Having A Dedicated Test Line Or Channel Patents (Class 370/247)
  • Patent number: 10912148
    Abstract: System and method embodiments are provided for enabling flexible and reliable UE-to-UE based relay. The embodiments include using fountain codes for combining signals at a suitable network layer higher than a media access control (MAC) sub-layer and using a MAC sub-layer hybrid automatic repeat request (HARQ) transmission scheme. When a relay UE in a UE group for joint reception receives, from a network access point, a data packet intended for a destination UE in the UE group and including fountain code at the higher network layer, the relay UE sends the data packet to the destination UE and returns a HARQ ACK message at the MAC sub-layer to the access point. The destination UE then receives and decodes the data packet. Subsequently, upon receiving the entire data, the destination UE sends an ACK message at the higher network layer to the access point.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: February 2, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ming Jia, Jianglei Ma, Peiying Zhu
  • Patent number: 10848985
    Abstract: Methods, systems, and computer readable media may be operable to facilitate station steering based upon computed channel impact. A channel impact of moving a station to one or more different link points within a WLAN may be calculated, and based upon the calculated channel impacts, the station may be steered to a certain link point. Using the calculated channel impacts, one or more stations may be selected for removal from an overloaded link point, a new link point may be selected for association with a station, and a determination may be made whether other WLAN changes may cause a backhaul or fronthaul channel utilization to exceed a corresponding threshold.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: November 24, 2020
    Assignee: ARRIS ENTERPRISES LLC
    Inventors: Kurt Alan Lumbatis, Jay Strater
  • Patent number: 10462023
    Abstract: A method and system for automatically generating and sending a test message to one or more apparatus associated with a user are disclosed. The test messages can be pushed to the one or more apparatus and a response received from the one or more apparatus prior to connecting a communication between two devices.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: October 29, 2019
    Assignee: Mitel Networks Corporation
    Inventor: Michael Ross Montcalm
  • Patent number: 10200731
    Abstract: Methods and apparatus for distributing content using a spectrum generation device. In one embodiment, digital content is received via a time-multiplexed network transport (such as Gigabit Ethernet), and converted to frequency channels suitable for transmission over a content distribution (e.g., Hybrid Fiber Coaxial (HFC)) network. In one variant, the conversion is performed using digital domain processing performed by a full spectrum generation device. Additionally, methods and apparatus for selectively adding, removing, and/or changing digital content from the full spectrum device are also disclosed. Various aspects of the present invention enable physical (infrastructure) consolidation, and software-implemented remote management of content distribution.
    Type: Grant
    Filed: February 17, 2018
    Date of Patent: February 5, 2019
    Assignee: Time Warner Cable Enterprises LLC
    Inventor: Glen Hardin
  • Patent number: 10135556
    Abstract: A signal transmission method includes receiving, by a controller, a request signal sent by a first transmitter. The method includes establishing, by the controller according to the request signal, a second optical path that connects the first transmitter to the second receiver in the optical switching network (OSN). The method includes sending, by the controller, to the second receiver according to the request signal, a reset signal used to instruct the second receiver to be reset to an initial state. The method includes sending, by the controller, an acknowledgement signal to the first transmitter. The acknowledgment signal is used to instruct the first transmitter to send, by using the second optical path, an optical signal to the second receiver.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: November 20, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Wenxiong Wei, Yingchun Yang, Shuncheng Pan
  • Patent number: 10129408
    Abstract: Methods and systems detect residual echo in an audio signal in a non-causal manner. A non-causal residual echo detector allows accurate detection of any residual echo from an AEC (acoustic echo canceller). The non-causally detected residual echo may be utilized to perform various actions such as selecting between different causal AECs, tuning a causal AEC, and/or characterizing the performance of the causal AEC. Aspects leverage an understanding that the information about residual echo being present in a signal does not have to be causal in the sense that it is acceptable and even advantageous to know some time afterwards (e.g., after a signal has undergone acoustic echo cancellation and is output for further processing or transmission) that a residual echo was present in the signal. Such an approach is different from the case of an AEC, which needs to know right away, with a fairly low signal delay involved, whether residual echo is present.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: November 13, 2018
