch is used as the input / output card of the switch, which uses the method of directly copying the cell through the process of converting the head of the cell and having a different head value for each port. Proposes a method of multicasting a cell in a switch system having multiple physical layer ports connected to a single ATM protocol processor by using the same ATM layer protocol processor and modifying only the head converting device. OAM and signal cell processing to be handled by the ATM layer protocol handler By proposing a table operation method, multi-casting provided by each subscriber in the system by increasing the number of ports while using the same ATM protocol processor for the various line cards connected to the switch and having the same connection comparison conversion delay characteristics for each board Various services of the service can be provided, and through the proposed connection table control ...

A method of providing qos and bandwith allocation in a point to multi-point network

An upstream bandwidth allocation scheduler is provided for use within a Line Termination (LT) unit (102) in a point to multi-point data communications network (100) in order to service multiple Network Termination (NT) units (104) . The scheduler first allocates bandwidth among the several categories of data handled by the network (e.g., voice, IP, and ATM data), and then allocates bandwidth among the several users for each category within the network (100) . A function f is defined, as part of a 'min-max weighted fairness' scheme, in order to allocate surplus bandwidth among both the categories and users of the network. The scheduler of the present invention, while allocating upstream bandwidth, also supports various quality of service (QoS) categories to subscribers of the network.

Low delay or low loss switch for ATM

Apparatus and Method for seamless transmitting/receiving contents in Broadcast Multicast Service system

BCMCS 서비스 시스템에서 끊김 없는 방송 컨텐츠를 송수신하는 장치 및 방법이 개시된다. 이를 위한 BCMCS(Broadcast Multicast service) 서비스 시스템에서 단말이 끊김 없이 방송 컨텐츠 수신하는 방법의 일 예는, 상기 방송 컨텐츠에 대한 망 식별 정보를 포함한 방송 스케줄링 정보를 수신하는 단계와, 오버헤드 메시지를 통해 상기 단말이 속한 망 식별 정보를 주기적으로 수신하는 단계와, 상기 방송 컨텐츠의 망 식별 정보와 상기 단말이 속한 망 식별 정보가 일치하지 않을 경우, 유니캐스트 망을 통해 상기 방송 컨텐츠를 다운로드 받는 단계를 포함하여, 복구 조건에 상관없이 서비스 권역 외에 존재하는 단말에 대해 유니캐스트 망을 통해 끊임 없는 방송 컨텐츠를 송수신함으로써, 서비스 가입자에게 신뢰성 있는 방송 서비스를 제공할 수 있다. An apparatus and method for transmitting and receiving seamless broadcast contents in a BCMCS service system are disclosed. One example of a method for receiving broadcast contents seamlessly in a BCMCS service system includes receiving broadcast scheduling information including network identification information for the broadcast contents, The method comprising the steps of: periodically receiving network identification information to which a terminal belongs; and downloading the broadcast content through a unicast network when network identification information of the broadcast content does not match network identification information of the terminal, , It is possible to provide a reliable broadcast service to a service subscriber by transmitting and receiving the continuous broadcast contents through the unicast network to the terminals existing outside the service area regardless of the recovery condition.

Data output buffer control apparatus in atm switch

본 발명은 비동기식 전송모드 교환기의 데이타출력버퍼 제어장치에 관한 것으로, 데이타 출력버퍼에 임계치를 복수개 두어 버퍼에서 대기중인 셀의 양에 따라 입력가능한 저우선순위 셀의 수를 유동적으로 조절해 줌으로써 시간적으로 불확실한 변동을 가지는 트래픽에 대해 고우선순위 셀이 돌발적으로 폐기되는 확률을 현저히 감소시키며, 또한 사용자의 서비스 등급 요구조건을 만족시켜 주기 위해 필요한 데이터 버퍼의 크기를 작게 할 수 있어서 망자원을 경제적으로 이용할 수 있는 장점이 있다. The present invention relates to a data output buffer control apparatus of an asynchronous transfer mode switch, wherein a plurality of thresholds are placed in the data output buffer, and the number of subpriority cells that can be inputted in accordance with the amount of cells waiting in the buffer is controlled in time. It can significantly reduce the probability of accidentally discarding high priority cells for fluctuating traffic, and can reduce the size of the data buffer needed to meet the user's service class requirements. There is an advantage.

