Of A Switching System Patents (Class 370/250)
  • Patent number: 8867385
    Abstract: A router, switch, or other network node generates reports that contain packet level statistics and other information for a monitored media stream. The media stream reports reduce the amount of bandwidth typically required for sending monitored media stream information back to a central analysis device. However the computation of other media stream analytics, such as long term statistical averaging or quality metric computation, is performed by the central analysis device to remove some of the processing burden from the individual network nodes.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: October 21, 2014
    Assignee: Cisco Technology, Inc.
    Inventor: David R. Oran
  • Patent number: 8867376
    Abstract: A system and method of verifying connectivity between hosts and optical ports in a data center is disclosed herein. The system and method includes directing, at a network control module (NCM), an electrical packet switch operatively connected to an optical port of the optical circuit switch, to transmit a data packet containing a MAC address of a host connected to an optical port determined by the NCM, and receiving, at the NCM, a response from the host, wherein the response comprises an indication that the MAC address contained in the transmitted data packet corresponds to the MAC address of a network interface card (NIC) at the host, and a determination of whether the host connected to the optical port determined by the NCM has been powered up.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: October 21, 2014
    Assignee: Google Inc.
    Inventors: Shashidar Rao Gandham, Amin Vahdat, Yu Lin
  • Patent number: 8861379
    Abstract: A test application includes instructions for configuring a digital cross connect. A first modem and a second modem are each connected to at least one telecommunications network and a digital cross connect. An integrated telephony call management service (ITCMS) client includes computer-executable instructions stored on a computer-readable medium included in the test computer.
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: October 14, 2014
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Shafqat A. Chowdhury, Henry L. Tam, Benyam S. Chekol, Krishna P. Kodakkattil, Adam I. Barrow, Jennifer B. Babu, Susan M. Middleswarth, Francis W. Peer, Nashwa F. Sidhom
  • Patent number: 8854981
    Abstract: Embodiments of the present disclosure describe techniques and configurations for handling interference measurements in a wireless communication network. An apparatus may include computer-readable media having instructions and processors coupled with the computer-readable media and configured to execute the instructions to identify, for a serving eNB, a neighboring eNB for which signal interference measurements are to be performed by one or more wireless devices served by the serving eNB, and request that the neighboring eNB transmit typical interference signals within data units which are configured for, and may or may not have, a scheduled physical downlink shared channel transmission. The wireless devices may be configured to perform the signal interference measurements based at least in part on the typical interference signals, which may include non-zero-power signals or zero-power signals. Other embodiments may be described and claimed.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: October 7, 2014
    Assignee: Intel Corporation
    Inventors: Alexei Davydov, Gregory Morozov, Ilya Bolotin, Alexander Maltsev, Vadim Sergeyev
  • Patent number: 8848544
    Abstract: A network simulator comprises a virtual network and event correlation logic. The virtual model models a network that comprises a managed portion and an unmanaged portion. The event correlation logic, when executed, is operable to perform receiving first data indicating that an event occurred in the network. A network flow is initiated at a source virtual network element (VNE) corresponding to the source network device toward a destination VNE corresponding to the destination network device. A first VNE is communicatively coupled to a particular VNE corresponding to an unmanaged portion of the network. A logical topological link to a second VNE is identified and traversed. Second data that is associated with the unmanaged portion of the network is identified. As a result, the first data is stored in association with the second data.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: September 30, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Chen Bar-Tor, Harold Lowenthal
  • Publication number: 20140286177
    Abstract: An approach for lawful intercept of over-the-top (OTT) communications is described. A request is received to intercept one or more OTT communications. Such interception can be part of a legal mandate of an appropriate law enforcement agency. One or more session and flow identification signatures associated with a packet-based network are determined. Signaling and media traffic associated with the one or more OTT communications are identified, translated and delivered to the law enforcement agency.
    Type: Application
    Filed: March 21, 2013
    Publication date: September 25, 2014
    Applicant: Verizon Patent and Licensing Inc.
