Abstract: A packet classifier and a method for routing a data packet are provided. The packet classifier includes a content addressable memory, a translation table and a parameter memory. The method includes looking up a content addressable memory for a base address into a parameter memory using a header of the data packet. The base address is related to the routes under ECMP for forwarding the data packet. From among these addresses, using multiple headers of the data packet, an adjustment to the base address is computed. The adjustment specifies an actual address to the parameter memory corresponding to a selected route for forwarding the data packet. The parameter memory is then accessed using the actual address to obtain parameter values relevant to the selected route. The data packet is then forwarded according to the parameter values thus obtained.

Abstract: One embodiment of the present invention sets forth a method for autonomously validating the time and frequency data obtained from multiple sources, and generating a suitable estimate of the frequency difference between the client clock and the source. The method includes the steps of protocol data unit validation, offset measurement, minimum offset filtering, and frequency filtering. With these steps, the negative effects of packet delay variation may be mitigated and a frequency estimate is determined for the source in question, together with an associated validity status. Consequently, quality control of the local clock is achieved in packet networks at significantly reduced cost and decreased level of complexity relative to prior art approaches.

Abstract: A transmission packet structure for transmitting uncompressed AV data is provided. The transmission packet structure includes a payload including multiple TDUs error-correction coded at a predetermined coding rate, wherein the payload is classified according to importance of bits constituting the uncompressed AV data; a MAC header added to the payload, wherein information for medium access control is recorded in the MAC header; and a PHY header comprising information about the coding rate, wherein the PHY header is added to the MAC header.

Abstract: A system and method for determining inter-carrier network usage may be used. The method may include determining network usage of a first packet network managed by a first communications carrier by subscribers of a second communications carrier that manages a second packet network. The network usage may distinguish communications of data packets including real-time content and non-real-time content. Network usage of the second packet network by subscribers of the first communications subscriber may be determined. A network usage differential between the determined usages of the first and second packet networks may be determined, where the network usage information may distinguish communications of data packets including real-time and non-real-time content.

Abstract: A system and method for routing non-real-time content over a packet network. A call request to communicate data packets including non-real-time content over a packet network may be received. A determination of at least one network node over which a call path for a call to be established for the call request is to be routed may be made. Network performance information associated with communications over the network node(s) may be established. A determination as to whether the network node(s) are impaired or congested may be made and, if the network node(s) are determined to be impaired or congested, communications of the data packets including non-real-time content over the network node(s) may be altered. Otherwise, if the network node(s) are not determined to be impaired or congested, the call may be established on the network node(s). In one embodiment, a call control manager may manage the call.

Abstract: A system and method for handling reservation requests. Network performance information of a communications network is gathered using performance information packet data packets. Available bandwidth is determined based on the PIP data packets of a data stream. The available bandwidth is allocated for a number of customers based on reservations.

Abstract: A system and method for communicating data packets over packet network owned by different communications carriers. Rate information may be stored in a first packet network for communicating data packets over at least two other packet networks. A determination over which of the at least two other packet networks to communicate data packets based on a lowest billing rate for communicating the data packets may be made. The data packets may be communicated over a packet network determined to have the lowest billing rate for communicating the data packets.

Abstract: Embodiments of the present invention provide a manner in which feedback from remote units (120-122) involved in a broadcast/multicast service session can be obtained using shared wireless resources and/or shared signaling sequences. Having feedback information from at least some of the remote units involved in the session enables the network equipment (101) to dynamically manage the session and potentially improve the performance of the session. Moreover, utilizing shared wireless resources and/or shared signaling sequences may reduce the overhead cost of obtaining the feedback as compared to utilizing dedicated resources.

Abstract: Methods and arrangements for facilitating subscription among at least two nodes in a distributed network, involving the designation of one of the nodes as a publisher node, the designation of one of the nodes as a subscriber node, and the recordation of a path between the subscriber node and the publisher node. The path includes at least one link between the subscriber node and the publisher node, and the recordation involves recording each distinct link in the path between the subscriber node and the publisher node.