Traffic output control and its method for congestion prevention in the atm network

The traffic output suppressing apparatus and method is comprised of an input cell classifying and processing part determining a cell type provided through an extraction of a virtual connection identifier of an input cell; in case that the input cell is determined to be a real time process type cell, a real time process type processing part(22) passing the cell as it is or deserting the cell according to a network node state information and an order of priority of a cell damage delivered from an outside; while in case that the input cell is determined to be a standby then process type cell, the input cell being temporarily stored, then passed, or stored and the already stored cell being output by a control instruction provided from a network node state processing part(20) according to the network node state information.

Method and device for exchanging with mixing-type groups

在快速分组交换网中，特殊连接的分组(例如，声音、移动画面)将优先于其它连接的分组(例如，数据)进行处理(无延迟误差和无信息丢失)。根椐本发明，所有的分组在交换中被分成长度相等的小分组并分配给小帧。交换在小帧的基础上发生。延迟和存储位置的需求将帧：小帧的比例减小。将优先处理的连接指定在整个呼叫的每个帧和每个小帧中的固定位置。

Delay monitoring of telecommunication networks

Novel techniques are disclosed for continuously monitoring parameters of delay between two nodes in a telecommunication network such as an ATM or frame relay network. The techniques use measurement cells, i.e. test cells, test frames, performance management ATM OAM cells, or performance management frame relay frames. These cells or frames contain a timestamp indicating the time a cell or frame is sent and a delay value indicating a difference between reception and transmission times of the cell or frame.

Communication device and method

송신기가 송신될 데이터의 양을 하나 이상의 데이터 유닛으로 분할하며 수신기가 확인 데이터 유닛을 상기 송신기로 귀환시킴으로써 데이터 유닛의 정확한 수신을 확인하는 방법 및 장치가 제안된다. 데이터 유닛은 하나 이상의 적응형 파라미터를 포함하는 흐름 제어 절차에 따라서 상기 송신기에 의해 송신된다. 제공된 데이터 유닛이 송신된 이후에, 송신기가 데이터 손실 검출 루틴을 수행하여 트리거링 이벤트가 발생된 경우, 대응 응답 절차가 수행되며, 여기서 이 응답 절차는 상기 하나 이상의 적응형 파라미터를 적응시키기 위한 둘 이상의 상이한 모드를 포함한다. 바람직하게, 제 1 및 제 2 모드가 있으며, 여기서 제 1 모드는 데이터 유닛의 실제 손실과 관련되어 이 제 1 모드는 종래의 데이터 손실 절차를 포함하고, 제 2 모드는 데이터 손실이 아니라 과도한 지연이 발생되었다는 인식과 관련된다.

System and method for scheduling transmission of asynchronous transfer mode cells

A system and method for scheduling the transmission of ATM cells is provided which includes two discrete processors. One processor examines the virtual channels and their traffic parameters, and calculates the times at which cells should be transmitted from each channel. The second processor manages multiple ATM network ports, performs low-level cell handling and the majority of cell switching, and transmits cells when instructed by the first.

Multicast scheduling and replication in switches

A communications switch or router employs a replication server to perform batch processing of multicast connections. The replication server performs three distinct forms of processing using staging queues: packet arrival processing, packet replication processing, and per-interface transmission processing. Packet arrival processing queues arriving packets in session queues, adds new multicast sessions to a replication set, and assigns a counter equivalent to the fan-out of the multicast session. Packet replication processing assigns a descriptor to packets of each session in the replication set, and copies the descriptor to each per-interface queue. Per-interface transmission processing examines each descriptor in the per-interface queue, copies the corresponding packets for transmission by the interface, adjusts the counter as each packet is copied, and clears the packet in the switch based on the adjusted counter.

