Entries |
Document | Title | Date |
20080198740 | Service take-over system of multi-host system and method therefor - A service take-over system of a multi-host system and a method therefor are provided, in which the multi-host system includes a service host and at least one standby host with their operating state monitored mutually via a heartbeat mechanism. When the service host for providing a service externally fails, an external public IP address for providing a service externally of the service host is taken over to a standby host. A service environment required for taking over the service of the service host to the standby host is prepared. The preparation state of the service environment is detected, and access request data packets via the external public IP address to the service are dropped before the service environment gets ready. The service is taken over after the service environment is ready, and the access request data packets to the service are received, so as to provide the service externally. | 08-21-2008 |
20080205265 | TRAFFIC ROUTING - A method may include forming a primary label switching path (LSP) from a first node to a second node, where the primary LSP has a path metric that is less than a predetermined value. The method may also include detecting a failure in the primary LSP and identifying a second path from the first node to the second node that has a path metric that is less than the predetermined value. The method may further include routing data via the second path in response to the failure in the primary LSP. | 08-28-2008 |
20080219151 | SYSTEM AND METHOD FOR USING A PEER TO PEER MECHANISM TO REPAIR BROADCAST DATA IN WIRELESS DIGITAL BROADCAST NETWORKS - An improved system and method for repairing and/or retrieving lost or crushed data, such as files carried by the FLUTE protocol, by using a P2P network in wireless digital broadcast networks. According to various embodiments, when a peer device has failed to receive a data packet from operator, or when a data packet contains errors, the peer device sends a Search request to neighboring devices. The neighboring devices can either return the data packet in integrated form to the peer device or, if they do not possess the data packet in integrated form, reroute the request to other devices. Mechanisms are also provided for each peer device to maintain and update a table of neighboring devices including an identification of the devices and their connection capabilities. | 09-11-2008 |
20080225701 | ELECTRONICS APPARATUS, A MANAGEMENT DEVICE FOR AN ELECTRONICS APPARATUS AND A METHOD OF MANAGING AN ELECTRONICS APPARATUS - An electronics apparatus comprises an electronic device having at least first and second ports in communication with respective first and second communication paths by each of which communications can be made with the electronic device. The electronics apparatus comprises a management device arranged to collect information concerning the performance of the first and second ports and to apply a decision threshold to said information to decide whether or not each port has failed. If said decision is that the first port has failed, the management device is arranged to disable communication over the first communication path and to adjust the decision threshold for the second port. | 09-18-2008 |
20080225702 | SYSTEM AND PROGRAM PRODUCT TO RECOVER FROM NODE FAILURE/RECOVERY INCIDENTS IN DISTRIBUTED SYSTEMS IN WHICH NOTIFICATION DOES NOT OCCUR - Epoch numbers are maintained in a pair wise fashion at a plurality of communication endpoints to provide communication consistency and recovery from a range of failure conditions including total or partial node failure and subsequent recovery. Once an epoch state inconsistency is recognized, negotiation procedures provide an effective mechanism to reestablish valid communication links without the need to employ global variables which inherently possess greater transmission and overhead requirements needed to maintain communications. Renegotiation of recognizably valid epoch numbers occurs on a pair wise basis. | 09-18-2008 |
20080232245 | Transmission apparatus - A transmission apparatus includes an active programmable device; a standby programmable device upgrading the version; an external memory part that includes a table memory and a main signal memory and that is shared between the two programmable devices; and a switching part that selects either of the main signals processed by the two programmable devices to transmit the selected main signal to an output path. The active programmable device is capable of processing the main signals in parallel with the standby programmable device and receives a notification of completion of the version upgrade from the standby programmable device to issue an instruction to start switching to the standby programmable device. The standby programmable device uses the table memory and the main signal memory updated by the active programmable device to process the main signals in response to the instruction to start the switching. | 09-25-2008 |
20080259788 | Method For Routing Mobile Node In Wireless Mesh Network And A Communication System Thereof - A wireless mesh network includes several mesh networks and the wireless mesh network access points to which the mesh networks belong. A method establishing backbone routing and network tolopogy among each wireless mesh network access points, selecting one said wireless mesh network access point as a location inquiry sever for all the mesh networks, and acquiring the corresponding relations between all the mesh networks in the wireless mesh network and the wireless mesh network access points to which the mesh networks belong. When said mesh network needs to transmit data, the access point inquires the location inquiry server for the wireless mesh network access point which the destination mesh network belongs to, and performs routing based on the network topology. | 10-23-2008 |
20080273457 | SYSTEMS, METHODS, AND PROTOCOLS FOR PROCESS MIGRATION AND GROUP MEMBERSHIP MANAGEMENT - A system, method, and set of protocols for dynamic group communication are provided for enabling dynamic process migration and dynamic group membership management. A process in a group receives and distributes a migration signal. Group communication continues while the processes in the group asynchronously reach a global superstep and then a synchronization point. The processes then spawn a new process on a new device and update group membership information. The new process operates in continuous execution with the new group. | 11-06-2008 |
20080279096 | LIGHTWEIGHT NODE BASED NETWORK REDUNDANCY SOLUTION LEVERAGING RAPID SPANNING TREE PROTOCOL (RSTP) - A method for dynamic path failover in a network with two or more redundant and interconnected bridges, is described. A first bridge operates as a root bridge and each node includes two ports where each port is coupled to a respective one of the bridges. The method includes defining a bridge identifier at a node which presents the node as a capable bridge to the two or more fully compliant, RSTP enabled MAC bridges, forwarding a BPDU message from the node that defines the node as an inferior alternate path to the root bridge, facilitating the dynamic sensing of the absence of communication between the root bridge and the node, receiving a topology change message at the node from the second redundant bridge, and sending an agreement message from the node to the second redundant bridge such that the node automatically begins receiving messages from the second redundant bridge. | 11-13-2008 |
20080285439 | Method and System for Protecting a Communication Network, Said Communication Network Including a Transport Network - The invention relates to a system for protecting a communications network comprising a transport network ( | 11-20-2008 |
20080310299 | Virtual Path Restoration Scheme Using Fast Dynamic Mesh Restoration in an Optical Network - A method for restoring a virtual path, provisioned between a source and a target node, in a mesh zoned optical network is described. The method, in one embodiment, broadcasts or floods restore path requests in the network to expedite the identification of an alternate route and minimize the service disruption for failed virtual path. The flooding of requests is controlled to ensure efficient performance of the network yet guaranteeing minimum restoration time to allow critical telecommunication related traffic to flow through the network with virtually no interruption. The constant update of nodal topology by each node allows a fast identification of alternate physical path for failed virtual path. | 12-18-2008 |
20080316917 | Method of Generating Spanning Trees - A method of generating spanning trees in a network in which a plurality of network nodes are interconnected by links. The spanning trees are utilized for handling link and node failures. For link failures, each link has at least one tree that does not include that link. For node failures, each node has at least one tree to which the node is connected by a single link. A first spanning tree connects all of the nodes, and from each node one link is left unconnected. A second spanning tree includes all of the nodes and all of the unconnected links. Thus, none of the links is included in both trees. If a node failure prevents other nodes from communicating, a third spanning tree is needed. The method minimizes the number of required trees in large networks of any topology and can be implemented off-line. | 12-25-2008 |
20090003197 | Isolation of unverified devices in a SAS expander - When a new device is attached to a SAS expander, malfunctioning devices can cause many BCNs to be generated, which in turn can cause excessive re-discovery processes to be performed by initiators in a storage network. Therefore, the isolation of devices from the storage network until they can be validated as healthy is disclosed. Any device malfunctions during this time of isolation do not cause BCNs to be generated and do not cause re-discovery processes to be performed. Once the device is validated (via a port-test-before-insertion approach) and found to be healthy, the fabric is notified via a BCN, and the device can be made visible to the network. | 01-01-2009 |
20090034411 | AUTOMATED DIAGNOSTICS AND TROUBLESHOOTING MECHANISM FOR END-USERS AND TECHNICIANS - A method, apparatus, system, and computer-readable program, for operating a communication network that supports a plurality of types of communication services, such as video, voice, and data services. According to an example embodiment of the invention, the method includes detecting an operating condition affecting any of the communication services within the network, and providing a notification of the operating condition, by way of at least one of the communication services not affected by the operating condition. This notification can be provided in response to a request from a network component or a user, or in response to the detection. The method enables end-users and technicians to troubleshoot service problems based on the notification, which can be forwarded via a service not affected by the condition. | 02-05-2009 |
20090046578 | Method and apparatus for radio link failure recovery in a wireless communications network - In a wireless network, for example, an LTE network, the context information relating to a mobile terminal UE is transmitted to a plurality of network nodes eNB | 02-19-2009 |
20090086623 | METHOD, SYSTEM AND DEVICE FOR PROCESSING FAILURE - A method, a system, and a device for processing failure is provided; the method is applicable to a label switched path (LSP) including a first node, a second node, and at least one third node. The first node and the second node are adjacent nodes suffering communication breakdown. The first node restarts. The third node is a normal node closest to the restarted first node. When the communication between the first node and the second node is broken, the third node maintains control state information of the LSP in certain time. When the communication between the first node and the second node is recovered in the certain time, the first node, the second node, and the third node recover the control state information of the LSP. A failure processing system and a device on LSP are further provided. Therefore, when several nodes on the LSP suffer communication failures, the LSP can be reliably recovered. | 04-02-2009 |
20090103430 | SYSTEM AND METHOD OF MANAGING FAILOVER NETWORK TRAFFIC - A system and method of managing failover network traffic is disclosed. In one form, a method of managing network traffic can include accessing a failover policy of a plurality of network interface controllers, and detecting a failover event of at least one of the plurality of network interface controllers. The method can also include identifying a first network traffic using the failover policy, and enabling communication of the first network traffic using a non-failed network interface controller of the plurality of network interface controllers. | 04-23-2009 |
20090135716 | COMMUNICATION AND MESSAGE ROUTE OPTIMIZATION AND MESSAGING IN A MESH NETWORK - A method and system facilitate communications between an unassociated device and a server via a mesh network and a wide area network. The method may include receiving transmissions from candidate proxy devices, wherein each candidate proxy device is associated with a mesh network. The method may include selecting a proxy device from the candidate proxy devices. The method may include communicating with a server via the proxy device and the associated mesh network. | 05-28-2009 |
20090154343 | Apparatus and method for adapting to failures in gateway devices in mesh networks - Various embodiments provide an apparatus and method for adapting to failures in gateway devices in mesh networks. An example embodiment is configured to provide a plurality of interconnected nodes in a mesh network, at least one node of the plurality of nodes being designated a primary node, the primary node providing timing synchronization for other nodes of the plurality of nodes; and the primary node to designate another one of the plurality of nodes as a secondary node, the secondary node only providing timing synchronization for other nodes of the plurality of nodes when the primary node fails to provide the timing synchronization. | 06-18-2009 |
20090154344 | WIRELESS COMMUNICATION SYSTEM, COMMUNICATION TERMINAL AND STORAGE MEDIUM STORING WIRELESS COMMUNICATION PROGRAM - A wireless communication system comprises a control terminal and a controlled terminal, the control terminal comprises a control information transmitter transmitting the control information, a response information receptor receiving response information, a selector selecting the controlled terminal to become a new control terminal, a request information transmitter transmitting request information, and a controlled terminal transition device stopping the control terminal being the control terminal and transfers to become the controlled terminal, and the controlled terminal that operates based on the control information transmitted a control information receptor receiving the control information, a response information transmitter transmitting the response information, an operation execution device performing an operation prescribed by the control information, a request information receptor receiving the request information, an acceptance information transmitter transmitting the acceptance information, and a control terminal transition device stopping the controlled terminal being the controlled terminal and transfers to become the control terminal. | 06-18-2009 |
20090161535 | Resilient PPP/ML-PPP services over multi-chassis APS protected routers - A system and method for resilient communication services under multi-chassis APS protected routers, including one or more of the following: an add-drop multiplexer; a working chassis; a plurality of working lines of communication between the add-drop multiplexer and the working chassis; a protection chassis; a plurality of protection lines of communication between the add-drop multiplexer and the protection chassis; and a multi-chassis APS control link between the working chassis and the protection chassis, wherein a plurality of active entities in the working chassis having state information send their state information to parallel inactive entities in the protection chassis by way of the multi-chassis APS, ones of said active entities send changed state information to parallel ones of said inactive entities through said multi-chassis APS control link upon a state change in said ones of said active entities, and ones of said inactive entities that were down request current state information from said active entities through said multi-chassis APS control link when said ones of said inactive entities that were down come back up after being down. | 06-25-2009 |
20090161536 | SELF-FAULT ISOLATION IN TRANSPARENT p-CYCLE NETWORKS - Span protection has advantages in speed, locality of action and simplicity but requires that the failed span be located in real time. Recent work proposed rapid fault-localization via monitoring cycles (m-cycles). Span-protecting structures (such as p-cycles) operate and are designed separately from the monitoring cycles in this architecture. We have invented a means of designing survivable networks wherein a span protecting p-cycle network inherently includes the properties of a set of fault localizing m-cycles at zero or minimal additional network design cost. Results show that this can be achieved with the same localization effectiveness as separately designed m-cycle solutions, at little or no extra cost. | 06-25-2009 |
20090175164 | METHOD AND APPARATUS FOR FAILURE RESILIENT FORWARDING OF DATA OVER A COMPUTER NETWORK - In one embodiment, the present invention is a method and an apparatus for failure-resilient forwarding of data over a computer network. In one embodiment, a marker is introduced into the data stream, e.g., at the sending node, and allows, in turn, forwarding nodes and/or receivers to efficiently track data stream reception. The marker functions as a checkpoint for the data transport process, and is identified and indexed at each forwarding node and receiver. Each receiver saves the marker prior to delivering data to an application, thereby designating a point in the data stream at which all preceding data is confirmed to have been delivered to the application. Thus, if a forwarding node fails, the receiver may request stream data from an alternate forwarding node by specifying to the alternate forwarding node to provide data starting from the marker. | 07-09-2009 |
20090175165 | Method for Enabling Communication Between Two Network Nodes via a Network Address Translation Device (NAT) - A method is provided for enabling communication between first and second network nodes ( | 07-09-2009 |
20090185483 | Method and Apparatus for Transmitting Data and Error Recovery - A system and method for partitioning and transmitting a frame configuration in a wireless communication system is provided. A preferred embodiment comprises a method for determining a frame configuration in H-FDD systems where multiple time domain groups are supported is disclosed. Another embodiment provides a method for a base station for transmitting an indication of a frame configuration in H-FDD systems where multiple time domain groups are supported. Further, if the mobile stations enter into an error condition because they did not receive the frame configuration, an error recovery process may be utilized to self-recover from the error condition. | 07-23-2009 |
20090196170 | QUALITY OF SERVICE, POLICY ENHANCED HIERARCHICAL DISRUPTION TOLERANT NETWORKING SYSTEM AND METHOD - According to an embodiment, a method includes a Delay Tolerant Network (DTN) software overlay residing in a first plane of a node of the network is used to define hierarchical forwarding behavior for data being generated in the first plane. In a second plane of the network, local buffering and data retransmission is performed in response to at least one intermittent network outage. Communication between the first and second planes is performed to manage the transmission of data between the first and second planes as needed in the event of at network outage that is longer in duration than the at least one intermittent network outage, to thus prevent the loss of data. | 08-06-2009 |
20090201801 | Mobile Communication System - To provide a method and an apparatus for achieving a cell redundancy. Base stations, to which different frequency bands are assigned, have active base-station transmitter-receivers with a predetermined number of wireless zones repeated. Some base stations also have standby base-station transmitter-receivers at the rate of one in every predetermined number of sites that have the predetermined number of wireless zones. Under a normal condition, the different frequency bands, which are obtained by dividing a predetermined frequency bandwidth by the predetermined number of the wireless zones, are established at the respective base stations in the respective wireless zones. Under a troublesome condition, different frequency bands, which are obtained by dividing the predetermined frequency bandwidth by the predetermined number of the wireless zones plus the predetermined number of the sites, are assigned to base stations in the respective wireless zones and to base stations that are positioned on the periphery of a wireless zone where the trouble has occurred and that have the standby base-station transmitter-receivers. Further, the output powers of the standby base-station transmitter-receivers of the base stations, which are positioned on the periphery of the wireless zone where the trouble has occurred, are adjusted such that the output powers are overlaid on the wireless zone where the trouble has occurred. | 08-13-2009 |
20090201802 | METHOD FOR REDIRECTING NETWORK COMMUNICATION PORTS AND NETWORK COMMUNICATION SYSTEM THEREOF - A method for redirecting network communication port and a network communication system thereof are disclosed. When a receiving end determines that a communication port needs to be redirected, the receiving end sends a redirected address to a transmitting end via a communication port. The redirected address includes redirected address information of a transport layer. According to the present invention, when the gatekeeper is not able to receive, via a well-known port, some of signaling sent from a node, the gatekeeper can inform the transmitting end to switch the port automatically, allowing thereby the node to continue the previous service. The present invention further allows the node to perform protocol switching automatically. | 08-13-2009 |
20090219807 | METHOD AND ROUTER FOR CONTROLLING GRACEFUL RESTART STATUS - A method for controlling the Grace Restart (GR) status is disclosed. The method includes: entering a GR status when a router detects that neighbor relationship with a neighbor router breaks and the router itself does not restart; receiving a neighbor relationship establishing message sent by the neighbor router; and quitting the GR status when the router detects that the message does not indicate a restart of the neighbor router. A router is also disclosed. The router includes a neighbor relationship testing module restart testing module, a relationship message receiving and processing module and a GR module. The solution is able to detect timely that a router mistakenly enters a Grace Restart status. Thus, unnecessary signaling and data interaction are reduced, and CPU resource is less occupied. In addition, a newly generated routing can be delivered to the LSP, which improves the rate of a success data transfer. | 09-03-2009 |
20090245098 | FAILOVER/FAILBACK TRIGGER USING SIP MESSAGES IN A SIP SURVIVABLE CONFIGURATION - Provided are methods, devices, and systems for maintaining a SIP survivable network. The present invention may utilize messages, such as SIP NOTIFY messages, to trigger various network components to failover and failback based on the determined status of the SIP network. | 10-01-2009 |
20090245099 | REPEATER AND COMMUNICATION METHOD - A repeater for sending and receiving a routing message for changing routing information determines whether a routing message received from a first adjacent repeater which is disposed adjacent to the repeater is to be sent or not. If it is judged that the routing message is not to be sent, then the repeater generates a pseudo-routing message and sends the generated pseudo-routing message, instead of the routing message received from the first adjacent repeater, to a second adjacent repeater which is disposed adjacent to the repeater. | 10-01-2009 |
20090257347 | Spatial Clustering - A method for providing redundancy within a communication network, the method provides means for using the same IP address with a plurality of hosts located in different subnets, non-simultaneously, without requiring any additional programming for routers in the network. | 10-15-2009 |
20090285090 | Method and System for Providing User Access to Communication Services, and Related Computer Program Product - A system for providing to users of data communication services access to a communication network providing these services, includes an edge node of the communication network providing these services as well as a packet network, such as, an ethernet connecting the users to the edge node. The packet network is equipped with operation and maintenance procedures for preserving edge connectivity over the packet network. The edge node has associated therewith a backup edge node providing access to the communication network. Preferably, the backup edge node is reachable by the users via the packet network by using an address common to the edge node and the backup edge node associated therewith. In the presence of failure of the edge node, connection is established between the users and the backup edge node by applying the operation and maintenance procedures. Preferably, this, occurs by using the address common to the edge node and the associated backup edge node. | 11-19-2009 |
20090290485 | DISTRIBUTED COMMUNICATION SYSTEM AND CORRESPONDING COMMUNICATION METHOD - In order to further develop a communication system ( | 11-26-2009 |
20090296566 | SYSTEMS AND METHODS TO MONITOR AND ANALYZE CUSTOMER EQUIPMENT DOWNTIME IN A VOICE OVER INTERNET PROTOCOL (VOIP) SERVICE NETWORK - Systems and methods to monitor and analyze customer premises equipment downtime in a Voice over Internet Protocol service network are disclosed. An example method comprises receiving an indication of an internet protocol (IP) address change, determining whether a network transaction is a failed network transaction associated with the IP address change, and when the network transaction is a failed network transaction associated with the IP address change, storing the failed network transaction to a database entry associated with the IP address change. | 12-03-2009 |