Abstract: Methods and systems have been provided for constructing autonomous system (AS)-disjoint Traffic Engineering LSPs for load-balancing and protection purposes using AS-Level topology information in a network. The constructed network paths through a plurality of domains may be disjoint or partially disjoint.

Abstract: A method for packet routing includes receiving packets over a plurality of virtual private networks (VPNs). Each of the packets includes a respective virtual routing and forwarding (VRF) identifier indicative of a respective VPN over which the packet was transmitted. Each of the packets is assigned to a respective service class having a respective class identifier. For each packet among at least some of the packets, a respective key is computed based on the respective VRF identifier and the respective class identifier of the packet. The respective key is looked up in a configuration table to determine whether the packet is subject to network address translation (NAT). If the packet is subject to NAT, a new address is assigned to the packet, and the packet is forwarded using the new address.

Abstract: A system and method for load balancing network resources. Network performance information regarding data flow through a network is gathered using performance information packet data packets. The data flow is distributed through access points of the network using connection control admission control engines. The distributing includes routing the data flow to more efficiently use the network resources based on the PIP data packets.

Abstract: A method and apparatus for transmitting a packet in a mobile communication system. A transmitting side allocates a short sequence number for an initial transmission packet using some bits among bits of a predetermined length for expressing a sequence number of the packet, and sets a first flag indicating use of the short sequence number. The transmitting side inserts the short sequence number and the first flag into the packet, and transmits the packet to a receiving side.

Abstract: A method and system for optimizing a Quality of Service (QoS) for an application is provided. The method comprises generating (205) a dynamic database (110 or 150) of statistical information regarding at least one of the applications and one or more communication network (115, 120 and 125). Further, the method comprises selecting (210) the application to operate on the communication network. The dynamic database is then analyzed (215) to determine at least one network configuration based on desired QoS requirement. Based on the analysis of at least one network configuration a connection (220) is made to the requested application.

Abstract: 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 21 to 2n, 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 information.

Abstract: A system and method for monitoring performance of an asynchronous network may include communicating a first network performance data packet including a first indicia over an asynchronous network from a first network node to a second network node. A second network performance data packet including a second indicia may be communicated from the first network node to the second network node. At least one communications data packet may be communicated from the first network node to the second network node between communicating the first and second network performance data packets. At least one performance manager counter at the second network node may be incremented in response to receiving each communications data packet between the first and second network performance data packets.

Abstract: A request scheduling method is provided in a request accessing system having a processing unit, an upstream unit coupled to the processing unit, a downstream unit coupled to the processing unit and the upstream unit, and at least one endpoint device coupled to the upstream unit and the downstream unit, wherein the endpoint device asserts at least one request to the upstream unit. The request scheduling method includes: transmitting the request to a processing unit while the request is a non-peer-to-peer request, and transmitting the request to a downstream unit while the request is a peer-to-peer request; wherein if the request is a peer-to-peer and posted request and there is a previous asserted request which is peer-to-peer and non-posted request and the previous asserted request has a latency exceeds a predetermined time, transmitting the request earlier than the previous asserted request to the downstream unit.

Abstract: Interworking in a multi-protocol revision based Evolution Data Only/Evolution Data Optimized (EVDO) communication system is described. In this scheme, an access terminal (AT) and an access network (AN) perform session configuration in multi-protocol scenarios. The AT maintains a set indicating all the protocol revisions it supports. The AT and AN start their session negotiation with the subtypes corresponding to the highest protocol revision supported by AT and AN. There are two scenarios in which AT sends the Unicast Access Terminal Identifier (UATI) request message with protocol revisions: power up and idle handoff.

Abstract: Methods and apparatus, including computer program products, for oversubscription in a broadband network. A computer-implemented method includes enabling maximum over subscription ratio (MOSR) parameters as part of Quality of Service (QoS) parameters defining a service class, and determining a minimum amount of resources (MAR) value required to be allotted to a service connection belonging to the service class so that at time t a value of the MOSR parameters does not exceed limits configured for a specific resource type to provide a service associated with the service class.