Architecture for integrated services packet-switched networks

Broadcasting service providing system and method using the point to multi-point connection in ATM network

본 발명은 비동기전송모드(ATM) 교환기를 통해 방송 서비스를 제공하는 시스템에서 동일한 방송 채널을 요구하는 가입자들에게 별도의 영구가상회선을 설정하지 않고 점대다중점 연결을 이용해 ATM 교환기에서 셀 복제하여 방송 프로그램을 제공할 수 있는 방송 서비스 제공 시스템 및 그 방법에 관한 것으로, In the present invention, a system that provides a broadcast service through an asynchronous transfer mode (ATM) exchange does not set up a separate permanent virtual line to subscribers requiring the same broadcast channel, but reproduces a cell by using a point-to-multipoint connection and broadcasting the cell at an ATM exchange. The present invention relates to a broadcast service providing system capable of providing a program, and a method thereof. 본 발명에 따른 방송 서비스 제공 시스템은, 방송 서버와 영구가상회선을 통해 연결되어 있고 점대다중점 연결을 지원하는 비동기전송모드 교환기를 포함하는 방송 서비스 제공 시스템에 있어서, 상기 방송 서버와 상기 비동기전송모드 교환기간에 설정된 방송 서버의 영구가상회선은 동일 채널의 방송신호가 중복 전송되지 않도록 각 채널별로 하나의 영구가상회선이 설정되고, 상기 비동기전송모드 교환기와 가입자간에는 방송용 영구가상회선이 설정되며, 상기 방송용 영구가상회선을 통해 가입자로부터 입력된 방송 채널 선택 메시지를 분석하여, 멀티캐스트 그룹 정보와 가입자 식별 정보를 확인하고, 상기 멀티캐스트 그룹 정보에 대응되는 상기 방송 서버의 영구가상회선 정보가 전달되면 상기 멀티캐스트 그룹 정보와 상기 가입자 식별 정보에 대응되는 가입자의 영구가상회선 정보를 포함하는 연결 설정 또는 연결 해제 요청을 스위칭 모듈 제어수단으로 전송하는 채널 선택 메시지 처리수단; 및 상기 채널 선택 메시지 처리수단으로부터 전달된 멀티캐스트 그룹 정보에 대응되는 상기 방송 서버의 영구가상회선 정보를 검색하여 상기 채널 선택 메시지 처리수단으로 리턴하는 방송채널 관리수단을 포함하는 것을 특징으로 한다. In a broadcast service providing system according to the present invention, a broadcast service providing system including an asynchronous transmission mode switch connected to a broadcast server through a permanent virtual line and supporting a point-to-multipoint connection, the broadcast server and the asynchronous transmission mode In the permanent virtual line of the broadcast server set in the exchange period, one permanent virtual line is set for each channel so that broadcast signals of the same channel are not duplicated, and a broadcast virtual line is set between the asynchronous transmission mode switch and the subscriber. Analyze the broadcast channel selection message input from the subscriber through the broadcast permanent virtual line, confirm ...

Apparatus for processing data unit and method for controlling data unit processing apparatus