20090296567 | SYSTEMS AND METHODS TO MINIMIZE CUSTOMER EQUIPMENT DOWNTIME IN A VOICE OVER INTERNET PROTOCOL (VOIP) SERVICE NETWORK - Systems and methods to minimize customer premises equipment downtime in a Voice over Internet Protocol service network are disclosed. An example method comprises receiving a replacement internet protocol (IP) address to replace a first IP address in a residential gateway associated with a first network service provider, sending a re-authenticate message from the residential gateway to a customer premises equipment associated with a second network service provider, and receiving the re-authenticate message in the customer premises equipment. | 12-03-2009 |
20090296568 | Edge Node Redundant System - A client terminal at one location a is accommodated in an edge node (gateway) having a redundant configuration composed of a primary node and a secondary node. Normally a primary edge node PE A is used to enable communications with partner client terminals at locations b and c via opposing edge nodes PE B and PE C. Normally, a database storing the information of a label used by the primary edge node is synchronized with the database of the secondary edge node. A primary loopback address is stored in the secondary edge node and nullified. When the primary edge node fails, the loopback address of the primary edge node is validated and the secondary edge node restarts communications with the opposing edge nodes using the information of the database storing the information of the label used by the primary PE and the same label as the primary edge node. | 12-03-2009 |
20090316573 | SYSTEM AND METHOD FOR TRANSMITTING MESSAGES USING A REDUNDANCY MECHANISM - A system for transmitting messages using a redundancy mechanism includes an active main processing unit (MPU) and a standby MPU. The active MPU is used to receive a request message sent from an end-user device and send the request message to a router connected with the active MPU. When the active MPU cannot work normally, the standby MPU is activated as a new active MPU. The new active MPU transmits the request message instead of the active MPU. | 12-24-2009 |
20100002577 | GRACEFUL REMOVAL AND/OR INSERTION OF A NETWORK ELEMENT - In one embodiment, when a network element is to be removed from or inserted into a network a Graceful Operations Manager schedules graceful shut-down and/or start-up routines for different protocols and/or components on the network element in an optimal order based on dependencies between the different protocols and components. The Graceful Operations Manager communicates with the different components at different stages of their shut-down or start-up process and communicates information on the standby topology across components and/or protocols to enable the synchronization of the standby topology computation on all components and/or protocols that are affected by the removal or insertion. | 01-07-2010 |
20100034080 | METHOD AND NETWORK CONTROL UNIT FOR DEACTIVATING A NETWORK COMPONENT - The invention relates to a method and to a network control unit for deactivating a network component for example, one or several connections or an entire network node, the method being used to carry out deactivation in simple manner without impairing the traffic and optionally, the reliability. The invention also relates to a method for deactivating a network component, in particular one or several connections and/or a network node in a communication network including a plurality of network components. The method includes: a) the network components which are to be deactivated are identified; b) a new metric set (M | 02-11-2010 |
20100054120 | APPARATUS AND METHOD FOR CLUSTER RECOVERY - Apparatus for non-disruptive error recovery in a clustered system, comprises a node instance configuration activity quiescing component for quiescing configuration activity at a first virtual node instance; a node instance creation component for creating a second virtual node instance with I/O access blocked; a configuration transfer component for transferring configuration data from the first to the second virtual node instance; a commit component for committing the changeover from the first to the second virtual node instance; a node instance communications blocking component for blocking inbound communications to a first virtual node instance; a node instance communications unblocking component for unblocking I/O access at the second virtual node instance; a communication control component for monitoring outbound communications from the first virtual node instance and signalling completion of all pending outbound communications; and a node instance deletion component for deleting the first virtual node instance. | 03-04-2010 |
20100054121 | COMMUNICATION APPARATUS AND CONTROL METHOD THEREOF - A communication apparatus (receiving apparatus) configured to receive a communication parameter selects, when an access point itself is active as a providing apparatus or the communication apparatus detects an access point (active access point) that is communicable with an active providing apparatus, the access point as the access point to be connected using wireless connection. If the communication apparatus does not detect an active access point, the communication apparatus selects an access point (setup-completed access point) which is configured with a communication parameter that is different from the one that is set at the time of initialization, as the access point to be connected using wireless connection. | 03-04-2010 |
20100061227 | Method to reduce routing convergence at the edge - In a network comprising a provider edge router coupled to each of a mated pair of core routers in a core network, a system and methodology for rerouting upstream traffic destined for the provider edge router in the event of a link failure between one of the core routers and the provider edge router. By detecting a link failure between a first of the mated pair of core routers and the provider edge router, and directing the upstream traffic destined for the provider edge router to a second of the mated pair of core routers, internal gateway protocol (IGP) reconvergence events are not triggered. | 03-11-2010 |
20100061228 | METHOD AND APPARATUS FOR PSTN-BASED IP ACTIVE CALL RECOVERY AND RE-ROUTING - A method and system for rerouting IP telephony call information. The system includes an existing IP telephony call, the telephony call originating at a first IP telephony phone. A second IP telephony phone receiving the IP telephony call from the first IP phone and a network routing condition, the routing condition causing the IP telephony call to be rerouted. A switchover instruction, the switchover instruction initiating a switchover of the existing IP telephony call to a PSTN. | 03-11-2010 |
20100074100 | PROXY SERVER, COMMUNICATION SYSTEM, COMMUNICATION METHOD AND PROGRAM - A proxy server in an SIP network includes the common SIP proxy server function | 03-25-2010 |
20100074101 | Distributed Connection Establishment and Restoration - Connection constraints are flooded using an extension to a routing protocol being used to control forwarding on network. Nodes maintain topology and connection database and calculate routes for connections based on the constraints. If a node is on a calculated route for a connection it will install forwarding state for the connection. Since each node has a consistent view of the network topology and has been provided with the constraints associated with the connection, each node on the network will calculate the same route for the connection. When a failure occurs, the nodes will calculate restoration paths for the connections on a network-wide priority basis to enable restoration paths to be created for the affected connections without requiring the restoration paths to be signaled. Time-stamps are used to allow events to be applied by nodes in a consistent order regardless of the order in which they arrive. | 03-25-2010 |
20100080118 | Radio network system and control node switching method - A radio network system and a control node switching method which can improve a reliability of the whole network and improve a wording efficiency. The system includes at least one alternate control node which can be substituted form the control node. The alternate control node monitors an operating state in the control node and discriminates whether or not the operating state is abnormal. When the operating state is determined to be abnormal, the alternate control node sets its own address into a control node address. | 04-01-2010 |
20100085870 | GLOBAL DETECTION OF RESOURCE LEAKS IN A MULTI-NODE COMPUTER SYSTEM - A process is disclosed for identifying and recovering from resource leaks on compute nodes of a parallel computing system. A resource monitor stores information about system resources available on a compute node in a clean state. After the compute node runs a job, the resource monitor compares the current resource availability to the clean state. If a resource leak is found, the resource monitor contacts a global resource manger to remove the resource leak. | 04-08-2010 |
20100085871 | RESOURCE LEAK RECOVERY IN A MULTI-NODE COMPUTER SYSTEM - A process is disclosed for identifying and recovering from resource leaks on compute nodes of a parallel computing system. A resource monitor stores information about system resources available on a compute node in a clean state. After the compute node runs a job, the resource monitor compares the current resource availability to the clean state. If a resource leak is found, the resource monitor contacts a global resource manger to remove the resource leak. | 04-08-2010 |
20100097928 | METHOD AND APPARATUS FOR INCREASING SURVIVABILITY IN IP NETWORKS - A method and apparatus for increasing the capability of a network topology model having a plurality of nodes connected by existing links to maintain service continuity in the presence of faults. The steps of the method include adding new links to the network topology model to protect against single node failures, and adjusting link weights for the network topology model to reduce at least one of a cost of network operation and an imbalance in link utilizations. Preferably, the link weights are adjusted to reduce the imbalance in link utilizations without deteriorating the cost of network operation. The link weights are preferably adjusted to reduce the cost of network operation without increasing the imbalance in link utilizations. Preferably, the link weights are adjusted to reduce the cost of network operation without increasing the imbalance in link utilizations while keeping the utilization for each link below a specific threshold. In addition, links can be added to the network topology model to reduce the cost of network operation. | 04-22-2010 |
20100110880 | Method for reconfiguring a communication network - A method for reconfiguring a packet-switched communication network using a network protocol for installing a logic topology of the network formed as a spanning tree is disclosed. The method includes detecting failure of a direct link to a root bridge of the spanning tree by a first bridge; detecting the failure of a direct link to the root bridge by a second bridge; transmitting a first configuration frame generated by the first bridge to other bridges; receiving the first configuration frame by a third bridge and transmitting a second configuration frame, generated by the third bridge, to the other bridges; detecting the first or second configuration frame by the second bridge and transmitting the third configuration frame generated by the second bridge to the other bridges; receiving the third configuration frame by the other bridges of the network and triggering a reconfiguration of the network with detection of a new spanning tree by the network protocol. | 05-06-2010 |
20100128600 | Automated Network Fault Analysis - A system that incorporates teachings of the present disclosure may include, for example, a controller to form inquiries and commands, receive an alarm at an Operational Support System (OSS), automatically capture a state of a failure of the network element as close as possible to a time of the failure in response to the alarm, and automatically lookup and run a command or a set of commands in response to the alarm for real time analysis of network element fault management data and network element performance data within the OSS for a network. Other embodiments are disclosed. | 05-27-2010 |
20100135153 | REDUNDANT SIGNAL TRANSMISSION - Signal transmission apparatus, systems, and methods are disclosed. In various embodiments, a signal transmission system includes a transmission network having signal paths configured to communicate signals from an input to an output, a first steering network coupled to the input that communicates with the transmission network, and a second steering network coupled to the output that communicates with the transmission network. A steering control network that receives error signals corresponding to an inoperable signal path and that generates steering signals directed to the first steering network and the second steering network is included, so that the steering signals shift signals to an alternate, operable signal path from the inoperable signal path. Additional apparatus, systems, and methods are disclosed. | 06-03-2010 |
20100177631 | Protecting Ingress and Egress of a Label Switched Path - An apparatus comprising a backup node coupled to an ingress node of a point-to-multipoint (P2MP) label switched path (LSP) and to a plurality of next-hop nodes of the ingress node of the P2MP LSP via a backup tree, wherein the backup node and the ingress node are both coupled to an external node, and wherein the backup node is configured to ensure data delivery in the P2MP LSP when the ingress node fails. Included is a network component comprising at least one processor configured to implement a method comprising detecting a failure in an ingress node of a P2MP LSP, receiving a data packet destined for the ingress node and to be transported by the P2MP LSP from a provider node when the ingress node fails, and transmitting the data packet on a backup tree that merges with the P2MP LSP prior to reaching an egress node. | 07-15-2010 |
20100208582 | SYNCHRONIZING PACKET SEQUENCE NUMBERS FOR LINE CARD REDUNDANCY - Exemplary embodiments relate to a network node implementing redundant cards and configured to synchronize sequence numbers, and a related method. The network node may include a fabric configured to route packets towards a destination. Furthermore, the network node may include an active card configured to establish at least one link to a destination node, generate a sequence number for each packet to be sent, and send a messaging packet including at least one sequence number from the active card to inactive cards over a communication channel on a data path in the fabric. Finally, the network node may include an inactive card configured to receive the messaging packet including the at least one sequence number from the active card over the communication channel, extract the at least one sequence number, and synchronize operation of the inactive card to the active card using the at least one sequence number. | 08-19-2010 |
20100214908 | Mechanism for Transparent Real-Time Media Server Fail-Over with Idle-State Nodes - In one embodiment, a mechanism for transparent real-time media server fail-over with idle-state nodes is disclosed. In one embodiment, a method includes replicating a start time of a request related to a bidirectional stream of media sent to an original master media server, receiving notification of selection as a new master media server after failure of the original master media server, determining an offset time by subtracting the replicated request start time from a current time, and resuming playback of the request at the offset time within the request. | 08-26-2010 |
20100232288 | Takeover of a Failed Node of a Cluster Storage System on a Per Aggregate Basis - A cluster comprises a plurality of nodes that access a shared storage, each node having two or more partner nodes. A primary node may own a plurality of aggregate sub-sets in the shared storage. Upon failure of the primary node, each partner node may take over ownership of an aggregate sub-set according to an aggregate failover data structure (AFDS). The AFDS may specify, an ordered data structure of two or more partner nodes to take over each aggregate sub-set, the ordered data structure comprising at least a first-ordered partner node assigned to take over the aggregate sub-set upon failure of the primary node and a second-ordered partner node assigned to take over the aggregate sub-set upon failure of the primary node and the first-ordered partner node. The additional workload of the failed primary node is distributed among two or more partner nodes and protection for multiple node failures is provided. | 09-16-2010 |
20100232289 | AUTOMATIC NETWORK CONNECTION DEVICE AND METHOD THEREOF - An automatic network connection device includes a first connection port, a second connection port, a first network connection unit, a second network connection unit, a control unit, and a switching unit. When the first network connection unit operates normally, the switching unit electrically connects the first network connection unit to the first connection port, such that the first network connection unit transmits and receives a network signal. When the first network connection unit fails, the switching unit switches the first connection port to be electrically connected to the second network connection unit, such that the second network connection unit transmits and receives the network signal. | 09-16-2010 |
20100246384 | Method and system for providing voice survivability - A system for controlling telecommunication equipment configured to provide voice survivability within a telecommunication network comprises a call server monitoring apparatus, a call server management apparatus, and a call server management apparatus. The call server monitoring apparatus is configured for monitoring a connectivity status of a call server. The penalty management apparatus is configured for managing a current accumulated penalty value of the call server. Managing the current accumulated penalty value includes adjusting the current accumulated penalty value dependent upon both the connectivity status and elapsed-time. The call server management apparatus is configured for controlling operability of the call server dependent upon the current accumulated penalty value. | 09-30-2010 |
20100271934 | METHOD AND APPARATUS TO ENABLE A HYBRID SYNCHRONOUS/ASYNCHRONOUS ROUTING PROTOCOL - A hybrid routing protocol may be provided. A disruption tolerant mechanism may be provided for analyzing a network, detecting a disruption between nodes of the network, and activating a disruption tolerance mechanism in response to the network disruption. The disruption tolerance mechanism may comprise designating a non-disrupted network node as a cache node and routing traffic addressed to the disrupted node to the cache node for storage. Once the disrupted network node recovers from the disruption, the cache node may deliver the stored traffic to the disrupted network node. | 10-28-2010 |
20100278039 | METHOD TO BLOCK SPLIT PHONE AND GATEWAY REGISTRATION - The present disclosure is directed to a method and system to forcibly unregister and/or prevent registration of a gateway and/or other endpoint in a network region in response to a survivable gatekeeper servicing the network region becoming active. | 11-04-2010 |
20100284269 | Multi-Node State Recovery for a Communication Network - Node recovery in a communication network, includes determining whether a heartbeat message is received by a first node from a second node upstream of the first node within a heartbeat timeout threshold of the first node in response to an occurrence of a fault condition at the first node. In response to determining that the heartbeat message is not received within the heartbeat timeout threshold, a probe message may be communicated to one or more third nodes downstream of both the first node and the second node, wherein receipt of the probe message by one of the third nodes is operable to prevent deletion of previously-committed resources at the third node and associated with the second node. | 11-11-2010 |
20100309779 | Carrier sense multiple access (CSMA) for multiple user, multiple access, and/or MIMO wireless communications - Carrier sense multiple access (CSMA) for multiple user, multiple access, and/or MIMO wireless communications. In wireless communication systems that operate in supporting communications via one or more clusters, appropriate determination of when to begin making such transmissions on one or more clusters is made in accordance with intelligent carrier sense multiple access (CSMA) that may be performed in a number of different ways. In accordance with this, a cluster may be any combination composed of one or more channels among one or more bands. In supporting multi-cluster access, CSMA may be performed in selecting a primary cluster and performing backoff (e.g., countdown) thereon. After backoff is finished for the primary cluster, and the availability of one or more others clusters is checked, transmissions may be made using the available clusters. Alternatively, backoff may be made for each or multiple (a subset of) clusters or even individually for each respective cluster. | 12-09-2010 |
20100315943 | INTERNET PROTOCOL FAST REROUTE FOR SHARED RISK LINK GROUP FAILURE RECOVERY - A scheme to achieve fast recovery from SRLG failures in the IP layer is described. An exemplary scheme, called multi-section shortest path first (“MSSPF”), builds on the idea of IP Fast Reroute (“IPFRR”), guarantees 100% recovery of SRLG failures and causes no dead loops. Given a source node, a destination node, and a shared risk group failure on a next hop from the source node to the destination node, failure recovery information may be determined by (1) accepting a graph representing network topology information including the source node and the destination node, (2) determining a node which is able to reach the destination node using a route which does not include the source node, wherein a path from the source node to the determined node is not affected by the shared risk group failure, and (3) storing, in association with the shared risk group failure, both (i) a network address associated with the determined node and (ii) an alternative output port of the source node using the shortest path from the source node to the determined node. | 12-16-2010 |
20100315944 | Distributed Protection Switching Architecture for Point-To-Point Microwave Radio Systems - A system and method for protecting a received data stream. Active receivers and standby receivers are provided, each adaptable to receive a data stream on a traffic channel. Plural data processing units are operatively in communication with the receivers. At least one of the plural DPUs provides a switching signal to the receivers to switch the state of the active receiver to standby and the state of the standby receiver to active as a function of a quality measurement of the received data stream via the traffic channel. | 12-16-2010 |
20100315945 | METHOD, APPARATUS, AND COMPUTER PROGRAM PRODUCT FOR PROVIDING DEVICE MONITORING IN A NETWORK - A network side apparatus for providing device monitoring in a network includes a processor configured to establish communication between a client device and a network, receive instructions to monitor an availability of at least one other node of the network from the client device, and provide, from a communication device, reports indicating the availability of the at least one other node to the client device. A corresponding method is also provided. A client side apparatus and method are also provided. | 12-16-2010 |
20110026396 | DATA PROCESSING DEVICE - This invention provides a data processing device capable of operating a plurality of processing modules in parallel. Processes following a processing flow are assigned to the plural processing modules, respectively, and at least two of the processing modules are capable of running a same process. A network includes an arbitration circuit that, upon receiving a packet from a processing module, according to a process number attached to the packet, selects a processing module out of the processing modules capable of running the process, and outputs the packet to the selected processing module. This thus allows for autonomous transfer of a packet between each processing module and makes it possible to operate the processing modules in parallel. | 02-03-2011 |
20110032815 | MOBILE COMMUNICATION SYSTEM, MOBILE STATION, BASE STATION, AND HANDOVER CONTROLLING METHOD - A mobile station measures reception quality levels of individual peripheral cells of a source cell and transmits information of the measured reception quality levels of the individual peripheral cells to a source base station that manages the source cell. The source base station selects a group of cells that are to be handed over, based on the information of reception quality levels of the individual peripheral cells that is received from the mobile station, and transmits information of handover ready completion cells that are ready for handover in the selected group of cells to the mobile station. The mobile station selects a target cell that is to be handed over, based on the information of handover ready completion cells that is received from the source base station, and on the information of reception quality levels of the individual peripheral cells at that time. | 02-10-2011 |
20110038256 | RELIABLE AND RESILIENT END-TO-END CONNECTIVITY FOR HETEROGENEOUS NETWORKS - Embodiments of the present invention address deficiencies of the art in respect to connectivity management in a heterogeneous network and provide a method, system and computer program product for resilient and reliable end-to-end connectivity in a heterogeneous network. In one embodiment of the invention, a method for resilient and reliable end-to-end connectivity in a heterogeneous network environment can be provided. The method can include creating an instance of an abstracted network resource model (NRM) for a heterogeneous network environment of different network resource nodes. The method further can include binding an application endpoint in the instance of the abstracted NRM with a connectivity endpoint for a first of the different network resource nodes. The method yet further can include detecting an outage in the first of the different network resource nodes. Finally, the method can include re-binding the application endpoint to a second of the different network resource nodes in response to detecting the outage. | 02-17-2011 |