    Inventors: James Ni, Elliot Eichen
  • Patent number: 8842554
    Abstract: The embodiments of the invention describe a method for antenna selection in a wireless communication network. The network includes a transceiver having a set of antennas. The transceiver is configured to transmit a frequency-hopped sounding reference signal (SRS) over a subband from a subset of antennas at a time. The transceiver transmits the frequency-hopped SRS from subsets of antennas in the set of antennas substantially alternately. In response to the transmitting, the transceiver receives information indicative of an optimal subset of antennas and transmits data from the optimal subset of antennas.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: September 23, 2014
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Neelesh B. Mehta, Koon Hoo Teo, Jinyun Zhang
  • Publication number: 20140269351
    Abstract: In one embodiment, a system for steering an input packet stream includes a traffic splitter configured to split an input packet stream into a first packet stream and a second packet stream, and a photonic switching fabric coupled to the traffic splitter, where the photonic switching fabric is configured to switch the first packet stream. The system may also include an electrical packet switching fabric coupled to the traffic splitter, where the electrical packet switching fabric is configured to switch the second packet stream, and a traffic combiner coupled to the photonic switching fabric and to the electrical packet switching fabric, where the traffic combiner is configured to merge the first switched packet stream and the second switched packet stream to produce a first packet flow.
    Type: Application
    Filed: May 24, 2013
    Publication date: September 18, 2014
    Applicant: FutureWei Technologies, Inc.
    Inventors: Alan Frank Graves, Peter Ashwood-Smith, Eric Bernier, Dominic Goodwill
  • Publication number: 20140269352
    Abstract: Embodiments are provided herein for enabling buffer status reporting for Multi-stream aggregation (MSA) in wireless networks. In an embodiment, a user equipment (UE) receives from a network, a configuration regarding one of enabling and disabling cross-node buffer status reporting. The UE further receives a first uplink grant from a first network node, and obtains a buffer status intended for a second network node. Upon enabling cross-node buffer status reporting according to the configuration, the UE transmits, in the first uplink grant to the first network node, the buffer status intended for the second network node. The first network node receives, from the UE, the buffer status intended for the second network node, and determines whether to forward the buffer status to the second network node according to the configuration regarding buffer status forwarding previously received at the first network node.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 18, 2014
    Inventors: Yishen Sun, Hao Bi
  • Patent number: 8837294
    Abstract: A test and measurement instrument for displaying data including an acquisition system configured to receive an input signal, a processor coupled to the acquisition system and configured to generate a schematic from protocol-specific information within the input signal, and a display coupled to the processor and configured to display the schematic.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: September 16, 2014
    Assignee: Tektronix, Inc.
    Inventors: Leo Frishberg, Eric Gould Bear
  • Publication number: 20140254395
    Abstract: Novel tools and techniques that enable remote network monitoring, and in particular cases, remote monitoring of traffic on a L2VPN. In a particular aspect, tools enable a vendor-independent remote monitoring capability by allowing a port on to be spanned (mirrored) to a virtual local area network attachment circuit at two different provider edge devices. Such embodiments can allow test equipment located at one provider edge device to perform monitoring at another provider edge device without regard to conflicting monitoring protocols, interfaces, and/or the like.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 11, 2014
    Applicant: CENTURYLINK INTELLECTUAL PROPERTY LLC
    Inventor: John T. Pugaczewski
  • Publication number: 20140254396
    Abstract: Systems and methods are disclosed for unified systems of network tool optimizers (NTOs). A NTO supervisor device controls switch fabric circuitry to interconnect a plurality of NTO member devices so that packets received at a source port for one NTO member device can be output to a destination port for a different NTO member device. The NTO supervisor device is further configured to analyze filters for the NTO member devices and to generate filter rules for forwarding packets among the various NTO member devices using the switch fabric circuitry. Further, additional secondary NTO supervisor devices can also be included within the unified NTO system to further expand the system. As such, a plurality of NTO member devices are managed and controlled by one or more NTO supervisor devices to form a highly scalable and efficient unified NTO system.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 11, 2014
    Inventors: Gregory S. Hilton, Andrew M. Spooner, Franz J. Weller, Patricia A. Abkowitz, Ronald A. Pleshek, Richard G. Jeske, Keith E. Cheney, Charles A. Webb, III, Scott A. Harper
  • Publication number: 20140254397
    Abstract: A network switch includes first and second clock-and-data-recovery (CDR) circuits, a cross-bar switch electrically coupling the first and second CDR circuits, and a test pattern generation circuit electrically coupled to the first CDR circuit. The test pattern generation circuit is configured to generate a test pattern and transmit the test pattern from the first CDR circuit to the second CDR circuit via the cross-bar switch. The network switch also includes a test pattern checking circuit electrically coupled to the second CDR circuit and configured to verify the test pattern received at the second CDR circuit.
