Patents Issued in March 4, 2014
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Patent number: 8665697Abstract: Sub-channels in cells of an Orthogonal Frequency Division Multiple Access (OFDMA) network are formed based on random permutations of a set of subcarrier indices. The random permutations are performed for each cell of the network using a pseudo-random number generator (PRNG) and a shuffle technique. Different initial states of the PRNG are used to generate the random permutation of the subcarrier indices for each cell. In an embodiment, sub-carriers represented by a contiguous group of indices in the random permutation obtained for a cell are assigned to form a sub-channel. Interference diversity for the OFDMA network is thereby improved.Type: GrantFiled: December 23, 2009Date of Patent: March 4, 2014Assignees: KBC Research Foundation Pvt. Ltd., Anna UniversityInventors: Sarad Ammanath Venugopalan, Srikanth Subramanian
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Patent number: 8665698Abstract: Disclosed herein are systems, methods, and computer readable media for modifying IP backbone link weights such that multicast traffic and unicast traffic will not travel on a same path between nodes. The method comprises assigning link weights to nodes within an IP backbone such that multicast forwarding paths and unicast forwarding paths are failure disjoint, and delivering undelivered multicast packets using IP unicast encapsulation to the loopback address of next hop router on a multicast tree upon link/interface failure.Type: GrantFiled: October 22, 2010Date of Patent: March 4, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: Guangzhi Li, Dongmei Wang
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Patent number: 8665699Abstract: Failure detection and traffic redirection are implemented in an OpenFlow switch. Link failure detection packets, such as Bidirectional Forwarding Detection (BFD) packets, are periodically sent out on links to peer OpenFlow switches, such as via the Multi-protocol Label Switching (MPLS) Transport Profile (MPLS-TP). Link failure detection packets are received from the peer OpenFlow switches on the links, and monitored. A link failure is detected if no incoming link failure detection packets are received on a link for a predetermined interval. In the event of a link failure, traffic is redirected from the failed link to a backup link by altering entries on a flow table of the OpenFlow switch.Type: GrantFiled: May 19, 2011Date of Patent: March 4, 2014Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Elisa Bellagamba, James Kempf, Pontus Skoldstrom
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Patent number: 8665700Abstract: A method of detecting and mitigating an unintended active state of an in-vehicle communication network. The in-vehicle communication network includes a plurality of electronic control units (ECUs) communicating over a controller area network bus system. Each ECU includes both transmitting and receiving capabilities, and is configured with a communication protocol that provides guidelines for exchanging messages with other ECUs within the communication system. Each ECU enters a communication kernel active state for communicating on the bus. Virtual networks within the communication system are identified. Each virtual network includes a collection of signals involving respective ECUs whose transmission and reception are started and stopped collectively as a unit. Each respective virtual network that is active by fault is detected. Each faulty active virtual network is deactivated.Type: GrantFiled: February 6, 2012Date of Patent: March 4, 2014Assignee: GM Global Technology Operations LLCInventors: Shengbing Jiang, Katrina M. Schultz, Kenneth P Orlando
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Patent number: 8665701Abstract: A double ring network system configured with two or more transmission stations each including a pair of bi-directionally communicative communication ports, including any adjacent two transmission stations as terminal stations, and any transmission station as a base, as mutually connected in a ring form by communication ports through a transmission line, for intercommunications between transmission stations, in which the transmission stations are each adapted to determine whether or not frame signals are received from adjacent transmission stations, transmit route identifying frame signals for identification of routes to adjacent transmission stations, when having failed in reception, and set own station as a terminal station substituting for a current terminal station, when having received no responses to the route identifying frames from adjacent transmission stations, so they are kept from arriving at ring-like connected subsequent transmission stations.Type: GrantFiled: May 30, 2012Date of Patent: March 4, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Shinya Kono, Yasuhisa Shiobara
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Patent number: 8665702Abstract: The present invention discloses a method for refreshing a single ring address of an Ethernet ring, which method comprises: achieving address refresh on an on-ring port at one side of a same node by the control of a refresh timer. The present invention further discloses a system for refreshing a single ring address of an Ethernet ring, which system comprises: an address refresh achieving unit configured to achieve address refresh on an on-ring port at one side of a same node by the control of a refresh timer. The method and system of the present invention reduces the number of refreshes of the address forwarding table and improves the efficiency and stability of Ethernet ring protection, thus greatly promoting the performance of the Ethernet ring.Type: GrantFiled: October 14, 2009Date of Patent: March 4, 2014Assignee: ZTE CorporationInventors: Bin Wang, Shaoyong Wu