Abstract: A station, such as a point coordinator (PC) or a non-PC station, in a basic service set (BSS) in a wireless local area network (WLAN) is disclosed. The station includes a frame classification entity (FCE), a frame scheduling entity (FSE) and a QoS management entity (QME). The FCE is logically located in a logical link control (LLC) layer of the station and has a classification table containing at least one classifier entry. Each classifier entry contains a virtual stream identifier (VSID) and a frame classifier associated with a user session. The FCE receives a data frame associated with the user session, which can be one of a voice session, a video session, a data session and a multimedia session. The data frame contains in-band quality of service (QoS) signaling information for the user session.

Abstract: In order to provide a switch device (100; 100?) connecting at least one first point (10, 12), in particular connecting at least one source device and/or at least another switch device, to at least one second point (20, 22, 24), in particular to at least one destination device and/or to at least another switch device, the switch device (100; 100?) comprising at least one virtual channel (30, 32), wherein it is possible to arbitrate and/or differentiate data, in particular data packets or data streams, being transmitted within the same virtual channel (30, 32), it is proposed that the switch device (100; 100?) comprises at least two ports (40, 42), in particular input ports, for receiving and/or at least two ports (50, 52), in particular output ports, for sending the data, in particular the data packet or data stream, the ports (40, 42, 50, 52) being respectively assigned to the virtual channel (30, 32).

Abstract: A bridge/router and method are described herein that are capable of avoiding packet replication at layer 2 where there is a failure in a network. In one embodiment, the bridge/router is informed about a fault which occurred within the network. Then, the bridge/router makes a determination about whether or not multiple LSPs would be used to flood/carry the same IP traffic out off a single port. If yes, the first bridge/router chooses one of the LSPs to carry the IP traffic out the single port and then prevents the IP traffic from being carried on the remaining LSP(s) out the single port which avoids the packet replication on a link which is associated with the single port. If no, then the first bridge/router allows the IP traffic to be carried on the LSPs out off more than one port.

Abstract: A method for communication includes coupling a group of switches in a Layer-2 bridged network. The interfaces of the switches are configured so that at least one interface of at least one of the switches is configured as a first interface type, and a plurality of other interfaces are configured as a second interface type. Upon receiving frames through the interfaces of the first and second types for transmission over the network, the received frames are labeled with corresponding first and second type indications. The frames are forwarded through the Layer-2 bridged network using the switches responsively to the type indications. Frames labeled with the second type indication are permitted to be transmitted through the interfaces of the first type and prevented from being transmitted through the interfaces of the second type.

Abstract: An interworking device is provided that affords an interface between a point-to-point (P2P) environment and a local access network (LAN) environment. The interworking device comprises a P2P frame transceiver adapted to communicate with a P2P host utilizing P2P frames formatted in accordance with a P2P protocol. A LAN frame transceiver is adapted to communicate, over a LAN environment, with a LAN host utilizing LAN frames formatted in accordance with a LAN protocol. The P2P and LAN frames include client traffic having client level network layer (NL) information associated with a common predefined client level network layer protocol. A data forwarding module utilizes the NL information to map the client traffic from at least one of i) the P2P frames into the LAN environment and ii) the LAN frames into the P2P environment.

Abstract: Range-confined security management adapter and method simplify security deployment in a network. First RC security information, including nearest- and k-neighbor information, is transmitted between authenticating neighbor and supplicant neighbor using a predetermined transmission adaptation technique. The adapter can evoke a response from the neighbor by adapting the initial transmitted signal power level, and increasing incrementally; the initial transmitted signal bit rate, and decreasing incrementally; or both, in response to second RC security information signal. RC communications are effected at low power, high bit rate, or both, establishing secure configuration, effecting secure communication, and thwarting miscreant intrusion into the network.

Abstract: Disclosed is a method and system for controlling multiple network services based on a common user profile. A plurality of user profiles, each specifying access and delivery settings for a plurality of network services, are maintained. When a user uses any of the network services, a login request is received, the user profile associated with that user is accessed, and access to and delivery of all of the network services to the user are controlled based on the user profile. The access settings in the user profile are used to restrict certain content from each of the network services, and the delivery settings are used to specify delivery preferences of the user.