    Type: Application
    Filed: May 19, 2014
    Publication date: September 11, 2014
    Applicant: OnPath Technologies Inc.
    Inventors: Richard A. Eddy, Larry Cantwell
  • Patent number: 8830845
    Abstract: Packet switch test methods include receiving a first packet from a packet switch, receiving a second packet from processing circuitry configured to model expected behavior of the packet switch, comparing the first packet to the second packet, and, based on the comparing, determining whether the packet switch is operating according to the expected behavior. Packet switch modeling methods include identifying functionality of a packet switch to be modeled, creating, in a packet switch model, a plurality of nodes representing physical and/or logical elements of the packet switch, the nodes being configured to process packet data structures and to respectively model different portions of the functionality of the packet switch relative to one another, and, in the packet switch model, connecting the nodes with pathways by which the packet data structures may be forwarded between the nodes.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: September 9, 2014
    Assignee: Ciena Corporation
    Inventors: Bruce T. Jorgens, Brian R. Town
  • Patent number: 8824335
    Abstract: Communication ability between nodes in a cluster-based computer system is tracked to inform applications executing on the nodes of the existence and quality of the endpoint-to-endpoint communications available between the nodes. Communications between a node and other nodes are tracked, and a database records the communication ability between the node and the other nodes for each link between the nodes. The tracking and recording are repeated at the other nodes. A registration by an application executing at a particular one of the nodes to receive notifications of changes in the communication ability with another node over a particular link (or in general) will cause notification of the application when the link status changes.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: September 2, 2014
    Assignee: International Business Machines Corporation
    Inventors: Rajeev Mishra, Lance W. Russell
  • Patent number: 8824465
    Abstract: A verification device that is used in a system in which a first device and a second device communicate using a physical communication path that includes at least one switch among switches included in a plurality of switch clusters and does not include a plurality of switches that belong to a different switch cluster among the plurality of switch clusters, the verification device including a verification unit that verifies whether switches included in a first communication path and a second communication path that are communication paths used for communication between the first device and the second device are included in the same switch cluster, and an output unit that outputs a result of the verifying.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: September 2, 2014
    Assignee: Fujitsu Limited
    Inventor: Yuji Nomura
  • Publication number: 20140233401
    Abstract: A method and an apparatus for setting a network node location. The method is applied in a router in a ZigBee network and includes acquiring, by the router, a network parameter of at least one network device in a network connecting to the router; calculating the number of network parameters meeting a predefined threshold condition; mapping the number of the network parameters meeting the predefined threshold condition to corresponding indication information, wherein the indication information indicates deployment performance of the router in the network; and providing the indication information for a user, wherein the indication information is used to instruct the user to set a location for the router in the network.
    Type: Application
    Filed: April 24, 2014
    Publication date: August 21, 2014
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Yanping Jiang, Yongjun Liu, Mu Zhao
  • Publication number: 20140233400
    Abstract: A system and method provides seamless switchover of a user device (UE) between a mobile data network and a wireless network while providing policy and charging control (PCC) of the data session in the mobile data network. A mobile core network component is made ASF aware to process user data traffic related to an auto switching function (ASF) server from a UE client located on the UE using a special access point name (APN). The mobile core network component then uses a dedicated deep packet inspection (ASF DPI) for all data transfers to the special APN. The core network component is then able to process the UE data traffic seamlessly as the traffic is toggled between the ASF tunnel the WiFi tunnel. By monitoring the data traffic on the ASF tunnel, the core component (GGSN/PGW) is able to provide PCC for the data session.