20110044164 | METHOD AND SYSTEM FOR HANDLING OUT-OF-ORDER SEGMENTS IN A WIRELESS SYSTEM VIA DIRECT DATA PLACEMENT - A method for processing information in a wireless system including a host device, the host device including a wireless network processor, the method including receiving by the wireless network processor, at least one out-of-order frame. The wireless network processor may place data of the received at least one out-of-order frame in a memory, and may manage information relating to one or more holes resulting from the at least one out-of-order frame in a TCP receive window. The wireless network processor may set a programmable limit with respect to a number of holes allowed in the TCP receive window. The memory may include a local memory outside of the host device and/or a host memory within the host device. | 02-24-2011 |
20110044165 | Method and Device for Processing Cell Out-Of-Service Failures - The present invention discloses a method for processing cell out-of-service failures, which includes: monitoring and receiving cell outage faults; and according to an obtained cell outage fault, automatically attempting to recover the cell when the fault is caused by malfunction of an entity and there is a redundant entity for replacement. The present invention also discloses a device for processing cell out-of-service failures, which comprises a failure monitoring module and an automatic failure recovering module. The present invention can be used to reduce the costs of operation and maintenance, to shorten the time of solving problems, and to improve the efficiency of failure processing. | 02-24-2011 |
20110051597 | TECHNIQUE FOR TESTING PEERS IN MULTICAST NETWORK DOMAIN - A technique for testing peer nodes in a multicast domain (such as an access network) interconnected with an Ethernet network via an Intermediate Bridge (IB), especially helpful when an individual MAC address of a destination peer node is unknown. The technique comprises a) issuing a Connectivity Fault Management (CFM) message from the Ethernet network, and introducing into the CFM message alternative destination data being different than the individual MAC address of the destination peer node; b) utilizing the alternative destination data, at the IB, for determining topological position or address of the destination peer node, and c) forwarding contents of the CFM message only to the destination peer node. | 03-03-2011 |
20110051598 | Loss Link Forwarding - The invention provides a loss link forwarding method for a telecommunications network having a first group of cables, a second group of cables corresponding to the first group, the first and second groups being connected via a network cable. The method comprises in the event of failure or disconnection of a cable from the first group, transmitting a failure signal to the second group indicating that said cable of the first group of cables has failed or been disconnected, and disabling only the or each corresponding cable of the second group. | 03-03-2011 |
20110069609 | TECHNIQUE FOR PROTECTING A POINT-TO-MULTIPOINT PRIMARY TREE IN A CONNECTED MODE COMMUNICATIONS NETWORK - The invention relates to a technique for protecting a point-to-multipoint primary tree in a connected mode communications network set up from a primary root node to leaf nodes in the event of a fault affecting the primary root node by means of a back-up tree between a back-up root node and at least one merge node, said at least one merge node belonging to a branch of the primary tree coming from the primary root node. A merge node executes the following steps:
| 03-24-2011 |
20110075553 | CORE NETWORK DISASTER RECOVERY ARCHITECTURE - System(s), method(s), and device(s) that enable recovery of a core network (e.g., UMTS, GSM) during a disaster or other disruption are presented. A service recovery controller component can monitor connectivity in the communication network, can detect a disruption or loss of connectivity in the packet-switched (PS) core network, and, when a disruption or loss of connectivity is detected, can automatically re-route data or voice traffic between a radio network controller(s) and an internet protocol (IP) multimedia subsystem (IMS) core network via a direct interface(s) to enable communications to continue between communication devices. The service recovery controller component can continue to monitor connectivity in the communication network, and can detect when connectivity is re-established with the PS core network. When connectivity is re-established, the service recovery controller component can route data or voice traffic via the PS core network. | 03-31-2011 |
20110090786 | RSVP-TE GRACEFUL RESTART UNDER FAST RE-ROUTE CONDITIONS - According to one embodiment, in response to at least one of a link failure and node failure of a protected label switched path (LSP), network traffic is switched onto a protection path according to a fast re-reroute (FRR) scheme. A HELLO session is established with the remote node that is not immediately adjacent to the network element, including exchanging one or more HELLO messages with the remote node, each HELLO message having a time-to-live (TTL) value of greater than one if IP forwarding is used. The TTL value of the HELLO message is set to one if the HELLO message is sent via tunnel. In response to a request to restart, a resource reservation protocol (RSVP) traffic engineering (TE) graceful restart (GR) procedure is performed using information obtained from the one or more HELLO messages exchanged with the remote node during the HELLO session. | 04-21-2011 |
20110110223 | SELF ORGANIZING IP MULTIMEDIA SUBSYSTEM - A self-organizing IP multimedia subsystem exhibiting node splitting and node merging functions wherein any node within the self organizing IP multimedia subsystem may assume any role thereby providing node balancing and fault tolerance to an overall network. | 05-12-2011 |
20110110224 | FAST REROUTE PROTECTION OF LOGICAL PATHS IN COMMUNICATION NETWORKS - Technique for fast rerouting (FRR) of traffic in a communication network, from a working path comprising a link with its downstream node, to one or more backup paths concurrently providing link protection and node protection to the link and the downstream node; the method comprises enabling the downstream node to block forwarding of traffic, if received at the downstream node along the backup path(s), towards a more-down-stream node in the working path in case the more-down-stream node participates in providing node protection against a failure of the downstream node, the technique thereby prevents traffic duplication at the more-down-stream node and does not require distinguishing a link failure from a node failure. | 05-12-2011 |
20110122763 | DIAGNOSING NETWORK PROBLEMS IN AN IPV6 DUAL STACK NETWORK - Embodiments of the present invention are directed to diagnosing problems in a dual stack network supporting Internet Protocol Version Six (IPV6). Inventoried information can be retrieved from an inventory system in response to a problem associated the dual stack network. It can be determined whether a mismatch exists between live customer address information associated with a customer edge router and the inventoried information. A notification can be generated in response to determining whether a mismatch exists. The notification includes information representing a cause of the problem and resolution of the problem. | 05-26-2011 |
20110141882 | SYSTEM AND METHOD FOR PROVIDING A COMPUTER STANDBY NODE - An apparatus for providing a computing environment in a computing system includes a first node, a second node, an operations server, and a communication link. The first node is capable of supporting a production computing environment and has a first disk storage. The second node is capable of supporting a second operational computing environment, independent of the production computing environment and has a second disk storage. The operations server manages the first and second node and can switch the production computing environment from the first node to the second node. The communications link allows communication between the first node, the second node, and the operations server. The second node can take over the production computing environment from the first node upon a failure of the first node by providing the second node with access to the first disk storage and rebooting the second node from the first disk storage. A method of switching a production computing environment from a first node, having a first disk storage, to a second node in the event of a failure on the first node includes determining if the first node had a failure and if the first node had a failure: reassigning ownership of the partition definition to the second node; restoring communications configuration on the second node; and booting the second node from the first disk storage. | 06-16-2011 |
20110176412 | DISTRIBUTED VIRTUAL FIBRE CHANNEL OVER ETHERNET FORWARDER - A virtual Fibre Channel over Ethernet (FCoE) forwarder (vFCF) distributed in the core layer of an FCoE environment between two or more FCoE-enabled core switches by using a single virtual domain ID for the FCoE forwarders (FCFs) in a fabric is provided. In this manner, the network problem of having a single point of failure in a fabric is eliminated without needing to double the number of core switches in the FCoE environment for redundancy. Because the login and state information is distributed between the FCoE-enabled core switches of a fabric, the loss or failure of a core switch no longer means that the fabric goes down. Instead, when a core switch fails, the hosts and initiators may stay logged in through the other core switches. | 07-21-2011 |
20110182172 | Auto Mesh Discovery Mechanism - Activating an Access Point (AP) on a Mesh Network. In a wireless Mesh network, only a subset of nodes in the network have wired connections to a controller. An AP is preprogrammed so that when it is placed in operation, it attempts to contact a controller to receive provisioning information for it to provide services as intended. If this attempt to make a wired or pre programmed wireless mesh network connection fails, the AP initiates the procedure to establish a special mesh wireless connectivity. Other active nodes in the network respond to this special mesh wireless procedure and a wireless link is established between the AP and a node forming a Mesh network. Authentication such as verification of certificates may be performed. The AP receives provisioning information for operating on the network either from the Mesh node, or through the Mesh network from the controller. Once the AP has received and verified the information, it places itself in operation as a new node on the Mesh network or be ready for the intended deployment else where as an AP or join the network and begin providing services using new information acquired. | 07-28-2011 |
20110194405 | NETWORKS HAVING MULTIPLE PATHS BETWEEN NODES AND NODES FOR SUCH A NETWORK - A network ( | 08-11-2011 |
20110199894 | MANAGING L2VPN CONNECTIVITY AFTER A FIBER NODE SPLIT - In one example, a routing protocol is used to propagate or flood information over a network of Cable Modem Termination Systems (CMTSs) in response to a fiber node split that changes which of the CMTSs a cable modem is coupled thereto. The network processes the information and dynamically changes a pseudowire placement to maintain the Layer 2 Virtual Private Network (L2VPN) connectivity among cable modems of different CMTSs after the fiber node split. | 08-18-2011 |
20110211445 | System and Method for Computing a Backup Ingress of a Point-to-Multipoint Label Switched Path - Disclosed is an apparatus that includes a path computation element (PCE) configured to communicate with a path computation client (PCC) and compute a backup ingress node for a Point-to-Multipoint (P2MP) Label Switched Path (LSP) in a network associated with the PCC. The backup ingress node is coupled to an ingress node of the P2MP LSP and to a plurality of next-hop nodes of the ingress node of the P2MP LSP via a backup tree. | 09-01-2011 |
20110228670 | N_Port ID Virtualization node redundancy - In one embodiment, a method includes establishing a link between two N_Port Identifier Virtualization (NPIV) switches, the link having a high cost assigned thereto. The NPIV switches are in communication with a plurality of hosts through an N_Port Virtualization (NPV) device. The method further includes receiving at a first of the NPIV switches, an indication of a failure at a second of the NPIV switches, receiving data at the first NPIV switch, the data destined for one of the hosts associated with a domain of the second NPIV switch, and forwarding the data to the NPV device for delivery to the host, wherein a Fibre Channel Identifier (FCID) of the host is the same before and after the failure at the second NPIV switch. An apparatus is also disclosed. | 09-22-2011 |
20110228671 | Method and System for Regulating Reboot Traffic in a Telecommunications Network - A method of regulating traffic in a telecommunications network, including a first step of detecting a fault affecting a node or a link of the network. The second step below is then executed: the nodes located immediately upstream of said node/link that experienced the fault forward to the latter the registration requests sent by users of the network, to the extent that the throughput of said registration requests is below a predetermined clipping threshold associated with the registration requests; if the throughput of registration requests exceeds said clipping threshold, the excess requests are not forwarded to the node/link that experienced the fault, and the network sends to each user that sent a request refused in this way, a response prompting that user to observe a time-out period, said response specifying the recommended duration of said time-out period. Application in particular to IP networks using SIP signaling protocols. | 09-22-2011 |
20110235504 | Wireless communication system and nodes - A wireless communication system includes a first node, multiple second nodes, and multiple third nodes that communicate with the first node through the second nodes. The second and third nodes transmit control information to their neighboring third nodes, which calculate link costs from the reception status of the control information. The control information transmitted by each node includes a path cost indicating the cost of a path between the transmitting node and the first node. From the path costs in received control information, each third node selects a second node through which to communicate with the first node, and selects a parent node as the destination of the first hop on the path through the selected second node to the first node. Routing is thereby accomplished autonomously without having the second nodes flood the system with routing requests. | 09-29-2011 |
20110235505 | Efficient deployment of mobility management entity (MME) with stateful geo-redundancy - This disclosure describes a method to provide stateful geographic redundancy for the LTE MME (Mobility Management Entity) function of the 3GPP E-UTRAN Evolved Packet core (EPC). The method provides MME many-to-one (“n:1”) stateful redundancy by building upon the S1-Flex architecture, which enables a MME Pool Area to be defined as an area within which a UE (User Equipment) may be served without need to change the serving MME. Geographic redundancy is achieved by utilizing a standby MME node deployed to backup a pool of MME nodes, with the standby MME node designed to handle the large volume of journaling or synchronization messages from all the MME nodes in the pool. The standby MME node takes over the personality and responsibility of any MME node in the pool that has failed, with minimal impact to subscribers that were being served by that failed MME node. | 09-29-2011 |
20110242967 | CONTROL OF A MOBILE DEVICE - A method, apparatus, and computer readable storage medium are disclosed to control a mobile device. A disable event module detects a failure to respond to a communication. The communication is sent to a mobile communications device from a supervisory source. A function disable module disables one or more functions of the mobile communications device in response to detecting the failure to respond to the communication. An enable event module detects a second communication between the mobile communications device and the supervisory source. A function enable module enables the one or more functions in response to detecting the second communication. | 10-06-2011 |
20110242968 | Method and Apparatus for Improving Network Communication Using BFD and VRRP Tracking System - An apparatus and method of a network system between a host and a group of routers using virtual router redundancy protocol (“VRRP”) messages and bidirectional forwarding detection (“BFD”) sessions are disclosed. The network system is capable of facilitating a first communication between a host and a master router of multiple VRRP routers and establishing a BFD session between the host and the master router. When the BFD session fails, the priority of the master router is subsequently lowered and a backup router is activated. In one embodiment, the backup router capable of performing functions of the master router becomes a new master until the BFD session resumes. | 10-06-2011 |
20110255399 | Network Nodes - A network node comprising at least one network interface the network node arranged to form network links to other network nodes through the or each network interface, each network link being to a neighbouring one of the other network nodes, the network node arranged to determine whether data transmitted over the links to the relevant neighbouring network nodes is successfully received. Should the network node make a first determination that data sent over a given network link to a neighbouring node has not been successfully received, the network node temporarily disables the entry for that network link in a memory for a period of time, such that the network node does not send data to the neighbouring node over the given network link during the period of time, but then subsequently re-enables the entry after the period of time has elapsed. Should the network node make a subsequent determination that data sent over the given network link to the neighbouring network node has not been successfully received, the network node deletes the entry from the memory. | 10-20-2011 |
20110280120 | SYSTEMS AND METHODS FOR TRANSMISSION OF ALARM INDICATION SUPPRESSION MESSAGES IN CONNECTION WITH FAILURE OF NETWORK ELEMENT EQUIPMENT - According to one embodiment, a method may include detecting an occurrence of a fault for a component of a network element having a maintenance entity provisioned thereon. The method may further include transmitting alarm indication suppression messages to components for which the maintenance entity was configured to transmit alarm indication suppression messages in response to detecting the occurrence of the fault. | 11-17-2011 |
20110280121 | SYSTEM AND METHOD FOR SUMMARIZING ALARM INDICATIONS IN A NETWORK ENVIRONMENT - An example method includes detecting a failure at a first network element, the failure is associated with a link between the first network element and a second network element. The method also includes generating a list of network elements to be notified based on the failure, the second network element is included on the list. The method further includes generating an alarm indication signal (AIS) message, the AIS message identifies a plurality of tunnels affected by the failure. The AIS message is communicated to the second network element. In more detailed embodiments, each link between the first network element and the second network element includes a globally unique link identifier, which includes an associated autonomous system number. The globally unique link identifier can represent a string to be associated with the plurality of tunnels, the globally unique link identifier includes a source address and a destination address. | 11-17-2011 |
20110286325 | HYBRID SATELLITE AND MESH NETWORK SYSTEM FOR AIRCRAFT AND SHIP INTERNET SERVICE - A hybrid satellite-mesh network including a ground segment, a mobile segment and a satellite segment provides high bandwidth communication between mobile platforms and the Internet. The satellite segment is used only when mesh network communication links between mobile segment nodes and ground segment nodes are unavailable. Mobile segment nodes can function in either an access terminal mode or an access point mode to communicate with other mobile segment nodes according to a routing algorithm in a mesh portion of the network. Mobile segment nodes employ adaptive frequency reuse, link level date rate adaptation, link level power control and adaptive beam forming antennas. | 11-24-2011 |
20110299386 | APPARATUS AND METHOD FOR SWITCHING BETWEEN REDUNDANT COMMUNICATION DEVICES - A packet is transmitted from a transmitting device to an active communication device which transmits a reception history identifying the received packets to the transmitting device. The transmitting device transmits an active-mode request message to a standby communication device when having failed to receive the reception history from the active communication device within a predetermined time period. Then, the standby communication device becomes a new active communication device, and the active communication device becomes an old active communication device. The new active communication device transmits to the transmitting device a switching request message for switching a destination of the packet from the old active communication device to the new active communication device. The transmitting device retransmits packets that have been transmitted from the transmitting device to the old active communication device and have failed to be received by the old active communication device, to the new active communication device. | 12-08-2011 |
20110310728 | Recovery of Media Gateway Resources for Terminations - The invention relates to a method for controlling a media gateway by a switching center having a cluster structure with a plurality of blades using a partial wildcarding mechanism by including a blade identifier in the wildcard field. | 12-22-2011 |
20120002537 | BASE STATION FAILOVER USING NEIGHBORING BASE STATIONS AS RELAYS - A method performed by a base station in a network, includes detecting a malfunction associated with a backhaul link to the network; identifying one or more neighboring base stations located within a transmission range of the base station; selecting at least one of the one or more neighboring base stations based on one or more parameters, associated with the one or more neighboring base stations, in response to detecting the malfunction; receiving, by a radio frequency (RF) transceiver associated with the base station, a signal from a user equipment; and transmitting, by an RF transceiver associated with the base station, the signal to the selected at least one of the one or more neighboring base stations. | 01-05-2012 |
20120014246 | METHOD AND SYSTEM FOR SETTING UP PATH THROUGH AUTONOMOUS DISTRIBUTED CONTROL, AND COMMUNICATION DEVICE - A path setup method that makes it possible to avoid a failure in path setup even if a state when setting up a path is that a communication device existing in the path is incapable of communication, as well as a communication device using the method, are provided. According to a method for setting up a path through autonomous distributed control in a network in which a plurality of communication devices (NE | 01-19-2012 |
20120033543 | Method and System for Implementing Network Element-Level Redundancy - According to a further embodiment, a method may include communicatively coupling a first network element to a second network element via a first path of a point-to-point network. The method may also include communicatively coupling the first network element to a third network element via a second path of the point-to-point network. The method may additionally include communicatively coupling the second network element and the third network element to a multipoint-to-multipoint network. The method may further include configuring the first path and the second path as paths of a linear protected switching connection such that traffic associated with a service and communicated between the first network element and the multipoint-to-multipoint network via one of the first path and the second path may be switched over to the other of the first path and the second path in response to an event. | 02-09-2012 |
20120033544 | METHOD AND APPARATUS FOR CORRELATING AND SUPPRESSING PERFORMANCE ALERTS IN INTERNET PROTOCOL NETWORKS - A method and apparatus for correlating and suppressing performance alerts in a packet network are disclosed. In one embodiment, a method for handling alerts in a packet network includes receiving a plurality of alerts relating to one or more faults in the packet network, wherein the plurality of alerts is generated from information contained in a plurality of call detail records, correlating the plurality of alerts into one or more sets of performance alerts, each of the one or more sets of performance alerts being associated with a common one of the one or more faults, and suppressing at least one further alert relating to at least one of the one or more sets. | 02-09-2012 |
20120033545 | Methods and Devices For Providing Robust Nomadic Wireless Mesh Networks Using Directional Antennas - The number of directional antennas and associated radios needed to ensure a nomadic wireless mesh network (NWMN) remains operational in the event of node or link failures, while minimizing delay and other unwanted effects, may be determined using novel methods and devices. Such a determination may reduce the number of antennas and radios a service or network provider normally uses, thus reducing its costs. | 02-09-2012 |
20120039166 | Method and System for Optimizing Network Coverage and Capacity - A method and system for optimizing network coverage and capacity are provided. The method comprises that: judging whether there is a problem of coverage and capacity according to the threshold set in a NodeB for the collected coverage and capacity optimizing data; if yes, the NodeB provides a solution strategy according to the problem of coverage and capacity as well as the coverage and capacity optimizing data causing the problem. The method achieves the automation of network coverage and capacity, saves a great deal of manpower and material resource needed by the traditional optimizing method, and decreases the cost of network operation and maintenance. | 02-16-2012 |
20120044802 | METHOD AND DEVICE FOR REALIZING IP MULTIMEDIA SUBSYSTEM DISASTER TOLERANCE - A method for realizing an Internet protocol (IP) multimedia subsystem (IMS) disaster tolerance includes the steps as follows. An S-CSCF receives a user registration, and backs up necessary data which is required when a user service processing is restored on a storage entity in a network. An I-CSCF of user's home domain receives a service request of the user, and if it is found that the S-CSCF currently providing a service for the user fails, assigns a new S-CSCF to the user, and forwards the service request to the newly assigned S-CSCF. The newly assigned S-CSCF interrogates and acquires subscription data of the user and the necessary data backed up by the original S-CSCF from the storage entity, and then restores the user service processing according to the subscription data and the backup data. A device for realizing an IMS disaster tolerance is also provided. | 02-23-2012 |