    Assignee: GOOGLE LLC
    Inventors: Per Åhgren, Ivo Creusen, Tina le Grand
  • Patent number: 10042412
    Abstract: In some embodiments, provided are circuits and approaches for responding to wake requests over a data bus such as with a USB interface. An interconnect PHY may be placed into an aggressive power reduction mode and in response to a detected wake request on the bus, respond in a sufficient time by keeping at least a portion of a transmitter data path in the PHY powered on during the reduced power mode and responding to the wake request while the PHY re-boots in the background.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: August 7, 2018
    Assignee: Intel Corporation
    Inventors: Amit Kumar Srivastava, Jia Jun Lee, Asad Azam
  • Patent number: 9917653
    Abstract: A mobile terminal and controlling method thereof are disclosed, by which a communication can be performed using a sound wave or an ultrasonic wave. The present invention includes a display unit configured to display information, a microphone configured to receive an input of a sound, and a controller, if a preset user input is received, controlling the microphone to enter a state capable of listening to a communication signal on at least one band of a sound wave and an ultrasonic wave.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: March 13, 2018
    Assignee: LG ELECTRONICS INC.
    Inventor: Changmok Kim
  • Patent number: 9485501
    Abstract: A system and method for measuring and quantifying image retention in a display device. The method involves displaying a test pattern (206, 306, 406, 606, 706) having at least one dark feature (210, 310, 410, 610) and at least one light feature (208, 308, 408, 608). The method further involves the displaying an analysis pattern (202, 302, 402, 602) having at one gradient feature (204, 304, 404, 604a-c) with a plurality of regions of different levels. The levels of the gradient feature may then be matched up with the levels displayed in the regions formerly displaying the dark feature (210, 310, 410, 610) and/or the light feature (208, 308, 408, 608). Thus, image retention may be determined by visual inspection.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: November 1, 2016
    Assignee: Barco N.V.
    Inventors: Lode René Eleonora De Paepe, Goert F. M. Carrein
  • Patent number: 9344336
    Abstract: A system and method of managing virtual link state includes receiving, at a first device, a first status update associated with the virtual link from a second device. The first status update includes a first management status value (RM) and a first operational status value (RO). The system and method further includes determining a second management status value (LM) associated with the first device, determining a second operational status value (LO) based on the first status update and the RM, transmitting a second status update for the virtual link to the second device, the second status update including the LM and the LO, and determining a state of the virtual link based on the RM, the RO, the LM, and the LO. The first device is configured to be coupled to the second device using a physical network link partitioned into a plurality of first virtual links including the virtual link.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: May 17, 2016
    Assignee: DELL PRODUCTS L.P.
    Inventors: Sam J. Lee, Anoop Ghanwani, Thomas Kelley Chenault
  • Patent number: 8995286
    Abstract: A method, apparatus, and machine readable storage medium is disclosed for establishing a test protocol processor which identifies and removes predetermined messages from a network element port buffer. Subsequent to removal the test protocol processor may perform one or more of several actions according to the results of statistical calculations. These actions include allowing the message to drop, replacing the message after a delay, replacing the message after altering the payload of the message, and replacing the message after altering the message type. The disclosed autonomous self disrupting network element is particularly useful for providing a means to perform in situ field testing of network performance indicators under desired statistical conditions.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: March 31, 2015
    Assignee: Alcatel Lucent
    Inventors: Nausheen Naz, Csaba Marton, Suat R. Eskicioglu, Manikka Thyagarajan, Michael H. Lashley
  • Patent number: 8976686
    Abstract: A Tandem connection monitoring (TCM) path search method, a TCM path creation method, a path search management system, and a path creation management system are provided. The source end TCM mode and the sink end TCM mode at a single level of each node in an Optical Channel Data Unit-k (ODUk) path are acquired; and a TCM path at the single level between nodes in the ODUk path is calculated according to the source end TCM mode and the sink end TCM mode at the single level of each node that are acquired. TCM level information and the sink end TCM mode of a second node for TCM path creation between a first node and the second node are acquired by specifying the first node and the second node; and a TCM path between the first node and the second node that are specified is created and stored.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: March 10, 2015