    Type: Application
    Filed: February 21, 2013
    Publication date: August 21, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: INTERNATIONAL BUSINESS MACHINES CORPORATION
  • Patent number: 8811195
    Abstract: A computer readable storage medium stores a set of instructions executable by a processor. The set of instructions is operable to receive an image of a switch in a communications network, the image being a representation of an internal logic of the switch; simulate a plurality of communication sessions using the image; generate a plurality of simulated communication session records corresponding to the plurality of simulated communication sessions; and evaluate a performance of the switch by comparing the plurality of simulated communication session records to a set of expected communication session records, the expected set of communication set of records corresponding to the set of simulated communication sessions.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: August 19, 2014
    Assignee: AT & T Intellectual Property I, LP
    Inventors: Daniel Clements, Joseph Thompson
  • Patent number: 8811148
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a set-top box (STB) having a controller to generate a trouble report indicating a malfunction with one or more services, and submitting the trouble report to a mitigation system. The mitigation system can be adapted to detect one or more operational faults in at least one of a Digital Subscriber Line Access Multiplexer (DSLAM), a residential gateway (RG), and the STB, cycle operations of at least one of the DSLAM, the RG, and the STB responsive to detecting an undesirable state of operation of at least one of the DSLAM, the RG, and the STB, and generate a trouble ticket directed to a service agent responsive to detecting that at least one of the DSLAM, the RG and the STB continues to exhibit at least one operational fault. Other embodiments are disclosed.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: August 19, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Chen-Yui Yang, Michele Macauda, Paritosh Bajpay
  • Publication number: 20140226496
    Abstract: A method performed by a first client-side device agent, instantiated on a hardware device that is configured to connect to a data-handling network via associated device circuitry, comprising receiving configuration data in the form of non-executable data, configuring the first client-side device agent such that the first client-side device agent has a first configuration specifying a first application on the hardware device, monitoring substantially in real-time a flow of packets between the of applications and a server-side device, selecting packets based on their association with the application, modifying or appending packet header information for the selected packets, and transmitting modified or appended packets configured such that they are routed based on the modified or appended packet header information.
    Type: Application
    Filed: April 18, 2014
    Publication date: August 14, 2014
    Applicant: HEADWATER PARTNERS I, LLC
    Inventors: Gregory G. Raleigh, Rob Rightmyer, Vladislav Kudelin
  • Patent number: 8804543
    Abstract: A load test method for a network system in which a plurality of node devices exchange packets via a first switch device by way of a second switch device, includes transmitting a plurality of first packets to the first switch device by a first node device, the plurality of first packets being addressed to the first node device via the second switch device, transmitting a plurality of second packets to the first switch device by a second node device, the plurality of second packets being addressed to the first node device via the first switch device, storing the first packets and the second packets in a queue buffer and thereafter transferring the first packets and the second packets to the first node device by the first switch device, and monitoring state information based on the number of packets waiting to be exchanged in the second switch device.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: August 12, 2014
    Assignee: Fujitsu Limited
    Inventor: Kazunari Gotou
  • Patent number: 8804498
    Abstract: Devices, systems, and methods for sending and processing session initiation protocol (SIP) responses are disclosed. According to one aspect, a method for sending an SIP response through a first telecommunications network node is described. The method includes receiving, by means of the first node, a SIP request sent by means of a second node of the network. The method includes detecting an event that interferes with processing of said request by means of the first node. The method further includes sending, to the second node, a SIP response notifying said interference. The method also includes, before the sending step, activating, within the SIP response, a parameter that allows the request to be rerouted, said parameter being configurable by means of the second node.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: August 12, 2014
    Assignee: Orange
    Inventors: St├ęphane Boizard, S├ębastien Prouvost, Olivier Cleuziou
  • Publication number: 20140211639
    Abstract: Network devices facilitate network tracing using tracing packets that travel through the network devices. The network devices may be switches, routers, bridges, hubs, or any other network device. The network tracing may include sending tracing packets down each of multiple routed paths between a source and a destination, at each hop through the network, or through a selected subset of the paths between a source and a destination. The network devices may add tracing information to the tracing packets, which an analysis system may review to determine characteristics of the network and the characteristics of the potentially many paths between a source and a destination.
    Type: Application
    Filed: March 15, 2013
    Publication date: July 31, 2014
    Applicant: Broadcom Corporation
    Inventors: William Brad Matthews, Puneet Agarwal
  • Publication number: 20140198669
    Abstract: For dynamically determining packet sampling rates, a method including setting a packet sampling rate for one or more switch ports, collecting for an interval of time a plurality of statistics for the one or more switch ports, and adjusting the packet sampling rate in response to one or more of the plurality of statistics.
    Type: Application
    Filed: January 17, 2013
    Publication date: July 17, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Deanna L. Brown, Gregory P. Wurth
  • Publication number: 20140198668
    Abstract: Systems and methods to analyze layer-2 data frame switch forwarding are provided. A first switch may be coupled to a second switch. The first switch may maintain state information mirroring the state of the second switch. A sequence number may be appended to a data frame that is received at the first switch. Forwarding compliance of the second switch may be determined by analyzing a runtime attribute of the first switch.