Flow control method in ATM switch of distributed configuration

Traffic controller in asynchronous transfer mode switchboard

가.청구범위에 기재된 발명이 속한 기술분야 The technical field to which the invention described in the claims belongs. 비동기 전송모드 교환기에서 트래픽 조정장치에 관한 것이다. A traffic control device in an asynchronous transfer mode exchange. 나.발명이 해결하려고 하는 기술적 과제 B. Technical problem to be solved 비동기 전송모드 교환기의 가입자 보드에서 트래픽을 제어하는 장치를 제공한다. An apparatus for controlling traffic in a subscriber board of an asynchronous transfer mode exchange is provided. 다.발명의 해결방법의 요지 C. Summary of the Solution 본 발명은 비동기 전송모드 교환기의 가입자 보드에서 트래픽 조정장치에 있어서, 상기 비동기 전송모드 교환기의 가입자 모듈로부터 스위치 모듈로 입력되는 셀의 폭주 발생을 인식하여 셀 폭주 발생 및 셀 폭주 상태정보를 출력시키는 셀 폭주 인식부와, 상기 셀 폭주 인식부로부터 출력되는 셀 폭주 발생 및 셀 폭주 상태정보를 입력받으면 상기 가입자 모듈로 입력되는 셀의 입력을 제어하기 위한 셀 데이터 제어정보를 출력시키는 셀 폭주 처리부와, 상기 셀 폭주 처리부로부터의 상기 제어정보를 인가받으면 상기 가입자 모듈로 입력되는 셀이 상기 스위치 모듈로 입력되지 않도록 제어하는 셀 트래픽 제어부를 포함하여 구성함을 특징으로 한다. The present invention relates to a traffic control device in a subscriber board of an asynchronous transmission mode switch, wherein a cell congestion occurrence and cell congestion status information are output by recognizing a congestion occurrence of a cell input from a subscriber module of the asynchronous transmission mode switch to a switch module. A cell congestion processing unit for outputting cell congestion control unit and cell data control information for controlling input of a cell inputted to the subscriber module when receiving the cell congestion generation and cell congestion state information outputted from the cell congestion recognition unit; And a cell traffic controller configured to control a cell inputted to the subscriber module not to be inputted to the switch module when the control information from the cell congestion processing unit is received. 라.발명의 중요한 용도 D. Significant Uses of the Invention 비동기 전송모드 교환기의 가입자 보드에서 트래픽 제어시 이용한다. It is used for traffic control in subscriber board of asynchronous transfer mode switch.

Asynchronous Delivery Mode Hierarchy Processing Unit

본 발명은 기가급 비동기 전담로드 계층 처리 장치에 관한 것으로, 다수의 입력포트로부터 입력되는 ATM 셀을 수신하여 일괄적인 경로설정을 하여 셀 지연시간을 줄이며 정렬기켜 저장하도록 하는 셀 정렬수단; 상기 셀 정렬수단에 의해 정렬된 해당 셀을 저장하는 수신 선입선출수단; ATM 셀 스위칭을 위하여 스위치경로를 설정한 후에 상기 수신선입선출수단으로부터 셀을 읽은 후 스위치를 통하여 셀을 해다 포트로 송신하는 크로스 포인트 스위칭 수단; 상기 수신 선입선출수단이 하나 이상의 셀을 저장하고 있는 경우 상기 수신 선입선출수단으로부터 읽는 동작을 시작하며, VPI/VCI 변환을 수행하는 VPI/VCI 변화수단(Translator); 상기 VPI/VCI 변환수단(Translator)에 연결되어 다수의 입력포트로 수신되는 셀의 출력 포트가 동일한 경우에 이를 해결하는 컨텐션 해소수단(Contention Resolver); 상기 컨텐션 해소수단으로부터 각 셀에 대한 출력 포트를 수신하여 스위치의 경로를 설정하여 상기 수신 선업선출수단 및 크로스 포인트 스위칭 수단으로 제공하는 스위치 제어수단; 상기 크로스 포인트 스위칭 수단으로부터 셀 시작신호를 입력받아 읽기 신호를 전송하는 스위치 수신수단; 상기 스위치 수신수단으로부터 읽기 신호를 수신하면 즉시 셀을 수신하여 저장하는 송신 선입선출수단; 상기 송신 선입선출수단으로부터 데이타가 수신되었음을 알리는 신호를 감지하여 데이타를 읽은 후 인접가능 블럭으로 셀을 송신하는 셀 전송수단을 구비하는 것을 특징으로 한다.

Estimating telecommunications call paths in broadband communication network

본 발명은 원리에 따르면, 펄스 코드 변조(PCM) 신호 스트림은 전기 통신 회로망을 통해 스위칭 및 전송을 위한 비동기 전송 모드(ATM) 셀로 변환된다. 각 셀은 하나의 PCM 샘플을 48개까지의 상이한 음성 접속으로 운반하고, 이때 음성 접속은 이들이 공통 착신국을 가지므로 PCM 데이타 스트림으로부터 선택된다. 셀은 ATM 가상 회선을 통해 전송되고, 각 회선은 매 125μS 마다 한 셀을 전송한다. 다행히, ATM전송 시스템은 인식 가능한 지연이 부가되거나 추가적인 버퍼링이 요구됨이 없이 PCM 시스템과 인터페이스 한다. 새로운 음성 경로들이 현재의 가상 경로의 셀에서 이용가능한 슬롯을 이용함으로써 대부분의 시간동안 설정될 수 있다. 또한 본 발명은 밀접하게 상호 접속된 소형 시스템으로 대규모 스위칭 시스템 또는 클러스터를 구현하는데 이용될 수 있다.