Abstract: A data processing apparatus includes a wireless broadband module; a wireless local area network module; a wireless broadband module driver to drive the wireless broadband module; an antenna to communicate with an external device; a switch to connect/disconnect the antenna to/from the wireless broadband module and the wireless local area network module; and a controller to control the switch so that the antenna is connected with the wireless broadband module to communicate with the external device if the wireless broadband module driver is operating, and the antenna is connected with the wireless local network module to communicate with the external device if the wireless broadband module driver is not operating.

Abstract: An application-specific integrated circuit for use in optimizing a packet network including a processing unit that processes defined sequences of assembler language and executes defined sequences of assembler instructions; program and data memory that stores the defined sequences of assembler instructions; an internal data bus; and an input/output (I/O) interface arranged between the internal data bus and at least one external network device for communicating data packets containing network performance information between the internal data bus and the at least one external network device.

Abstract: The present invention is directed to a secondary communication server 216 for assuming control of a communication formerly controlled by a primary communication server 212 in the event of a failure, comprising: (a) an input operable to (i) receive, from a first communication node 204a, first communication information, wherein the first communication information is associated with the communication and comprises a first node identifier 236a and/or a communication identifier 240a, the first node identifier 236a is associated with a second communication node 204b, the communication identifier is associated with the communication, and the second communication node 204b comprises second communication information associated with the communication and (ii) thereafter receive, from the second communication node 204b, the second communication information; and (b) a reconstruction agent 228 operable to identify the second communication information based on the first node identifier 236a and/or communication identif

Abstract: A method and system for reliable multicasting on a communication network includes sending Request-to-Send (RTS) signals from a sender node of the network to the receiver nodes, the RTS signals include a set of identifiers corresponding to the receiver nodes. The Clear-to-Send (CTS) signals and Acknowledgment (ACK) signals are sent from the receiver nodes according to an ordering function of the set of identifiers.

Abstract: Disclosed is a method of transmitting data from a plurality of traffic flows based on a quality of service indicator which indicates a manner of partitioning a rate grant such that more than one traffic flow, if desired, may simultaneously use the rate grant thereby avoiding rate grant starvation by one or more traffic flows. The method of transmitting data from a plurality of traffic flows comprises the steps of extracting data from one or more buffers based on the quality of service indicator and the rate grant, and transmitting a block of data comprising the extracted data wherein the one or more buffers are associated with one or more traffic flows.

Abstract: A radio communication apparatus includes a first processing unit which performs physical layer protocol processing in order to make a radio communication using at least one first channel having a first frequency bandwidth and a second processing unit which performs physical layer protocol processing in order to make a radio communication using a second channel which has a second frequency bandwidth. The second frequency bandwidth has a bandwidth wider than that of the first frequency band. A transmission frame including either information of a traffic class, a capability of a destination terminal, a recommended bandwidth by the destination terminal, and a time limit to complete transmission of a frame is stored in a queue. A scheduler controls a time when the transmission frame is output from the queue, and which of the first and the second processing units should be used for the output transmission frame, based on the information.

Abstract: Disclosed is a system and method for assembling a data packet. The system can be implemented as four memory elements associated with one or more processors. The first memory element stores a sequence number and a sub-channel identifier for an incoming data packet. The second memory element stores a revised packet fragment. The third memory element stores an unrevised packet fragment. The fourth memory element stores a starting address. In the system, the starting address may be the starting address of the revised packet fragment or the unrevised packet fragment wherein the first memory element identifies portions of the fourth memory element associated with the sequence number. The one or more processors are configured to create a modified data packet by combining the unrevised packet fragments and the revised packet fragment, wherein the modified data packet is associated with the sequence number and sub-channel identifier.

Abstract: A system for monitoring and optimizing performance on a packet network with vector performance tables including a network element including an input/output (I/O) unit configured to communicate data packets with at least one other network element on the packet network the data packets including network performance information; a processing unit configured to receive the data packets from the at least one other network element; and a memory in communication with the processing unit and configured to store a vector performance table including a compilation of the network performance information contained in the data packets, the processor configured to process the data packets to store the network performance information in the vector performance table. A method for monitoring and optimizing performance on a packet network with vector performance tables is also included.

