Abstract: A system and method for providing APS (automatic protection switching) redundant pair control protocol signaling for multi-nodal APS (MN-APS) is provided. Periodic liveliness messages are exchanged between each node of a redundant pair. Each liveliness message contains an IHY (I heard you) message which indicates whether or not the sender of the liveliness message received within a duration of a hold time a previously transmitted liveliness message from the recipient. When more than one MN-APS group is configured between two redundant nodes, liveliness messages are bundled together to reduce processing loads.

Abstract: Systems and methods are provided that allow voice and data traffic to be shifted from one chassis to other chassis without interrupting service. Geographic Redundancy (GR) is an inter-chassis redundancy, where the chassis may be a home agent, a packet data serving node, or any combination of wireless networking devices. Additionally, each chassis can have one or more partitions that handle subscriber session traffic and a corresponding redundant partition on a different chassis. The redundant chassis partition can take over all or a portion of the functionality of the active chassis partition if the active chassis or any critical peer servers/gateways communicating with the active chassis should fail. This provides users with uninterrupted service in the case of some failures.

Abstract: In a switch fabric including an active fabric manager and a standby fabric manager, a method that includes setting a timer for a duration and resetting the timer based on detection of a heartbeat message from the standby fabric manager via a path in the switch fabric. If the heartbeat is not detected after the timer has expired then the method includes determining whether the standby fabric manager has failed based at least in part on a topology and failing over to another standby fabric manager if the standby fabric manager has failed. The method further includes sending a message from the active fabric manager to the standby fabric manager if the standby fabric manager has not failed, the message to indicate another path in the switch fabric for the standby fabric manager to send another heartbeat message to the active fabric manager.

Abstract: A plurality of nodes are connected to one another so as to form a ring network. A pseudo master node blocks relay of user data on one side, and transmits in the ring network a health packet that contains information about a priority order in which the pseudo master node is to be set as a master node. If the pseudo master node receives the health packet transmitted by it, or receives a health packet transmitted by another node, the pseudo master node judges whether the pseudo master node is to be set as a master node based on the priority order contained in the received health packet.

Abstract: A communications system comprises a first network node coupled to a second network node so as to support a first main channel and a second main channel. A communications apparatus is coupled in-line between the first and second network nodes to support a first sub-channel in the first main channel and second sub-channel in the second main channel. The communications apparatus is arranged to determine whether an alternative sub-channel to the first sub-channel is required. If required, the communications apparatus selects the second sub-channel as the alternative sub-channel for communicating the sub-channel data.

Abstract: A shared wireless channel may serve real-time traffic and non-real-time traffic. Depending on channel conditions, the real-time traffic may experience variable levels of quality. The present invention contemplates systems and methods for guaranteeing bounded access time for real-time applications in a shared wireless network in the presence of non-real-time traffic. The systems and methods provide mechanisms to adapt to changing characteristics of wireless channels and to maximize throughput of non-real-time traffic while preserving the quality of real-time applications. The systems and methods may be extended generally to provide adaptive control over the delivery of multiple classes of traffic to protect the quality of critical applications over a shared transmission medium, including IEEE 802.11 networks, IEEE 802.16 networks, and DOCSIS networks.

Abstract: The backpressure mechanism and method described here do not completely shut off the traffic when a queue is experiencing congestion. Instead of completely shutting off the traffic and waiting for the effects, a series of backpressure pulses are sent to the upstream stage for intermittently slowing the traffic between the upstream and downstream stages. These pulses of backpressure effectively slowly down the rate of the ingress traffic to the queue to a rate less than the egress rate. This allows queue utilization to slowly decrease. These pulses continue as long as the queue utilization is above a threshold called “Starving Threshold”. This technique allows much lower queue utilization, thus requiring smaller queues sizes.

Abstract: A computer implemented method, data processing system, and computer usable program code are provided for routing a packet in a switch system. A set of paths through the switch system to a destination address are determined. The set of paths are analyzed to identify a path with a least used link, where the least used link leads to a next stage of the switch system. The routing to the destination address is set through the path with the least used link to form a selected path in order to improve congestion control and load balancing in response to identifying the path with a least used link.

