Abstract: Systems and methods for implementing a bidirectional multicast protocol with two types of join messages are disclosed. The two types of join messages, upstream joins and downstream joins, are used to control the Reverse Path Forwarding (RPF) interface is added to the outgoing interface list for a particular multicast group, which in turn controls when multicast packets will be forwarded to the rendezvous point. One method involves receiving a multicast packet addressed to multicast group G. The method inhibits the multicast packet from being forwarded via the RPF interface, unless the outgoing interface list corresponding to the multicast group G already identifies the RPF interface. The RPF interface can be added to the outgoing interface list in response to reception of a downstream join message via the RPF interface, as well as in response to monitoring, via the RPF interface, an upstream join message on a shared network segment.

Abstract: Disclosed is a reception apparatus including a basic service reception unit to demodulate and channel-decode a signal received through one broadcasting channel among broadcasting channels for a basic service, and to extract a transport stream, an additional service reception unit to demodulate and channel-decode a signal received through a broadcasting channel for an additional service combined with the basic service, and to extract a transport stream, an integrated demultiplexer to respectively demultiplex the transport stream provided for the basic service and the transport stream provided for the additional service in order to extract at least one transport stream, and a source decoder to respectively decode the demultiplexed transport stream provided for the basic service and the demultiplexed transport stream provided for the additional service in order to broadcast at least one of a basic source and an additional source combined with the basic source.

Abstract: Embodiments of the present invention disclose a method, an apparatus and a system for controlling access points. The method includes: receiving load information on working APs in a coverage area; judging a current overall capacity of the coverage area according to the load information; and controlling APs in the coverage area according to a judgment result. A network management server includes a first receiving module, a first judgment module, and a first control module. The system includes the network management server, working APs, and non-working APs. The embodiments of the present invention also provide another method for controlling APs, a primary working AP, and a system for controlling APs. In the embodiments of the present invention, APs in the same coverage area are automatically controlled to turn on or off according to the service traffic; resources are utilized rationally; labor costs are saved; and the work efficiency is improved.

Abstract: Methods of communicating location information from a subscriber to a repeater are described. The subscriber switches from a working channel to a data revert channel, transmits a request for a periodic or one-time window to transmit an update, and determines from grant information in the response announcement the allocated window and frame before switching back to the working channel. Before the allocated time, the subscriber switches to the data revert channel, confirms whether it remains scheduled to transmit the update from a repeater announcement, and if so transmits the location update in either the current or reserved window. The announcements from the repeater contain the identity of the next window and frame and the subscriber reserved to use the window in addition to grant information. The subscribers may or may not be time-aligned and the data and data revert channels may or may not be synchronized.

Abstract: Methods and apparatus to selectively assign routing tables to router linecards are disclosed. A disclosed example method includes computing costs associated with assigning routing information for two or more subsets of virtual private networks (VPNs) to each of two or more subsets of linecards of a router, solving an incapacitated facility location problem defined by the computed costs to determine an assignment of a particular subset of the VPNs to a particular subset of the linecards of the router, and configuring the particular subset of the linecards of the router with routing information for the particular subset of the VPNs.

Abstract: A method provides for the dynamic traffic prioritization in a communication network. The method electronically monitors traffic in a communication network and determines when traffic exceeds configured thresholds on the links of the communication network. Thus, the method determines a link which is potentially about to be congested in the communication network. The method categorizes the traffic on this link by an end system attached to one end of the potentially congested link into a plurality of priority categories using application layer parameters. Using a re-direct capability of the end system, the method re-directs at least one of the pluralities of priority categories of traffic to an alternate Internet Protocol address. The method uses preconfigured Quality of Service mechanisms on the provider edge router attached to the other end of the potentially congested link to guarantee a predetermined amount of bandwidth capacity of the link to traffic destined to the alternate Internet Protocol address.

Abstract: A tracking circuit has first and second filters controlled by clock signals and a combiner. Each filter has N paths in parallel between an input and an output, each path comprising a respective first/second sub-circuit and a switch (N is an integer >1). The clock signals selectively control each of the N switches of the first and second filters at a same frequency, and in variously described embodiments the first and second on-time durations may be different, the first and second sub-circuits may be different, or both first/second on-time durations and first/second sub-circuits may be different. Signals output from the first and second filter are added at a combiner. In certain examples each path in the first and second filter is controlled by same-phase clock signals, and every path on either filter are controlled with different-phase clock signals.

Abstract: A system and method of negotiating Media Gateways (MGs) between a plurality of call control nodes (CCNs). The system includes a first CCN which builds an original list of identifiers associated with at least one MG capable of being used in a call by the first CCN. The system also includes a second CCN for receiving the original list of identifiers from the first CCN. The second CCN removes from the original list any identifiers associated with any MG in the original list of identifiers which is not capable of being used in the call by the second CCN. The second CCN then forms a modified list of identifiers associated with at least one MG capable of being used in a call by the first CCN and the second CCN. The second CCN also selects a specified MG from the modified list and sends a first backward message from the second CCN to the first CCN identifying the specified MG. The first CCN may then validate that the specified MG is on the original list of identifiers and selects the specified MG for the call.

Abstract: A method to promote connectivity between a user agent (UA) and a packet data network (PDN) is provided. The method comprises determining a quality of service class identifier (QCI) to associate with a service data flow, determining a sense of change in at least one of a priority, a packet delay budget, and a packet error loss rate of the QCI to associate with the service data flow, and sending a request to establish a service data flow treatment, the request comprising the QCI and a QCI extension encapsulating the sense of change of the QCI.