    Type: Application
    Filed: January 17, 2013
    Publication date: July 17, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: INTERNATIONAL BUSINESS MACHINES CORPORATION
  • Patent number: 8775179
    Abstract: The illustrative embodiments described herein provide systems and methods for authenticating a speaker. In one embodiment, a method includes receiving reference speech input including a reference passphrase to form a reference recording, and receiving test speech input including a test passphrase to form a test recording. The method includes determining whether the test passphrase matches the reference passphrase, and determining whether one or more voice features of the speaker of the test passphrase matches one or more voice features of the speaker of the reference passphrase. The method authenticates the speaker of the test speech input in response to determining that the reference passphrase matches the test passphrase and that one or more voice features of the speaker of the test passphrase matches one or more voice features of the speaker of the reference passphrase.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: July 8, 2014
    Assignee: Senam Consulting, Inc.
    Inventor: Serge Olegovich Seyfetdinov
  • Publication number: 20140185463
    Abstract: A connecting node for a communications network is described, especially for connection of a network element of the communications network to the communications network, wherein the connecting node has a first interface for connection of the network element to the connecting node and a second interface for connection of the connecting node to the communications network, wherein the connecting node is constructed to enable an exchange of data between the communications network and the network element via the first and second interface, and wherein the connecting node is constructed to read and/or to alter and/or to block data exchanged between the communications network and the network element.
    Type: Application
    Filed: April 25, 2012
    Publication date: July 3, 2014
    Applicant: ROBERT BOSCH GmbH
    Inventor: Juergen Likkei
  • Patent number: 8767565
    Abstract: Apparatus, method, and storage medium for testing a network. A network card may include four transmit engines and four receive engines to respectively generate and process packets at a data rate of 10 GHz. The network card may be configured in a first mode to also include four 10 GHz network interface units coupled to respective ones of the four 10 GHz transmit engines and the four 10 GHz receive engines. The network card may be configured in a second mode to also include a coherent multiplexer to combine packets generated by the four 10 GHz transmit engines into test traffic at a 40 GHz data rate, a packet distribution engine to accept packets at a 40 GHz data rate and distribute the accepted packets between the four 10 GHz receive engines, and a 40 GHz network interface unit coupled to the coherent multiplexer and the packet distribution engine.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: July 1, 2014
    Assignee: Ixia
    Inventors: John Dalmau, Victor Alston, Gerald Pepper, Viet Quoc Tran
  • Patent number: 8767564
    Abstract: A field communication system may perform wireless communication with field devices. The field communication system may include a connection allowing unit that determines whether or not to allow a connection to the field device by referring a field device list, the field device list listing tag names related to the field devices, an address issuance unit that automatically issues a communication address for the field device if the connection allowing unit allows the connection with the field device, an address management unit that establishes correspondences between the communication addresses and the tag names of the field devices by using the field device list, and a communication unit that transmits data to the field device designated by the tag name, the communication unit receiving the data transmitted from the field device, the data being used to control the field device designated by the tag name.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: July 1, 2014
    Assignee: Yokogawa Electric Corporation
    Inventors: Yasuyuki Nakamoto, Toshiyuki Emori, Hideki Umemoto, Hiroshi Mori
  • Publication number: 20140177454
    Abstract: Methods, systems, and computer readable media for effecting movement of virtual switch interfaces between virtual switches connected to different physical ports of a device under test are disclosed. One method includes operating a virtual switch interface behind a first edge relay on a protocol emulator to send packets to a first physical port of a device under test. The method further includes determining whether sufficient resources exist on a second physical port of the device under test to support the virtual switch interface. The method further includes, in response to determining that sufficient resources exist on the second physical port of the device under test to support the virtual switch interface, moving the virtual switch interface to a second edge relay on the protocol emulator connected to the second physical port of the device under test.