Abstract: A computer system with black hole management. The black hole management system shares black hole status information among connections that employ the same path. The black hole status information may indicate either that a black hole exists on the path or that communications have been performed successfully on the path, indicating that no black hole exists. By sharing this information, delays in transmission caused by black hole probing may be reduced. Additionally, status information for a connection is reset when information indicates that the connection has been altered. By resetting the status information, delays in transmission associated with sending reduced sized packets over connections for which black holes were previously detected but may have been eliminated by changes in the connection, are avoided.

Abstract: Disclosed embodiments are generally directed to systems and methods for providing passive status messaging for a network communications device at a remote node of a network. A disclosed method includes detecting a status condition at the remote node, selecting a message from a plurality of messages stored in the network communications device, where the message corresponds to the detected status condition, and communicating the message.

Abstract: When simulating communication using a communication network such as a VoIP network, an actual communication state is accurately simulated, and communication is simulated. The distribution of delay times of packets is transformed by a predetermined transformation method, packet transmission timings to which delay times are added, are calculated based on the transformed distribution of delay times and predetermined transmission timings, a determination is made as to whether or not the packet transmission order is changed by the calculated transmission timings to which delay times are added, and, when a determination is made that the packet transmission order is changed, packet transmission timings adjusted so as not to cause a change in the transmission order are derived.

Abstract: A method of collecting consistent flow statistics through multiple congestion points within a multi-service switch/router is enabled by computing a payload length of each traffic unit received from a fabric of the switch/router. A PHY-level header containing the payload length, a class of service and a service ID is appended to the switch-internal encapsulated payload. Information associated with the PHY-level header is used at physical level congestion points to collect consistent flow statistics.

Abstract: Embodiments of the present invention provide methods and systems for a mobile client device to discover and obtain the parameters of a heterogeneous wireless network, within a plurality of heterogeneous wireless networks.

Abstract: A method and apparatus for reducing network resources from presence notification traffic. This invention assumes a standard presence architecture of presentities, watchers, and a presence server involved in pushing (notifying) watchers when a presentity's state changes. In addition, there exists a source of past communication data (or other data providing a means of prioritization) for a subscriber. The presence server determines, based upon the past communication data (or other prioritization data) of a subscriber, whether to notify about the presentity's state change immediately or to wait on notifying the watcher until either additional notify messages also need to be sent (and can be bundled in one message) or a guard timer expires. In this fashion, the presence information that the subscriber cares about is delivered in real time while the information that is less important to the subscriber consumes less network resources.

Abstract: The invention comprises a method and apparatus for determining a network connectivity in a network having a plurality of nodes. In particular, one embodiment of the method includes generating a candidate link for each of a plurality of node pairs, predicting a performance of each candidate link by evaluating an expected impact of at least one condition on each candidate link, and determining the network topology using the predicted performances of the candidate links. The performance of each candidate link may be predicted by identifying at least one condition, determining the expected impact of the at least one condition on the candidate link, and predicting the performance of the candidate link by adjusting an expected performance of the candidate link using the expected impact of the at least one condition on the candidate link.

Abstract: A system for automatically configuring a communication interface module is disclosed. The communication interface module may include a plurality of data link ports and auto-configuration logic. The auto-configuration logic may be configured to determine a data link type for a data link connected to at least one of the plurality of data link ports and determine whether a local configuration file corresponding to the data link type is available. The auto-configuration logic may be configured to acquire a remote configuration file for the data link from an external source if a local configuration file is not available. The auto-configuration logic may configure the communication interface module, using the local configuration file or the remote configuration file, to communicate over the data link.

Abstract: A graphical management system includes a web browser application communicatively coupled to a web service and a graphical management module over a network and a plurality of wireless devices (e.g., RFID readers, access ports, etc.) coupled to the network and having one or more associated antennae. The wireless devices are configured to process data received from a plurality of RF elements (mobile units, 802.11 devices, RF tags, etc.) within range of the antennae. An RF switch coupled to the network is configured to receive the data and transmit the data to the graphical management module, which provides to the web service graphical information relating to the state of the RF elements (e.g., location information, heat maps, intrusion detection, self-healing status, etc.