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Patent number: 8665703Abstract: A communication control apparatus includes a storage unit and a processor. The storage unit stores, in association with a port number, first address information regarding apparatuses connected to a port identified by the port number. The processor receives a first affected address list containing second address information regarding apparatuses which may be affected by a trouble, extracts the first address information stored in the storage unit in association with a port number of a port via which the first affected address list has been received, selects third address information which is included in both the first and second address information, updates the first affected address list by replacing the second address information with the third address information to acquire a second affected address list, and transmits the second affected address list via each port other than the port via which the first affected address list has been received.Type: GrantFiled: November 22, 2011Date of Patent: March 4, 2014Assignee: Fujitsu LimitedInventor: Keiji Miyazaki
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Patent number: 8665704Abstract: A network switching device includes at least two stacking ports, each stacking port being connectable via a stacking cable to a stack including at least one external network switching device. The device further includes an internal communication medium coupled to the stacking ports and capable of transmitting a frequency division multiplexed signal between the stacking ports. The device further includes a network switch and an interface to enable communication between the network switch and the internal communication medium. The interface includes a parallel coupling to the internal communication medium such that a signal with one carrier frequency being communicated between the network switch and the internal communication medium does not interfere with transmission between the two stacking ports of a signal with a different carrier frequency.Type: GrantFiled: November 25, 2011Date of Patent: March 4, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Keng Hua Chuang, Kum Cheong Adam Chan, Kian Teck Poh
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Patent number: 8665705Abstract: An example method of rerouting data involves rerouting a logical circuit from a first set of switches to a second set of switches to communicate data between network devices without breaking the logical circuit. The logical circuit comprises variable communication paths. The second set of switches is to form a route associated with the variable communication paths that is not predefined and that is dynamically defined at a time of automatic rerouting. The example method also involves rerouting the data from the logical circuit to a logical failover circuit in the data network when the logical circuit fails based on a committed information rate having been exceeded. The logical failover circuit comprises an alternative communication path to communicate the data.Type: GrantFiled: August 8, 2013Date of Patent: March 4, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: William Taylor, David Massengill, John Hollingsworth
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Patent number: 8665706Abstract: 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.Type: GrantFiled: September 27, 2011Date of Patent: March 4, 2014Assignee: Verizon Patent and Licensing Inc.Inventor: Thomas H. Tan
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Patent number: 8665707Abstract: 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.Type: GrantFiled: November 30, 2011Date of Patent: March 4, 2014Assignee: Verizon Patent and Licensing Inc.Inventor: Sagiv Draznin
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Patent number: 8665708Abstract: The present invention provides a method and an apparatus for acquiring protocol messages by a ring-network node, including: using dual fields to identify different protocol messages; if a node supporting G.8032v1 receives a Force Switch (FS) or Manual Switch (MS) protocol message, determining that message is a Signal Fail (SF) protocol message according to an identifier; a node supporting G.8032v2 determining that the received protocol message is an SF or MS or FS protocol message according to the identifier. The method of the present invention enables the nodes in a ring network to accurately control the state of their own ports, thereby avoiding the case that multiple blocking points appear in the ring network and improving the network performance.Type: GrantFiled: January 27, 2010Date of Patent: March 4, 2014Assignee: ZTE CorporationInventors: Bin Wang, Shaoyong Wu
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Patent number: 8665709Abstract: A system is provided for sharing a protection path between at least two protection groups in a network. The system includes at least one working path associated with each of the protection groups, and at least one working maintenance entity group (“WMEG”) monitoring the status of each of the working paths. Each WMEG notifies the protection group associated with the monitored working path of changes in the status of the monitored working path. At least one protection entity group (“PMEG”) monitors the status of the protection path and notifies each of the protection groups of changes in the status of the protection path. Each of the protection groups is switchable to the protection path in response to the receipt of notifications from the WMEG of changes to a non-operational status for the respective working paths associated with each of the protection groups.Type: GrantFiled: June 9, 2009Date of Patent: March 4, 2014Assignee: Ciena CorporationInventor: Kenneth W. Young