Abstract: A system for centrally controlling packet network communications may include an input/output (I/O) unit configured to communicate data packets over a packet network with multiple network communications devices, a processing unit in communication with the I/O unit and configured to communicate with the network communications devices via respective node segments, and a memory in communication with the processing unit and configured to store a table. The processing unit may be configured to receive and store network performance information of node segments generated by the network communications devices. The network performance information may be stored in the table in association with indicia representative of the node segments, respectively. The processing unit may further be configured to control network communications by the network communications devices over the node segments based on the network performance information stored in the table.

Abstract: A network communications device may include an input/output (I/O) unit configured to communicate first data packets with at least two network communications devices over respective node segments on a packet network A processing unit may be configured to receive second data packets from the network communications devices. The second data packets may include network performance information generated by the network communications devices in response to receiving the first data packets. A memory may be in communication with the processing unit and be configured to store a table containing network performance information associated with the node segments over which the second data packets are communicated. The processing unit may be further configured to process the second data packets to store the network performance information in the table. The network performance information may be utilized to alter communications of data packets over the node segments.

Abstract: Packets are relayed using a network relay device including a plurality of interface units. Each of the interface units includes one or more physical ports for connection to a line, and a bandwidth controller configured to control transmission bandwidth for packets received by the physical ports. Furthermore, a single specific physical port is selected as the output physical port from the distributed-control logical port based on output port group information unique to the output port group including the distributed-control logical port.

Abstract: A tool for managing a network of interconnected devices. The tool may provide a user with an interface that allows the user to view the type and status of each network device (that is, each device connected to the network), and even the status of the network itself. The tool may alternately or additionally provide a user with services related to the network. such as allowing a user to perform one or more tasks associated with devices in the network.

Abstract: A single chip integrated circuit for use in an optical transceiver for converting and coupling an information containing electrical signal with an optical fiber having an XFI interface for coupling with an external electrical cable or information system device, and an XAUI interface for coupling with a laser transmitter subassembly including first, second, third and fourth lasers operating at different wavelengths and modulated by the respective four lane XAUI signals. The circuit includes an encoder for encoding the incoming XFI signal into four signals in the XAIU format, and a decoder coupled to the XAUI interface for receiving a four lane XAUI signal and converting it into a serial XFI signal coupled to the XFI interface.

Abstract: A method of operating a service provider system comprising receiving first traffic, determining a first traffic type of the first traffic from a plurality of traffic types, selecting the first communication link from a plurality of communication links based on the first traffic type, and transmitting the first traffic on a first communication link to a communication system.

Abstract: A method and system for interfacing between a portable media device and one or more media content providers. The method may be practiced, for example, in a system including the portable media device that receives content from one or more media content providers. The method can include identifying a first data format employed by the portable media device and a second data format employed by a selected media content provider. A data stream is received from the selected media content provider. The data received from the selected media content provider can be modified to be compatible with the first data format. Alternately or additionally, the data stream can be filtered to eliminate content that is unnecessary for the portable media device. The method further includes communicating the formatted data to the portable media device.

Abstract: A controller of a communications network enables endpoints or multiple networks to intercommunicate using multiple types of bearer format (IP, TDM, ATM, Frame Relay, etc.), and enables a bearer format conversion when necessary to carry bearer channel information across an interface of the network. The network may be packet-based or circuit-based and may include gateways and associated controllers which work in tandem to transfer format conversion parameters between endpoints or networks. The format control parameters are exchanged between various controllers, i.e., call control elements, to determine the appropriate format to forward the bearer channel information across the interface and to instruct the associated gateway of the required format conversion. The determination of the necessary format conversions may occur on a call-by-call basis, or by periodically detecting and storing format conversions associated with the various endpoints and intercommunicating networks.