Abstract: A method to automatically configure a network device is provided. Without user intervention, configuration messages are generated and transmitted on physical interfaces associated with the network device. Acknowledgements to the configuration messages provide connectivity information that is utilized to instruct the network device to operate in a first, second, or third operational mode. The network device loads instructions associated with each mode to allow the network device to automatically provide connectivity based on the network configuration or topology of the domain or segment associated with the network device.

Abstract: In a centralised radio network consisting of several devices one device acts as master or network coordinator and has a transmission range. Basically, other devices of the network are able to adopt the role of a coordinator. This ability is used to enlarge the area of the network to a size larger than the transmission range of the master. A device asks its parent PNC to become a child PNC when a newly turned on device acts as a temporary PNC and broadcasts an initiation beacon indicating that it looks for a child PNC. The child PNC reports that it is available. The new device determines one of the available child PNCs to be its new master. The acknowledgment for the selected child PNC may be broadcasted to inform all the devices in the transmission range of the new device.

Abstract: Disclosed are, inter alia, methods, apparatus, data structures, computer-readable media, mechanisms, and means for detecting potential forwarding loops in bridged networks. A switch monitors the movement of packet addresses in the forwarding table to different ports. If the port associated with an address changes multiple times in a short time duration, then a potential forwarding loop is detected, and a loop corrector is notified to take appropriate action to correct the problem, such as, but not limited to changing the state of a port to a blocking state or disabling an interface, etc. If there are multiple movements outside the short time duration, they may be correct movements adjusting to the actual reconfiguration of a network, and thus, these movements are effectively filtered out of consideration.

Abstract: A real-time exchange (RTX) interfaces to a wireless communications system to provide enhanced features for advanced voice services (AVS), which include Voice Activated Floor Management, Voice Short Message Services (SMS) and Address Book Backup.

Abstract: A wireless communications device is a hub for a conference call between a user of the device, a first remote party, and a second remote party. The wireless communications device communicates with the first remote party over a first connection and with the second remote party over a second concurrently active connection. A circuit in the wireless communications device transcodes voice data received over the first and second connections so that the voice data may be shared between the parties.

Abstract: The principles of the present invention relate to passive full-duplex bidirectional Zero Packet Loss (ZPL) network taps that include single, dual, or dual differential couplers that are placed in the communication path between two network devices that communicate using a full-duplex bidirectional data stream that include a first and a second data component. The bidirectional couplers are configured to at least partially obtain a second data stream that includes at least the first data component and to obtain a third data stream that includes at least the second data component. In some embodiments, the bidirectional couplers may include a signal separation module or stage that is configured to further separate the first and second data components.

Abstract: A method of electronically broadcasting messages to a general or targeted audience. A message sender can post messages on electronic bulletin boards by accessing a website or calling a phone number. The user has control of the design and content of the message including font, background, pictures and sound; there is no need to contact another person or organization such as a radio or TV station to post the message; and the user can target a specific audience if so desired. Messages are posted on user-specified electronic bulletin boards for a certain time slot and can be applied to a variety of services such as highway advertising boards, Amber Alerts, and campus message boards, to name a few.

Abstract: Facilitating discovery of a device in a communication network comprising a WiMax network includes the device entering the communication network. An announcement message is sent to one or more multicast groups. The announcement message announces the presence of the device to the members of the multicast groups. An operation may be performed with at least one member of the multicast groups.

Abstract: A method to manage an application-layer-managed network. The method includes receiving a received signal strength indication at an application layer of an access node from a media access control layer of the access node, determining if the received signal strength indication or an averaged received signal strength indication are within a selected range of received signal strength indication. The method also includes transmitting a power-level-adjustment signal to the media access control layer based on the determination. The power-level-adjustment signal adjusts a transmission power level of at least one of a plurality of network nodes.

Abstract: A system and method are provided for managing information in a wireless network. The information can be utilized during handoff of a client from an access point to an access point. The method includes a first frame being generated and transmitted by the client to the access point through the access point. The frame includes a request for the information, wherein the information includes at least a target beacon transmission time (TBTT) of the access point. The method also includes the client receiving a second frame containing the information from the access point through the access point.