20120069731 | MANAGING RACE CONDITIONS BETWEEN CIRCUIT SWITCHED FALLBACK REQUESTS - Circuit switched fallback (CSFB) requests may be managed. A mobile management entity (MME) can detect one or more pending CSFB requests. In response to detecting the pending CSFB request(s), the MME can generate a message that indicates the one or more pending CSFB requests, and can communicate the message to one of a mobile switching center (MSC) and a virtual location register (VLR). | 03-22-2012 |
20120069732 | APPARATUS AND METHOD FOR DETECTIONG CAUSE OF RADIO LINK FAILURE OR HANDOVER FAILURE IN MOBILE COMMUNICATION SYSTEM - A terminal, a Base Station (BS) and a method for detecting a cause of a Radio Link Failure (RLF) or handover failure are provided. The method includes determining whether an RLF or a handover failure occurs, performing a process of a connection re-establishment or connection establishment to enter a connection mode after encountering the RLF or the handover failure, and transmitting an RLF information report to a BS after entering the connection mode. | 03-22-2012 |
20120069733 | Method for processing abnormality between non-adjacent nodes - The present invention provides a method for processing abnormalities between non-adjacent nodes. which is applied to network element nodes supporting a GPRS Tunneling Protocol (GTP). The GTP node sends a network element-level node abnormality message to other adjacent GTP nodes once the abnormality of an adjacent | 03-22-2012 |
20120087234 | METHODS, SYSTEMS AND COMPUTER-READABLE MEDIA FOR CONDUCTING COMMUNICATIONS - The present disclosure relates to methods, systems, and computer-readable media for conducting communications. One method includes determining a context associated with a communication between a first participant and a second participant while the communication is occurring, determining a failure of the communication, and resuming the communication based, at least in part, on the context. | 04-12-2012 |
20120087235 | METHOD AND APPARATUS FOR MONITORING CONNECTIVITY IN A LONG TERM EVOLUTION NETWORK - A method and apparatus for monitoring connectivity in a network at a bearer path layer are disclosed. For example, the method receives a request to monitor a user endpoint, identifies an internet protocol address of the user endpoint, an internet protocol address of each transport network element between the user endpoint and a bearer trace server, a bearer path identification of each bearer used by the user endpoint, a quality of service associated with each bearer used by the user endpoint, and a tunnel identification of each bearer used by the user endpoint; and performs a fault isolation and performance monitoring at a bearer path layer, wherein the fault isolation identifies a particular segment where a fault is detected at the bearer path layer. | 04-12-2012 |
20120092984 | HIERARCHICAL MESH NETWORK FOR WIRELESS ACCESS - In one embodiment, a wireless mesh network is configured as a multiple-level hierarchical network, with each level of the hierarchy having a plurality of nodes. Several clusters of nodes each acting as access points may be organized in numerous first-level meshes, with each of the first-level meshes being coupled to a second-level mesh having nodes that act as gateways to the first-level meshes. | 04-19-2012 |
20120099421 | COMMUNICATION SYSTEM, NODE DEVICE, COMMUNICATION METHOD IN THE COMMUNICATION SYSTEM, AND PROGRAM - A communication system comprises: failure detection means that detects a failure on a first transmission path over which data transmission is being performed; transmission path setting means that, when the failure exists in a link or a node that is located immediately before its own node, sets a second transmission path as far as a transmission terminal node, the second transmission path that excludes a path from the transmission terminal node to a node that has detected the failure within the first transmission path; first failure notification means that transmits a failure notification signal as far as the transmission terminal node over the second transmission path; new path switching means that, upon receipt of the failure notification signal, switches a switch for data transmission so that a path for new data transmission is the same path as a transmission path for the failure notification signal; and data transmission means that, upon the transmission terminal node receiving the failure notification signal, switches the switch to the second transmission path and performs a new data transmission over the second transmission path. | 04-26-2012 |
20120099422 | FAST CONVERGENCE METHOD, ROUTER, AND COMMUNICATION SYSTEM FOR MULTICAST - A fast convergence method, router, and communication system for multicast are disclosed. In the fast convergence method, router, and communication system for multicast, active and standby outgoing interfaces and active and standby next hops for each unicast route reaching a multicast source are calculated, and then active and standby paths are constructed according to the calculated active and standby outgoing interfaces and next hops; when the active path fails, a multicast stream sent by the multicast source is received through the standby path and forwarded; active and standby incoming interfaces and next hops of multicast do not need to be configured on the device statically, which may adapt to dynamic topology changes of the network and greatly expand the multicast stream protection scenarios. | 04-26-2012 |
20120106321 | METHOD AND DEVICE FOR CONVEYING TRAFFIC IN A NETWORK - A method and a device convey traffic in a network. The network contains at least one intermediate network element. A master node is connected via the at least one intermediate network element to a first slave node. A deputy node is connected via the at least one intermediate network element to the first slave node. Traffic is conveyed between the master node and the first slave node. In the case of a fault condition the traffic is conveyed between the deputy node and the first slave node. Furthermore, a communication system ideally contains such a device. | 05-03-2012 |
20120113801 | SCALABLE RELIABLE FAILOVER IN A NETWORK - A method is provided for establishing a reliable communication channel between an encapsulation node and a cluster of decapsulation nodes across a communication network. The method is implemented at the encapsulation node and comprises the following steps. A primary session is initialized with a primary decapsulation node in the cluster of decapsulation nodes during which an assigned address is received. A redundant session is initialized with a redundant decapsulation node in the cluster of decapsulation nodes. Data is transmitted to and received from the decapsulation node until a failure is detected. Once the failure is detected, data is transmitted to and received from the redundant decapsulation node instead of the primary decapsulation node. | 05-10-2012 |
20120113802 | Method, Apparatus, and System for Disaster Recovery of IMS - A method, apparatus, and system for disaster recovery of an IP Multimedia Subsystem (IMS) are provided. The method includes: triggering a redundant Call Session Control Function (CSCF); obtaining, by the redundant CSCF, user backup data of registered IMS Private User Identities (IMPIs) that are associated with IMPUs and user service configuration data of IMS Public User Identities (IMPUs) in an IMS subscription from a network storage entity of a user; and recovering, by the redundant CSCF, a corresponding service according to the obtained user backup data of the registered IMPIs and user service configuration data of the IMPUs in the IMS subscription. With the present invention, the one-IMPU multi-IMPI, one-IMPI multi-IMPU, or multi-IMPI multi-IMPU service can be recovered, and this enables the user to have better service continuity experiences. | 05-10-2012 |
20120134259 | MOBILE GATEWAYS IN POOL FOR SESSION RESILIENCE - Embodiments of the invention include a method for providing UE session resilience performed in a first PDN-GW that is coupled to a second PDN-GW, which are both in a PDN-GW pool. The method provides UE session resilience by allowing the first PDN-GW to provide connectivity for UE sessions previously serviced by the second PDN-GW after the second PDN-GW becomes non-operational. The first PDN-GW recognizes that the second PDN-GW failed and then activates a plurality of standby UE sessions. Each standby UE session is a backup UE session corresponding to a previously active UE session serviced on the second PDN-GW. Each standby UE session is associated with a UE device and a network resource identifier of an APN slice. The first PDN-GW transmits a message to a SGW that is servicing the UE sessions that indicates that the SGW should direct traffic previously bound for the second PDN-GW to the first PDN-GW. | 05-31-2012 |
20120147738 | COMMUNICATING INFORMATION IN AN INFORMATION HANDLING SYSTEM - A node communicates with a first network through a link aggregation of at least one primary port and at least one backup port. The link aggregation is for rerouting a communication with the first network to occur through the backup port in response to a malfunction in the communication through the primary port. In response to a malfunction in the communication through the backup port, the node communicates with a second network. | 06-14-2012 |
20120147739 | System and method for assisting user in troubleshouting network connection problems - The present invention is to provide a system for assisting a user in troubleshooting network connection problems, which includes a main terminal device (e.g., a computer) and a mediation device (e.g., a router) connected to the main terminal device and storing an assisting web page. Upon receiving a web page request instruction from the main terminal device, the mediation device redirects the web page request instruction to a website address. When the mediation device determines that itself is not connected to the Internet (i.e., a network connection problem occurs), the mediation device will send the assisting web page to the main terminal device. The assisting web page is displayed by the main terminal device through a browser thereof, so as for the user to troubleshoot the network connection problem according to the steps specified in the assisting web page (e.g., to perform a line inspection, a light signal check, etc.). | 06-14-2012 |
20120147740 | TECHNIQUE FOR DUAL HOMING INTERCONNECTION BETWEEN COMMUNICATION NETWORKS - A dynamically self-configuring and re-configuring dual homing connection (DH) for loop-free data communication between a first communication network and a second communication network, the DH acquiring either a Symmetrical configuration or an Asymmetrical configuration. | 06-14-2012 |
20120155248 | METHOD AND APPARATUS FOR TRASMITTING GROUP MESSAGE IN UNICAST NETWORK - A method and an apparatus for transmitting a group message in a unicast-based network are provided. A method of a terminal for transmitting a group message in a unicast-based network includes when receiving a session connection request message, transmitting a first group notification message for forming a relay group, to other terminals, receiving a second group notification message from at least one other terminal, forming a relay group with the terminal and at least one other terminal corresponding to the second received group notification message, and determining one of the terminals of the relay group as a relay terminal which relays the group message to other terminals in the relay group. | 06-21-2012 |
20120155249 | TECHNIQUE FOR IDENTIFYING A FAILED NETWORK INTERFACE CARD WITHIN A TEAM OF NETWORK INTERFACE CARDS - A method for identifying a failed network interface card in a system having two NICs configured as a team includes the steps of transmitting a first data packet from the first NIC to a third NIC, wherein the third NIC is not a member of the team, and transmitting a second data packet from the first NIC to the second NIC or from the second NIC to the third NIC, depending on whether the third NIC responds to the transmission of the first data packet. One advantage of the disclosed method is that it specifically identifies which NIC within the team has failed, which is something that cannot be determined by simply exchanging packets between the two NICs. | 06-21-2012 |
20120163164 | METHOD AND SYSTEM FOR REMOTE LOAD BALANCING IN HIGH-AVAILABILITY NETWORKS - A system is provided for facilitating remote load balancing in a high-availability network. During operation, the system receives a plurality of data frames destined for a destination device, wherein the destination device is coupled to a network via a trunk link, the trunk link coupling the destination device to at least two separate egress switching devices. The system then forwards the data frames via at least two data paths, each of which leads to a respective egress switching device. | 06-28-2012 |
20120176891 | Method and Apparatus for Recovery of Link Failure During Handover in TD-SCDMA Systems - A method and an apparatus for wireless communications comprising determining that a first handover from a source cell to a target cell has failed; and performing a second handover from the source cell to a first neighbor cell different from the source cell and from the target cell. In on aspect, the method and apparatus further comprising performing the second handover by sending a signal to the first neighbor cell and receiving a return signal from the first neighbor cell; and further comprising sending a message to initiate radio resource setup between the first neighbor cell and a radio network controller (RNC); and receiving a connection resetup and a Physical Channel Reconfiguration message from the radio network controller (RNC). | 07-12-2012 |
20120176892 | Handover Parameter Control Apparatus and Method, and Computer Program - A handover parameter control apparatus in each cell of a cellular system having a condition in which if power received by a mobile terminal from a neighbor base station and power received from an access base station, to which the mobile terminal is connected, have power difference greater than or equal to a threshold, the mobile terminal executes handover from an access cell belonging to the access base station to a neighbor cell belonging to the neighbor base station. The apparatus includes a threshold control weight computation unit that computes a threshold control weight which indicates a threshold control direction so as to reduce handover failures, by using a frequency of first-type handover failure events which reduces by increasing the threshold; and a frequency of second-type handover failure events which reduces by decreasing the threshold; and a threshold determination unit that determines the threshold based on the threshold control weight. | 07-12-2012 |
20120182863 | PROTOCOL FOR CLOCK DISTRIBUTION AND LOOP RESOLUTION - In response to a network topology change, a clock root node calculates a new clock path for each affected node by building a clock source topology tree, and identifying from that tree a path to the network node from a clock source of higher or equal stratum relative to that network node. The root node then sends a network message to each node indicating the new path that the node should use. Each node receives the message and compares the new path with the existing path. If the paths are different then the node acquires the new path just received in the message. If the paths are the same then the node does nothing and discards the message. | 07-19-2012 |
20120182864 | SYSTEM AND METHOD FOR LOAD BALANCING NETWORK RESOURCES USING A CONNECTION ADMISSION CONTROL ENGINE - A system and method for load balancing network resources. Network performance information regarding data flow through a network is gathered using performance information packet data packets. The data flow is distributed through access points of the network using connection control admission control engines. The distributing includes routing the data flow to more efficiently use the network resources based on the PIP data packets. | 07-19-2012 |
20120188868 | SYSTEM, METHOD, COMPUTER PROGRAM FOR MULTIDIRECTINAL PATHWAY SELECTION - The present invention is a system, method and computer program product operable to select a pathway for a communication signal within a network between two end points. The pathway may be selected based on one or more parameters that may be monitored or measured at either, or both, of the two end points. Should one or more of the parameters indicate an imminent network connection failure, the communication signal may be transferred from a primary communication connection to a second communication connection. The present invention may distinguish false from true positive detections and may undertake a transfer of a communication signal within a short response time, so as to support real-time applications. The present invention may manage the pathway to support communication between the two end points at any given time. Such communications may occur in two directions, therefore the management of the pathway can happen in two directions. | 07-26-2012 |
20120195188 | CONTROL METHOD OF VIRTUAL LINK DISCOVERY AND SYSTEM FOR FIBRE CHANNEL OVER ETHERNET PROTOCOL - A control method of virtual link discovery and a system for Fibre Channel over Ethernet (FCoE) protocol allocates some Ethernet Nodes (ENodes) and FCoE Forwarders (FCFs) to different virtual networks during networking, and provides a Virtual Node (VN) port of each ENode and a Virtual Fibre Channel (VFC) port of each FCF with a Virtual Network Identification (VN ID) of a virtual network to which they belong. In this way, a VN port of an ENode may establish a virtual link with a VFC port that belongs to the same virtual network in preference, so that some ENodes are made to access FCFs that belong to the to same virtual networks as the ENodes. | 08-02-2012 |
20120201124 | DESIGNATED FORWARDER ELECTION FOR VPLS WITH BGP-BASED MAC LEARNING - In one embodiment, a network device may participate in an election process to elect one of two or more Provider Edge devices of a Redundancy Group to be a Designated Forwarder for the Redundancy Group, where the Redundancy Group is in a Service Provider network, and where the Redundancy Group serves a Customer Edge device of a customer network. The network device may forward multi-destination traffic to the Customer Edge device according to whether the network device is elected to be the Designated Forwarder for the Redundancy Group. Multi-destination traffic may include multicast traffic, broadcast traffic, or destination unknown unicast traffic. | 08-09-2012 |
20120201125 | WIRELESS ROUTER SYSTEM AND METHOD - A wireless router employing a technique to couple a plurality of host services or host systems and a plurality of wireless networks. A method to route data items between a plurality of mobile devices and a plurality of host systems through a common wireless router. A point-to-point communication connection is preferably established between a first host system and a common wireless router, a mobile network message at a mobile device is generated, the mobile network is transmitted via a wireless network to the common wireless router which in turn routes a data item component of the mobile network message to the appropriate host service. | 08-09-2012 |
20120207015 | METHODS, SYSTEMS, AND COMPUTER READABLE MEDIA FOR PROVIDING ENHANCED MOBILE SUBSCRIBER LOCATION REGISTER FAULT RECOVERY - Methods, systems, and computer readable media for providing enhanced mobile subscriber location register fault recovery are disclosed. According to one method, the method occurs at a signaling message routing node. The method includes storing, in a memory, mobile subscriber location information. The method also includes receiving a reset related message associated with a mobile subscriber from a recovering mobile subscriber location register. The method further includes extracting, from the memory, mobile subscriber location information and responding to the recovering mobile subscriber location register with the mobile subscriber location information. | 08-16-2012 |
20120213058 | APPARATUS AND METHOD FOR FACILITATING FALLBACK ACCESS SCHEMES - Systems and methodologies are described that facilitate random access procedures using one or more fallback access schemes after initial access attempts have failed. UE equipped to determine failure of a first access request to a first base station due to interference from a second base station. Further, a UE equipped to determine the failure can do so and implement one or more fallback access schemes in response to the determination. In one example, a fallback access scheme allows the UE to select a secondary carrier frequency for communications with the first base station. In another example, a fallback access scheme allows the UE to designate the first base station as inaccessible and communicate with other base stations. | 08-23-2012 |
20120213059 | RELIABLE AND RESILIENT END-TO-END CONNECTIVITY FOR HETEROGENEOUS NETWORKS - Embodiments of the present invention address deficiencies of the art in respect to connectivity management in a heterogeneous network and provide a method, system and computer program product for resilient and reliable end-to-end connectivity in a heterogeneous network. In one embodiment of the invention, a method for resilient and reliable end-to-end connectivity in a heterogeneous network environment can be provided. The method can include creating an instance of an abstracted network resource model (NRM) for a heterogeneous network environment of different network resource nodes. The method further can include binding an application endpoint in the instance of the abstracted NRM with a connectivity endpoint for a first of the different network resource nodes. Finally, the method can include re-binding the application endpoint to a second of the different network resource nodes in response to detecting the outage. | 08-23-2012 |
20120224469 | NETWORK FAULT DETECTION METHOD AND APPARATUS - A method of detecting media plane faults within a communications network. The method comprises, following the establishment of a media plane connection between first and second end point nodes within the network, where the connection transits one or more intermediate nodes within the media plane, sending session test requests from the first end point towards the second end point across a supervision session established over the media plane, and sending session test acknowledgements from the second end point to the first end point, the session test acknowledgements identifying a first border of the supervision session. The method further comprises, in the event of a media plane fault, responding to the sending of a further session test request by returning a further session test acknowledgement identifying a second border of the supervision session. The media plane fault can be detected by comparing the first and second supervision session borders contained in session test acknowledgements. | 09-06-2012 |
20120224470 | METHOD AND APPARATUS FOR SETTING RADIO LINK OF TERMINAL IN WHICH MULTIPLE CARRIERS ARE INTEGRATED IN MOBILE COMMUNICATION SYSTEM - The present invention relates to an apparatus and a method, wherein a terminal in which multiple carriers are integrated and sets a radio link by detecting and recovering radio link failure in a mobile communication system. The method comprises the steps of: setting a radio link in one serving cell in multiple carriers; checking a radio state of a primary carrier if failure of the radio link is detected; searching other cells adjacent to the serving cell by driving a timer, if the radio state is not matched with a preset radio condition; stopping the driving of the timer if the radio state is recovered while the timer is driven; and inactivating one of the multiple carriers. | 09-06-2012 |
20120236709 | SYSTEM AND METHOD FOR PRESERVING SESSION CONTEXT DURING INTER-RADIO ACCESS TECHNOLOGY SERVICE RETRY - A method is provided for facilitating preservation of session context information during an inter-radio access technology service retry. A user equipment (UE) may initiate a data transmission for a first service over a wireless communication session with a first network. Upon ascertaining that the first service has failed over the first network, a failover procedure is initiated by sending a service request for a second service to the first network. The second service may be distinct from the first service and has the effect of suspending the wireless communication session with the first network. The UE then resends the data transmission for the first service over a second network. The UE then resumes use of the wireless communication session over the first network after resending the data transmission over the second network. This resumption is done by using context information for the wireless communication session preserved prior to the suspension. | 09-20-2012 |
20120250498 | Failure Event Report Correlation for Distributed RAN Self-Organization - A method of failure event report correlation is proposed. A UE detects a failure event in a first cell served by a first base station, and the UE is assigned with a previous C-RNTI. The failure event may include a radio link failure, a handover failure, or a RACH failure. The UE then performs an RRC establishment procedure with a second base, and the UE is assigned with a new C-RNTI. After the RRC establishment, the UE transmits a failure event report along with the correlation information to the second base station. The second base station then forwards the failure event report and the previous C-RNTI to the first base station. The first base station can correlate the failure event report with the previous failure event based on the previous C-RNTI to avoid double bookkeeping and improve MRO decision for SON. | 10-04-2012 |
20120250499 | COMMUNICATING DATA UNITS IN A COMMUNICATIONS NETWORK THAT PROVIDES FAILURE PROTECTION - A node comprises a first communications interface to a customer network element, where the first communications interface is part of a group of communications interfaces to the customer network element to provide failover support. The node further includes a network interface to communicate over a trunk group to other nodes, where the trunk group includes a primary trunk and a secondary trunk. Just one of the primary and secondary trunks is active for communicating data units. | 10-04-2012 |
20120257494 | SIMULTANEOUS ACQUISITION OF A TD-SCDMA NETWORK IN CIRCUIT-SWITCHED FALLBACK FROM TDD-LTE SYSTEMS - In mobile user equipment (UE) configured to allow for operation on multiple wireless communication networks, such as on a TD-SCDMA network or on a TDD-LTE network, an improved method for handing over a circuit-switched call is offered. The proposed circuit-switched fallback procedure, employing an improved UE hardware architecture, allows for certain connection setup procedures to occur in parallel, such as the UE pre-acquiring the TD-SCDMA cell. The parallel operations thus speed up the circuit-switched fallback procedure and reduce existing delays in executing circuit-switched fallback from TDD-LTE to TD-SCDMA networks. | 10-11-2012 |