Monitoring network state

一种识别一对网络设备之间的网络状态的方法，其中，所述设备之一包括用于存储经由网络接收的包的抖动缓冲区，所述方法包括以下步骤：监测对通过所述网络接收媒体包时的延迟的量度；监测所述抖动缓冲区的大小；以及根据所述延迟量度的改变和所述抖动缓冲区的大小变化来识别网络状态。

Method and device for controlling memory

메모리에 기록된 디지탈 정보다 다수의 대응한 비트 위치 형태의 이러한 정보가 하나 또는 여러 기능을 제어하도록 이용되기 전에 판독할 수 있게 보정되는 것에 있어서, 이러한 기능의 제어유닛에 의해 활성화 된다. The digital information recorded in the memory is activated by the control unit of this function in that such information in the form of a plurality of corresponding bit positions is corrected to be read before being used to control one or several functions. 제1세트의 비트를 표시하는 저장된 디지탈 정보에 대응하는 메모리 내에서 선택된 어드레스 위치 또는 위치들이 이 기능 및 제어합 역활을 하는 제어세트의 비트를 제어하고/또는 초기화하는데 필요하고 제 2 세트의 비트는 제 1 세트의 비트에 대응하는 현재 세트의 비트와 판독을 위해 현재 선택된 어드레스 위치에 대응하는 제3세트의 비트를 고려하여 산술된다. 메모리로 부터의 디지털 정보의 추종 판독이 수행될때 새로운 제어합이 제 5 세트의 비트를 형성하기 위해 판독을 위해 현재 선택된 어드레스 위치에 대응하는 제 4 세트의 비트와 제 1 세트의 비트에 해당하는 현재 판독된 비트 위치를 고려하여 같은 방식으로 산출된다. 비교가 수행될때 판독 디지탈 정보가 보정으로 얻어지고 일치가 제 2 세트 비트와 제 5 세트 비트 사이에서 발견된다. The selected address location or locations in memory corresponding to the stored digital information indicative of the first set of bits are needed to control and / or initialize the bits of the control set that serve this function and control sum and the second set of bits It is arithmetic considering the bits of the current set corresponding to the first set of bits and the third set of bits corresponding to the address position currently selected for reading. When a follow-up read of digital information from the memory is performed, a new control sum is present to correspond to the fourth set of bits and the first set of bits corresponding to the address location currently selected for reading to form a fifth set of bits. It is calculated in the same manner taking into account the read bit position. When the comparison is performed, read digital information is obtained with correction and a match is found between the second set bit and the fifth set bit.

Cell disassembly device

Error detection and correction method and apparatus in ATM cell header

Descrambler of the cell based parallel atm physical layer

The circuit for processing the transmitted data with parallel 8 bit by using ordinary semiconductor element includes a line matching circuit(11) sampling the clock and receiving data, a processor(12) determining the cell boundary after calculating the syndrome with HEC code, a DSS demultiplexer(13) demultiplexing the input data, a cell processor(14) transferring the ATM cell layer, and an processor maintaining the OAM cell separated by the processor(14).