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Shujian Wang, Heng Shen
  • Patent number: 8971203
    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: December 10, 2013
    Date of Patent: March 3, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Chester Park
  • Patent number: 8964534
    Abstract: A monitor and control device includes a monitor and control unit transmitting to a monitor target device a monitor and control signal (M&CS) through a M&CS path in a case of a malfunction occurred in a main signal path, and transmits to the monitor target device the M&CS through the main signal path in a case of a malfunction occurred in the M&CS path, the monitor target device including: a first path connection unit connected to the main signal path passing either a main signal in which the M&CS for monitoring and controlling the monitor target device is multiplexed or a main signal in which the M&CS is not multiplexed; a second path connection unit connected to the M&CS path passing the M&CS; and a selection unit selecting whether to perform transmission and reception of the M&CS by either one of the main signal path and the M&CS path.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: February 24, 2015
    Assignee: NEC Corporation
    Inventor: Tomotsune Nishimura
  • Publication number: 20150023182
    Abstract: A communication system includes a radio transmission apparatus that terminates a radio communication line, a radio transmission apparatus that terminates a radio communication line, and a line control apparatus that performs data communication with the radio transmission apparatuses. The radio transmission apparatuses and monitor the line states of the radio communication lines and notify the line control apparatus of the line states. The line control apparatus controls data to be output to the radio transmission apparatuses and according to the line states.
    Type: Application
    Filed: November 20, 2012
    Publication date: January 22, 2015
    Inventor: Koichi Nakagawa
  • Patent number: 8923139
    Abstract: A system is provided for identifying service affecting conditions in an access portion of a network through which a number of subscribers are connected to an exchange. The access network includes subscriber lines connected to DSL subscriber modems. The system includes a receiver for receiving pilot signals from a modem connected to one of the subscriber lines. A measuring unit is operatively associated with the receiver for measuring electrical characteristics of the received pilot signals. A controller is operatively associated with the measuring unit and uses the measured electrical characteristics to identify a service affecting condition. The subscriber modem pilot signals include differential mode signals and the measuring unit measures common mode of each wire of the subscriber line. By using combinations of measurements and deductive logic, the system can detect one or more service affecting conditions.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: December 30, 2014
    Assignee: Tollgrade Communications, Inc.
    Inventors: Muhammad Akbar Khan Afzal, Pieter Bas, Roderick Warner
  • Patent number: 8885657
    Abstract: Back pressure is mapped within a network, and primary bottlenecks are distinguished from dependent bottlenecks. Further, the presently disclosed technology is capable of performing network healing operations designed to reduce the data load on primary bottlenecks while ignoring dependent bottlenecks. Still further, the presently disclosed technology teaches identifying and/or suggesting a switch port for adding a node to the network. More specifically, various implementations analyze traffic load and back pressure in a network, identify primary and dependent bottlenecks, resolve the primary bottlenecks, collect new node parameters, and/or select a switch port for the new node. Further, a command can be sent to a selected switch to activate an indicator on the selected port. New node parameters may include new node type, maximum load, minimum load, time of maximum load, time of minimum load and type of data associated with the new node.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: November 11, 2014
    Assignee: Brocade Communications Systems, Inc.
    Inventors: Michael Atkinson, Vineet Abraham, Sathish Gnanasekaran, Rishi Sinha
  • Patent number: 8885689
    Abstract: A first node including a physical layer device, a first transceiver and a second transceiver. The first transceiver includes a first analog front end connected to a first transmission line. The first analog front end is configured to transfer first data between the physical layer device and a second node via the first transmission line. The second transceiver includes a second analog front end connected to a second transmission line. The second analog front end is configured to transfer second data between the physical layer device and a third node via the second transmission line. A first type of the second transmission line is different than a second type of the first transmission line. The first node is configured to perform as a repeater using data repeating functions at a link layer control level.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: November 11, 2014
    Assignee: Marvell Hispania S. L.