    Type: Application
    Filed: December 31, 2012
    Publication date: June 26, 2014
    Applicant: IXIA
    Inventors: Andreea Diana Lucau, Dan-Alexandru Croitoru
  • Patent number: 8755287
    Abstract: An initial address allocating unit 11 allocates a predetermined address to each of the nodes 21 connected to respective first stage switches 22. A connecting state acquiring unit 12 acquires a connecting state from each of the first stage switches 22, each of second stage switches 23 and each of third stage switches 24. An erroneous connection detecting unit 13 compares the connecting state acquired by the connecting state acquiring unit 12 with a prestored predetermined connecting state, thereby detecting an erroneous connection. An address changing unit 14 changes an address of the node 21 allocated by the initial address allocating unit 11 to satisfy a first predetermined condition based on the connecting state, when the erroneous connection is detected by the erroneous connection detecting unit 13.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: June 17, 2014
    Assignee: Fujitsu Limited
    Inventors: Kohta Nakashima, Akira Naruse
  • Patent number: 8756463
    Abstract: A method and an apparatus for data management through timer compensation in a wireless communication system are provided. In the method, when a data loss occurs at a first point, whether a data loss has occurred previously and so whether a timer is being driven are determined. Whether the driven timer stops or expires at a second point is determined. When the timer stops or expires at the second point, a timer value is compensated for with consideration of a time difference between the first point and the second point. A timer for the data loss of the first point is restarted based on the compensated timer value. Therefore, a delay of a retransmission request time for lost data in an RLC (Radio Link Control) layer may be minimized.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: June 17, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dong-Jun Kang
  • Patent number: 8750134
    Abstract: A management computer has: a storage unit in which a route information indicating a transfer route of frames in the communication network is stored; and a monitoring unit. The monitoring unit refers to the route information to transmit a frame to the transfer route and performs identification processing that identifies a location of a failure on the transfer route. First to N-th nodes (N is an integer equal to or more than 3) line up in order along the transfer route. The i-th node (i=1 to N?1) forwards a received frame to the (i+1)-th node, and the N-th node forwards a received frame to the management computer. In the identification processing, the monitoring unit sets at least one node between the first node and the N-th node as an insertion node. Then, the monitoring unit transmits a frame to the insertion node each, and identifies the location of the failure based on reception state of a frame from the N-th node.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: June 10, 2014
    Assignee: NEC Corporation
    Inventor: Satoshi Kamiya
  • Publication number: 20140153408
    Abstract: A system that incorporates the subject disclosure may include, for example, responsive to a determination that a first communication session is in a first state and a first sub-state, monitoring for an active timer associated with the first sub-state, where the first state and the first sub-state are defined by a communications protocol. The system can, responsive to a detection of the active timer, monitor for a packet switching service initiation request generated by the applications processor. The system can, responsive to detecting the packet switching service initiation request, temporarily prevent the packet switching service initiation request from being transmitted by the transceiver. Other embodiments are disclosed.
    Type: Application
    Filed: December 3, 2012
    Publication date: June 5, 2014
    Applicant: AT&T MOBILITY II, LLC
    Inventors: Jerry Jun, Inderpreet Singh Ahluwalia, Yunpeng Li
  • Patent number: 8745209
    Abstract: Implementations include a method, systems, and computer program products for adaptively configuring codecs to transmit encoded data to better utilize available bandwidth of reachable networks. One implementation is a method of transmitting encoded data from a host to a target. The method includes, selecting a communication network reachable by the host, estimating an available bandwidth from the host to the target via the selected communication network, configuring a codec from a plurality of codecs implemented in the host according to the estimated available bandwidth, encoding data using the configured codec, and transmitting the encoded data to the target.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: June 3, 2014
    Assignee: Google Inc.
    Inventors: Matthew Lloyd, Trausti Kristjansson
  • Patent number: 8743702
    Abstract: Provided is a test apparatus that tests a device under test, comprising: a plurality of channels that output and receive signals to and from the device under test; a generating section that generates a packet data sequence transmitted to and from the device under test; and a channel selecting section that selects which of the channels is used to transmit the packet data sequence generated by the generating section.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: June 3, 2014
    Assignee: Advantest Corporation
    Inventors: Shinichi Ishikawa, Masaru Goishi, Hiroyasu Nakayama, Masaru Tsuto
  • Patent number: 8743821
    Abstract: A radio communication system includes a base station device and a plurality of mobile station devices which radio-communicate with the base station device. The base station device allocates random access signal identifiers for identifying random access signals to the mobile station devices and decides an allocation period for each of the random access signal identifiers used by the mobile base stations. During the allocation period, each of the mobile station devices transmits a random access signal corresponding to the allocated random access signal identifier. Thus, it is possible to suppress a delay until the random access procedure using a dedicated preamble is complete.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: June 3, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Daiichiro Nakashima, Shohei Yamada, Yasuyuki Kato, Yasuo Sugawara
  • Patent number: 8737367
    Abstract: In one aspect, a data network is provided. The data network includes a first user and a second user, a central device, data and a spontaneous communication connection. The first and second users are each ad hoc capable. The central device provides a distribution of data such that data is transmitted from the central device to the first user. The spontaneous communication connection is established between the first and second users and the data is transmitted directly from the first user to the second user via the spontaneous communication connection.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: May 27, 2014
    Assignee: Siemens Enterprise Communications GmbH & Co. KG
    Inventor: Jean-Yves Bitterlich
  • Publication number: 20140140221
    Abstract: Embodiments generally provide techniques for mapping service modules on a network device. Embodiments identify a plurality of service modules, each configured to perform a respective service. A first one of the plurality of service modules is mapped to a first one of a plurality of virtual switches on the network device. Service policy information for a plurality of virtual switches is retrieved. The service policy information is indicative of service requirements for each of the plurality of virtual switches. Upon detecting an occurrence of a predefined event, embodiments determine a second one of the plurality of virtual switches to map the first service module to, based on the service policy information. The first service module is then mapped to the second virtual switch.