20120263033 | AGGREGATING MULTIPLE RADIO LINKS FROM MULTIPLE MODEMS IN A COMMUNICATION DEVICE - Aggregating multiple modems in a communication device into a radio-frequency-link aggregation group increases the limited data bandwidth of RF data transmission between a communication device and its operator network. An aggregation controller in the communication device monitors the availability of its modems and selects modems to be used in a radio-frequency-link aggregation group. The aggregation controller also selects an aggregation algorithm. A radio-frequency-link aggregation module in the communication device distributes data to modems in the radio-frequency-link aggregation group in accordance with the aggregation algorithm. A connectivity service in the communication device notifies the operator network of the modems in the radio-frequency-link aggregation group and acknowledges that the operator network agrees to handle transmission from the radio-frequency-link aggregation group. | 10-18-2012 |
20120263034 | METHOD, APPARATUS, AND SYSTEM FOR CONNECTING TO CALLED TERMINAL - A method for connecting to a called terminal includes: acquiring mobile station international integrated service digital network number (MSISDN) information corresponding to a called terminal which is located at an IP multimedia subsystem (IMS) domain, together with international mobile subscriber identity (IMSI) information and location area identity (LAI) information that correspond to the MSISDN information when a primary mobile access gateway control function entity mAGCF has a failure; and performing a connecting to the called terminal through a selected mAGCF according to the MSISDN information, the IMSI information and the LAI information. | 10-18-2012 |
20120281524 | Technique for Controlling Data Forwarding in Computer Networks - Technique for controlling data forwarding in a computer network are provided. The network comprises a set of nodes for forwarding data, wherein a first node is associated with a primary tree and a backup tree, wherein the primary tree defines a default path for the first node to forward data to a second node and the backup tree defines another path for the data forwarding in case of a failure of the primary tree. The basic principle of the techniques is to notify the first node of a failure of the primary tree wherein the notification is provided by the second node. The techniques are particularly beneficial for computer networks offering multipoint services, such as SPB-controlled networks, because the techniques ensure the congruency of the forward and reverse paths even when the data forwarding has been switched from the primary tree to the backup tree. | 11-08-2012 |
20120307624 | MANAGEMENT OF MISBEHAVING NODES IN A COMPUTER NETWORK - In one embodiment, a node in a computer network detects a misbehaving node in the computer network based on the misbehaving node acting in violation of one or more rules. As such, the node communicates information regarding the misbehaving node to a network management system (NMS), and then may receive isolation instructions from the NMS regarding how to isolate the misbehaving node from the computer network. Accordingly, the node may perform the isolation instructions. In another embodiment, the NMS receives the communicated information regarding the misbehaving node, and determines whether the misbehaving node should be isolated based on the communicated information. If so, then the NMS determines isolation instructions regarding how to isolate the misbehaving node from the computer network, and transmits them to one or more nodes in the computer network, accordingly. | 12-06-2012 |
20120320738 | Port Number Reservation Agent - In a communication device having a modem subsystem and an Application Processing Engine (APE) that share an IP address, port number conflicts are avoided by a Port Reservation Agent (PRA) running on the APE. Apps executing on the modem subsystem must request to register a port number with the PRA prior to using it. If the address is available, the PRA creates a port reservation socket and associates the port number with the requesting app. If the requested port number is not available, the PRA returns an error and the app must request a different address. To apps executing on the APE, the port reservation sockets appear as port numbers associated with other apps executing on the APE. In this manner, port number conflicts between the modem subsystem and the APE are avoided. | 12-20-2012 |
20130003529 | HIGH-AVAILABLE POLICY AND CHARGING-CONTROL IN GEOGRAPHICAL REDUNDANCY PCRF CONFIGURATIONS - The present invention is related to handling redundancy of a Policy and Charging Rules Function (PCRF) in a wireless communication network having an active PCRF, a standby PCRF and a Policy and Charging Enforcement Function (PCEF) by replicating accumulative quota usage of the active PCRF in a memory of the standby PCRF every time an update request is received at the active PCRF. The present invention is directed to a Policy and Charging Rules Function (PCRF) active in a wireless communication network having a standby PCRF and a Policy and Charging Enforcement Function (PCEF), wherein the PCRF includes a memory in which accumulative quota usage is stored. The PCRF includes a network interface unit which receives update requests. The PCRF includes a processing unit which produces a message having the accumulative quota usage from the memory and that is sent to the standby PCRF from the network interface unit every time an update request is received by the network interface unit so the standby PCRF can become an active PCRF when a switchover is required. The present invention is also directed to a method for handling redundancy of a Policy and Charging Rules Function (PCRF) in a wireless communication network having an active PCRF, a standby PCRF and a Policy and Charging Enforcement Function (PCEF). | 01-03-2013 |
20130010590 | DYNAMIC ENABLING OF ROUTING DEVICES IN SHARED-MEDIA COMMUNICATION NETWORKS - In one embodiment, a non-repeated reachability probe is transmitted from a particular node into a shared-media network, where nodes that receive the probe are configured to reply to the particular node. Based on determining a set of one or more nodes in the shared-media network that received the probe, one or more routing nodes of the set may be selected to act as routers in the shared-media network, and notified of their selection. | 01-10-2013 |
20130010591 | TRANSMISSION APPARATUS, FAILURE RECOVERY METHOD, AND NETWORK SYSTEM - An object is to simplify a process performed due to a failure recovery. To realize this object, the transmission apparatus includes a determining unit that determines, when a transmission apparatus receives a frame from each ring in a network including multiple rings in which a part of each ring is shared, whether failure information indicating that a failure has occurred in one of the rings is contained in one of the received frames. The transmission apparatus also includes a mapping unit that maps a frame that is determined by the determining unit to contain the failure information, onto a shared frame that is a frame used in a shared portion in the multiple rings. Accordingly, the process performed due to a failure recovery can be simplified. | 01-10-2013 |
20130016605 | Procedures for Finding a Backup Ingress of a Point-to-Multipoint Label Switched Path - A method comprising receiving a request from a network component to find a backup ingress node for an ingress node of a point-to-multipoint (P2MP) label switched path (LSP), determining a plurality of candidate backup ingress nodes that satisfy a plurality of constraints, including being an edge node in the ingress node's domain and having a direct link to the ingress node, a path to each next hop node of the ingress node of the P2MP LSP, and a path from a source node that communicates with the ingress node, wherein the determination is in response to receiving the request, selecting the backup ingress node from the candidate backup ingress nodes that has a minimum cost of paths from the source node to the next hop nodes via the backup ingress node; and sending a reply to the network component that indicates the selected backup ingress node. | 01-17-2013 |
20130028075 | DETECTING ABNORMAL BEARER TERMINATION AND DYNAMICALLY RESTORING FLOWS UTILIZING AN ALTERNATIVE BEARER - An abnormal termination of a dedicated bearer (e.g., a lost bearer) ( | 01-31-2013 |
20130039168 | SYSTEMS AND METHODS FOR WIRELESS BACKHAUL IN DISTRIBUTED-INPUT DISTRIBUTED-OUTPUT WIRELESS SYSTEMS - Systems and methods are described for wireless backhaul in a multiple antenna system (MAS) with multi-user (MU) transmissions (“MU-MAS”). For example, a multiuser (MU) multiple antenna system (MAS) of one embodiment comprises: one or more centralized units communicatively coupled to multiple distributed transceiver stations via a network; the network consisting of wireline or wireless links or a combination of both, employed as a backhaul communication channel; the centralized unit transforming the N streams of information into M streams of bits, each stream of bits being a combination of some or all N streams of information; the M streams of bits being sent over the network to the distributed transceiver stations; the distributed transceiver stations simultaneously sending the streams of bits over wireless links to at least one client device such that at least one client device receives at least one of the original N streams of information. | 02-14-2013 |
20130051221 | Methods, Systems, and Computer Program Products for Enabling an Operative Coupling to a Network - Methods and systems are described for enabling an operative coupling to a network. In an aspect, first data is detected for forwarding between a first node in a first network and another node by a network relay including a first network interface hardware component operatively coupled to a first network. A determination is made that a second operative coupling to a second network of a second network interface hardware component in the network relay is disabled. The second network interface hardware component is configured to enabled the second operative coupling, in response to the determination. Data received for forwarding between the first network and the second network is forwarded via the enabled second operative coupling. | 02-28-2013 |
20130058209 | SYSTEM AND METHOD FOR HIGH AVAILABILITY MACHINE-TO-MACHINE MANAGEMENT - A high availability management system for machine-to-machine (M2M) gateways is provided. A cluster of mobile stations, which act as M2M gateways for a number of M2M devices, form a virtual high availability management pool which provides access to a telecommunications network. A network messaging center detects the failure or unavailability of an M2M gateway and initiates a failover procedure to transfer the gateway responsibility for the devices connected to the unavailable gateway. An M2M management server identifies a failover mobile station associated with the unavailable mobile station and initiates the transfer of the gateway responsibilities from the unavailable mobile station to the identified failover mobile station. | 03-07-2013 |
20130077472 | REDUNDANCY IN POINT-TO-MULTIPOINT (PMP) BACKHAUL NETWORKS - A device establishes a failover virtual local area network (VLAN) with a first concentration node, a first Ethernet backhaul router, and an access node of a first Ethernet backhaul coverage area. The device also receives, via the first Ethernet backhaul router, an indication of a failure of a second concentration node of a second Ethernet backhaul coverage area intersecting with the first Ethernet backhaul coverage area. The device further enables, based on the failure indication, a switchover of traffic, associated with the second concentration node, to the device and via the failover VLAN. | 03-28-2013 |
20130077473 | PROTECTION SWITCHING METHOD AND SYSTEM FOR A MULTI-ROOTED POINT-TO- MULTI-POINT SERVICE IN A PROVIDER BACKBONE BRIDGE (PBB) NETWORK - The present invention relates to a protection switching method and system for a Multi-Rooted Point-to-Multi-point Service in a Provider Backbone Bridge (PBB) network. In one embodiment, this is accomplished by assigning at least one communication device as Root node, a plurality of intermediate nodes and Leaf nodes, receiving, on at least one of the edge nodes (i.e. Root or leaf), the data packets from a client network interfacing with the PBB network, configuring all the communication edge devices to create a MAC-in-MAC data packet from the received data packet, configuring the Root node to add ISID R and leaf nodes to add ISID L in the I-tag of MAC-in-MAC data packets, determining a fault, if integrity check messages are not received in a predetermined time period between the Root node and the Leaf Nodes and switching the traffic by changing the designated backbone destination MAC address of the MAC-in-MAC data packets from the present root node MAC address to other available superior root node MAC address; wherein switching is performed when integrity failure is detected, or upon network operator request. | 03-28-2013 |
20130114398 | Method of Reference Cell Maintenance - A method of reference cell maintenance for a mobile device in a wireless communication system is disclosed. the method comprises being configured a plurality of secondary cells, where one of the plurality of secondary cells is a reference cell for information reference for another secondary cell, and keeping the reference cell in activated when the reference cell is used by another secondary cell for information reference. | 05-09-2013 |
20130114399 | METHOD FOR SELECTING TEMPORARY CORE NETWORK BASE STATION AND TRUNKING COMMUNICATION SYSTEM - The disclosure discloses a method for selecting a temporary core network, a base station and a trunking communication system, which solve the technical problem of selecting a temporary core network when a core network fails. In the disclosure, judgment information is transmitted between base stations in real time, and when a core network fails, according to the judgment information and a predetermined judgement rule, a base station is judged as a temporary core network which substitutes for functions of a core network to serve users of each base station, so that the problem of selecting a temporary core network when a core network fails is solved. | 05-09-2013 |
20130121137 | METHOD AND APPARATUS FOR SVE REDUNDANCY - Systems and methods for providing service virtualization endpoint (SVE) redundancy in a two-node, active-standby form. An active-standby pair of SVEs register with a cloud-centric-network control point (CCN-CP) as a single service node (SN) using a virtual IP address for both a control-plane and a data-plane. At any given time, only the active SVE is a host for the control-plane and the data-plane. When a failover happens, the hosting operation is taken over by the standby SVE, therefore the failover will be transparent to CCN-CP and the SN. | 05-16-2013 |
20130128722 | STREAMING SERVICE LOAD SHARING METHOD, STREAMING SERVICE PROCESSING METHOD, AND CORRESPONDING DEVICE AND SYSTEM - Embodiments of the present invention disclose a streaming service load sharing method, a streaming service processing method, and a corresponding device and system. According to the embodiments of the present invention, a fixed allocation range is determined for each service node, so that when a service node fails and needs to perform smoothing of stream table items, only a fixed allocation range of the failed service node needs to be shared by other service nodes, thereby better ensuring stability of a processing range of the service node, and reducing the number of the stream table items to be smoothed. | 05-23-2013 |
20130135990 | OPTIMIZING USE OF MOBILE GATEWAYS - A device receives first information from a first service gateway (SGW) and second information from a second SGW. The device further generates a rank of the first SGW and the second SGW based on the first information and the second information. The device also receives a request for a session from a user device, selects the first SGW or the second SGW based on the rank, and uses the selected SGW for the session. | 05-30-2013 |
20130155842 | METHOD AND SYSTEM FOR PROVIDING MOBILE WIRELESS CALL FAILOVER - An approach for call failover to a packetized voice session is described. Impending signal failure is detected on a cellular link supporting a cellular call with a user device. A failover procedure is initiated in response to the detection, wherein the failover procedure includes detecting presence of a wireless data connection, and terminating the cellular call and concurrently activating a voice call application to establish a packetized voice session over the wireless data connection with the user device. | 06-20-2013 |
20130155843 | AUTONOMIC ERROR RECOVERY FOR A DATA BREAKOUT APPLIANCE AT THE EDGE OF A MOBILE DATA NETWORK - A mechanism provides autonomic recovery for a breakout appliance at the edge of a mobile data network from a variety of errors using a combination of hardware, software and network recovery actions. The recovery actions proceed upon a sliding scale depending on the severity of the problem to achieve the goals of minimizing disruption to traffic flowing through the NodeB while also maintaining an acceptable cost of ownership/maintenance of the system by automatically recovering from as many problems as possible. The error recovery functions within the breakout system hide the error recovery complexities from the management system upstream in the mobile data network. For critical, non-recoverable errors, the autonomic recovery mechanism works in conjunction with a fail-to-wire module to remove the breakout system in the event of a failure in such a way that the mobile data network functions as if the breakout system is no longer present. | 06-20-2013 |
20130155844 | PROTECTION SWITCHING METHOD, SYSTEM AND A NODE IN AN LTE NETWORK - The present invention relates to a protection switching method, system and a node in an LTE network. In one embodiment this is accomplished by a plurality of base transceiver station (BTS) linked by the network over which the base transceiver stations communicate, wherein the network includes at least one primary BTS and at least two secondary BTS, and wherein each BTS includes at least two bidirectional antennas, provisioning traffic to at least one secondary BTS as work BTS for backhauling the traffic, wherein the traffic includes user data traffic, control and signaling data traffic from the primary BTS, checking periodically for control signal by all the BTS, wherein the control signals are periodically transmitted and received by all the BTS directly or indirectly via another secondary BTS to check the status of wireless link, transparently and steering, upon failure of the work wireless X2 link between the primary BTS and the secondary BTS, the beam of the primary BTS appropriately to the next available BTS as protect BTS, wherein the steering is based on the computed pre-coder vector value at the primary BTS. | 06-20-2013 |
20130163408 | REALLOCATING SECONDARY DESTINATIONS ON A NETWORK SWITCH - A method, system and program product that in response to a segmented server going offline reallocates only those primary and secondary destinations that need to be reallocated on an evenhanded basis, so there is at most a difference of one in the number of buckets allocated to each segmented server before and after re-allocation. | 06-27-2013 |
20130163409 | DISASTER RECOVERY WITH A CENTRAL CONFERENCING ROUTING SERVER - Aspects of the present disclosure involve systems, methods, computer program products, and the like, for collaboration conferencing with multiple participants over a communications network, and more specifically for a conferencing routing service for managing and routing collaboration participants. In one embodiment, the conferencing routing server is configured to respond to a failure in a conference bridge to allow for repair to the network and/or account for split conferences that may occur due to the bridge failure. In one embodiment, the CCRS may account for moving a conference bridge into an offline state by removing the conference bridge from consideration for hosting a collaboration conference. | 06-27-2013 |
20130163410 | METHOD AND SYSTEM TO DYNAMICALLY DETECT AND FORM A MASTER SLAVE NETWORK - This invention describes a system and method for dynamically establish and maintain a MASTER SLAVE Network among the devices with wireless and wired connectivity. It also provides system and method for maintaining a MASTER SLAVE network in the event where the SLAVE or the MASTER or the server is dead. More importantly, it supports automatic network discovery, establishment and maintenance to provide end to end connectivity by using minimum resources of an enterprise network. | 06-27-2013 |
20130163411 | DEVICE FOR USE IN A DIGITAL CONFERENCE SYSTEM - A device for use in a digital conference system has a first and a second port in connection with each other and has a configuration device for configuring, on receipt of a trigger signal, either the first or the second port as input port of the device and the other port as output port. The trigger signal is a synchronisation signal. The device is preferably a delegate unit or an extension unit. | 06-27-2013 |
20130170336 | MASTER DEVICE, SLAVE DEVICE, AND METHODS THEREOF - A master device, a slave device, and methods are disclosed. The method is performed by a first slave device connected to a master-slave tree network, comprising: determining whether a beacon has not been received within a predetermined time period; and distributing a first beacon to a second slave device if no beacon has been received within the predetermined time period; wherein for the first slave device to remain in the master-slave-network, a beacon be received by the first slave device within the predetermined time period. | 07-04-2013 |
20130176844 | Mobile Internet Access Node, System and Method for Finding Partners - The present invention provides an MiAN, a system and a method for finding partners for use in an MiAN cluster system. The method comprises the step of performing, by the slave MiAN, search on working channels of the proximity interface in accordance with a preset search order, and trying to establish a communication connection with the proximity interface of a master MiAN with respect to the MiANs that have been searched during the search process. When selecting the working channels of the proximity interface, all the master MiANs in the clustering system perform search in accordance with the search order, and operate on the channel which has been searched first in accordance with the search order and the channel quality of which meets a predetermined requirement. According to the present invention, the processes of finding, selecting and binding partners in the MiAN cluster system will be accelerated. | 07-11-2013 |
20130188475 | METHOD AND APPARATUS FOR ESTABLISHING ROUTING PATH IN MULTI-HOP NETWORK - The present invention relates to methods and apparatuses for establishing a routing path in a multi-hop network. The methods comprises (a) transmitting a notification message associated with communication problem to neighboring nodes, (b) deriving approaching characteristics of a communication problem-causing element from the notification message, and (c) establishing a routing path based on the approaching characteristics of the communication problem-causing element. With the methods and apparatuses, it is possible to determine a path that is expected to experience a communication problem based on the approaching characteristics of a communication problem-causing element and to adaptively establish a reliable routing path. | 07-25-2013 |
20130188476 | METHOD FOR PROVIDING PROTECTED CONNECTION BETWEEN L2 COMMUNICATION NETWORKS - A method and system are provided for connecting at least three provider peer elements PEs located in two L2 network sites, via a provider network, wherein at least in one of the L2 sites and two of the provider peer elements PEs are connected to a customer equipment CE forming together a dual homing structure. The method and system are characterized in that they rely on the use of only a single PW in the provider network that extends between PEs of the two L2 network sites while ensuring traffic protection for the PW in the provider network, and ensuring that in case of a failure of one of the PEs or its connection to the customer equipment at one of the sites, the other L2 network site remains unaware of the failure, so that once established, traffic communication over the PW is maintained like no failure has happened. | 07-25-2013 |
20130235716 | DYNAMIC PROTECTION AGAINST FAILURE OF A HEAD-END NODE OF ONE OR MORE TE-LSPS - In one embodiment, a repair label switched path (LSP) is established for a primary LSP having a head-end node. The repair LSP extends from a neighboring upstream node of the head-end node to a downstream neighboring node of the head-end node. When a failure of the head-end node is detected, the neighboring upstream node reroutes traffic onto the repair LSP. The rerouted traffic rejoins the primary LSP at the down-stream neighboring node. The neighboring upstream node refreshes state of the primary LSP to maintain the primary LSP after failure of the head-end node. | 09-12-2013 |
20130242720 | METHOD AND APPARATUS FOR COORDINATION OF SELF-OPTIMIZATION FUNCTIONS IN A WIRELESS NETWORK - A network management device and method for coordination of self-optimization functions in a wireless network. A network management device for coordination of self-optimization functions includes one or more processors and an interface. The interface communicates with a plurality of enhanced node Bs (eNodeBs). The interface is arranged to receive a request to change a coverage or a capacity of an enhanced node B (eNodeB). The interface is further arranged to transmit a query to the eNodeB to obtain a self-optimizing network (SON) coordination state of the eNodeB. The one or more processors are arranged to determine whether to grant or deny the request based on a coordination policy and the SON coordination state. | 09-19-2013 |