    Inventors: Jorge Vicente Blasco Claret, Jose Luis Gonzalez Moreno, Salvador Iranzo Molinero, John Vincent Egan, Agustin Badenes Corella
  • Patent number: 8861377
    Abstract: A transmission management system receives, from a request source terminal which is an addition request source requesting to add a certain transmission terminal as a destination candidate, an addition request for the destination candidate, identification information of the request source terminal and identification information of a request target terminal which is an addition request target of the destination candidate; and informs the request target terminal of an approval request for requesting the request target terminal to approve the addition request, and the identification of the request source terminal. The system receives an addition request response from the request target terminal in response to the addition request.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: October 14, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Taro Okuyama, Takahiro Asai
  • Patent number: 8854985
    Abstract: A system for wireless communication using ultrasonic signals that includes a transmission module, which receives input signals from a wireless device, modifies the received input signals in a manner that converts each received input signal into a corresponding ultrasonic signal and wirelessly transmits each said ultrasonic signal over an ultrasonic link, and a receiving module, which receives the transmitted ultrasonic signals, recovers the corresponding input signals therefrom and enables outputting each respective input signal through one or more output devices. Modification of the input signals may include compressing, encoding and modulating the input signals. The input signals may be voice audio signals for enabling to use the system for supporting phone calls by enabling ultrasonic communication between for instance, a wireless headset and a mobile phone.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: October 7, 2014
    Inventor: Yossef Tsfaty
  • Patent number: 8825042
    Abstract: An apparatus for determining network health, the network comprising a plurality of network base station transceivers in bidirectional communication with radios operating in the network, a first radio transmitting a transmitted signal. The apparatus comprises first and second devices for determining respective first and second signal parameters of respective first and second received signals, the first and second received signals responsive to the transmitted signal transmitted during normal over-the-air operation of the first radio, wherein the received signal received at the first receiver is time aligned with the received signal received at the second receiver to ensure the first and second devices determine the first and second signal parameters of the same transmitted signal and wherein the network health is responsive to the first and second signal parameters.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: September 2, 2014
    Assignee: Lows Location Systems, LLC
    Inventors: John McCarthy, Robert Mitchell
  • 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: 8799991
    Abstract: A number of wireless networks are established by a network device, each wireless network having an identifier. Requests are received from client devices to establish wireless network sessions via the wireless networks using the identifiers. Network privileges of the client devices are segmented into discrete security interfaces based on the identifier used to establish each wireless network session.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: August 5, 2014
    Assignee: Juniper Networks, Inc.
    Inventors: Adam Michael Conway, Lee Klarich, Ning Mo
  • Patent number: 8786473
    Abstract: Systems and methods of storing previously transmitted data and using it to reduce bandwidth usage and accelerate future communications are described. By using algorithms to identify long compression history matches, a network device may improve compression efficiently and speed. A network device may also use application specific parsing to improve the length and number of compression history matches. Further, by sharing compression histories and compression history indexes across multiple devices, devices can utilize data previously transmitted to other devices to compress network traffic. Any combination of the systems and methods may be used to efficiently find long matches to stored data, synchronize the storage of previously sent data, and share previously sent data among one or more other devices.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: July 22, 2014
    Assignee: Citrix Systems, Inc.
    Inventors: Allen R. Samuels, Richard Jensen, Zubin Dittia, Dan S. Decasper, Michael Ovsiannikov, Robert D. Plamondon
  • Patent number: 8787155
    Abstract: Fast error reporting is provided in networks that have an architected delayed error reporting capability. Errors are detected and reported without having to wait for a timeout period to expire. Further, failures of other components caused by the delay are avoided, since the delay is bypassed.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: July 22, 2014
    Assignee: International Business Machines Corporation
    Inventors: Edward W. Chencinski, Michael Jung, Martin Rehm, Philip A. Sciuto
  • 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
  • Patent number: 8750157
    Abstract: A diagnostic apparatus including a signal analyzer and a throughput projector for diagnosing a wireless home network. The signal analyzer analyzes wireless communication parameters at identifiable locations within a coverage area associated with the wireless home network. The throughput projector projects wireless throughput levels for at least one proposed wireless device differing in communication capabilities from the diagnostic apparatus at each of the identifiable locations, based on the communication parameters analyzed by the signal analyzer together with parameters which identify relative differences in communication capabilities of the diagnostic apparatus and the at least one proposed wireless device.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: June 10, 2014
    Assignee: Quantenna Communications Inc.