    Type: Application
    Filed: November 19, 2012
    Publication date: May 22, 2014
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Rajasekhar Manam, Venkata Naga Ramesh Ponnapalli, Sridar Kandaswamy
  • Publication number: 20140133316
    Abstract: A parameter estimation device 600 includes: a communication throughput acquiring part 601 for acquiring communication throughput that is an amount of data transmitted per unit time; and a function specification parameter estimating part 602 for estimating a function specification parameter for specifying a probability density function where communication throughput at a second time point later than a first time point is a random variable, based on the communication throughput acquired by the first time point.
    Type: Application
    Filed: June 12, 2012
    Publication date: May 15, 2014
    Applicant: NEC CORPORATION
    Inventor: Hiroshi Yoshida
  • Publication number: 20140133315
    Abstract: The present invention is directed towards a method for using a listening policy for a virtual server on an intermediary device. An intermediary device establishes for a first virtual server a first listening policy with an expression for evaluating packets received by the intermediary device to determine whether the packet may access the first virtual server. The intermediary device listens for packets at a first internet protocol (IP) address and a first port specified for the first virtual server. Then, the intermediary device evaluates the expression of the first listening policy to a first packet received at the first IP address and first port and determines whether to provide the first packet to the first virtual server based on a result of the evaluation.
    Type: Application
    Filed: January 23, 2014
    Publication date: May 15, 2014
    Applicant: Citrix Systems, Inc.
    Inventors: Dinesh Gandhewar, Josephine Suganthi
  • Publication number: 20140133305
    Abstract: A networking device of one embodiment includes a processor, a memory, a networking module, and a traffic manager module. The networking module is configured to receive a packet comprising a first header (the first header comprising information identifying a flow), add a second header to the packet (the second header identifying the packet as a test packet), and assign processing rules to the packet based at least on the information identifying the flow. The traffic manager module is configured to remove one of the first header and the second header from the packet and process the packet in accordance with the processing rules.
    Type: Application
    Filed: November 15, 2012
    Publication date: May 15, 2014
    Applicant: Fujitsu Network Communications, Inc.