Abstract: Disclosed are a device and a method for receiving a Digital Multimedia Broadcasting (DMB) signal in a wireless terminal, which can receive a DMB signal corresponding to each channel. The apparatus includes an automatic matching unit resonating at a frequency band corresponding to a selected channel; a DMB reception unit outputting a DMB signal corresponding to the selected channel, which is received through the resonated frequency band using the automatic matching unit; and a control unit controlling the automatic matching unit to resonate at the frequency band corresponding to the selected channel and the DMB reception unit to output the DMB signal corresponding to the selected channel, which is received through the resonated frequency band.

Abstract: Methods and apparatus are described where loading information regarding loading conditions at a neighboring base station is received at a first base station and then communicated, e.g., broadcast, by the first base station to mobiles within the cell in which the first base station is located. Since the neighbor base station's loading information is being communicated to a mobile currently connected to the first base station via a reliable communications channel of the first base station, the mobile can be expected to be able to reliably recover loading factor information corresponding to not only the first base station but to the neighboring base station. By utilizing such loading factor information, the mobile can generate an improved uplink interference report. The first base station receives such interference reports from wireless terminals in its cell, facilitating efficient resource allocation and interference control.

Abstract: A wireless device including a controller controlling operations of the wireless device based on the operating mode of the wireless device for data services. The operating mode is one of a normal mode and a serving mode. The normal mode being where the wireless device acts as a normal endpoint of a data communication system and the serving mode being where the wireless device serves as a service access point for the data communication system.

Abstract: Methods and apparatus related to reporting transmission backlog information are described. A wireless communications device maintains and updates transmission backlog information corresponding to a plurality of different transmission request groups. Different request groups may correspond to different uplink traffic queues. For a request reporting opportunity, the communications device selects a request group from among the plurality of different transmission request groups as a function of: request group changes in backlog with respect to previously reported requests, the changes taking into consideration base station allocation of transmission resources; and request group priority information. A request report is generated conveying backlog information corresponding to the selected request group, and the generated report is transmitted over a wireless communications link.

Abstract: Methods and apparatus related to wireless terminal reporting alternative selection for a fixed bit size control information request report, e.g., a 4 bit uplink traffic channel request report, are described. A wireless terminal maintains a plurality of different request groups corresponding to uplink traffic to be transmitted. The same request report format includes a plurality of reporting alternatives, different reporting alternatives corresponding to different request groups. Backlog can and sometimes does exist simultaneously corresponding to request groups corresponding to different reporting alternatives. The wireless terminal uses priority information associated with the request groups having non-zero backlog to select a reporting alternative. In some embodiments, at least some of the request groups have priorities which are calculated by the wireless terminal and change as a function of determined transmission deadline information.

Abstract: The present invention provides a system, apparatus and method wherein the network initiates a PDP context activation for a second PDP context using a new IP address that can be used for new transport sessions whenever one or more operator configured criteria apply. For example, the present invention can be used to: (1) route ongoing and new communication sessions from the old network device associated with the old IP address through a new network device associated with the new IP address using the old IP address; (2) route ongoing communication sessions from the old network device through the new network device using the old IP address, and new communication sessions directly through the new network device; or (3) route ongoing communication sessions from the old network device through the new network device without using the new IP address, and new communication sessions directly through the new network device.

Abstract: A method and system for communicating a plurality of packets in the MBS communication network is provided. The method includes determining if one or more packets in the plurality of packets received at one or more controllers are MBS packets. The method further includes encoding one or more MBS frames using one or more packets, if each packet in one or more packets is a MBS packet. Thereafter, one or more MBS frames are transmitted from each BTS to a plurality of Mobile Stations (MS) at a predetermined Take Off Time (TOT) based on a predetermined criterion.