20130258839 | INTER-CHASSIS REDUNDANCY WITH COORDINATED TRAFFIC DIRECTION - A method, in a first network element of an inter-chassis redundancy (ICR) system, of cooperating with a second network element of the ICR system to provide ICR. The network elements are coupled by a synchronization channel. IP addresses are announced with a favorable traffic direction attribute. It is determined that the second network element either has announced the IP addresses with an unfavorable traffic direction attribute less favorable than the favorable direction attribute, or has not announced the IP addresses. Sessions that are connected through the IP addresses are handled. Session state synchronization messages that include session state for the handled sessions are transmitted over the synchronization channel to the second network element. It is determined, after an occurrence of a failure event that inhibits the first element from handling the sessions, that the IP addresses have been announced by the second network element with a favorable traffic direction attribute. | 10-03-2013 |
20130286817 | THREE STAGE FOLDED CLOS OPTIMIZATION FOR 802.1AQ - A three stage folded Clos network is used for Ethernet routing with improved efficiency for computational complexity, network administration, multicast addressing and load redistribution upon failure. The network includes an array of root nodes coupled to an array of edge nodes. Forwarding states are computed and installed for spanning trees rooted on the root nodes. When an edge node is identified as having a failed connection to a root node, a shortest path first (SPF) tree rooted on that edge node is constructed for each Backbone VLAN identifier (B-VID) for the spanning trees rooted on that root node and use the failed connection. A filtering database in each node is populated for edge node pairs having a common service identifier, and unicast and multicast data are forwarded between the edge node pairs according to the filtering database via the SPF trees using a hybrid multicast addressing. | 10-31-2013 |
20130301403 | FAST REROUTE USING LOOP FREE ALTERNATE NEXT HOPS FOR MULTIPOINT LABEL SWITCHED PATHS - The techniques of this disclosure provide local protection for network traffic in multipoint label switched paths (LSPs) due to link or node failure using loop-free alternate (LFA) next hops. The techniques include establishing a vanilla or point-to-point (P2P) LSP with LFA next hops between routers of a multipoint LSP for use in the event of link or node failure in the multipoint LSP. Upon a failure, the multicast traffic is tunneled between the routers using the P2P LSP with LFA to an alternate next hop with an associated label stack. The techniques of this disclosure define the label stack as including a P2P LSP label as well as a multipoint LSP label. In this way, the P2P LSP with LFA may be used for fast reroute (FRR) of traffic in the multipoint LSP until a convergence process completes for a new multipoint branch of the multipoint LSP. | 11-14-2013 |
20130322234 | METHODS AND DEVICES FOR OPTIMIZED CELL ACQUISITIONS - Access terminals are adapted to blacklist one or more neighboring cells from acquisition attempts. For instance, an access terminal may receive a transmission including a list of neighboring cells to be monitored while connected to a particular serving cell. The access terminal may determine that a predefined number of consecutive acquisition attempts with a particular neighboring cell have failed. In response to failure of the predefined number of consecutive acquisition attempts, the access terminal can blacklist the neighboring cell from subsequent acquisition attempts for a predefined blacklisting period. Following the duration of the blacklisting period, the access terminal may conduct a subsequent acquisition attempt with the neighboring cell. Other aspects, embodiments, and features are also claimed and described. | 12-05-2013 |
20130343178 | FAST FAILOVER OF ACCESS POINTS IN A SPLIT-PLANE DEPLOYMENT - A method, system and computer readable medium for fast failover of an access point are described. A system can cause a failover of a first wireless access point when a wireless control point determines that a first wireless switching plane has failed through a platform link failure mechanism. The system can also prevent a failover of the first wireless access point or a second wireless access point when a message is received from both the first wireless switching plane and a second wireless switching plane indicating that the other wireless switching plane has failed. | 12-26-2013 |
20140003228 | Optimizations in Multi-Destination Tree Calculations for Layer 2 Link State Protocols | 01-02-2014 |
20140016456 | MOBILE GATEWAYS IN POOL FOR SESSION RESILIENCE - Embodiments of the invention include a method for providing UE session resilience performed in a first PDN-GW that is coupled to a second PDN-GW, which are both in a PDN-GW pool. The method provides UE session resilience by allowing the first PDN-GW to provide connectivity for UE sessions previously serviced by the second PDN-GW after the second PDN-GW becomes non-operational. The first PDN-GW recognizes that the second PDN-GW failed and then activates a plurality of standby UE sessions. Each standby UE session is a backup UE session corresponding to a previously active UE session serviced on the second PDN-GW. Each standby UE session is associated with a UE device and a network resource identifier of an APN slice. The first PDN-GW transmits a message to a SGW that is servicing the UE sessions that indicates that the SGW should direct traffic previously bound for the second PDN-GW to the first PDN-GW. | 01-16-2014 |
20140029412 | SYSTEMS AND METHODS FOR PROVIDING ANYCAST MAC ADDRESSING IN AN INFORMATION HANDLING SYSTEM - An information handling system is provided. The information handling system includes systems and methods for providing an anycast MAC addressing capability to a network. The anycast MAC address may be provided by creating and using virtual routing bridges, which in the network topology appear in front of service-providing nodes associated with the anycast MAC address. The physical routing bridges that neighbor the virtual routing bridge in the network are configured so as to provide the routing bridge functions to the virtual routing bridge, including propagating network topology information representing the virtual routing bridge to the rest of the network. | 01-30-2014 |
20140029413 | SYSTEM AND METHOD USING RSVP HELLO SUPPRESSION FOR GRACEFUL RESTART CAPABLE NEIGHBORS - A system, method and apparatus adapting one or more routers or nodes in a network to operate in a first mode to exchange hello messages with neighboring nodes to indicate thereby active or live status, and to operate in a second mode to avoid the use of hello messages by opportunistically relying upon service or management protocols to convey active or live status. | 01-30-2014 |
20140029414 | SYSTEM, METHOD AND APPARATUS FOR SIGNALING AND RESPONDING TO ERO EXPANSION FAILURE IN INTER-DOMAIN TE LSP - A system, method and apparatus for performing a constraint base shortest path computation (CSPF) in a manner excluding those nodes indicated as having failed an ERO expansion, the indication being provided via an error code within an RSVP path message associated with setup of an alternate LSP. | 01-30-2014 |
20140029415 | Relaying Information for an Unreliably Heard Utility Node - Data of a utility node that is unreliably heard may be relayed through another utility node. In some examples, utility nodes of a star network may attempt to transmit data to a collector, a repeater, a relay, a router, or a mobile device. When it is determined that a utility node is unable to reliably transmit data, a relay relationship may be established so that data of the unreliable utility node is relayed through the network. | 01-30-2014 |
20140056123 | SYSTEM AND METHOD OF FAILURE HANDLING IN A RADIO ACCESS NETWORK - Method and system of failure handling in a radio access network that minimizes the recovery time when a core node fails by storing the routing information of the core node and, whenever said core node fails, loading the routing information in an auxiliary node with the same hardware and software configuration as the core node. The traffic received at the core node is then routed to the auxiliary node through a physical connection that is transparent to the radio access network. The amount of routing information required by this system is minimal, and thus the recovery time is greatly reduced. | 02-27-2014 |
20140056124 | Communication Devices and Methods for Performing Communication - A infrastructure station in a cellular mobile communication system, the infrastructure station includes a infrastructure station core configured to provide infrastructure station functionality to a plurality of dependent stations, a topographer configured to discover a network topology and designate a failover topology from the network topology for use in the event that the infrastructure station fails thereby no longer being capable of providing infrastructure station functionality to the plurality of dependent stations, the failover topology comprising failover stations, and a synchronizer configured to periodically provide timing estimates of dependent stations to the failover stations such that network reentry after infrastructure station failure is shorter than normal network entry. | 02-27-2014 |
20140064058 | BYTE CACHING IN WIRELESS COMMUNICATION NETWORKS - Various embodiments provide byte caching in wireless communication networks. In one embodiment, a plurality of data packets are received through an internet protocol (IP) data flow established between a wireless communication device and at least one server. Each of the plurality of data packets are combined into a packet bundle. A determination is made as to whether a second byte caching system is available. The packet bundle is transformed using one or more byte caching operations based on a second byte caching system being available. The transformed packet bundle is sent to the second byte caching system using an IP communication mechanism. | 03-06-2014 |
20140064059 | NETWORK BACKUP DEVICE AND NETWORK SYSTEM - Provided are a network backup device and a network system. The network backup device includes a first connector configured to connect with one or more ports of a first network equipment, a second connector configured to connect with one or more second network equipment, a third connector configured to connect with a third network equipment, a switching module configured to aggregate data transmitted from the second connector, transfer the aggregated data to the third connector, and distribute data transmitted from the third connector to the second connector, and a switch configured to, in response to a fault occurring in a port of the first network equipment, switch from a connection between the second connector and the faulty port of the first network equipment to a connection between the second connector and the switching module. | 03-06-2014 |
20140071811 | ACCESS METHOD AND SYSTEM OF CUSTOMER PREMISE EQUIPMENT, AND BROADBAND NETWORK GATEWAY - The present invention provides an access method and system of a customer premise equipment, and a broadband network gateway. The access method of a customer premise equipment includes: receiving, by a BNG in a BNG pool, an access request packet sent by a CPE, where the access request packet carries an identifier of a CPE group to which the CPE belongs; and obtaining, by the BNG, an access policy of the CPE group according to the identifier of the CPE group, and performing access control on the CPE according to the access policy. Through the present invention, a BNG in a BNG pool is enabled to provide an access service for a CPE according to an access policy, so that when a BNG in a BNG pool is faulty, a BNG that is not faulty in the BNG pool can provide an access service for a CPE originally accessing the faulty BNG, thereby improving the reliability of the entire network. | 03-13-2014 |
20140078888 | PROCEDURE, APPARATUS, SYSTEM, AND COMPUTER PROGRAM FOR DESIGNING A VIRTUAL PRIVATE NETWORK - A procedure for designing a virtual private network, and a system, apparatus, and computer program that operate in accordance with the procedure. The procedure includes receiving at least one of network information, a bandwidth objective and a protection objective. A mesh algorithm is executed based on the at least one of the network information, the bandwidth objective and the protection objective, to generate one or more mesh algorithm results. | 03-20-2014 |
20140078889 | AUTOMOTIVE NEURAL NETWORK - Network node modules within a vehicle are arranged to form a reconfigurable automotive neural network. Each network node module includes one or more subsystems for performing one or more operations and a local processing module for communicating with the one or more subsystems. A switch coupled between the one or more subsystems and the processing module re-routes traffic from the one or more subsystems to an external processing module upon failure of the local processing module. | 03-20-2014 |
20140078890 | SERVICE RESTORATION PROCESSING METHOD AND MOBILITY MANAGEMENT NETWORK ELEMENT - Determining, by a first mobility management network element and a second mobility management network element that are ISR associated, that a serving gateway fails, and saving, by the first mobility management network element and the second mobility management network element, a context of a user equipment that the serving gateway serves; receiving, by the first mobility management network element or the second mobility management network element, a trigger, and executing a service restoration process for the user equipment. According to the embodiments of the present invention, the mobility management network element executes a service restoration process, thereby ensuring normal operation of a service. | 03-20-2014 |
20140086042 | SYSTEM AND METHOD FOR MANAGING ACCESS POINT FAILOVER WITHIN A WIRELESS MESH NETWORK - A node within a wireless mesh network is configured to select a primary path through an access point and to designate that access point as the primary access point for the node. The access point then transmits a failover message indicating that the node designated that access point as the primary access point for the node at a particular time. When another access point receives the failover message, the other access point may determine that the first node has also designated the other access point as the primary access point for the node, and may then de-register the node and stop advertising a primary path to the node. | 03-27-2014 |
20140086043 | System and Method for Maintaining Connectivity in a Single-Hop Network Environment - A method is provided in one example embodiment and includes receiving a first pseudo-node identifier associated with a first network node via a network. The first pseudo-node identifier is generated by the first network node in a first designated intermediate system (DIS) operation. The method further includes detecting a loss of connectivity to the first network node, and receiving a second pseudo-node identifier associated with a second network node via the network. The second pseudo-node identifier is generated by the second network node in a second DIS operation. The method further includes executing a first network path determination operation using the first pseudo-node identifier and the second pseudo-node identifier when an elapsed time between the detecting of the loss of connectivity with the first network node and the executing of the first network path determination operation is within a predetermined threshold. | 03-27-2014 |
20140092723 | METHODS AND APPARATUS FOR CONTROLLING WIRELESS ACCESS POINTS - In some embodiments, an apparatus comprises of a first Control And Provisioning of Wireless Access Points (CAPWAP) module implemented in at least one of a memory or a processing device that is configured to be designated as a backup control module for a wireless access point during a first time period. The first CAPWAP control module is configured to receive state information associated with the wireless access point during the first time period from a second CAPWAP control module. The second CAPWAP control module is designated as a primary control module for the wireless access point during the first time period. The first CAPWAP control module is configured to be automatically designated as the primary control module during a second time period after the first time period and in response to the second CAPWAP control module not operating according to at least one predefined criterion. | 04-03-2014 |
20140092724 | SYSTEM AND METHOD FOR FAIL-SAFE COMMUNICATION ACROSS A COMPROMISED COMMUNICATION CHANNEL OF A NETWORK DEVICE - A system and method for providing communication over a compromised communication channel in a system having a first node and a second node connected via the communication channel is provided. For example, a signaling circuit may be provided. The signaling circuit includes a master signal electrically connected to first and second portions of the communication channel. The first and second portions of the communication channel are employed in the first node. The signaling circuit further includes a slave signal processor arrangement coupled to the master signal processor arrangement and electrically connected to third and fourth portions of the communication channel. The third and fourth portions of the communication channel are employed in the second node. | 04-03-2014 |
20140092725 | METHOD AND FIRST NETWORK NODE FOR MANAGING AN ETHERNET NETWORK - A method and a first network node for managing an Ethernet network are disclosed. The Ethernet network comprises the first network node, a second network node and a third network node. The Ethernet network is configured as a Spanning Tree Protocol domain, STP domain. A first root is serving the STP domain. The first network node detects a failure of the first root. Then, the first network node sends a respective first frame indicating a second root to serve the STP domain. The first network node receives, from the second network node, a second frame indicating access to the first root via the third network node. Next, the first network node discards the second frame indicating access to the first root. | 04-03-2014 |
20140092726 | METHOD FOR MAPPING A NETWORK TOPOLOGY REQUEST TO A PHYSICAL NETWORK AND COMMUNICATION SYSTEM - A method for mapping a network topology request to a physical network is described. For each of a plurality of primary nodes included in the network topology request a plurality of nodes in the physical network is determined that meet a primary resource requirement associated with the primary node, and from the nodes determined one or more node pairs connected in the physical network by a path are selected that meets a backup connection requirement for a connection between a primary node and its backup node. Then, the paths in the physical network between node pairs associated with interconnected primary nodes are determined. | 04-03-2014 |
20140092727 | SCALABLE RELIABLE FAILOVER IN A NETWORK - A method is provided for establishing a reliable communication channel between an encapsulation node and a cluster of decapsulation nodes across a communication network. The method is implemented at the encapsulation node and comprises the following steps. A primary session is initialized with a primary decapsulation node in the cluster of decapsulation nodes during which an assigned address is received. A redundant session is initialized with a redundant decapsulation node in the cluster of decapsulation nodes. Data is transmitted to and received from the decapsulation node until a failure is detected. Once the failure is detected, data is transmitted to and received from the redundant decapsulation node instead of the primary decapsulation node. | 04-03-2014 |
20140098658 | NODE REPAIR IN A MESH NETWORK - In embodiments of the present invention improved capabilities are described for sensing a change in a network topology using a discovery node in a mesh network; transmitting an explore frame, based at least in part on the sensed change, from the discovery node to a destination node using an intermediate node; receiving a response to the explore frame from the destination node; determining at least one functional network route from the discovery node to the destination node based at least in part on route information received in association with the response to the explore frame, wherein the route information includes a node path; and transmitting an instruction to the destination node from the discovery node based on a reverse node path. | 04-10-2014 |
20140105001 | Distributed Failure Recovery in a Routed Ethernet Network - Link identifiers such as VIDs, selected from a defined range of values, are locally assigned by each node on a link state protocol controlled Ethernet network to each of its links or adjacencies. The link identifiers are assigned by the nodes such that each link or adjacency at the node is uniquely identified by a different link identifier. A link state protocol adjacency notification mechanism or other flooding mechanism is used to disseminate the locally assigned link identifiers to other nodes on the link state protocol controlled Ethernet network. The link identifiers are added by the nodes to their topology databases to enable detour routes to be locally calculated by the nodes on the network in a distributed manner. Upon occurrence of a failure, the link identifiers are used to source route traffic around the failure so that traffic may continue to traverse the link state protocol controlled Ethernet network. | 04-17-2014 |
20140119174 | TECHNOLOGY FOR NETWORK COMMUNICATION BY A COMPUTER SYSTEM USING AT LEAST TWO COMMUNICATION PROTOCOLS - A network adapter has a first and second virtual local area network (“VLAN”) device configured on each of first and second physical ports of the network adapter. The second VLAN devices are configured as a logically bonded, virtual device. | 05-01-2014 |
20140140202 | METHOD AND SYSTEMS FOR AN INCOMING UNIDIRECTIONAL OUTAGE BYPASS FOR A VOICE OVER INTERNET PROTOCOL PRIVATE BRANCH EXCHANGE SYSTEM - A system and method are disclosed herein for providing a unidirectional outage bypass for incoming communications via a hosted Voice-over Internet Protocol (VoIP) private branch exchange (PBX) system to a session initiation protocol (SIP) device. An outage monitoring system is in communication with both the unidirectional bypass system and one or more bypass enablers that act at the direction of the unidirectional bypass system. The outage monitoring system detects outages and overloads, as well as, network failures between network components, the VoIP PBX, Client Devices and the public switched telephone network (PSTN). The unidirectional bypass system, in response to detection of an outage, determines error-handling procedures for the unidirectional bypass based on bypass configuration data. The bypass enablers forward incoming communications between the PSTN and a bypass destination following a bypass route in accordance the error-handling procedures, by bypassing components that are currently experiencing failures or overloads. | 05-22-2014 |
20140177434 | FAILOVER RECOVERY METHODS WITH AN EDGE COMPONENT - Systems and/or methods may be used to handle failure of a HeNB/HNB, a SeGW, or an edge component. For example, actions may be performed by the edge component when a HeNB, a CGW, or a SeGW fails. The actions that may be performed when a SeGW may fail may include tearing down an IPSec tunnel to a HeNB connected to the edge component, using S1-AP signaling, a signaling interface (e.g., a connection management interface (CMI), an X2 interface, and/or a S | 06-26-2014 |
20140177435 | WIRELESS TRANSMISSION SYSTEM, WIRELESS TRANSMISSION METHOD, AND WIRELESS COMMUNICATION APPARATUS - A wireless transmission system includes an active wireless communication apparatus, a standby wireless communication apparatus, and a selecting apparatus for switching an operation. The standby wireless communication apparatus receives a signal transmitted from an opposing apparatus. When the standby wireless communication apparatus detects a failure information indicating that a failure has occurred in the active wireless communication apparatus as a result of reception, the standby wireless communication apparatus performs notification that the failure has occurred in the active wireless communication apparatus. The selecting apparatus that has received the notification performs switch control for switching the operation. Accordingly, it is possible to continue communication in a short switching time in case of a failure while maintaining high frequency utilization, for example. | 06-26-2014 |
20140192634 | System and Method for Network Failover and Network Selection with Multi-Mode Modem in Remote Access Points - The present disclosure discloses a method and network device for network failover and/or network selection with a multi-mode modem in remote access points. A RAP initially is set to allow the modem's firmware to select an ISP-preferred available network. Then, the RAP collects network selection attributes, including RSSI, for the selected network, derives a NSC value based on the attributes, and determines whether the derived NSC value is within an expected range. If so, the device establishes a secure tunnel connection through the modem on the modem-selected network. Otherwise, the RAP commands the modem connect to an alternative network, and derives the NSC value for the alternative network selected by the RAP. If the NSC value for the alternative network is within an expected range, the RAP establishes a secure connection on the alternative network. On rebootstrap, the RAP repeats the above operations until a stable network is selected. | 07-10-2014 |
20140211610 | METHOD AND APPARATUS FOR MANAGING CALLS - A system that incorporates teachings of the present disclosure may include, for example, one or more components for receiving a call request at a first server from a first end user device, transmitting the call request from a first server to an intermediate server for establishing a voice or video call over an IP multimedia subsystem between the first end user device and a second end user device via a second server, and routing the voice or video call request from the first server to the second server using a second IP address when an undesired condition is determined to be associated with the IP multimedia subsystem. The second IP address can be obtained from a group of IP addresses stored in a memory of the first server and the group of IP addresses can be associated with other servers. Other embodiments are disclosed. | 07-31-2014 |
20140211611 | TUNNEL MANAGEMENT METHOD, TUNNEL MANAGEMENT APPARATUS, AND COMMUNICATIONS SYSTEM - Embodiments of the present invention relate to communications technologies and disclose a tunnel management method, a tunnel management apparatus, and a communications system so that a node that causes failure of a tunnel management request can be determined According to the present invention, a response returned by a tunnel management node to an initiating node includes not only a cause value of tunnel management request failure but also information of the node that causes failure of the tunnel management request, so that the initiating node can find the node that causes failure of the tunnel management request and determine the error checking direction. The present invention is applicable to network devices in a communications network. | 07-31-2014 |
