Abstract: Systems and methods for reducing overhead by using block acknowledgment with an all polling technique while attempting to meet latency and QoS requirements. Each node transmits a number of packets upon receiving a polling message. The Access Point (AP) then replies with a Block Acknowledgement (BlockAck), which is combined with a subsequent polling message and contains a bitmap that indicates 1 for a successfully received packet and 0 for a failed reception.

Abstract: This invention discloses a multi-point video conference system and the media processing method thereof. The multi-point video conference system includes a softswitch, an application server and terminals. The softswitch is responsible for protocol adaptation and calling process, and performing the interconnection with other systems as an external interface of the conference system. The application server is responsible for service logic control and charging. The characteristic of this invention lies in that: the terminals behaved as conference participants including a conference chairman and ordinary conference members. Any terminal registered on the softswitch could be a conference member, and the conference chairman must be a SIP soft terminal with video conference service capability in order to realize the media control.

Abstract: Certain embodiments of the present disclosure may allow WiMAX signaling overhead to be reduced by sending burst allocation information to MSs using messages that may be transmitted using more efficient modulation coding schemes (MCSs) than that allowed for DL-MAP and UL-MAP messages. For example, burst allocation information may be sent in SUB-DL-UL-MAP or HARQ-MAP messages that may be encoded with selectable MCSs that result in higher data rate than an MCS used for conventional DL-MAP and UL-MAP messages. For certain embodiments, MSs may be partitioned into groups based on CINR and the burst allocation information for each group may be transmitted using an MCS that is appropriate for that group based on the CINR for MSs in that group.

Abstract: A node device provides secure communication services over a data network, such as the Internet or another public or private packet switched network, to multiple computers that are coupled through the node device and multiple other node devices. The node device includes a network communication interface for coupling the node device to the data network. The node device includes a data storage containing cryptographic information including information that is unique to the node device. The node device also includes a tunneling communication service coupled to the network interface configured to maintaining an encrypted communication tunnel with each of multiple other node devices using the cryptographic information. For example, the encrypted communication tunnels are implemented using the IPsec or PPTP protocols. The node device includes a routing database for holding routing data and a router coupled to the tunneling communication service and to the routing database.

Abstract: The system, method, and article of manufacture of the present invention allows multiple customers connected to a common external network to each implement a layer 2 redundancy protocol, such as the spanning tree protocol, in order to prevent layer 2 loops. Accordingly, a method is presented for providing an independent loop free layer 2 topology between a external network and a customer network comprising tagging control packets originating on the customer network with a unique identifier and tunneling the control packets received from the customer network between a plurality of boundary interface devices at the external network such that the control packets are routed back to the customer network based on the presence of the unique identifier in the control packet. The layer 2 redundancy protocol on the customer network converges based at least in part on the presence of control packets appearing on more than one port on the customer network.

Abstract: Network devices, systems, and methods are provided for packet processing. One network device includes a network chip having logic and a number of network ports for the device for receiving and transmitting packets therefrom. The logic is encoded with application specific integrated circuit (ASIC) primitives to check header fields and payload content in the packets.

Abstract: In a method of improved media frame transmission in a communication network. Initially a plurality of “original” or regular media frames are provided for transmission. According to the invention, robust representations of the provided regular media frames are generated and stored locally. Subsequently, one or more of the regular media frames is/are transmitted. The invention detects an indication of a loss of a transmitted media frame, and the idea is to transmit, in response to a detected frame loss, a stored robust representation of the lost media frame and/or a stored robust representation of a subsequent, not yet transmitted, media frame to increase the media quality.

Abstract: A full services access multiplexer is described. A master DSL modem is coupled to a conductor pair. A POTS extender is coupled to the conductor pair and may sense the operation of a fallback or other signal on the conductor pair. A suppression signal may be transmitted to the master DSL modem upon occurrence of the fallback. The suppression signal may travel over a control circuit. Traffic over a backplane or other network segment may be uninterrupted to an Integrated Access Device by handling signals inbound and outbound to the backplane via packet assembler and disassembler (PAD). The PAD may transmit a data stream to vocoder and received a data stream from vocoder for injection onto the backplane. The vocoder connects duplexed traffic to the subscriber line interface circuit (SLIC), wherein traffic between the vocoder and the SLIC are in analog formats in or near the audible range of frequencies.

Abstract: The degradation of the communication characteristics and the throughput of the entire network can be improved. The failures of sending and receiving are reduced and the transmission time is reduced. In a multi-hop communication method how the source terminal 11 transmits and receives the packets with destination terminal 12 through at least one relay terminal 13, the relay terminal 13 and/or the destination terminal 12 includes a table TBL of use channel candidates that is issued by the source terminal 11, and the relay terminal 13 and/or the destination terminal 12 selects a use channel for sending the data packets from the channel candidates registered in the table and sends the data packets.

Abstract: An operational mechanism enables extending the range of cognitive networks through the use of repeater transceivers and selective routing.