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Patent number: 8665710Abstract: A protocol circuit layer is described. The protocol circuit layer may employ a routing layer to determine optimal routes when establishing a circuit. The circuit layer may employ a link layer to send data packets over links to other network nodes. A naming layer may employ circuits to establish a distributed database of associations between network node addresses and their network locations.Type: GrantFiled: June 25, 2012Date of Patent: March 4, 2014Assignee: CoCo Communications Corp.Inventors: Riley Eller, Frank Laub, Jeremy Bruestle, Mark L Tucker
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Patent number: 8665711Abstract: A first network device creates a protection path to a second network device associated with a first service site, and creates a pseudowire between the first service site and a second service site via the first network device and the second network device. The first network device also detects a failure between the first network device and the first service site, and forwards traffic, provided by the pseudowire between the first service site and the second service site, via the protection path. The second network device uses the traffic on the protection path as a trigger to activate a link between the second network device and the first service site.Type: GrantFiled: July 31, 2012Date of Patent: March 4, 2014Assignee: Juniper Networks, Inc.Inventors: Bhupesh Kothari, Nischal Sheth
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Patent number: 8665712Abstract: Apparatus and method for delayed network information transfer are disclosed. A user requests a file via a file requesting device, over a network, from a server. That request is accompanied by an expected delivery time of the file to the user. A schedule is generated by the server for transfer of the file according to a scheduled time, which scheduled time is determined in part at least by the expected delivery time. At the scheduled time, the file is then transmitted by the server to a file receiving device.Type: GrantFiled: December 6, 2002Date of Patent: March 4, 2014Assignee: Thomson LicensingInventors: Kumar Ramaswamy, Jun Li
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Patent number: 8665713Abstract: In a radio communication system in which a radio terminal 10 transmits, to a base station 100, uplink user data via an enhanced dedicated physical data channel, the base station 100 includes a base station side transmitter unit (scheduling unit 120a) configured to transmit, to the radio terminal 10, transmission rate decrease data for instructing a decrease of the transmission rate assigned to the radio terminal 10, when the uplink user data is not transmitted from the radio terminal 10 to the base station 100 by using the transmission rate assigned to the radio terminal 10.Type: GrantFiled: October 2, 2008Date of Patent: March 4, 2014Assignee: NTT DoCoMo, Inc.Inventors: Junichiro Kawamoto, Akihito Hanaki, Takahiro Hayashi, Yoshikazu Goto, Yukiko Takagi
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Patent number: 8665714Abstract: A method and an apparatus are disclosed that enable call admission control for telecommunications terminals that use shared-access resources, without relying on an implementation at every access point to provide those resources. In particular, in accordance with the illustrative embodiment of the present invention, a first wireless terminal calls a second terminal by transmitting a traffic stream description that specifies the nature of the call to an intermediary call-handling server, such as a Session Initiation Protocol (SIP) proxy server. The SIP proxy determines from the Internet Protocol address of the calling terminal that the terminal uses a shared-access resource—in this case, a wireless shared-communications channel—and makes a request to a channel utilization manager to admit the call. Subsequently, the SIP proxy receives a message from the channel utilization manager that indicates whether the call has been admitted.Type: GrantFiled: December 23, 2005Date of Patent: March 4, 2014Assignee: Avaya Inc.Inventor: Mathilde Benveniste
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Patent number: 8665715Abstract: Network management for providing and managing Quality of Service (QoS) in converged networks, and particularly management of bursty, short-lived data loads, in an opaque network where knowledge of or control over network elements is not required. Preferential treatment is provided to some subset of the network users that require better QoS assurances from the underlying network by applying probabilistic admission control decisions in conjunction with estimated network state provides improved performance for high priority data with bursty data loads.Type: GrantFiled: May 20, 2011Date of Patent: March 4, 2014Assignee: Telcordia Technologies, Inc.Inventors: Abhrajit Ghosh, Alexander Poylisher, Ricardo Martija, Ritu Chadha, Latha Kant
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Patent number: 8665716Abstract: A method is provided that includes causing transmission of a first mobility management (MM) message from a UE to a core network including packet-switched (PS) and circuit-switched (CS) domains. The method may include causing transmission of the first MM message to a PS-domain component, and receiving a rejection message from the PS-domain component in response thereto. The rejection message indicates congestion as a cause for rejection of the first MM message. In response to receipt of the rejection message, the method may include running a back-off timer. While the back-off timer is running in an instance in which the rejection message indicates that circuit-switched services are permitted, the method may include causing transmission of a second MM message from the UE to a CS-domain component. A corresponding apparatus and computer-readable storage medium are also provided.Type: GrantFiled: January 10, 2012Date of Patent: March 4, 2014Assignee: Broadcom CorporationInventors: Marko Tapani Niemi, Ilkka Mikael Heikkinen
