Abstract: To protect a multicast data stream for a multicast group, two P2MP pseudowires are established to deliver multicast data for the particular multicast group to an aggregation node. The two P2MP pseudowires are defined such that the pseudowires have no transport nodes in common other than the aggregation node. The aggregation node replicates data received via a primary pseudowire of the two P2MP pseudowires to subscribers of the multicast group. The aggregation node monitors the data from the primary pseudowire to detect failures in the data flow. When a failure is detected in the primary data stream, the aggregation node replicates data received via a secondary pseudowire of the two P2MP pseudowires for delivery to the multicast group subscribers.

Abstract: Techniques are described for dynamically generating a disaster recovery plan. In an embodiment, a set of topology metadata is determined for a first site on which a multi-tier application is deployed and a second site where the multi-tier application will be activated in the event of switchover/failover. The topology metadata may include metadata that identifies a set of targets associated with a plurality of tiers on the first site on which the multi-tier application is deployed and also on the second site where the multi-tier application would be activated in the event of disaster recovery operation like switchover or failover. Based, at least in part, on the topology metadata for the first site and second site, a disaster recovery plan is generated. The disaster recovery plan includes an ordered set of instructions for deactivating the multi-tier application at the first site and activating the multi-tier application at a second site.

Abstract: A communication path switching device is configured to determine whether or not a specified network device where exclusion from a communication path or addition to the communication path is specified through an input device can perform path switching based on the individual pieces of information on a coupling configuration and a presence or absence of an independent control function; refer to a storage device for the individual pieces of information on the coupling configuration and a coupling policy to change the coupling policy according to a result of the determination; and processing of issuing, according to the result of the determination and the individual pieces of information in the storage device, a path switching instruction to a network device having the independent control function and a network device not having the independent control function that are path switching targets on a communication path directed to the specified network device.

Abstract: Information associated with session flows between communication devices and servers is collected and shared. A request is generated for data having predefined attributes within session flows occurring between multiple communication devices and a server over a communication network. The request is sent to a controller having access to information indicating network elements within the communication network traversed by the session flows. The controller selects a network element from among the network elements traversed by the session flows and retrieves the data from the selected network element.

Abstract: Embodiments relate to data shuffling by logically rotating processing nodes. The nodes are logically arranged in a two or three dimensional matrix. Every time two of the nodes in adjacent rows of the matrix are positionally aligned, these adjacent nodes exchange data. The positional alignment is a logical alignment of the nodes. The nodes are logically arranged and rotated, and data is exchanged in response to the logical rotation.

Abstract: Methods and apparatus are provided for receiver measurement assisted access point control. A method operable by a Wi-Fi network entity includes signaling a time to at least one station served by the Wi-Fi network entity for interference measurements. The method includes receiving interference measurements taken at the signaled time from the at least one station. The method includes tuning transmitter parameters based on the received interference measurements.

Abstract: A wireless communication system provides call routing when the connection to a core network is lost. A base station wirelessly exchanges data packets associated with one or more communication sessions with one or more wireless communication devices. An Internet Protocol (IP) router scans the data packets to identify active users on the base station. The IP router generates a database of the active users. The IP router detects a loss of connection to the core network and determines which of the communication sessions can be maintained based on the database of active users. The IP router routes the data packets for the communication sessions that can be maintained back to the base station for delivery.

Abstract: Methods, systems and apparatus for managing and/or enforcing one or more policies for managing internet protocol (“IP”) traffic among multiple accesses of a network in accordance with a policy for managing bandwidth among the multiple accesses are disclosed. Among the methods, systems and apparatus is a method that may include obtaining performance metrics associated with the multiple accesses. The method may also include adapting one or more rules of one or more the policies for managing IP traffic among the plurality of accesses based, at least in part, on the performance metrics and the policy for managing bandwidth among the plurality of accesses. The method may further include managing IP traffic associated with at least one wireless transmit and/or receive unit (“WTRU”) among the plurality of accesses responsive to the adapted rules.