20140219079 | PROVISIONING OF A NEW NODE JOINING AN EXISTING CLUSTER IN A DATA CENTER ENVIRONMENT - A method is provided in one example embodiment and includes identifying for a new node added to a communications network a plurality of existing network nodes respectively connected to one of a plurality of ports of the new node and capable of implementing a particular routing protocol; selecting one of the identified existing network nodes to serve as a designated forwarder (“DF”) for the new node; performing a power on auto provisioning (“PoAP”) procedure in connection with the new node; and opening the ports of the new node to which the identified existing network nodes are connected. | 08-07-2014 |
20140219080 | METHOD AND APPARATUS FOR INTERWORKING PROTECTION SWITCHING - In a multi-domain network in which at least one working interconnected node and at least one protection interconnected node are formed between a first service end node and a second service end node, when a failure has occurred in both a working transport entity and a first protection transport entity of a node, a node having recognized a failure performs switching to a second protection transport entity that is connected to a corresponding interconnected node. | 08-07-2014 |
20140241147 | SYSTEM AND METHOD FOR RAPID LINK FAILURE HANDLING - A system and method for link failure handling includes detecting a failure in a first network connection between a first network switching unit and a second network switching unit, where the first network connection is associated with a first communication port of the first network switching unit; suspending the first communication port from a link aggregation group (LAG), where the first communication port is associated with the LAG; and associating one or more first inter-chassis link (ICL) ports with the LAG. The first ICL ports are associated with a first ICL coupling the first network switching unit to a third network switching unit. The first network switching unit and the third network switching unit are peers. | 08-28-2014 |
20140247710 | PROACTIVE REDIRECTION OF TRAFFIC DURING LOW VOLTAGE (BROWNOUT) CONDITION AND PREFERENTIAL TREATMENT OF HIGH PRIORITY TRAFFIC - A methodology is described such that when a brownout condition is being experienced by a network node, the network node may autonomously notify the adjacent nodes to reroute the traffic for different classes of service based on programmable low voltage thresholds. The present approach helps lower transit traffic disruption while providing a framework to give preferential treatment to high priority traffic traversing the node. | 09-04-2014 |
20140247711 | PEER CONNECTIVITY USING RECIPROCAL WIRELESS CONNECTIONS - Reciprocal wireless connections may be established between a pair of devices to support failover, load balancing, traffic distribution, or other peer-to-peer connectivity features. Each device of a pair of devices may implement both a local wireless access point and a local wireless station to communicate with the other device of the pair of devices. Establishment of a second wireless connection between the pair of devices may be coordinated using a protocol extension of a first wireless connection. A multiplexing (MUX) component may coordinate traffic among the reciprocal wireless connections. | 09-04-2014 |
20140269257 | SHADOW ACCESS POINT FOR HIERARCHICAL TREE NETWORK USING 802.11 INFRASTRUCTURE NODES IN FIRE DETECTION SYSTEMS AND OTHER SYSTEMS - A system includes first and second access points. Each access point includes one or more 802.11 wireless radios configured to communicate with a wireless node. The first and second access points are both configured to wirelessly receive first data from the wireless node at substantially a same time and forward the first data. The first and second access points are also both configured to receive second data for the wireless node. The first access point is configured to wirelessly transmit the second data to the wireless node, and the second access point is configured to refrain from transmitting the second data to the wireless node while the first access point is operating properly. | 09-18-2014 |
20140269258 | SYSTEM AND METHOD FOR HANDLING RESOURCE FAILURE IN A HYBRID CONTACT CENTER OPERATIONS ENVIRONMENT - A system for providing failover capabilities in a hybrid operations environment including a first operations environment and a second operations environment includes a first controller in a first operations environment configured to receive registration information for an agent device, and a second controller in a second operations environment configured to receive the registration information from the first controller. The first controller is a stand-by controller and the second controller is a primary controller. In response to determining that the second controller is not available for routing an inbound call, a media gateway is configured to transmit a request to the first controller in the first operations environment for routing the call to the agent device. | 09-18-2014 |
20140269259 | COMMUNICATION SYSTEM FOR MANAGING LEASED LINE NETWORK WITH WIRELESS FALLBACK - Embodiments of the present disclosure relate to a communication system for managing leased line networks. The system comprises of a router to route data from one network to another network, and a V.35 modem configured to receive the data from the router and transmit the data to a predefined destination using internet protocol (IP) network. The interface which connects the router with the V.35 modem is a V.35 interface. The IP network requires an ethernet interface to receive the data and to transmit the data to a destined location. The V.35 modem designed converts the V.35 interface to an ethernet interface, but since the ethernet interface is expensive, the V.35 modem converts the ethernet interface to an ADSL interface for establishing ADSL connection towards the IP network. The system further comprising an interface to 3G/LTE/Wifi which is used as a redundant path in the event of failure of ADSL interface. | 09-18-2014 |
20140286155 | System and Method for Protection Against Edge Node Failure - In one embodiment, a method includes determining, by an edge router, a plurality of prefixes reachable by the edge router, each prefix indicating a range of Internet Protocol (IP) addresses. The method further includes grouping, by the edge router, the plurality of prefixes into one or more groups, wherein each group is associated with a particular repair edge router and the prefixes in each particular group are reachable by both the edge router and the particular repair edge router associated with the particular group. The method further includes communicating instructions, from the edge router to a core router, to send data packets associated with the prefixes in each particular group to the particular edge router associated with the particular group if the edge router becomes unreachable. | 09-25-2014 |
20140293772 | BASE STATION, COMMUNICATION SYSTEM, AND CONTROL METHOD FOR BASE STATION - In order to more quickly detect a failure in a radio base station and complement the coverage thereof, a first base station included in a communication system forms a first cell to conduct radio communication with one or more mobile stations. A second base station, which is placed adjacent to the first base station, forms a second cell to conduct radio communication with one or more mobile stations. The first base station conducts communication with the second base station to monitor whether or not a failure occurs in the second base station. When it is detected as a result of the monitoring that the failure occurs in the second base station, the first base station expands coverage of the first cell so as to complement that of the second cell. | 10-02-2014 |
20140307541 | Distributed Fast Remote Cutover of Traffic upon Local Failure in an Overlay Transport Visualization Network - Techniques are presented herein for optimizing traffic routing in overlay networks. At a first edge device located at a first site in a network, a message is received that indicates address information of a network device. The address information of the network device is stored in an address table. The address information is associated with a site identifier that identifies a second site at which the network device is located. The site identifier is mapped to an identifier associated with a second edge device that is responsible for routing traffic to network devices at the second site. | 10-16-2014 |
20140321266 | INTERNET PROTOCOL ANALYZING - Included are methods for facilitating routing of control data associated with a communication to a plurality of recorders. One such method, among others, includes receiving control data related to a communication and routing the received control data to at least one recorder via a layer | 10-30-2014 |
20140328162 | METHOD AND APPARATUS FOR SETTING RADIO LINK OF TERMINAL IN WHICH MULTIPLE CARRIERS ARE INTEGRATED IN MOBILE COMMUNICATION SYSTEM - A method and apparatus for configuring a radio link of a terminal communicating via aggregated carriers including a primary cell and a secondary cell are provided. The method includes detecting a Radio Link Failure (RLF) for the secondary cell, deactivating the secondary cell, and reporting at least one of a measurement result of the secondary cell and a measurement result of neighboring cell of the secondary cell to a base station. The apparatus includes a transceiver for communicating with a base station, and a controller configured to detect a RLF for the secondary cell, to deactivate the secondary cell, and to report at least one of a measurement result of the secondary cell and a measurement result of neighboring cell of the secondary cell to the base station. | 11-06-2014 |
20140334289 | Dynamic Point to Point Mobile Network Including Intermediate Device Aspects System and Method - A computationally implemented system and method that is designed to, but is not limited to: electronically receiving one or more communication network relay related transmissions at least in part associated with one or more first portions of mobile operating system operated intermediate electronic communication device functionality related at least in part to communication network relay functionality of a mobile operating system operated intermediate electronic communication device as one or more standby communication network relays upon activation thereof for use by one or more origination electronic communication devices to communicate at least in part with one or more destination electronic communication devices, the mobile operating system operated intermediate electronic communication device functionality including second portions related at least in part to mobile electronic communication device functionality. In addition to the foregoing, other method aspects are described in the claims, drawings, and text forming a part of the present disclosure. | 11-13-2014 |
20140355417 | METHOD AND APPARATUS FOR PROCESSING NAS SIGNALING REQUEST IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more particularly, to a method and an apparatus for processing a NAS signaling request. A method for performing a non-access stratum (NAS) signaling process by means of a terminal in a wireless communication system according to one embodiment of the present invention comprises: a step of receiving a first message that includes information indicating a network failure from a network node of a first network; a step of starting a timer relating to a network selection; and a step of selecting a second network from among network candidates excluding the first network during the operation of the timer relating to a network selection. | 12-04-2014 |
20140355418 | METHODS AND DEVICES FOR OPTIMIZED CELL ACQUISITIONS - Access terminals are adapted to blacklist one or more neighboring cells from acquisition attempts. For instance, an access terminal may receive a transmission including a list of neighboring cells to be monitored while connected to a particular serving cell. The access terminal may determine that a predefined number of consecutive acquisition attempts with a particular neighboring cell have failed. In response to failure of the predefined number of consecutive acquisition attempts, the access terminal can blacklist the neighboring cell from subsequent acquisition attempts for a predefined blacklisting period. Following the duration of the blacklisting period, the access terminal may conduct a subsequent acquisition attempt with the neighboring cell. Other aspects, embodiments, and features are also claimed and described. | 12-04-2014 |
20140362682 | Determining the Operations Performed Along a Service Path/Service Chain - Presented herein are techniques performed in a network comprising a plurality of network nodes each configured to apply one or more service functions to traffic that passes the respective network nodes in a service path. At a network node, an indication is received of a failure or degradation of one or more service functions or applications applied to traffic at the network node. Data descriptive of the failure or degradation is generated. A previous service hop network node at which a service function or application was applied to traffic in the service path is determined. The data descriptive of the failure or degradation is communicated to the previous service hop network node. | 12-11-2014 |
20140369184 | General User Network Interface (UNI) Multi-homing Techniques For Shortest Path Bridging (SPB) Networks - A method, apparatus and computer program product for providing multi-homing techniques for SPB networks is presented. A set of UNI nodes that receive multicast packets are determined based on Backbone Media Access Control-Destination Address (BMAC-DA)/I-Tag Service Identifier (I-SID) of received multicast packets for multicast packets within a transport network. A separate Egress Port Mask is determined for each Backbone-Virtual Local Area Network (B-VLAN) of the transport network, wherein the Egress Port Mask is determined such that only one UNI node of the set of UNI nodes forwards said multicast packets. A set of UNI copies of said multicast packets are filtered out by applying the Egress Port Mask, wherein copies that are not in the Egress Port Mask are dropped. Copies of multicast packets that are not dropped are sent out. | 12-18-2014 |
20140369185 | Next Hop Ingress Protection Of Label Switched Paths - A network node for providing ingress fault protection. The network node may be along a primary label switched path (LSP) and may be configured to receive an ingress protection request message that identifies one or more other network nodes along the primary LSP. The network node may generate a forwarding table that comprises one or more forwarding entries for the other network nodes along the primary LSP and one or more forwarding entries for the other network nodes along a backup LSP. In typical operation, the network node may receive data traffic from a first source path within a label switched network and may send the data traffic using the primary LSP. When an ingress node fault in the first source path is present, the network node may receive data traffic from a second source path and may send the data traffic using the backup LSP. | 12-18-2014 |
20140376361 | FAST REROUTE USING DIFFERENT FREQUENCY-HOPPING SCHEDULES - In one embodiment, a primary node in a shared-media communication network is selected by a node toward a destination. In response to determining the primary node, the node determines a frequency-hopping schedule of the primary node. One or more backup nodes for the primary nodes are then determined based on a frequency-hopping schedule diversity between the primary node and the one or more backup nodes. | 12-25-2014 |
20140376362 | DYNAMIC CLIENT FAIL-OVER DURING A ROLLING PATCH INSTALLATION BASED ON TEMPORAL SERVER CONDITIONS - A method, system, and computer program product for upgrade procedures in high-availability clustered systems. The method selects fail-over nodes during rolling patch installation and comprises steps for identifying a first node to upgrade, migrating services of the first node to a second node and shutting down the first node to perform its upgrade, then migrating the services back from the second node to the first node. When performing an upgrade of the other nodes of the cluster (e.g., nodes of the cluster other than the first node), rather than migrating the services of the node to be upgraded to another node that still needs to be upgraded, instead migrate the services of the node to be upgraded to a node that has already been upgraded. This reduces the brown-out time at least to the extent that this method incurs only one migration per node rather than two migrations per node. | 12-25-2014 |
20150009805 | ENHANCED BYPASS OPERATION IN SIMULCAST RADIO COMMUNICATION SYSTEM - An enhanced bypass mode simulcast radio communication system ( | 01-08-2015 |
20150009806 | SCALABLE BGP PROTECTION FROM EDGE NODE FAILURE USING CONTEXT LABELS IN DATA PACKETS IDENTIFYING BACKUP ROUTER MIRROR TABLE - In one embodiment, a method comprises detecting, by a first provider edge router, a second provider edge router providing reachability to a prescribed destination address prefix via a protected next hop address; allocating, by the first provider edge router, a minor forwarding table associated with the second provider edge router and identifying a destination used by the second provider edge router for reaching the prescribed destination address prefix; and the first provider edge router sending repair information to a Border Gateway Protocol (BGP)-free core network router in the core network, the repair information enabling the BGP-free core network router to add a context label and reroute a received data packet to the first provider edge router if the second provider edge router is unavailable, the context label enabling the first provider edge router to identify the destination in the rerouted data packet for delivery to the destination address prefix. | 01-08-2015 |
20150009807 | FAULT-RESILIENT BROADCAST, MULTICAST, AND UNICAST SERVICES - In general, various capabilities related to fault-resilient services within communication networks are presented. The services may include broadcast services, multicast services, unicast services, or the like, as well as various combinations thereof. A capability for providing local protection to unicast traffic at a node associated with a pair of redundant trees is presented herein. A capability for providing local protection to multicast traffic at a node associated with a pair of redundant trees is presented herein. A capability for constructing a pair of redundant trees is presented herein. A capability for constructing a pair of redundant trees includes partitioning a graph into a pair of partitions based on a link coloring mechanism and constructing the pair of redundant trees based on the pair of partitions. | 01-08-2015 |
20150023153 | COMMUNICATION CONTROL METHOD, HOME BASE STATION, AND CORE NETWORK DEVICE - A communication control method applicable to a mobile communication system provided with a first gateway device, which manages a home base station, on a first communication path between a core network device and the home base station, comprises: an establishment step of establishing, between the core network device and the home base station, a second communication path without passing through the first gateway device and passing through a second gateway device, in the case of switching to the second gateway device for managing the home base station in place of the first gateway device. | 01-22-2015 |
20150029833 | Methods, Systems, and Computer Program Products for Enabling an Operative Coupling to a Network - Methods and systems are described for enabling an operative coupling to a network. In an aspect, first data is detected for forwarding between a first node in a first network and another node by a network relay including a first network interface hardware component operatively coupled to a first network. A determination is made that a second operative coupling to a second network of a second network interface hardware component in the network relay is disabled. The second network interface hardware component is configured to enabled the second operative coupling, in response to the determination. Data received for forwarding between the first network and the second network is forwarded via the enabled second operative coupling. | 01-29-2015 |
20150036481 | System and Method for Computing a Backup Ingress of a Point-to-Multipoint Label Switched Path - A method of Path Computation Element (PCE) Communication Protocol (PCEP) communication includes sending, to a path computation element (PCE), a request to compute a backup ingress node for a Point-to-Multipoint (P2MP) Label Switched Path (LSP) in a network, and receiving, from the PCE, the backup ingress node for the P2MP LSP in accordance with the request. | 02-05-2015 |
20150036482 | Method and Apparatus for Reliable Communications in Underground and Hazardous Areas - A method and apparatus for reliable wireless voice, data and location communication for deployment in underground, industrial and other hazardous environments using a wireless mesh network. The network includes protocol for dispatch operation, emergency operation, remote supervision, remote status, asset control, machine state of health and operational management. The architecture is based on localized clusters of autonomous nodes capable of ad hoc interconnection with nearby nodes and connection to gateway nodes. The resulting network is an ad hoc mesh topology comprised of fixed mesh nodes with approximately 50% coverage overlap between nodes. This provides a reliable communication network for mobile nodes carried by personnel and sensor nodes that are fixed or mobile that supports voice, data and tracking/situation awareness. Each cluster of nodes transfers digital voice and data to gateway nodes either directly or through multi-hop transactions. | 02-05-2015 |
20150063095 | METHOD AND APPARATUS FOR PERFORMING NEIGHBOR DISCOVERY - A method and apparatus for neighbor discovery in a wireless communication system are disclosed. A neighbor seeking wireless transmit/receive unit (WTRU) may send a first beacon based on configuration information provided by the network. The neighbor WTRUs receive the first beacon and may send either a report to the network or send a second beacon to the neighbor seeking WTRU. The network may then provide neighbor WTRU information to the neighbor seeking WTRU. The neighbor discovery may be performed within a pre-defined group of WTRUs that is formed based on proximity to the WTRU and/or an attribute of the WTRU. The neighbor discovery procedure may be performed to find neighbor WTRUs in case where a WTRU fails to find any network. A neighbor list may be generated by the neighbor seeking WTRU by measuring reference signals transmitted by neighbor WTRUs on an uplink to the network. | 03-05-2015 |
20150103644 | UNCONSTRAINED SUPERVISOR SWITCH UPGRADE - In one example embodiment, a time unconstrained fabric switch software upgrade function is described for an in-switch-software-upgrade/downgrade (ISSU) in a network switch. Prior to an ISSU, Hello protocol data unit (PDU) information is stored for relevant control protocols of associated interfaces of the switch. The Hello PDU information comprises information on messages and data exchanged by the control protocols that may be used to maintain communications links of the switch. During the configuring of the ISSU, and while the control plane of the switch is, at least partially, dysfunctional, Hello PDUs are sent on the interfaces according to the stored PDU information in order to maintain the communication links. The Hello PDU information may include a time interval value for each relevant protocol that determines when Hello PDUs are sent. | 04-16-2015 |
20150103645 | CONTROLLER SIDE METHOD OF GENERATING AND UPDATING A CONTROLLER ASSIGNMENT LIST - Some embodiments provide a novel method for distributing control-channel communication load between multiple controllers in a network control system. In some embodiments, the controllers manage physical forwarding elements that forward data between several computing devices (also called hosts or host computers), some or all of which execute one or more virtual machines (VMs). The method of some embodiments distributes a controller assignment list to the host computers. The host computers use this list to identify the controllers with which they need to interact to perform some of the forwarding operations of their associated logical forwarding elements. In some embodiments, agents executing on the host computers (1) review the controller assignment list to identify the appropriate controllers, and (2) establish control channel communications with these controllers to obtain the needed data for effectuating the forwarding operations of their associated physical forwarding elements. These agents in some embodiments are responsible for out-of-band control channel communication with the controllers. | 04-16-2015 |
20150109903 | REDUNDANT COMMUNICATION FRAMEWORK - A device determines a communication failure associated with a first network, and selects, based on the communication failure, a failover device from a list of failover devices. The device and the failover devices communicate via short-range communications, and the selected failover device connects to a second network. The device provides, to the selected failover device, a request to receive a service from the first network, and determines whether the selected failover device accepts the request. When the selected failover device accepts the request, the device establishes a communication channel with the selected failover device, and receives the service from the first network via the selected failover device, the communication channel, and the second network. | 04-23-2015 |
20150109904 | SCALABLE EDGE NODE PROTECTION USING SEGMENT ROUTING - In one embodiment, a method comprises generating, by a first provider edge router associated with a first segment identifier, a primary label for reaching a destination, and repair information for reaching the destination if a second provider edge router is unavailable to reach the destination; allocating, by the first provider edge router, a first protected next-hop address associated with the first segment identifier for protected reachability to at least the destination; and sending via a core network, by the first provider edge router, an advertisement specifying the label and the repair information, enabling an ingress provider edge router to insert, into a data packet destined for the destination, the labels from the first provider edge router and the second provider edge router based on the repair information, for fast rerouting to the destination via one of the first or second provider edge router if the other is unavailable. | 04-23-2015 |