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Patent number: 8665717Abstract: A base station for an Internet protocol (IP) wireless access network receives an initial attach request from a user device. Based on the initial attach request, a policy and charging rules function (PCRF) device provides to the base station, a subscriber bearer policy that includes a particular quality-of-service control indicator (QCI) value, an uplink data rate limit, and a downlink data rate limit. The base station calculates an uplink bandwidth allocation, based on the QCI value and the uplink data rate limit, that is proportionate to the total maximum data rate of all uplink traffic with the same QCI value. The base station also calculates a downlink bandwidth allocation, based on the QCI value and the downlink data rate limit, that is proportionate to the total maximum data rate of all downlink traffic with the same QCI value.Type: GrantFiled: February 18, 2011Date of Patent: March 4, 2014Assignee: Verizon Patent and Licensing Inc.Inventors: Lalit R. Kotecha, William H. Stone, Lee K. Tjio
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Patent number: 8665718Abstract: The present invention provides a method and a device for implementing a V-Switch. Through setting up a V-Switch correlation with respect to at least two VLAN tags, a DRE performs a V-Switch transmission on an Ethernet frame received according to the V-Switch correlation with respect to at least two VLAN tags. The invention can expand the number of V-Switch connections carried on a local link to 4096×4096, or even to 4096×4096×4096 . . . . Therefore, the problem of insufficient VLAN tag resources is solved, and the requirements for the scale of V-Switch technology is met. Moreover, a more effective V-Switch method is provided, the switching capability of V-Switch is improved, and the application scale of V-Switch technology is enlarged.Type: GrantFiled: August 23, 2011Date of Patent: March 4, 2014Assignee: Huawei Technologies Co., LtdInventors: Lingyuan Fan, Yuepeng Chen, Dengchao Wu
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Patent number: 8665719Abstract: The present invention provides switches and routers, preferably with fully-connected mesh fabrics, that transmit data through the switch fabric in variable-size data units. Variable-size data units allow switches and routers to provide throughputs close to hardware capabilities, eliminating the need for over-capacity hardware in the switch fabric and other components. Along with variably-size data units, preferred embodiments of this invention include scheduling methods that provide fair allocation of pre-determined bandwidths to different protocols, to different classes of service within protocols, and to different resources within the switch by use of certain weighted, fair scheduling methods. The switches and routers of this invention are particularly directed to multi-protocol, high-throughput communication applications, but may have wide applicability in systems generally where data packets are switched or routed.Type: GrantFiled: May 3, 2004Date of Patent: March 4, 2014Assignee: Alcatel LucentInventors: Nabil N. Bitar, Philip To, Thomas A. Hoch
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Patent number: 8665720Abstract: Aspects of a method and system for determining a limited soft buffer size on transport blocks for rate matching are provided. A data stream may be processed for transmission between a base station (eNodeB) and a UE via HARQ procedures. A two-stage rate-matching algorithm may be used in the HARQ procedures. A limited virtual soft buffer size at the UE in the two-stage rate-matching algorithm may be calculated on site based on channel condition information, available channel bandwidth, number of layers in spatial multiplexing, and the capacity of the UE, respectively. The data stream may be first rate-matched to the calculated limited soft buffer size available at the UE, and forwarded for second stage rate-matching to an actual physical channel size determined by the base station. The amount of bits forwarded for second stage rate-matching may equal to the calculated limited virtual soft buffer size of the virtual soft buffer.Type: GrantFiled: October 1, 2008Date of Patent: March 4, 2014Assignee: Broadcom CorporationInventors: Bazhong Shen, Mark Kent
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Patent number: 8665721Abstract: Systems, methods, and computer readable media for maintaining packet data protocol (PDP) context while performing data offload are disclosed. According to one aspect, a method for maintaining PDP context while performing data offload includes detecting a data offload condition wherein a UE for which a first network node is maintaining a PDP context is sending or receiving data using a data path that does not include the first network node. While the data offload condition exists, packets are sent from a source other than the UE to the first network node so as to cause the first network node to maintain the PDP context for the UE. In one embodiment, a node interposed between the UE and the first network node periodically sends dummy packets or heart beat packets to the first network node on behalf of the UE, which may include packets that appear to come from the UE.Type: GrantFiled: February 22, 2011Date of Patent: March 4, 2014Assignee: Genband US LLCInventors: Gibson Soon Teck Ang, Thomas Gschwendtner, Jie Wang