Abstract: A method of interface communication between entities in soft switch system in NGN, and a method and apparatus for Gateway Control Protocol (GCP) message transmission are disclosed, so that H.248 messages can be transmitted between Media Gateway Controller and Media Gateway over MTP3B/ATM, hence full advantages of resources are taken in existing optical fiber networks and E1/T1 networks, so as to improve the networking flexibility and reduce the cost. The internal data transmission mechanism between MTP3B protocol layer and H.248 protocol layer is established via an M3H adaptation layer; load sharing between H.248 processing modules is enabled by establishing mapping between H.248 links and MTP3B signaling points; the adaptation relationship between MTP3B layer and H.248 layer is implemented by configuring and maintaining logic relationship between table of LinkSets, H.248-MTP3B mapping table, and table of H.248 processing modules, thus implementing the mechanism of bearing H.248 messages over MTP3B.

Abstract: Packets for a discontinuous transmission of a speech signal via a packet switched network may be provided in shorter transmission intervals during an active state and in longer transmission intervals during an inactive state. The active state may be selected whenever a speech signal comprises a speech burst, optionally with a hangover period after a respective speech burst. For enhancing the control of an adaptive jitter buffer at a receiver at the beginning of a respective transmission session, an active state is enforced in addition for a predetermined period at a beginning of a transmission session, irrespective of a presence of speech bursts. In case hangover periods are used, the length of the predetermined period exceeds the length of these hangover periods.

Abstract: The present solution provides a spillover management technique for virtual servers of an appliance based on bandwidth. A network administrator may configure a bandwidth threshold for one or more virtual servers, such as virtual servers providing acceleration or load balancing for one or more services. The bandwidth threshold may be specified as a number of bytes transferred via the virtual server. The bandwidth threshold may also be specified as a round trip time or derivative thereof. A user may specify the bandwidth threshold via a configuration interface. Otherwise, the appliance may establish the bandwidth threshold. The appliance monitors the bandwidth used by a first virtual server. In response to detecting the bandwidth reaching or exceeding the bandwidth threshold, the appliance dynamically directs client requests to a second virtual server.

Abstract: A system and method for controlling network bandwidth. Network performance information that includes information regarding real-time data packets using performance information packet data packets is gathered. The network bandwidth is throttled for each of a number of customers in a communications network using one or more connection admission control (CAC) engines based on the network performance information and quality of service guarantees.

Abstract: Disclosed is a UGMII system to interface multirate devices including 10 gigabit per second data exchange rates. Mode selection is enabled to provide for automatic detection and adaptation to any transmit rate including 10M, 100M, 1 G, and 10 G. Mode selection comprises the negotiation between the UGMII extension sublayers located at the MAC and PHY to select between one of several operational modes including: XGMII communication, GMII encapsulation, Clause 22 MDIO register management and Clause 45 MDIO register management. Selection of UGMII and XGMII operating modes are negotiated between the MAC and PHY using ordered sets to announce and acknowledgement a mode change. In one embodiment 802.3 Clause 46 defined ordered sets are utilized.

Abstract: In a RTP stream having a plurality of FEC frames containing source blocks of media packets, random access points are inserted in front of the source blocks so as to allow a media decoder to decode the media packets as soon as FEC decoding is finished. In particular, the media packets contain forward error correction (FEC) source blocks for a multimedia broadcast/multicast-based streaming service content. As the multimedia broadcast/multicast streaming service includes dynamic interactive multimedia scene content where the source RTP packets of different media along with the FEC RTP packets are transmitted as separate RTP streams, the inclusion of the random access point facilitates immediate rendering of the dynamic interactive multimedia scene content after FEC decoding, thus reducing the tune-in latency.

Abstract: Systems and methods for directing and facilitating the installation and revision of communications connections use indicators on active jacks to inform installers and revisors of installation and revision instructions forwarded by a network installation, monitoring, and/or revising system. Cross-connect and interconnect systems utilize patch panels populated with active jacks having indicators for facilitating installation and revision of cabling.

Abstract: A pilot transmission in a multiple antenna closed loop transmission time multiplexes a beam-specific pilot and an antenna-specific pilot in two short blocks of one uplink sub-frame. The beam-specific pilot is transmitted as an in-band pilot with the same beam as data to provide optimal data demodulation/estimation. The antenna-specific pilot is transmitted as an out-band pilot to provide optimal beam selection.