Abstract: A revenue management system and method for telecommunication network use is disclosed. The revenue management system can be integrated with the internet protocol multimedia subsystem (IMS). The revenue management system and method can have a hardware and/or software revenue generation module or architecture, revenue capture module or architecture, revenue collection module or architecture, revenue analysis module or architecture, or combinations thereof.

Abstract: Methods and systems are provided for routing traffic through a virtual router-based network switch. According to one embodiment, a flow data structure is established that identifies current packet flows associated with multiple virtual routers in the virtual router-based network device. When an incoming packet is received by the virtual router-based network device, it is then determined whether the incoming packet is associated with a current packet flow by accessing the flow data structure based on a header associated with the incoming packet. If it is determined that the incoming packet is associated with the current packet flow, then the incoming packet is hardware forwarded via a network interface of the virtual router-based network device without intervention by a processor of the virtual router-based network device, otherwise the incoming packet is forwarded to software on the processor for flow learning.

Abstract: The method is applied to configure, reconfigure and monitor globally a plurality of network elements (NE1, . . . , NEi, . . . , NEj, . . . , NEN) connected to an IP Network (10) through multiple interfaces (A1, . . . , AN), with several Network Elements Controllers (NEC1, . . . , NECk, . . . , NECQ) connected to the same IP Network (10) through respective interfaces (B1, . . . , BQ). The IP Network (10) also provides a plurality of preconfigured IP functional interfaces (Cik) from each network element (NEi) to the at least one network elements controller (NECk). Each network element (NEi) has an IP networking layer (9) and runs/executes several network-related processes (P1, . . . , PL) managed and monitored by this method. The method also provides configuration and monitoring of IP interfaces (Dij) among network elements. The existing IP functional interfaces (Cik) are used to perform such managing and monitoring.

Abstract: An electronic assembly includes electronic modules connected in a series circuit such that a particular number of input connections of one of the electronic modules is connected with the particular number of output connections of another of the electronic modules. Each electronic module is configured to pass on an information which each electronic module receives on an input side at an nth of each electronic module's input connections to an nth of each electronic module's output connections. The input connections and output connections of each electronic module are arranged in a same geometric arrangement.

Abstract: The invention is directed towards techniques for forwarding subscriber frames through a Multi-Protocol Label Switching (MPLS) aggregation network using MPLS labels. Layer two (L2) network devices, such as access nodes, of a service provider (SP) network implement MPLS functionality in the data plane, but do not implement an MPLS signaling protocol in the control plane. The L2 network devices include a pool of labels applied in the data plane of the L2 network device to output MPLS communications to the MPLS network, and a protocol that allows a layer three (L3) device to control provision of L2 functionality by the L2 device. The pool of labels is dynamically configured by the L3 device via the protocol. The access nodes distribute the subscriber labels and MPLS labels as upstream assigned labels.

Abstract: A network device for providing statistical sampling of packet at a port. The network device includes an ingress module for randomly selecting a packet at one of a plurality of ports for statistical sampling and an egress module for randomly selecting a packet at one of a plurality of ports for statistical sampling. The network device also includes a processing module for receiving a copy of a selected packet from at least one of the ingress module or egress module and for performing statistical flow processing on the packet.

Abstract: A communication system comprises a central unit configured to transmit and receive communication signals; a remote unit configured to transmit and receive communication signals; and a regenerator unit configured to regenerate and transmit received communication signals, the regenerator unit comprising a first interface, a second interface and a control and status circuit configured to control operation of the first and second interface, wherein each interface is configured to operate as an independent logical regenerator unit; wherein the central unit and the remote unit communicate over a first communication loop via the first independent interface of the regenerator unit.

Abstract: With time intervals and transmission times of packets of real time streams, transmission end times thereof are calculated. The transmission order of packets of the real time streams is decided in the order of the earlier transmission end times thereof. Transmission end times of packets of a non-real time stream are compared with the scheduling times of packets of the plurality of real time streams. When the transmission end times of packets of the non-real time stream are earlier than any one of the scheduling times of packets of the plurality of real time streams, the packets of the non-real time streams are transmitted.

Abstract: A bit rate control method may include calculating a quality measure of a current frame and a mean of quality measures of two or more previous frames in order to calculate a deviation of the quality measure of the current frame from the mean of the quality measures of the two or more previous frames; comparing the deviation to a critical value measure; and controlling a quantization parameter in response to a result of the comparison. A bit rate control apparatus may include a quality measure calculator that calculates the quality measure of the current frame and the mean of the quality measures of the two or more previous frames in order to calculate the deviation; a comparator that compares the deviation to the critical value measure; and a quantization parameter setting unit that controls the quantization parameter in response to the result of the comparison.

Abstract: A method and system is disclosed for managing resource within a predetermined soft handoff group in an OFDM based telecommunications system. Logical radio resources are separated into at least one set to support the soft handoff group and at least one set for supporting normal communication traffic. At least one physical radio resource is identified for each logical radio resource in the set for supporting the SHOG according to a predetermined mapping function so as to minimize resource collision.