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Patent number: 8665722Abstract: Methods to achieve bounded router buffer sizes and Quality of Service guarantees for traffic flows in a packet-switched network are described. The network can be an Internet Protocol (IP) network, a Differentiated Services network, an MPLS network, wireless mesh network or an optical network. The routers can use input queueing, possibly in combination with crosspoint queueing and/or output queueing. Routers may schedule QoS-enabled traffic flows to ensure a bounded normalized service lead/lag. Each QoS-enabled traffic flow will buffer O(K) packets per router, where K is an integer bound on the normalized service lead/lag. Three flow-scheduling methods are analysed. Non-work-conserving flow-scheduling methods can guarantee a bound on the normalized service lead/lag, while work-conserving flow-scheduling methods typically cannot guarantee the same small bound.Type: GrantFiled: March 29, 2011Date of Patent: March 4, 2014Inventor: Ted Szymanski
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Patent number: 8665723Abstract: Mechanisms are provided to improve efficiency of systems operating on internet protocol (IP) over Infiniband (IB) networks. One mechanism includes multicasting a first ARP request from a source node, the first ARP request including an IP address of a source port of the source node, and performing load-balancing of host traffic across a plurality of ports of a plurality of nodes by sending a reply from a destination node corresponding to the IP address included in the first ARP request, the reply being sent over the source port to the source node.Type: GrantFiled: August 30, 2011Date of Patent: March 4, 2014Assignee: International Business Machines CorporationInventors: Constantine Gavrilov, Zorik Machulsky, Leah Shalev
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Patent number: 8665724Abstract: Systems and methods provide a parameterized scheduling system that incorporates end-user application awareness and can be used with scheduling groups that contain data streams from heterogeneous applications. Individual data queues within a scheduling group can be created based on application class, specific application, individual data streams or some combination thereof. Application information and Application Factors (AF) are used to modify scheduler parameters such as weights and credits to differentiate between data streams assigned to a scheduling group. Dynamic AF settings may adjust relative importance of user applications to maximize user Quality of Experience (QoE) in response to recurring network patterns, one-time events, application characteristics, protocol characteristics, device characteristics, service level agreements, or combinations thereof.Type: GrantFiled: February 14, 2012Date of Patent: March 4, 2014Assignee: Cygnus Broadband, Inc.Inventors: Kenneth L. Stanwood, David Gell, Yiliang Bao
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Patent number: 8665725Abstract: A system and method for hierarchical adaptive dynamic egress port and queue buffer management. Efficient utilization of buffering resources in a commodity shared memory buffer switch is key to minimizing packet loss. Efficient utilization of buffering resources is enabled through adaptive queue limits that are derived from an adaptive port limit.Type: GrantFiled: June 15, 2012Date of Patent: March 4, 2014Assignee: Broadcom CorporationInventors: Bruce Kwan, Puneet Agarwal
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Patent number: 8665726Abstract: Methods and apparatus for dynamically configuring a parent circuit through a subscriber record on an authentication, authorization, and accounting (AAA) server responsive to an authorization event for the subscriber session on the network element. According to one embodiment of the invention, the AAA server accesses the subscriber record for a subscriber session on the network element. Based on this subscriber record, a set of one or more attributes for a subscriber circuit and a set of one or more attributes for a parent circuit of the subscriber circuit are determined. The network element applies the set of subscriber circuit attributes to the subscriber circuit and the set of parent circuit attributes to the parent circuit.Type: GrantFiled: August 2, 2012Date of Patent: March 4, 2014Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Sudhagar Chinnaswamy, Timothy J. Lynch, Lars A. Martin, Sudhakar Chunduru, Samvid S. Shah, Sunny Y. Wang, Srikanth Chavali
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Patent number: 8665727Abstract: A computer-implemented method is described for determining cost in a non-blocking routing network that provides routing functionality using a single level of a plurality of multiplexers in each row of the routing network. The method includes assigning a respective numerical value, represented by bits, to each row of the routing network. A number of bits that differ between the respective numerical values of each pair of rows of the routing network indicates a number of row traversals necessary to traverse from a first row of the pair to a second row of the pair. A signal routing cost is computed from the number of bits that differ between the respective numerical values of the first row and the second row of the routing network. The calculated signal routing cost is provided to a placement module.Type: GrantFiled: June 21, 2010Date of Patent: March 4, 2014Assignee: Xilinx, Inc.Inventor: Stephen M. Trimberger
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Patent number: 8665728Abstract: Methods and systems for identifying network users who communicate with the network (e.g., the Internet) via a given network connection. The disclosed techniques analyze traffic that flows in the network to determine, for example, whether the given network connection serves a single individual or multiple individuals, a single computer or multiple computers. A Profiling System (PS) acquires copies of data traffic that flow through network connections that connect computers to the WAN. The PS analyzes the acquired data, attempting to identify individuals who login to servers.Type: GrantFiled: October 27, 2011Date of Patent: March 4, 2014Assignee: Verint Systems, Ltd.Inventor: Yuval Altman