Abstract: Aspects of the disclosure are directed to a method, apparatus, and computer software for wireless communication. In various examples, DTX is enabled for the transmission of voice frames corresponding to a circuit-switched voice call. That is, the voice frames may be transmitted during a portion of a transmission time interval TTI that is less than an entirety of the TTI (for example, during half of the TTI). The transmission may be suspended during a remainder of the TTI following the portion of the TTI.

Abstract: Provided are a logical channel establishing method and system, an edge virtual bridging (EVB) station, and a bridge.

Abstract: Provided are a method, a system, and a computer program product in which a storage controller determines one or more resources that are impacted by an error. A cleanup of tasks associated with the one or more resources that are impacted by the error is performed, to recover from the error, wherein host input/output (I/O) operations continue to be processed, and wherein tasks associated with other resources continue to execute.

Abstract: When a failure of a reply in response to a packet is detected, A terminal apparatus transmits, to a stand-by information processing apparatus, multiple packets in which multiple divided command statements are attached to header areas thereof, the divided command statements being obtained by dividing into multiple statements a command statement for a switch command to switch from a currently-operated information processing apparatus to the stand-by information processing apparatus. The stand-by information processing apparatus stores each of the divided command statements that are attached to the packets that are transmitted from the terminal apparatus. The stand-by information processing apparatus performs a switch operation to switch from the currently-operated information processing apparatus to the stand-by the information processing apparatus in accordance with the switch command that is generated from the stored divided command statements.

Abstract: Methods, apparatuses, and computer-readable media for determining a source block size are presented. A sender transmits received media as source blocks. The sender receives a value N, a target number of packets from which a receiver can recover a source block with high fidelity; a value P?, a target packet payload size; a value O, a symbol reception overhead value; and a value R, a target upper bound on data reception overhead. The sender determines a value K, a number of symbols to be used per source block, based on the values N, P?, O and R. The source symbols of the source blocks are encoded into encoded symbols. In some cases, the encoded symbols include the source symbol, and in other cases the encoded symbols do not include the source symbols. The encoded symbols are packetized into at least N packets for transmission to the receiver.

Abstract: A method is provided for managing at least one connection established between a mobile terminal and an anchor gateway located between a mobile network and a packet-switching network, and being capable of conducting at least one communication session with the packet-switching network. The method includes receiving a management message from a device suitable for managing the at least one connection, the message including at least one piece of information relating to a change in the state of a connection of the mobile terminal, and an identifier relating to the connection; determining the need for a new connection by analyzing the at least one current connection at least according to the received information; once it has been determined that the need for a new connection exists, triggering the transmission of a request to establish a new connection between the mobile terminal and a new anchor gateway according to the analysis.

Abstract: A method of RNTI allocation in dual connectivity for a communication device in a wireless communication system is disclosed. The method comprises connecting to a first base station of the wireless communication system, being assigned a first RNTI by the first base station for communication with the first base station, receiving a RRC message for configuring communication with a second base station of the wireless communication from the first base station, wherein the RRC message includes a second RNTI, and the second RNTI is assigned by the second base station and transmitted by the second base station to the first base station, and performing communication with the first base station with the first RNTI and performing communication with the second base station with the second RNTI.

Abstract: Methods and apparatus are provided for receiver measurement assisted access point control. A method operable by a Wi-Fi network entity includes signaling at least one trigger indication to at least one station served by the Wi-Fi network entity for interference measurements. The method includes receiving interference measurements taken based on the at least one trigger indication from the at least one station. The method includes tuning transmitter parameters based on the received interference measurements.

Abstract: A technique for controlling network routing in a network (100) is provided. The network (100) includes a first end node (102) and a second end note (104). The end nodes are connectable along a first routing path (106) by at least one link (113). The network (100) further provides a second routing path (108) including the first end node (102) and the second end nodes (104). As to a method aspect of the technique, one or more queues (402) are provided. Each of the queues (402) serves at least one tunnel (Tunnel_1; Tunnel_2) along the first routing path (106). A switching of the tunnel (Tunnel_1) to the second routing path (108) is triggered based on a combination of two pieces of information. A piece of information includes information as to a queue build-up at the queue (504) serving the tunnel (Tunnel_1). Another piece of information includes information as to a capacity of the link (113) of the first routing path (106).