Abstract: Multiple gateway devices communicating between a device level ring (DLR) network and a spanning tree (ST) network may be provided a gateway protocol that cooperatively ensures that only a single gateway is active at a given time. This cooperation may be effected by the transmission of advertise messages by gateways, the advertise messages holding precedence values so that only a single gateway having a highest precedence value is active at a given time. Loss of the advertise messages may trigger a gateway held in a backup state to assume an active gateway role.

Abstract: Network architecture configured for open communication between a plurality of sub-networks. Each of the plurality of sub-networks has a different routable network addressing scheme. The architecture includes at least one broker node adapted to communicate using at least two different routable network addressing schemes. The broker node comprises an identification management module configured to collect peer-application addresses for nodes currently accessing a specific application, the peer-application addresses being associated with a specific application, an address resolution module configured to map each of the peer-application addresses to a sub-network specific routable network address and a network coordination module configured to monitor and coordinate sub-network communication capabilities between the broker node and at least one other broker node and elect a primary broker node for each sub-network which the broker node and at least one other broker node is capable of communication.

Abstract: A data processing system comprises call processing logic comprising a voice mail subsystem, or a call management subsystem configured to process voice-over-IP (VoIP) calls, or both a voice mail subsystem and a call management subsystem; service advertisement logic coupled to the call processing logic and operable to send one or more service advertisement messages by unicast to a remote peer data processing system that is also configured with compatible service advertisement logic, wherein the remote peer data processing system is located in a different LAN segment than the data processing system; and each service advertisement message comprises one or more network addresses associated with the call processing logic, and one or more data sets each comprising an identifier value, a first value that indicates that the identifier value is associated with a telephone extension, and a second value that indicates that the identifier value is associated with a voice mailbox.

Abstract: A method and apparatus for enabling prioritization of signaling messages in a communication network are disclosed. For example, the method receives at least one signaling message, and classifies each of the at least one signaling message. The method schedules each of the at least one signaling message for processing, and discards selectively one or more signaling messages that have been scheduled under an overload condition.

Abstract: Provided is a method, medium and apparatus for providing a dynamically changed universal plug and play (UPnP) description. The method includes sensing a change of a service configuration of a device complying with a predetermined standard, updating a description including information about a service based on the change of the service configuration, and advertising that the description is updated. Thus, the service configuration is matched with the description and a control point can correctly control the device whose service configuration is changed.

Abstract: A communication device for allocating tones is described that includes a processor and instructions in memory in electronic communication with the processor. The communication device determines whether a bandwidth for signal transmission is 20, 40, 80 or 160 megahertz (MHz). The communication device respectively allocates tones for 20, 40, 80 or 160 MHz as follows: for a very high throughput (VHT) signal A1 (VHT-SIG-A1): 52, 104, 208, 416; a VHT signal A2 (VHT-SIG-A2): 52, 104, 208, 416; a VHT short training field (VHT-STF): 12, 24, 48, 48; one or more VHT long training field(s) (VHT-LTF(s)): 56, 114, 242, 484; a VHT signal B (VHT-SIG-B): 56, 114, 242, 484; and a data field (DATA): 56, 114, 242, 484. The communication device also transmits the signal.

Abstract: A communication apparatus determines whether another communication apparatus participating in a network established in accordance with a first communication standard is also compatible with a second communication standard. The communication apparatus detects leaving of the network by another communication apparatus incompatible with the second communication standard. The communication apparatus establishes a network that adheres to the second communication standard, depending on the detection result.

Abstract: A data switch for an integrated circuit comprising at least one link for receiving input data packets from an independently modulated spread spectrum clock (SSC) enabled source having predetermined spread spectrum link clock frequency characteristics, and at least one output for transmitting the data packets after passage through the switch, the switch further comprising at least one receive buffer having a link side and a core side for receiving the SSC modulated input data packets from the link, at least one transmit buffer and a core clock, wherein the core clock operates at a given frequency between predetermined error limits determined by oscillation accuracy alone and is not SSC-enabled, the core clock frequency being set at a level at least as high as the highest link clock frequency such that the receive buffer cannot be filled faster from its link side than it can be emptied from its core side.

Abstract: In a system and method of determining bandwidth requirements of an intermediate network between a first network and a second network, determining data throughput characteristics of each of a plurality of carriers in communication with the intermediate network, determining a load balancing efficiency metric based on the determined carrier data throughput characteristics, estimating a multiplexing factor based on the load balancing efficiency metric and a total number of the plurality of carriers, and determining an actual bandwidth requirement of the intermediate network based on the multiplexing factor and a theoretical maximum bandwidth of the intermediate network.

Abstract: Methods, media gateways, and computer program products are described associated with call redundancy for a packet-based network. The described call redundancy involves a receiver module in communication with the packet-based network adapted to receive or transmit data associated with a plurality of calls from one or more signaling links. The data includes signaling information based on a publicly-switched telephone network (“PSTN”) standard. A first processor module is in communication with the receiver module and is adapted to process the data associated with the plurality of calls. A second processor module is in communication with the receiver module and the first processor module. The second processor module is adapted to receive at least a portion of the data associated with the plurality of calls. At least a portion of data maintained on the second processor module is synchronized with the corresponding data processed by the first processor module.

Abstract: A switching device comprising a plurality of ingress ports and a plurality of egress ports. The switching device is arranged to receive data packets through the ingress ports and to forward received data packets to respective ones of the egress ports. The switching device is further arranged to determine a first time at which a first cell of a selected data packet is to be forwarded to one of the egress ports, determine a further time at which a respective further cell of the selected data packet is to be forwarded to one of the egress ports, store data indicating that the respective further cell is to be forwarded at the determined further time, forward the first cell at the first time, and forward the further cell of the selected data packet at the determined further time.