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Patent number: 8665729Abstract: A method for performing radio link control (RLC) with round trip time (RTT) awareness is provided, where the method is applied to an electronic device. The method includes: dynamically estimating an index according to one or more factors; and based upon the index, dynamically adjusting a status prohibit timer value of a status prohibit timer for performing RLC. For example, the index can be an RTT of transmission/retransmission, and the step of dynamically estimating the index may further include: dynamically estimating the RTT of transmission/retransmission by detecting a time period between a first time point and a second time point, wherein the first time point represents time of sending a negative acknowledgement (NACK) status report. In another example, the index can be an RTT awareness index, where the method may include estimating the RTT awareness index according to at least one predetermined estimation function. An associated apparatus is also provided.Type: GrantFiled: February 20, 2012Date of Patent: March 4, 2014Assignee: Mediatek Inc.Inventors: Yi-Ting Cheng, Peng-An Chen
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Patent number: 8665730Abstract: To reduce the load of a communication process performed between pseudo base stations of different communication standards. An LTE pseudo base station unit 3 includes: an LTE message processing unit 3b that transmits broadcast information including base station information about a C2K pseudo base station unit 4 to a mobile communication terminal 10, which is a test target, extracts location registration request message information from data when receiving the data including the location registration request message information as response message information to the transmitted broadcast information, and outputs the location registration request message information; and a specific C2K message processing unit 3c that outputs the location registration request message information as response message information when receiving the location registration request message information from the LTE message processing unit 3b.Type: GrantFiled: June 6, 2012Date of Patent: March 4, 2014Assignee: Anritsu CorporationInventors: Masanori Ozaki, Takeshi Yoshida, Fumitaka Nonaka
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Patent number: 8665731Abstract: A computer-based method for determining a probability that no path exists from a starting node to a target node within a network of nodes and directional links between pairs of nodes. The nodes and directional links form paths of a reliability graph and the method is performed using a computer coupled to a database. The method includes selecting a set of paths between the starting node and the target node that have been determined to be reliable, calculating a reliability of the union of the selected path sets, setting an upper bound for unreliability of the set of all paths, selecting a set of minimal cutsets from all cutsets that lie between the starting node and the target node, calculating the probability of the union of the minimal cutsets, and setting a lower bound for the unreliability of the set of all cutsets.Type: GrantFiled: February 20, 2012Date of Patent: March 4, 2014Assignee: The Boeing CompanyInventors: Anapathur V. Ramesh, Kishor S. Trivedi, Tilak C. Sharma, Dazhi Wang, David William Twigg, Le P. Nguyen, Yun Liu
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Patent number: 8665732Abstract: A VoIP-aware device generates data structures that include diagnostics data. The diagnostics data of each data structure identifies at least one of sender and network problems that degrade VoIP voice quality.Type: GrantFiled: July 25, 2007Date of Patent: March 4, 2014Assignee: VoIPFuture, GmbHInventor: Olaf Carl Zaencker
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Patent number: 8665733Abstract: A method and apparatus for Round Trip Delay KPI Monitoring in a live network using a user plane probe session is disclosed for measuring round trip delays in a manner that allows latency to be apportioned to network elements. The method and apparatus for Round Trip Delay KPI Monitoring in a live network using a user plane probe session includes transmitting a loopback packet containing a probe session indicator and capturing timestamps of arrival and departure times at each network element traversed by the loopback packet, and then transmitting the timestamps to a Network Management System.Type: GrantFiled: September 30, 2011Date of Patent: March 4, 2014Assignee: Alcatel LucentInventors: Suat R. Eskicioglu, Nausheen Naz
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Patent number: 8665734Abstract: A method and apparatus for providing uplink macro-diversity in packet-switched networks that allows packets and/or portions of packets, e.g., frames, to be selectively sent from an end node, e.g., wireless communication device or mobile terminal, over a set of multiple communication connections, e.g., physical-layer or link-layer connections, to one or more access nodes, e.g., base stations. Uplink macro-diversity is achieved in part through intelligent selective forwarding over multiple communication connections, where the forwarding decision is controlled by the end node based on a variety of factors, e.g., physical-layer channel conditions and/or higher layer policy. The forwarding decision is executed on a rapid timescale, e.g., on a per packet basis, to adapt to the dynamically varying conditions of the set of communication connections.Type: GrantFiled: May 5, 2003Date of Patent: March 4, 2014Assignee: QUALCOMM IncorporatedInventors: M. Scott Corson, Samir Kapoor, Rajiv Laroia, Vincent Park