    Inventors: Stephen J. Brolin, Debbie C. Lun, Ali Zaringhalam
  • Patent number: 8719398
    Abstract: A network performance monitor for a computer. The performance monitor maintains a baseline for communication paths between a networked computer and other networked computers connected. The network performance baseline is established and maintained by measuring and updating network performance parameters of the communication paths. The network performance parameters are updated using values obtained during time intervals when the communication path consumed a bandwidth approximately equal to its estimated bandwidth. If congestion is detected on the network or the network is underutilized, values of the network performance parameters obtained during that interval are not used to update the network performance parameters. Some performance parameters in the baseline, such as minimum and maximum bandwidth values may be updated by computing a moving average of each parameter. Asymmetric weight values for updating the moving average may be selected based on a direction of change of a value of a network parameter.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: May 6, 2014
    Assignee: Microsoft Corporation
    Inventors: Tin Qian, Aravind Ramarathinam, Michael Bishop
  • Patent number: 8718045
    Abstract: A location customer premise equipment (CPE), the location CPE in electronic communication with a location telephone, a remote CPE and a remote telephone. The location CPE includes a first processor. The first processor receives a switch signal from the location telephone, and sends a corresponding first request signal to the remote CPE, and then the first processor receives a corresponding first response signal and a phone number of an unused network of the remote telephone from the remote CPE, and dials the phone number of an unused network to establish an unused network communication link with the remote CPE and cuts off a used network communication link.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: May 6, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Pei-Yu Wang, Chien-Ju Huang
  • Patent number: 8717927
    Abstract: A first communication node communicates by multiple-input-multiple-output (MIMO) wireless communications with a second communication node of a wireless communication system. The method includes receiving a Sounding Reference Signal (SRS) over a plurality of subcarriers transmitted by the second communication node for MIMO communications. Channel quality is measured responsive to the sounding reference signal to output a first channel quality value. A demodulation reference signal is received over a plurality of subcarriers transmitted by the second communication node for MIMO communications. Channel quality is measured responsive to the demodulation reference signal to output a second channel quality value. Reliability of the measurements of the first channel quality value and the second channel quality value is determined. The first and second channel quality values are combined while compensating for the determined reliability difference between the measurements to generate a combined channel quality value.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: May 6, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Chester Park
  • Publication number: 20140119203
    Abstract: A packet switch receives a management packet sent for discovery on a data flow's path through a network. The switch creates a test packet (310T) which looks like a packet belonging to the data flow of interest. The test packet is processed by the switch like the data flow of interest except that the test packet is not necessarily transmitted. The processing results may include the egress ports for the test packet, and if the ports are part of a LAG or ECMP group, the results provide the group and the group members associated with the egress ports. Firewall actions and other information can be included. The switch may forward the results to the originator of the management packet. The switch may insert the results into the management packet and forward the management packet on the ports determined as egress ports for the test packet. Other features are also provided.
    Type: Application
    Filed: October 26, 2012
    Publication date: May 1, 2014
    Inventors: Shivakumar Sundaram, Krishnamurthy Subramanian, Pathangi Narasimhan Janardhanan, Balaji Venkat Venkataswami
  • Patent number: 8711679
    Abstract: A disclosed example method to identify a failure in a logical circuit involves receiving non-requested trap data from a plurality of switches forming a logical circuit. The logical circuit spans first, second, and third logical networks. The example method also involves polling first and second switches of the logical circuit exclusive of others of the plurality of switches of the logical circuit. The first switch forms a first network-to-network interface between the first logical network and the second logical network. The second switch forms a second network-to-network interface between the second logical network and the third logical network. The first and second switches are selected for polling based on the trap data indicating a problem at the first and second switches. The example method also involves identifying a failure of the logical circuit without manual intervention based on the polling.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: April 29, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: William Taylor, David Massengill, John Hollingsworth
  • Patent number: 8711713
    Abstract: Systems and methods for sinking port mirrored from one or more identified flows of data to any node in a network are provided. Moreover, the network is configured to convey the mirrored data to the sink, without the need for any facilities expressly dedicated for this purpose. The present invention removes the requirement to co-locate the sink port within the same logical node. The present invention uses a mirrored flow configured as a provisioned layer two point-to-point connection, such as a Switched Permanent Virtual Circuit (SPVC), Pseudo-Wire (PWE3), a Virtual Local Area Network (VLAN) cross-connect, Provider Backbone Bridging-Traffic Engineering (PBB-TE), and the like. The node with the mirrored port is configured to create copies of the appropriate set of packets (i.e., ingress, egress packets, or both based on provisioning and based on the identified flow), and to forward the packets to the sink port through the provisioned point-to-point connection.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: April 29, 2014
    Assignee: Ciena Corporation
    Inventors: Ronald Mark Parker, Christopher Michael Leduc, Morteza Ghodrat
  • Patent number: 8711714
    Abstract: A method, that comprises selecting for simulation a first cell comprising a access station. The method also includes determining a first cell pattern comprising a first plurality of cells surrounding the first cell. The method additionally includes simulating, for each cell of the first plurality of cells, at least one wireless parameter associated with at least one wireless signal. The method further includes determining a second cell pattern comprising a second plurality of cells surrounding the first cell pattern. Each cell of the second plurality of cells comprises a copy of a simulation result of a corresponding cell of the first plurality of cells. The method also includes simulating, for the first cell, at least one wireless parameter associated with at least one wireless connection. The simulation is based on the simulation results of the first plurality of cells and the copied simulation results of the second plurality of cells.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: April 29, 2014
    Assignee: Fujitsu Limited
    Inventors: Chenxi Zhu, Wei-Peng Chen