Abstract: A method is implemented by a network element or controller for determining a backup path for a fast reroute process to be utilized in response to a network event invalidating a primary path to a destination node. The method identifies at least one intermediate node that has a backup loop free alternative (LFA) path to a destination node in a network where no path meeting LFA conditions can be found for a point of local repair (PLR).

Abstract: Identifying a behavior of a service is disclosed. A predetermined interrogation packet that corresponds to a hypothesis is sent to a network communication port of a receiver. The predetermined packet is one of a plurality of predetermined interrogation packets sent to the network communication port. The hypothesis is consistent with a behavior of a corresponding service. The predetermined interrogation packet invites an expected action. The expected action is detected. It is determined that the behavior of the service that corresponds to the hypothesis is operating.

Abstract: Methods of load-balancing in a network are provided herein. One such method includes steps of receiving network traffic at a network device, the network traffic having a destination address and of performing a look-up in a multipath group table using the destination address. The multipath group table includes entries for recursive next-hops, each recursive next hop being associated with a connected next hop in the multipath group table. The method also include a step of hashing the network traffic according to a number of recursive next-hops associated with the destination address in the multipath group table. Additional methods and information handling system are also provided.

Abstract: A method, an apparatus, and a computer program product for sustaining a link with a wireless network are provided. The apparatus communicates data with the wireless network via a first link with a first base station, acquires a resource to perform a beam training sequence with a second base station, wherein the acquired resource allows the beam training sequence with the second base station to be performed while the data is communicated via the first link, performs the beam training sequence and exchanging signaling information with the second base station using the resource to establish a second link to the second base station, evaluates a link strength of the second link based on the beam training sequence, and determines whether to switch the data communication from the first link to the second link based on the evaluation.

Abstract: A ring network failure switching method, includes: receiving first data traffic, where the first data traffic includes a destination MAC address; querying a forwarding entry stored in a local node according to the destination MAC address, to obtain a ring network identifier corresponding to the destination MAC address, where the ring network identifier is uniquely corresponding to the first node connected to the destination MAC address; and obtain path state information of a link corresponding to the ring network identifier; and transmitting the first data traffic to the first node in a direction that is opposite to that of the link when the path state information indicates that the link is in a failure state.

Abstract: A localized repair method in a network using a control plane includes, responsive to a failure on a local repair segment defined on a connection traversing the network, generating a release message in the control plane; attempting a local repair on the local repair segment; if the local repair is unsuccessful, transmitting the release message to redial the connection; and, if the local repair is successful, signaling a new sub-path based on the local repair. A controller and a network are also disclosed.

Abstract: One embodiment of the present invention provides a switch. The switch is configurable to be a member of a first fabric switch. The switch includes a link aggregation module. During operation, the link aggregation module marks an ingress-switch field of a frame with a virtual switch identifier. This virtual switch identifier is associated with the switch and a second switch, which is a member of a second fabric switch, and is from a range of identifier associated with the first fabric switch and the second fabric switch. Each of the first fabric switch and the second fabric switch is operable to accommodate a plurality of switches and operate as a single switch.

Abstract: In one embodiment, a routing node determines a risk-sharing metric between pairs of nodes in a shared-media communication network, and may then compute a plurality of routes that minimizes the risk-sharing metric between the routes, to correspondingly route traffic according to the computed plurality of routes. Additionally, in another embodiment, a particular node in the shared-media communication network may determine a risk-sharing metric between itself and each of one or more other nodes in the shared-media communication network. The particular node may then share the one or more determined risk-sharing metrics with one or more routing nodes in the shared-media communication network, accordingly.

Abstract: The present invention relates to a method and to an apparatus for supporting carrier aggregation. More particularly, the present invention relates to a method for enabling user equipment to receive a signal from a base station in a wireless communication system which supports carrier aggregation, wherein said the method comprises the steps of: setting a first component carrier to a paused state; receiving state change information for the first component carrier via the second component carrier during the paused state of the first component carrier; and monitoring a control channel via the first component carrier if the state change information indicates a predetermined value. The present invention also relates to an apparatus for the method.