Abstract: A channel allocation method for a communication network defines a definite purpose channel group that carries signals for definite purpose system devices, such as non-flight critical applications in an aircraft, and a public channel group that carries signals for user devices, such as wireless PDAs, phones and computers used by passengers. By pre-allocating discrete channel groups for different definite purpose system devices and by separating definite purpose channels (for definite purpose system devices) from public channels (for user devices), the invention allows wireless definite purpose system devices and wireless user devices to co-exist in the same operating environment without creating signal interference that could degrade the performance of the devices.

Abstract: The invention concerns a method (200) and system for improving transmission or receipt of channel descriptors. The method can include the steps of—in a wireless communication system (100) that periodically broadcasts regular channel descriptors (310) at a set interval (312)—changing (212) a modulation scheme and transmitting (216) one or more supplementary channel descriptors (314) during the set interval between regular channel descriptors. The method can also include the step of periodically transmitting (214) a channel descriptor count (412) that provides an indication of the changed modulation scheme.

Abstract: A technique is disclosed for determining values of different portions of a total uplink interference, which can be used for scheduling and load control at a base station, for example. A disclosed example includes obtaining measurements from individual users and using those measurements to determine corresponding portions of a total uplink interference at the base station. One portion is associated with users that are controlled by a scheduler for that base station. Another portion is associated with users that are not controlled by that scheduler. Determining each of the portions individually and using a received total wideband power measurement allows for determining each of the major portions of the total uplink interference at a base station.

Abstract: Data burst communication techniques for mobile communication devices operating in packet data sessions are disclosed. A mobile communication device is adapted to receive and decode packet data of a plurality of packet data bursts of a data block over a packet data channel during a packet data session. The mobile communication device is further adapted to receive and decode broadcast control data of a plurality of broadcast data bursts of the same or adjacent data block over a broadcast control channel contemporaneously with the packet data, where each broadcast data burst is interleaved with packet data bursts of the packet data session. When a time conflict between at least one of the packet data bursts and at least one of the broadcast data bursts exists, the mobile communication device is adapted to prioritize the receiving and decoding of the at least one packet data burst over the at least one broadcast data burst.

Abstract: A system and method for monitoring performance of an identified end-user service in a radio access network (RAN) in which multiple services utilize the same bearer service. A core network node such as an SGSN includes an operator-configurable mapping table for mapping end-user services to Service Identifiers. The SGSN sends a Service Identifier to the RAN, preferably at bearer establishment or modification. Service event counters in the RAN are configured to measure performance parameters for the identified end-user service. The Service Identifier may be sent as a tag in a radio bearer request or modify message, and the RAN may be configured to apply different parameter settings for network counters depending on the service identifier tag received in the radio bearer request message.

Abstract: The invention concerns a process for assigning radio resources between a number M of multiplexed transport channels in a physical channel, each transport channel carrying a service and/or data having a requirement of a specific QoS between a user terminal and a base station of a cellular telecommunications network. The process of the invention comprises the following steps of: a)—estimating the QoS of each of the transport channels received b)—determining N services among the M services for which QoS is greater than a predetermined target value, c)—reducing the proportion of the physical channel allocated to the N transport channels determined in the step b) by modifying their flow adaptation parameters, d)—waiting for convergence of the power control loop, e)—performing the steps c) and d) until the specific QoS of each channel is attained with minimal transmission power of the physical channel.

Abstract: The present invention discloses a method, a system and apparatus of realizing indicating resource of MBS. The method comprises: a Down Link-MAP (DL-MAP) message sent by a Base Station (BS) carries resource information associated Multicast and Broadcast Service (MBS); receiving the DL-MAP message sent by BS, Mobile station (MS) judges whether the service information associated with MBS comprised in this message is identical to that reserved by the MS itself, if yes, the MS determines the physical channel resource occupied by MBS according to the resource information which is associated with MBS and carried in this message. The present invention also discloses another method of realizing indicating resource of MBS. The present invention solves the problem that the prior art cannot directly perform resource indication upon multicast service.

Abstract: Apparatus (48), and an associated method, for facilitating operation of a mobile node (12) operable in a communication system (10) to request allocation of communication capacity upon which to communicate data pursuant to a communication service. A channel allocation request generator (52) is selectably operable to generate requests for allocation of channel capacity upon which to communicate the data. A selector (54) selects when to cause the generator (52) to communicate the additional data packets. Selection is made to delay, or otherwise prevent, retransmission of requests, when a determination is made that the retransmission is unlikely to be successful.