20150109905 | ROUTING MESSAGES OVER A NETWORK OF INTERCONNECTED DEVICES OF A NETWORKED CONTROL SYSTEM - The invention relates to routing messages over a network of interconnected devices of a networked control system, particularly to routing messages for individually controlling devices of a networked control system such as light sources of a lighting system. A basic idea of the invention is to determine a routing path for a message from a sender device to a destination device through the grid of interconnected devices of a networked control system, and to change the routing path, when a faulty device is contained in the routing path, in order to route the message around the faulty device, instead of determining an entirly new routing path. Thus, an efficient routing of a message over a network of interconnected device may be provided. An embodiment of the invention provides a method for routing messages over a network of interconnected devices of a networked control system, wherein the devices are arranged in an approximately rectangular grid and each device is adapted for routing messages, which were received from directly neighbored devices in the grid, to directly neighbored devices in the grid, wherein the routing comprises the acts of
| 04-23-2015 |
20150117180 | SYSTEM, APPARATUS AND METHOD FOR REDUCING FAILOVER TIME THROUGH REDUNDANCY USING VIRTUAL ACCESS POINTS - According to one embodiment of the disclosure, a non-transitory computer readable medium is described for an network device, where the medium comprising instructions which, when executed by one or more hardware processors, cause performance of a number of operations. These operations include configuring a first network device to provide network access to a client device using a first Basic Service Set Identification (BSSID) and determining that the first network device is not responsive. Based on determining that the first network device is not responsive, the one or more hardware processors further configure a second network device to provide the network access to the client device using the same first BSSID that was previously used by the first network device without the client device disassociating with the first BSSID. | 04-30-2015 |
20150124587 | LOOP DETECTION AND REPAIR IN A MULTICAST TREE - Systems, methods and transitory computer-readable storage media for detecting one or more loops in a multicast tree. The method includes calculating a multicast tree radius for a first multicast tree, the multicast tree radius representing a maximum number of hops from a root node to a furthest edge node in the first multicast tree, forwarding, by the root node, a first packet to each edge node within the first multicast tree, the first packet having a time-to-live (TTL) value equal to twice the first multicast tree radius, receiving, at the root node, a copy of the forwarded first packet, and determining an existence of a loop in the first multicast tree based at least upon receiving the copy of the forwarded first packet. | 05-07-2015 |
20150124588 | METHOD AND APPARATUS FOR HANDLING P-CSCF FAILURE AND RESTORING CONNECTIVITY - A method for restoring connectivity between a node in an IP Multimedia Subsystem, IMS, network, and a User Equipment, UE. The UE is associated with a Proxy Call Session Control Function node, P-CSCF, of said IMS network, and with at least one control node of a packet access network, through which the UE connects to the IMS network. The method allows for restoring the connectivity of the UE to an IMS network node after said IMS node has failed to establish a communication to said UE via said P-CSCF node. | 05-07-2015 |
20150124589 | Automotive neural network - Network node modules within a vehicle are arranged to form a reconfigurable automotive neural network. Each network node module includes one or more subsystems for performing one or more operations and a local processing module for communicating with the one or more subsystems. A management system enables traffic from the one or more subsystems of a particular network node module to be re-routed to an external processing module upon failure of the local processing module of that particular network node module. | 05-07-2015 |
20150138948 | Shared Keep-Alive and Failure Detection Mechanism in Distributed Network - Node, computer readable medium and method for detecting a failed node in a structured network. The method includes assigning nodes of a neighboring set either to an active group or to a passive group, wherein the nodes of the neighboring set are connected to a current node; instructing active nodes in the active group to send a keep-alive query to the current node, wherein a timing for sending the keep-alive query from the active nodes to the current node is controlled by the current node; instructing passive nodes to listen for a keep-alive query from the current node and to reply with a keep-alive query response to the current node; configuring the current node to reply with a keep-alive query response to the active nodes; and determining the failed node based on (i) the keep-alive query response received from the passive nodes and (ii) the keep-alive query sent by the active nodes. The current node is configured to not send the keep-alive query to the active nodes and the passive nodes are configured to not send a keep-alive query to the current node. | 05-21-2015 |
20150138949 | NODE APPARATUS, RECORDING MEDIUM THAT HAS STORED CONTROL PROGRAM THEREIN, AND METHOD OF OPERATING NODE APPARATUS - A node apparatus that establishes a wireless communication network through wireless communication with other node apparatuses adjacent to the node apparatus includes a memory configured to store node alive-or-dead information, which represents whether or not a node apparatus is in an abnormal state, a controller configured to perform processes including receiving a data frame, performing determination regarding an alive-or-dead state for a transmission destination node apparatus obtained from the data frame on the basis of the node alive-or-dead information stored in the memory, and determining a destination of the data frame from a transmission destination node apparatus obtained from the data frame and a transmission source node apparatus obtained from the data frame on the basis of a result of the determination, and a transmission unit configured to transmit the data frame in which the determined destination is set. | 05-21-2015 |
20150146519 | Apparatus and Methods for Supporting Control Plane Data - A wireless communications system supports control plane data and comprises: a first mobility management entity, MME; at least one second mobility management entity, MME; and a terminal device; wherein both the first MME and the at least one second MME are allocated to interoperate to support control plane data for the terminal device. | 05-28-2015 |
20150146520 | Wireless Communication System Comprising Apparatus and Methods for Accessing a Data Network - A wireless communications system supporting user plane data comprises: a first network having a first packet data network gateway (P-GW); a second network having a second P-GW operably coupled to the first network via a backhaul link; a serving gateway (S-GW) a base station; and a terminal device, wherein a single packet data network connection is created for the terminal device that traverses through the first P-GW, second P-GW, S-GW and base station. | 05-28-2015 |
20150295818 | COMMUNICATION SYSTEM, CONTROL APPARATUS, METHOD FOR CONTROLLING SAME, AND PROGRAM - A communication system includes: a plurality of nodes each of which is configured to include OAM (Operation Administration and Maintenance) functions; and a control apparatus configured to control the plurality of nodes. Each of the nodes transmits a status change notification including information about a port(s) affected by a failure(s) that has occurred in a network composed by the plurality of nodes to the control apparatus. The control apparatus determines whether to perform route control on the network on the basis of the status change notification and information about a composition of the network. | 10-15-2015 |
20150296438 | Method of Handling Link Failure and Related Communication Device - A communication device for handling a link failure comprises a storage unit for storing instructions and a processing means coupled to the storage unit. The processing means is configured to execute instructions stored in the storage unit. The instructions comprises communicating with a master base station via a first uplink (UL) carrier and a first downlink (DL) carrier; communicating with a secondary base station via a second UL carrier and a second DL carrier; detecting a link failure related to the secondary base station while communicating with the master base station; and transmitting information of the link failure and information of a measurement result related to the secondary base station to the master base station to report the link failure. | 10-15-2015 |
20150312091 | SELECTION OF ANCHOR CONTROLLERS FOR CLIENT DEVICES WITHIN A NETWORK ENVIRONMENT - According to one embodiment of the invention, a non-transitory computer readable medium for improving the scalability and redundancy of a wireless communications network. One embodiment of the non-transitory computer readable medium comprises instructions that configure a first controller, of a plurality of controllers, as a primary controller for maintaining data associated with each particular device of a plurality of devices, for each particular device of the plurality of devices, select a respective secondary controller, from the plurality of controllers, for maintaining data associated with that particular device based on a respective identifier associated with that particular device, subsequent to selecting the secondary controller for each particular device of the plurality of devices, detect an error associated with the first controller, and responsive to detecting the error associated with the first controller, establish the secondary controller selected for each particular device, based on the respective identifier, as the primary controller for that particular device. | 10-29-2015 |
20150365319 | Active/Static Path Redundancy - Delivering every packet of a stream simultaneously along two different paths gives a high assurance that the destination will receive at least one of them, even if a single failure occurs. The present idea uses the topology protocols to know when to regenerate a dual stream after one failure occurs, so that the dual delivery, and thus assurance against further failures, is maintained. | 12-17-2015 |
20150381407 | CUSTOMIZABLE HIGH AVAILABILITY SWITCHOVER CONTROL OF APPLICATION DELIVERY CONTROLLERS - System and method of determining active/standby statuses of an intermediary device with respect to a logic group based on a user defined switchover policy. A user is allowed to configure a template to determine respective health levels for multiple sets of delivery resources. Each set of resources associated with a function engine residing in a respective intermediary device. The multiple sets of resources, in conjunction with the associated function engines, are equivalently operable to provide the same service function. The template may include user-specified events and respective weight factors. The specified events are monitored and a health score is dynamically derived for each delivery resource based on the template. Based on an updated health score rank with respect to the service function, a switchover may automatically occur from an intermediary device of a lower health score to another device with a higher health score. | 12-31-2015 |
20150381477 | System and Method for Computing a Backup Ingress of a Point-to-Multipoint Label Switched Path - A method of Path Computation Element (PCE) Communication Protocol (PCEP) communication includes sending, to a path computation element (PCE), a request to compute a backup ingress node for a Point-to-Multipoint (P2MP) Label Switched Path (LSP) in a network, and receiving, from the PCE, the backup ingress node for the P2MP LSP in accordance with the request. | 12-31-2015 |
20160013972 | METHODS, SYSTEMS, AND COMPUTER PROGRAM PRODUCTS FOR ENABLING AN OPERATIVE COUPLING TO A NETWORK | 01-14-2016 |
20160021580 | Telecommunication Equipment Measuring Pre-Establishment Service Interruptions - User equipment communicating with a telecommunications network may be configured to selectively initiate a communication session with another device via a first access network of a first type. During a pre-establishment phase, the user equipment may measure the first access network to provide a first measurement. In response to the first measurement corresponding to a first service-interruption condition, the user equipment may cancel the communication session, tune a radio of the user equipment to communicate with a second access network of a second, different type, and re-initiate the communication session with the other device via the second access network. The user equipment may, after the canceling, receive a retry invitation to the communication session via the second access network, tune the radio thereto, and re-initiate the communication session with the other device via the second access network. | 01-21-2016 |
20160029229 | SYSTEMS AND METHODS FOR STATION SIGNALING IMPAIRED RECEIVER OPERATION - Methods, devices, and computer program products for station signaling impaired receiver operation are disclosed. One aspect of the present disclosure relates to a method of communication in a wireless communication network including determining an impairment causing a packet drop at a first wireless device, the impairment capable of causing the packet drop(s) based on a condition other than poor link conditions. The method further includes generating an indication of the impairment, the indication comprising an identification of the first wireless device and information about the impairment, and transmitting the indication to a second device configured to transmit packets to the wireless device. Another method of communication disclosed comprises receiving an indication that an impairment is capable of inhibiting reception of packets at another wireless device based on a condition other than poor link conditions, and adjusting a behavior of the wireless device that received the indication, based on the indication. | 01-28-2016 |
20160036624 | INTEROPERABILITY GATEWAY FOR LAND MOBILE RADIO SYSTEM - Disclosed is an interoperability gateway system that provides backup connection between a dispatch center and a Land Mobile Radio (LMR) system in the event the dispatch center is disconnected from the LMR system. In general, this may be accomplished by providing an RF link between the disconnected site and the interoperability gateway via a controller, or interoperability site network interface (ISNI), that is activated when the dispatch center is disconnected from the LMR system. The interoperability gateway provides the backup connection by allocating a control station for each channel available at the disconnected LMR system. When compared to conventional dispatch console backup schemes, the disclosed interoperability gateway system greatly reduces the equipment needed to provide dispatch console backup, thereby decreasing equipment and operation costs, and simplifying operation by providing a solution that is virtually transparent to the dispatcher. | 02-04-2016 |
20160043894 | AUTOMATIC RECONFIGURATION OF NETWORK PARAMETERS DURING FILE SYSTEM FAILOVER - According to one exemplary embodiment, a method for automatic network reconfiguration associated with a failover event is provided. The method may include instructing a file system to capture a plurality of attributes associated with a plurality of data following the failover event, whereby the plurality of attributes comprises a fileset identifier, a first gateway node identifier, and a second gateway node identifier. The method may include determining, based on the captured fileset identifier, a virtual local area network associated with the fileset, whereby the determined virtual area network includes at least one software defined network switch. The method may include reconfiguring the at least one software defined network switch to stop sending a plurality of network traffic to the first gateway node and to start sending the plurality of network traffic to the second gateway node, whereby the plurality of network traffic is associated with the fileset. | 02-11-2016 |
20160044736 | APPARATUS AND METHOD FOR FACILITATING FALLBACK ACCESS SCHEMES - Systems and methodologies are described that facilitate random access procedures using one or more fallback access schemes after initial access attempts have failed. UE equipped to determine failure of a first access request to a first base station due to interference from a second base station. Further, a UE equipped to determine the failure can do so and implement one or more fallback access schemes in response to the determination. In one example, a fallback access scheme allows the UE to select a secondary carrier frequency for communications with the first base station. In another example, a fallback access scheme allows the UE to designate the first base station as inaccessible and communicate with other base stations. | 02-11-2016 |
20160056996 | System and Method for Implementing High Availability of Server in Cloud Environment - This invention relates to a system and method for implementing high availability of the server/nodes in a cluster of a cloud network. An application with respect to a customer/client can be received at a high availability manager of a cluster in a cloud network to assign the application to a server/node within the cluster. A seed server/node from a plurality of server/nodes within the cluster can be identified with respect to the application based on the application information and correlation identify of the customer. The seed server/node can be assigned with a primary server/node status to hereby communicate the cluster information with respect to the seed server/node to the plurality of server/node located with the cluster. A secondary server/node with respect to the application can be identified and assigned a secondary server/node status to thereby route the traffic of the seed server/node upon detecting a failure/alert is generated to effectively implement the high availability of server/nodes within the cluster of the cloud network. | 02-25-2016 |
20160056997 | DISASTER RECOVERY WITH A CENTRAL CONFERENCING ROUTING SERVER - Aspects of the present disclosure involve systems, methods, computer program products, and the like, for collaboration conferencing with multiple participants over a communications network, and more specifically for a conferencing routing service for managing and routing collaboration participants. In one embodiment, the conferencing routing server is configured to respond to a failure in a conference bridge to allow for repair to the network and/or account for split conferences that may occur due to the bridge failure. In one embodiment, the CCRS may account for moving a conference bridge into an offline state by removing the conference bridge from consideration for hosting a collaboration conference. | 02-25-2016 |
20160057801 | METHOD AND NODES FOR HANDLING A FAILURE IN A COMMUNICATIONS NETWORK - The embodiments herein relate to a method in a second CN node ( | 02-25-2016 |
20160072708 | Systems And Methods For Routing Data - Methods and systems for routing data are disclosed. In one aspect, service management can be implemented on one or more computing devices located between at least one router and one or more nodes. The one or more computing devices can be a default gateway for a plurality of user devices. In another aspect, the disclosed methods and systems can use a tag in routing a data block (e.g., service data) via a predefined route. For example, a device can transmit a request for a tag to a network node for routing a data block via a predefined route. Upon receiving the request, the network node can allocate a tag and create an interface. The interface can be associated with the tag and communications between the network node and the device for routing the data block. | 03-10-2016 |
20160080197 | WIRELESS TERMINAL, IMPORTANCE GENERATING METHOD, AND WIRELESS COMMUNICATION SYSTEM - In a wireless terminal of a network system in which routes amongst a plurality of nodes are dynamically adjusted according to an environment, the wireless terminal forms a target node forming a final destination of data sent from a sending node. The wireless terminal computes a partitioning probability indicating whether transmission fails by partitioning a location with respect to each pair of a sending source node and a sending destination node, based on a partitioning point set included in a packet received from a relaying node within the network system, wherein the partitioning point set includes partitioning points where nodes partition routes within the network system, and generates an importance representing an effect of a failure of the relaying node on the network system by a transmission failure probability. | 03-17-2016 |
20160105306 | LINK AGGREGATION - A Software Defined Networking (SDN) controller selects ports from among ports on an SDN edge device as selected ports of an aggregation group according to an aggregation strategy. | 04-14-2016 |
20160134465 | Service Chain Management Method, Delivery Node, Controller, and Value-Added Service Node - A service chain management method, a delivery node, a controller, and a value-added service node are provided. An ingress delivery node of a service chain receives a detection packet for detecting the service chain, where the service chain includes at least one value-added service node, and the detection packet carries status information of each value-added service node; and the ingress delivery node determines whether the service chain is in a normal running state according to the detection packet. By using the present invention, management on a service chain can be implemented, thereby improving reliability of the service chain. | 05-12-2016 |
20160142956 | Method and Apparatus for Information Processing and Communication System - A method and apparatus for information processing and a communication system. The method includes: storing, when user equipment detects that a failure occurs, information related to the failure, and reserving the stored information related to the failure. In this way, when the network side obtains the information related to failure at each time occurrence of failure, the handover parameter may be configured according to the information, thereby reducing occurrence of failure. | 05-19-2016 |
20160149751 | RECOVERING FROM VIRTUAL PORT CHANNEL PEER FAILURE - Systems, methods, and non-transitory computer-readable storage media for recovering from a partial failure of a virtual port chain (vPC) domain. The first and second vPC peers may be paired to create a vPC having a virtual address. An endpoint host may communicate with a network via the virtual port channel. The system may detect that the first virtual port channel peer is down. During or after the first vPC reboots, the reachability cost for the first vPC with regards to the virtual address can be set to an inflated value. The first vPC peer may also delay its bring up time while it synchronizes its vPC state information with the second vPC peer. The second vPC can continue to advertise the association between the endpoint host and the virtual address. Upon completion of the synchronization, the first vPC peer may bring up the link and restore the reachability cost. | 05-26-2016 |
20160157111 | DATA COMMUNICATIONS NETWORK FOR AN AIRCRAFT | 06-02-2016 |
20160164716 | METHOD FOR OPERATING A DISTRIBUTED COMPUTING SYSTEM AND A DISTRIBUTED COMPUTING SYSTEM - A method for operating a distributed computing system including a plurality of nodes connected in a general network topological sequential manner includes storing a first message on a first node; removing the first message from the first node only if an N-level acknowledgement message is received by the first node indicating that a second message based on the data of the first message was successfully received by a second node on a second level, wherein the difference between the values for the first and second level is a predefined value N; and saving a node state of at least the second node or a third node on a level higher than the first level before sending out an acknowledgement message to a node on a level below if an outgoing message towards the second node is generated based on the node state. | 06-09-2016 |
20160164720 | SYSTEM AND METHOD USING RSVP HELLO SUPPRESSION FOR GRACEFUL RESTART CAPABLE NEIGHBORS - A system, method and apparatus adapting one or more routers or nodes in a network to operate in a first mode to exchange hello messages with neighboring nodes to indicate thereby active or live status, and to operate in a second mode to avoid the use of hello messages by opportunistically relying upon service or management protocols to convey active or live status. | 06-09-2016 |
20160173323 | FAULT TOLERANT FOLDED CLOS NETWORKS | 06-16-2016 |
20160192215 | WIRELESS COMMUNICAITON SYSTEM AND METHOD FOR AUTOMATIALLY SWITCHING DEVICE IDENTIFICATIONS - A wireless communication system and methods for automatically switching device identifications are disclosed, where the device identifications are automatically determined by a plurality of work devices connected to a cable network after a connection time, respectively, and the one among the plurality of work devices becomes a main device may transmit a survive message to the work devices becoming a backup device, and the main device is determined as failing to work normally and a new main device is automatically determined again when the backup device fails to receive the survive message transmitted by the main device or a switch notification transmitted by the main device, so that the wireless communication on a carrier may have an improved stability and the technical efficacy may be achieved that the work device may automatically and rapidly determine the main device when no main device existing in the wireless network environment. | 06-30-2016 |
20160204977 | METHOD AND SYSTEM FOR PROVIDING DISTRIBUTED MANAGEMENT IN A NETWORKED VIRTUALIZATION ENVIRONMENT | 07-14-2016 |
20160254945 | SYSTEM, COMMUNICATIONS NODE, AND SWITCHING METHOD | 09-01-2016 |
20160380805 | MOBILE COMMUNICATION METHOD, MOBILE STATION, AND RADIO BASE STATION - A reconnection procedure is successfully performed even when a connection destination radio base station does not manage “UE Context” for a mobile station UE. A mobile communication method according to the present invention includes a step B in which the mobile station UE transmits CGI of cell # | 12-29-2016 |
20170237798 | System, Apparatus for Content Delivery for Internet Traffic and Methods Thereof | 08-17-2017 |
20180027430 | TECHNIQUES FOR LOCATING DISTRIBUTED ANTENNA LOCATIONS | 01-25-2018 |