Abstract: Wireless line termination units 21 and 22 respectively transmit and receive frames via wireless lines 51 and 52. Line termination units 25 and 26 respectively exchange frames with the wireless line termination units 21 and 22. The wireless lines 51 and 52 are treated as one virtual line. A radio monitoring unit 272 monitors the state of the wireless lines 51 and 52, and in accordance with the redundancy mode, instructs the wireless line termination units 21 and 22 to exchange copy frames with other wireless line termination unit and to abandon received frames. A communication path control unit 273 sets, in accordance with the monitoring result as to the state of the wireless lines by the radio monitoring unit 272, the line termination units 25 and 26 to each be an active system or a standby system. A switch core 271 passes frames to be transmitted to the line termination unit that operates as the active system.

Abstract: A Packet Data Network Gateway (P-GW) to maintain session continuity for a UE in an LTE network comprises a communication transceiver and a processing system. The communication transceiver is configured to receive a first session setup message for the UE. The processing system is configured to process the first session setup message to determine if the UE qualifies for alternate P-GW access, and if the User Equipment qualifies for the alternate P-GW access, generate a second session setup message indicating a primary P-GW ID, a primary P-GW TEID, an alternate P-GW ID, and an alternate P-GW TEID. The communication transceiver is configured to transfer the second session setup message for delivery to a Service Gateway (S-GW) in the LTE network, wherein the S-GW automatically uses the alternate P-GW ID and the alternate P-GW TEID if performance of the primary P-GW ID and the primary P-GW TEID falls below a threshold.

Abstract: An IP fast reroute scheme offering full protection is disclosed for reducing the number of address lookups associated with a message packet. The IP fast reroute scheme offering full protection includes a router configured to forward the arriving packet to a next-hop neighbor node according to one of a first pointer and a second pointer associated to a destination node in a forwarding information table stored in a forwarding information memory storage; the first pointer is directed to a first next-hop neighbor node which is on the shortest path from the network node to the destination node; and the second pointer is directed to a second next-hop neighbor node different from the first next-hop neighbor node, the second next-hop neighbor node on a candidate cycle containing both the network node and the destination node having the greatest overlap with a sink tree rooted at the destination node.

Abstract: Provided is a communication system capable of releasing a tunnel while securing mobility without securing resources in an SGW or the like. A first node provided in a communication system that provides mobility of packet data using tunneling includes: a tunnel control unit that releases a tunnel and deletes tunnel information; and a management unit that associates and manages an IP address allocated to a terminal to which the tunnel is established and subscriber identification information of the terminal when the tunnel is released and the tunnel information is deleted.

Abstract: In one embodiment, an initial path is established in a wireless deterministic network between a source and a destination through one or more intermediate nodes, which are typically informed of a required metric between the source and the destination for communicating a packet. The initial path is locally (e.g., without contacting a path computation engine) reconfigured to bypass at least one of the intermediate nodes creating a new path, with the new path meeting the requirement(s) of the metric. Note, “locally reconfiguring” refers to the network nodes themselves determining a replacement path without reliance on a path computation engine or other entity (e.g., network management system, operating support system) in determining the replacement path. In one embodiment, a network node not on the initial path replaces a node on the initial path while using the same receive and send timeslots used in the initial path.

Abstract: A telecommunications network, comprising plural nodes connected by plural spans and arranged to form a mesh network. There is at least one pre-configured cycle of spare capacity established in the mesh network, the pre-configured cycle including plural nodes of the mesh network. The plural nodes of the pre-configured cycle are configured to protect a set of plural mutually disjoint working paths end to end.

Abstract: A method for communicating between first termination equipment and at least one second and one third termination equipment through respective first and second pseudo links in a packet-switching network.

Abstract: Methods and apparatus for reducing a peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) signal in an MIMO-OFDM communication system is provided, in which the method for reducing the PAPR of the OFDM signal may identify interference generated in an MIMO communication system, and adjust a clipping ratio (CR) for an effect of a clipping distortion to be less than an effect of interference.