Abstract: Systems and methods for handling a transition of a roaming mobile user device (i.e., a roaming client) from one access point (AP) to a target AP, referred to herein as soft inter-AP handoff. This technique involves a second mobile user device that is already connected with the target AP, called a roaming coordinator, assisting in handoff coordination between the APs. This coordination includes assisting the roaming client in establishing a client-to-client connection to relay data traffic during the handoff, while the roaming client establishes a connection with the target AP using traditional techniques. Soft inter-AP handoff allows a faster hand-off between APs than traditional techniques, and may reduce jitter in communications with the roaming device during the transition.

Abstract: A base station for use in wireless network that communicates with subscriber stations according to a multicarrier protocol. The base station receives an uplink subframe comprising a plurality of blocks. Each of the blocks comprises up to N subcarriers transmitted by the subscriber stations. The base station receives a first acknowledgment signal transmitted by a first subscriber station in the uplink subframe. The first acknowledgment signal is carried on at least one selected subcarrier in a first block of the uplink subframe and on at least one selected subcarrier in a second block of the uplink subframe.

Abstract: Systems and methods for bridging packet flows to bypass call legs and/or tunnels are provided. A tunnel initiator, which can be an access gateway, a foreign agent, and a mobility anchor point, for example, provides a bypass for certain packets that have a destination serviced by the same tunnel initiator. The bridge allows the packets to bypass a backhaul loop and reduces latency and frees bandwidth for other purposes in the network. The bridging can be implemented in a tunnel initiator for mobile to mobile packet flows, mobile to land line packet flows, and land line to mobile packet flows. Route optimization can also be provided in certain embodiments.

Abstract: Information on each wireless environment of an adjacent cell is exchanged between adjacent wireless base station in a mobile communication system, where the system enables a plurality of wireless base stations to communicate with each other by using a link between the base stations. Then, the latest information of the information on the wireless environments is stored in a memory at each wireless base station. Each wireless base station performs handover control, transmission power control, traffic control by referencing the memory storage information. That enables usage efficiency of wireless resources to be improved and a communication quality at end users to be improved as a whole of the system.

Abstract: In an improved method for using an HSDPA control channel HS-SCCH, all k+m bits carried on the HS-SCCH are encoded together to form a single codeword, which is transmitted over the entire duration, i.e., three slots, or 2 ms, of the transmission time interval TTI. At the receiving end, the user will receive, within the first slot, only a partial codeword. The user will make an inference whether it is the intended recipient of the corresponding transmission on the downlink shared channel. If the user determines that it is, indeed, the intended recipient, it buffers the HS-PDSCH signal and receives the remaining part of the HS-SCCH transmission.

Abstract: A method is provided by which an information-bearing message may be inferred by the receiver on the basis of which one of the M communication channels was used for transmission.

Abstract: A scheduler is adapted to schedule packets or other data blocks for transmission from a plurality of transmission elements in timeslots of a frame in a communication system. In scheduling for a given frame, the scheduler initially designates each of the transmission elements as eligible to transmit one or more data blocks in the given frame, and selects from among those of the transmission elements designated as eligible at least one of the transmission elements for scheduling in a next available timeslot of the given frame. The scheduler then adjusts the eligibility status of the selected transmission element(s), and repeats the selecting and adjusting operations for one or more remaining timeslots of the given frame. The scheduler in an illustrative embodiment may be implemented in a network processor integrated circuit or other processing device of the communication system.

Abstract: A method for providing secure communications among a plurality of ad hoc devices includes authenticating one or more first devices within a first network; authenticating one or more second devices within a second network; transmitting a group key to the authenticated first devices and to the authenticated second devices; establishing an ad hoc network by at least one of the authenticated first devices and at least one of the authenticated second devices using the group key; and communicating within the ad hoc network among the at least one of the authenticated first devices and the at least one of the authenticated second devices.