Transmission equipment

Apparatus for inserting gfc bit in atm cell

본 발명은 피지컬 레벨(Phisical Level)에서 ATM 셀(Asynchronous Transfer Mode Cell)에 GFC(Generic Flow Control) 비트를 삽입하여 현재 통신망의 상태를 점검할 수 있도록 하는 ATM 셀에 GFC 비트를 삽입하기 위한 장치에 관한 것이다. The present invention relates to an apparatus for inserting a GFC bit in an ATM cell to insert a GFC (Generic Flow Control) bit into an ATM cell (Asynchronous Transfer Mode Cell) at a physical level to check the status of the current network. It is about. 본 발명은 ATM 셀의 헤더의 처음 바이트의 상위 4비트에 현재 통신망의 상태를 나타내는 GFC 비트를 삽입한다. The present invention inserts a GFC bit representing the state of the current communication network into the upper four bits of the first byte of the header of the ATM cell. 따라서 본 발명은 ATM 셀에 통신망의 상태를 나타내는 GFC 비트를 삽입하므로 현재 통신망의 상태를 점검하고 관리하기가 용이해진다. Therefore, the present invention inserts a GFC bit indicating the state of a communication network into an ATM cell, thereby facilitating checking and managing the state of the current communication network.

Cell transmission switch call connection control device

Method for control of information flow in integral service digital telecommunication system in wide range and wide-range integral service digital telecommunication system

FIELD: communication. SUBSTANCE: for each terminal 2-9 method involves continuation of transmission of data elements after successful transmission of first element, waiting for acknowledgment of reception of this element, limiting number of sent elements during waiting represented as W, suspending transmission of elements during given period T r if reception has not been acknowledged before current end of transmission of elements, transmission of new first element, if corresponding acknowledgment has not been received during period T r and releasing communication line which services this terminal if acknowledgment has not been received after given period T max which is measured starting from first transmission of first element. Said values W, T r , T max of current service type are given for each terminal. For network 1 control method in overflow case involves setting parameters W, T r , T max for each connection, depending on service type for this connection, delaying sequence of elements which are transmitted in each connection in series by time which is less than T max , removing element and other identical elements which are sent by connection which is limited to corresponding loss of element by level below T max . EFFECT: increased functional capabilities. 2 cl, 2 dwg ООО гс ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2107 400 ' 13) Сл н 04 м 3/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 4831742109, 26.11.1990 (30) Приоритет: 27.11.1989 ЕК 8915551 (46) Дата публикации: 20.03.1998 (56) Ссылки: СоттШщаНоп & Тгапзаптизюп М 4, 1986, Раг$, с.39-48. (71) Заявитель: Алькатель Н.В. (МГ) (72) Изобретатель: Баман Мобассер[ЕК] (73) Патентообладатель: Алькатель Н.В. (МГ) (54) СПОСОБ УПРАВЛЕНИЯ ПОТОКОМ ИНФОРМАЦИИ В ЦИФРОВОЙ ТЕЛЕКОММУНИКАЦИОННОЙ СЕТИ ИНТЕГРАЛЬНОГО ОБСЛУЖИВАНИЯ В ШИРОКОМ ДИАПАЗОНЕ И ШИРОКОДИАПАЗОННАЯ ЦИФРОВАЯ ТЕЛЕКОММУНИКАЦИОННАЯ СЕТЬ ИНТЕГРАЛЬНОГО ОБСЛУЖИВАНИЯ (57) Реферат: Способ заключается в ...

Packet communication system and time slot allocation control method used therefor

Traffic output suppressing device and method

Multiple connection network

내용 없음

Train-to-train communication based preceding train discovery and the integrity checking method