Abstract: Adaptive modulation and priority-based flow control in wireless communications are disclosed. Ingress communication traffic is modulated for transmission over a wireless communication link. A modulation rate of modulation to be applied to the ingress communication traffic is controlled by adaptive modulation. A rate at which the ingress communication traffic is received is controlled through Priority-based Flow Control (PFC), but the PFC is based on the adaptive modulation. Adaptive modulation and PFC are thus linked together. PFC messaging could be sent when a change in modulation rate due to the adaptive modulation would not meet the rate at which the ingress communication traffic is received. If a change in modulation rate due to the adaptive modulation would still meet the rate at which the ingress communication traffic is received, then PFC messaging might not be sent.

Abstract: Network devices perform multiple stage path resolution. The path resolution may be ECMP resolution. Any particular stage of the multiple stage path resolution may be skipped under certain conditions. Further, the network device facilitate redistribution of traffic when a next hop goes down in a fast, efficient manner, and without reassigning traffic that was going to other unaffected next hops, using multiple stage ECMP resolution.

Abstract: There is provided a method for use by a router in a communications network. Forwarding information is maintained (S1) which specifies the next hop node for each of a plurality of possible destination nodes. Update information is maintained (S1) which specifies how, if at all, the next hop nodes specified in the forwarding information are to be updated for a plurality of possible network resource failures. Known failure information is maintained (S1) which relates to a known network resource failure or which specifies that there is no known network resource failure. A failure notification is received (S2) relating to a network resource failure. In response to receipt of the failure notification, it is determined (S3) from the failure notification how, if at all, the known failure information is to be updated, and the known failure information is updated, if required, based on the determination (S4). A communications packet is received (S5).

Abstract: Methods and apparatus for improving Circuit Switched (CS) Fallback performance, such as in an LTE network, are described. In one aspect, a UE may perform a RAU procedure before performing a CS call setup procedure when the UE has camped on a Non-DTM GERAN target after failing to access a redirection target. In another aspect, an MME may determine whether to perform a PS suspension based on an ISR status associated with a user terminal. In another aspect, an eNB may send information associated with a PS suspension to a user terminal.

Abstract: In a heterogeneous network deployment that includes a macro base station and a low power node, a geometry indicator is transmitted by the low power node to facilitate the calculation of a path loss difference value at a user equipment using power estimates of the received synchronization signal from the macro base station and received geometry indicator signal from the low power node. Using the estimated path loss difference value, the user equipment adjusts the power level of an initial preamble signal transmission to the macro base station.

Abstract: Label Distribution Protocol (LDP) extensions are described that enable distribution of neighbor-label mappings for directly connected neighbor routers. A router capable of supporting the LDP extensions distributes neighbor-labels to be used by the router to label switch traffic destined for the directly connected neighbor router irrespective of a hop-by-hop Interior Gateway Protocol (IGP) path determined based on link metrics. In some examples, the neighbor-labels may increase backup coverage, e.g., link protection and/or node protection, in a network that, due to link metrics, does not have a viable loop-free alternate (LFA) path between an ingress router and an egress router of a label switched path (LSP). In other examples, the neighbor-labels may improve load balancing by enabling an ingress router in a first autonomous system (AS) to select a particular remote link on which to send traffic destined for remote routers in a second AS.

Abstract: An apparatus comprising a memory, and a processor coupled to the memory and configured to transmit a backup Label Switched Path (LSP) multicast Resource Reservation Protocol-Traffic Engineering (mRSVP-TE) path request (PATH) message upstream, wherein the backup LSP PATH message requests reservation of a first backup LSP to protect a first primary LSP configured to transmit multicast data, and wherein the backup LSP PATH message is transmitted to support a facility mode one to many (1:N) fast reroute protocol.

Abstract: A method, a network, and a node include computing a path by a source node; sending a message to nodes in the path with associated validation criteria; locally checking the validation criteria at each of the nodes in the path; if the validation criteria is satisfied at the node, forwarding the message to the next node in the path; else there is a validation criteria failure at the node, appending feedback data to the message, converting the message to a validation message, and forwarding the validation message to the next node in the path; and at a destination node, if there are no validation criteria failures, then establishing the connection; else issuing a release message to the source node with all the feedback such that the source node can compute a new path exclusive of nodes where the validation criteria fails.