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Patent number: 8665735Abstract: Aspects of a method and system for quality of service management in a multi-standard mesh of networks are provided. In a wireless mobile communication device (WMCD) enabled to communicate utilizing a variety of communication networks, QoS information, such as latency, available bandwidth, and/or throughput, communicated to the WMCD may enable the coordination of data transfers to and/or from the WMCD. In this regard, the WMCD and each of the networks may comprise a QoS management entity. A QoS management entity may be enabled to poll other QoS management entities to discover QoS information. Similarly, a QoS management entity may be enabled to receive QoS information broadcast by other QoS management entities. A QoS management entity may enable selecting a network and/or communication protocol for the transmission and/or reception of data based on exchanged QoS information.Type: GrantFiled: January 9, 2008Date of Patent: March 4, 2014Assignee: Broadcom CorporationInventors: John Walley, Arya Behzad, Mark Buer, Jeyhan Karaoguz, Alexander G. MacInnis, Thomas Quigley
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Patent number: 8665736Abstract: A device in a wireless network receives signals and determines media access control (MAC) slot boundaries of the received signals. The MAC slot boundaries are averaged in time, and a local slot boundary is modified in response thereto. The local MAC slot boundary is modified by less than ten percent of a short interframe space until the local MAC slot boundary is within one orthogonal frequency division multiplexing (OFDM) cyclic prefix duration of the averaged MAC slot boundaries.Type: GrantFiled: February 27, 2009Date of Patent: March 4, 2014Assignee: Intel CorporationInventors: Qinghua Li, Xintian E. Lin, Qiang Li, Jing Zhu, Xingang Guo, Alexey Khoryaev
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Patent number: 8665737Abstract: An apparatus (300) and method (400) provides an adaptive end-to-end (E2E) delay threshold (DT) for one-way transmission of information blocks in an information stream of a conversation. Information streams of the conversation are monitored (410), and the E2E DT duration is determined based on detected occurrences of one or more interactive properties 5 associated with the information streams of the conversation (412). Using the adaptive E2E DT duration value, a determination is made as to whether to perform at least one Quality of Service (QoS) function (416).Type: GrantFiled: April 17, 2008Date of Patent: March 4, 2014Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Valentin Kulyk, Mats Folkesson
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Patent number: 8665738Abstract: A transmission apparatus stores frame data of a first frame in a second frame having a bit rate different from that of the first frame through regulation of the amount of stuffs to be stored in the second frame. The transmission apparatus includes: a storage unit storing the first-frame frame data; a first control unit controlling a timing of writing the first-frame frame data in the storage unit based on first stuff information indicating the amount of stuffs contained in the first frame; an arithmetic and logic unit obtaining second stuff information indicating the amount of stuffs to be contained in the second frame based on a bit rate ratio between the first frame and the second frame; and a second control unit controlling a timing of reading out the first-frame frame data stored in the storage unit based on the second stuff information.Type: GrantFiled: March 14, 2011Date of Patent: March 4, 2014Assignee: Fujitsu LimitedInventors: Toru Katagiri, Hiroyuki Honma
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Patent number: 8665739Abstract: In general, techniques are described for measuring packet data unit (PDU) loss in a L2 virtual private network (L2VPN) service, such as a VPLS instance. In one example of the techniques, provider edge (PE) routers that participate in the L2VPN measure known unicast and multicast PDU traffic at the service endpoints for the instance to determine unicast PDU loss within the service provider network. As the routers learn the outbound service (i.e., core-facing) interfaces and outbound local (i.e., customer-facing) interfaces for L2 addresses of customer devices that issue packets to the VPLS instance, the routers establish respective unicast transmit and receipt counters for the service endpoints that serve the customer devices. In another example, PE routers that participate in the L2VPN measure multicast PDU traffic at the service endpoints for the instance and account for internal replication by intermediate service nodes to determine multicast PDU loss within the service.Type: GrantFiled: March 16, 2011Date of Patent: March 4, 2014Assignee: Juniper Networks, Inc.Inventors: Prabakaran Thirumali Sampath, Sri Goli
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Patent number: 8665740Abstract: A method is provided for controlling point-to-multipoint communications. Channel condition information for multiple receivers of a point-to-multipoint group is received. Signal-to-noise ratio distortion is estimated for a point-to-multipoint group on the basis of the received channel condition information and available encoding bit rates. A bit rate allocation providing an optimal overall signal-to-noise ratio for transmission to the point-to-multipoint group is selected. Encoding of content to the point-to-multipoint group is controlled in accordance with the selected bit rate allocation.Type: GrantFiled: July 28, 2009Date of Patent: March 4, 2014Assignee: Nokia Siemens Networks OyInventor: Feng Jiang