본 발명은 열차간 통신기반 열차제어시스템의 선행열차 탐색 및 무결성 확인방법에 관한 것으로; 선행열차와 후행열차간 direct-path 형태의 직접적인 제어경로를 통해 열차의 안전한 간격을 제어하는 열차간 연결기반 열차자율주행제어시스템에서의 선행 열차의 탐색 및 선행 열차의 위치 정보 무결성 검증을 통해 열차 스스로 주변의 열차 운행 상황을 인지하고 안전 운행을 할 수 있도록 하는 열차간 통신기반 열차제어시스템의 선행열차 탐색 및 무결성 확인방법을 제공한다. 본 발명은 운행열차의 차상 ATP로 지상 ATS의 임무시작 명령이 수신되면 사전에 저장된 영업 노선의 멀티캐스트 주소를 이용하여 해당 영업 노선에 존재하는 모든 주행열차 및 관제용 ATS에게 통신그룹 등록을 요청하는 GS(Group Solicitation)메시지를 멀티캐스트로 전송하는 제1단계; 상기 운행열차의 차상 ATP는 상기 주행열차로부터 통신그룹 등록을 수락하는 GA(Group Advertisement)메시지가 유니캐스트로 수신되면 통신그룹 완료 상태로 전환하는 제2단계; 상기 운행열차의 차상ATP는 자신의 위치를 상기 주행열차로 전송하고, 상기 주행열차가 전송한 PR 메시지가 수신되면 주행열차의 위치와 진행방향, 진행경로를 포함하는 운행정보를 수집하여 자신의 차상ATP의 운행DB에 갱신하는 제3단계; 상기 운행열차의 차상ATP는 상기 운행DB를 갱신시 자신의 지도에 상기 주행열차의 위치를 매핑하고 자신과 지리적으로 가까운 선행열차를 탐색 및 결정하는 제4단계; 및 상기 운행열차의 차상 ATP는 D2D(Device to Device)를 이용하여 자신의 위치로부터 일정 전파범위(Radio Coverage)(RC) 안에 열차가 존재하는지 확인하여 자신의 운행DB 중 선행열차와 주변열차 정보의 무결성을 확인하는 제5단계;를 포함하여 구성되는 것을 특징으로 한다.

METHOD FOR SYNCHRONIZING DATA TRANSFER WITH CONSTANT DIGITAL SPEED IN NETWORKS WITH ASYNCHRONOUS TRANSMISSION MODE AND DEVICE FOR PERFORMING THE METHOD

Apparatus and Method for Subscriber Board Traffic Control in ATM System

본 발명은 ATM 시스템의 가입자 보드 트래픽 제어에 관한 것이다. 종래 ATM 시스템의 가입자 보드에서는 프레이머에 장애가 발생하여 장애가 발생한 프레이머에 연결된 물리계층 FIFO에서 ATM 셀이 출력되지 못하고 있는 경우 외부 FIFO에서 해당 물리계층 FIFO로 출력되는 셀이 막히게 되어 연이어 입력되는 정상적인 물리계층 FIFO로 가는 ATM 셀들도 막히게 되는 문제점이 있었다. The present invention relates to subscriber board traffic control in an ATM system. In the subscriber board of the conventional ATM system, if an ATM cell is not output from the physical layer FIFO connected to the failed framer due to a failure of the framer, the cells output from the external FIFO to the corresponding physical layer FIFO are blocked so that the normal physical layer FIFO is successively input. There was a problem that even ATM cells going to be blocked. 본 발명에서는 ATM 시스템의 가입자 보드에서 망동기 블록의 전송 기준 클럭을 카운트하여 프레이머의 장애 여부를 판별하게 함으로써, 장애가 발생한 프레이머에 연결된 물리계층 FIFO로 출력되는 ATM 셀을 외부 FIFO에서 폐기하게 하고, 또한 이를 통해 정상적인 물리계층 FIFO로 출력되는 ATM 셀의 트래픽을 원활하게 처리하게 한다. In the present invention, by determining the failure of the framer by counting the transmission reference clock of the network synchronizer block in the subscriber board of the ATM system, the ATM cell outputted to the physical layer FIFO connected to the failed framer is discarded from the external FIFO. This smoothly handles the traffic of ATM cells output to normal physical layer FIFOs.