Abstract: A system includes a first switch fabric portion and a second switch fabric portion. The first switch fabric portion is disposed within a first chassis and has a module associated with a first stage of a switch fabric and a module associated with a second stage of the switch fabric. The module of the first switch fabric portion associated with the first stage of the switch fabric is configured to send data to the module of the first switch fabric portion associated with the second stage of the switch fabric. The second switch fabric portion is disposed within a second chassis and has a module associated with the second stage of the switch fabric. The module of the first switch fabric portion associated with the first stage of the switch fabric is configured to send data to the module of the second switch fabric portion associated with the second stage of the switch fabric.

Abstract: Techniques are described for routing data frames using a distributed virtual bridge in a highly integrated networked system. The distributed virtual bridge creates and manages a type of LAG referred to as “unified link aggregation group” (ULAG). Two or more link aggregation groups that span multiple physically-separated switches or chassis (referred to as MLAGs) are unified or aggregated to form a ULAG. Applications view the ULAG as a single logical link, and as long as at least one of the sub links in any of the MLAGs that are part of the ULAG is operational, network connectivity is maintained.

Abstract: A system and method for communicating alarms. Packets are communicated through multiple maintenance entities in one or more networks. A determination is made that there is a failure between or at one of the multiple maintenance entities in the one or more networks. An alarm is generated at a maintenance entity nearest the failure in response to determining there is a failure. The alarm indicates a location of the failure and an identification of a communications service provider associated with the failure. The alarm is communicated back through one or more of the multiple maintenance entities to a maintenance end point. The alarm is routed to at least a communications service provider determined to be associated with the failure.

Abstract: A data transfer system includes: a plurality of processors; and a plurality of data transfer units that executes a data transfer from one processor to another processor via a plurality of input ports and a plurality of output ports. The data transfer unit includes: an arbitration unit that executes arbitration of conflicting data sent to a same next destination; and a strength information notification unit that sends strength information indicating a number of conflicts of the arbitrated conflicting data to the next destination. The arbitration unit decides a selection ratio, which is a ratio of selecting each of the input ports and receiving the conflicting data from the selected input port, according to a ratio between the input ports in relation to a magnitude of the number of conflicts indicated by the strength information received from each of the input ports.

Abstract: In a method for directing a computer network request to process through one or more components, a processor identifies a plurality of input/output (I/O) paths capable of serving a computer network request and a plurality of components along each path of the plurality of I/O paths. A processor predicts resource demands at each respective component of the plurality of components along each path of the plurality of I/O paths. A processor estimates expected delay times at each respective component of the plurality of components along each path of the plurality of I/O paths using predicted resource demands at each component. A processor determines an expected delay time for each path of the plurality of I/O paths based on the expected delay times at each respective component of the plurality of components along each path of the plurality of I/O paths.

Abstract: A data communication authentication system (10) and method are described. One or more locator nodes (20) are installable at a location (30), the or each locator node (20) including an identifier (21) and a communication system (22) and being arranged to provide said identifier via said communication system (22). The communication authentication system (10) is arranged to generate an authentication code for the location (30) in dependence on identifiers (21) from the one or more locator nodes at the location and is arranged to provide said authentication code on demand for inclusion in a data communication originating locally to said location (30).

Abstract: The present disclosure may include a method to be performed by an electronic device in an optical network. The method may include generating a message associated with a slot and at least one connection identification (ID) corresponding to the slot. The message may include a slot counter region configured to identify the slot, a request region configured to activate a protect path utilizing the slot, a connection ID counter region configured to identify the at least one connection ID, and a status region configured to convey status of the at least one connection ID corresponding to the slot. The method may also include transmitting the message to other electronic devices in the optical network. The disclosure also includes associated systems and apparatuses.

Abstract: A backbone network system for a vehicle enables high-speed and large-capacity data transmission between integrated control modules mounted in the vehicle, such that communication can be maintained through another alternative communication line when an error occurs in a specific communication line. The backbone network system enables various kinds of integrated control modules mounted in the vehicle to perform large-capacity and high-speed communications, based on Ethernet communication, by connecting domain gateways of the integrated control modules through an Ethernet backbone network, and provides a fast fail-safe function so that domain gateways can perform communications through another communication line when an error occurs in a communication line between the domain gateways.