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Patent number: 8665741Abstract: Apparatus, methods, and computer program products are disclosed for: selecting a reception path to receive information from a first receiver path through a first receiver portion in a transceiver portion of the apparatus or from a second receiver path in a receiver portion separate from the transceiver portion of the apparatus, wherein both of the first and second receiver paths receive the information using a same frequency band of a same radio access technology; and receiving the information using the selected reception path. Apparatus, methods, and computer program products are disclosed for: transmitting first information using a transmission frequency band of a radio access technology over a transmission path in a transceiver; and, for the radio access technology and a reception frequency band, receiving second information over a receiver path in a secondary receiver, where the transceiver does not have a receiver path configured to receive the reception frequency band.Type: GrantFiled: March 17, 2011Date of Patent: March 4, 2014Assignee: Nokia CorporationInventor: Hannu T. Laurila
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Patent number: 8665742Abstract: A method for improving the performance for a streaming service by link-adaptation and power-control in a wireless packet network such as an Enhanced General Packet Radio Services (EGPRS) cellular network is described. In particular, the effects of a combined link adaptation and power control scheme (referred to as an error-based scheme) for achieving a target error rate, which is non-zero but low enough so that limited retransmission and error concealment techniques are effective, is presented.Type: GrantFiled: September 15, 2011Date of Patent: March 4, 2014Assignee: Chanyu Holdings, LLCInventors: Kin K. Leung, Kapil K. Chawla, Peter F. Driessen, Xiaoxin Qiu
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Patent number: 8665743Abstract: A statistical transition map is built based on mobile wireless device user mobility history data. This data is useful to assist various wireless local area network applications. Received signal strength and location trace information associated with movements of mobile wireless devices in a wireless network is collected. The received signal strength and location trace information is converted to a sequence of natural language pseudo-location word labels representing pseudo-locations of each mobile wireless device as each mobile wireless device moves about with respect to a plurality of wireless access point devices in the wireless network. A statistical transition map is generated for each mobile wireless device from the sequence of natural language pseudo-location word labels using a natural language model. A probability of a next pseudo-location for a particular mobile wireless device is computed based on its current location and its statistical transition map.Type: GrantFiled: October 28, 2011Date of Patent: March 4, 2014Assignee: Cisco Technology, Inc.Inventors: Jiang Zhu, Hui Liu, Flavio Bonomi
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Patent number: 8665744Abstract: A WiFi-enabled embedded device boots as a first access point. The WiFi-enabled embedded device communicates with a first wireless station to receive configuration parameters while continuing to operate as an access point. The WiFi-enabled embedded device then applies the configuration parameters internally to cause the WiFi-enabled embedded device to operate as a second wireless station. In an embodiment, the first wireless station discovers a configuration service advertized by the WiFi-enabled embedded device using mDN/DNS-SD, and automatically provides the configuration parameters to the WiFi-enabled embedded device. Convenient provisioning of the WiFi-enabled embedded device is thus made possible.Type: GrantFiled: May 18, 2012Date of Patent: March 4, 2014Assignee: Gainspan CorporationInventors: Prashant Viswanathan, Greg Winner, Pankaj Vyas
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Patent number: 8665745Abstract: It is disclosed a method for determining a buffer level of a jitter data buffer (203) comprised in a receiver (200) adapted to sequentially receive data packets from a communications network (202), wherein frames are encoded into the data packets. Each frame may comprise timestamp information and payload size information. The buffer level is determined on the basis of a first part of frame arrival delay related to payload size variation between frames and a second part related to the amount of crosstraffic in the communications network (202). It is further disclosed a receiver (200) adapted to sequentially receive data packets from a communications network (202), wherein frames are encoded into the data packets, the receiver (200) comprising a data jitter buffer (203) and being adapted to perform the method.Type: GrantFiled: September 20, 2010Date of Patent: March 4, 2014Assignee: Google Inc.Inventors: Henrik Fahlberg Lundin, Stefan Holmer
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Patent number: 8665746Abstract: An apparatus comprising a first node configured to couple to a second node, wherein the first node is further configured to exchange a plurality of timestamps recording transmission times and at least one of a plurality of octet counts and a plurality of frame counts with the second node to perform throughput measurements, and wherein the at least one of the plurality of octet counts and the plurality of frame counts correspond to a packet flow between the first node and the second node and are used to calculate throughput for the packet flow based on a time interval of the exchanged at least one of the plurality of octet counts and the plurality of frame counts that is determined using the timestamps.Type: GrantFiled: March 29, 2011Date of Patent: March 4, 2014Assignee: Futurewei Technologies, Inc.Inventors: T. Benjamin Mack-Crane, Linda Dunbar