LMD's Headend System Using Broadband-CDM

본 발명은 광대역-CDMA(W-CDMA) 방식을 이용한 엘엠디에스(LMDS)에 있어서, CATV 방송국내에 위치하는 LMDS의 헤드앤드(Headend) 시스템을 구현하여 쌍방향 CATV, 위성방송, 주문형 요구 비디오(VOD), 인터넷(Internet), 전화 등의 무선 LMDS 디지털 서비스를 수행할 수 있도록 한 W-CDMA 방식을 이용한 LMDS의 헤드앤드 시스템에 관한 것으로, 송신부에서 ATM 스위치를 통해 ATM 처리된 CATV, 위성방송, VOD, 인터넷, 전화 등의 ATM 데이터를 W-CDMA 기저대역처리하고 QAM 변조한 후 28GHz 주파수 대역의 RF 신호로 변환하여 각 셀 사이트로 전송하도록 하고, 반대로 셀 사이트에서 CATV, 위성방송, VOD, 인터넷, 전화 등의 ATM 데이터가 전송되는 경우에는 수신부에서 상기 ATM 데이터를 950∼2050MHz의 IF 신호로 변환하고 QPSK 복조한 후-CDMA 기저대역처리를 통해 상기 ATM 데이터를 추출하여 ATM 스위치로 전송하도록 함을 특징으로 한다. The present invention implements a headend system of an LMDS located in a CATV broadcasting station in an LMDS using a wideband-CDMA (W-CDMA) scheme to provide interactive CATV, satellite broadcasting, and video on demand. The head-end system of LMDS using W-CDMA method which can perform wireless LMDS digital service such as VOD), Internet, telephone, etc. W-CDMA baseband processing, QAM modulation of ATM data such as VOD, Internet, telephone, etc., converted to RF signal of 28GHz frequency band for transmission to each cell site, and on the contrary, CATV, satellite broadcasting, VOD, Internet at cell site When ATM data such as a telephone or the like is transmitted, a receiver converts the ATM data into an IF signal of 950 to 2050 MHz, QPSK demodulates it, and extracts the ATM data through CDMA baseband processing. It characterized in that the transmission to.

Terabit class packet exchange apparatus and method

물리적으로 실현가능한 1 Tbps 혹은 그 이상의 ATM 패킷교환기(10A)로서, 다수의 입력인터페이스가 단일 단계의 교환구조(14A)로 접속되고, 이 교환구조는 다수의 출력모듈(16 0 -16 m )으로 접속되는 구조를 가지고 있는 일반적인 성장가능한 패킷교환기 구조가 기술된다. 이 ATM 패킷교환기는 다른 성장가능한 패킷교환기에 비해 아웃밴드제어기(20)에 의해 제어되는 단일단계의 교환구조(14A 혹은 14B)를 포함하고 있으며, 비슷한 용량의 전기적인 크로스바 교환기나 그 동형에 비해 상대적으로 회로구성이 현저히 간단하다. 이 ATM 패킷교환기 구조는 매우 유연하여 동일한 교환구조와 아웃밴드제어기의 구조를 사용하여 가변장 패킷이나, 회선교환접속, 폴트 톨러런트 용장 회로를 제공하는데 까지 확장될 수 있다.

Data switching method and apparatus

A data switch for handling packets of information switch comprises input traffic managers, ingress routers, a memoryless cyclic switch fabric, egress routers and output traffic managers all acting under the control of a switch controller. Each ingress router includes a set of virtual output buffers one for each output traffic manager and each message priority. Each data packet or cell as it arrives is examined to identify the output traffic manager address and its message priority. The switch controller uses a first arbitration and selection process to schedule the passage of the next cell across the switch fabric which the ingress router uses a second arbitration and selection process to select the appropriate virtual output queue for use in the switch fabric transfer.

Atm communications system for transmitting internet data packets

Means (RE-R,PE-R,EX-R,ZSP,ZK-U,RE,EF-R,SO-R,AS-R) for transmitting ATM cells (Z') related to Internet data packets are additionally integrated in an ATM communications system (AKS) for transmitting data and data packets (DP) packed in ATM cells (Z) for ATM communications networks which are formed by ATM communications systems. The complete integration of the Internet transmission function into ATM communications systems (ATM-KS) results in effective traffic and network management of ATM cells (Z,Z') related to Internet data packets with a very low level of integration complexity.

Speech transmitting device and speech transmitting method

A speech transmitting device includes a signal processing unit for carrying out plural types of speech signal processes by using a speech signal in a received packet, an alignment state detecting unit for detecting an alignment state of the received packet, and a process selecting unit for selecting a speech signal process which corresponds to the alignment state being detected by the alignment state detecting means, based on a selection reference used to select the speech signal process in correspondence to the alignment state of the received packet, and then outputting a result which is processed by the signal processing means according to the selected speech signal process.