    Inventors: Ramanujam Jagannath, Bahador Amiri, Sigurd Schelstraete, Qiang Wang, Steve Schultz, Hossein Dehghan
  • Patent number: 8750136
    Abstract: The monitoring method includes: detecting a cut link among a plurality of links forming a link aggregation; counting lost packets related to remaining links in the plurality of links excluding the cut link to obtain a first lost packet count for each first address included in packets passed through the remaining links; sorting the first lost packet counts into first segments corresponding to the remaining links; determining degradation in quality for each first segment on the basis of the first lost packet counts sorted into the first segments; determining whether the cut link is in failure on the basis of the determined degradation in quality for each first segment; and outputting a determination result of whether the cut link is in failure.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: June 10, 2014
    Assignee: Fujitsu Limited
    Inventor: Tetsuya Nishi
  • Patent number: 8743705
    Abstract: A wireless mesh network test system comprises a plurality of mesh network nodes, each comprising an antenna connection. An antenna network couples the antenna connections of the plurality of nodes, and a plurality of attenuators are distributed in the antenna network such that the attenuators simulate distance between the wireless mesh network nodes.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: June 3, 2014
    Assignee: Digi International Inc.
    Inventors: Travis S. Holman, Steven L. Minch, John P. Filoso, John Clark Roberts, Paul A. Dahl, Michael L. Zarns
  • Patent number: 8724481
    Abstract: One or more field devices, and a controller are connected so as to be able to communicate with a field device through a first communication route, and a device monitoring unit that is connected so as to be able to communicate with the field device through a second communication route are provided, wherein the device monitoring unit is provided with a checking tool for checking a status of the field device and the status of communication through the first and/or the second communication routes, based on a response received through the second communication route from the field device in response to a signal sent through either the first communication route or the second communication route.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: May 13, 2014
    Assignee: Azbil Corporation
    Inventors: Kouki Sasaki, Hiroyuki Tsugane
  • 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
  • Patent number: 8687507
    Abstract: A probing method, arrangement, and system for estimating a condition, such as available bandwidth, of a data path in a communication network including multiple nodes are described. A probe-packet sender node transmits probe packets with a sent inter-packet separation and a time-to-live towards an intermediate node. Control message packets are generated by the intermediate node when the time-to-live expires. The probe-packet sender node receives the control message packets and calculates a received inter-packet separation. An estimate of the data path condition can be generated based on the sent inter-packet separation and the received inter-packet separation.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: April 1, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Andreas Johnsson, Svante Ekelin, Christofer Flinta, Jan-Erik Mångs, Bob Melander
  • Patent number: 8644136
    Abstract: Fast error reporting is provided in networks that have an architected delayed error reporting capability. Errors are detected and reported without having to wait for a timeout period to expire. Further, failures of other components caused by the delay are avoided, since the delay is bypassed.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: February 4, 2014
    Assignee: International Business Machines Corporation
    Inventors: Edward W. Chencinski, Michael Jung, Martin Rehm, Philip A. Sciuto
  • Patent number: 8634304
    Abstract: An Ethernet cable used with an Ethernet test-set allows a single connection to an Ethernet port of a network element while maintaining individual connections to separate ports on the test-set. The far-end of the signal path is a single Ethernet cable port having its transmit and receive pins interconnected. The far-end port interconnections cause a test signal which has traveled to the far-end port to be returned to the test-set and to be receive in a test-set port other than the originating port Two signal paths can be simultaneously tested with the same test-kit. Interconnections between the test-set ports by way of the cable maintain a “no-signal”alarm disabled, which otherwise would be energized because there is no signal being received in the port from which the test signal originated.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: January 21, 2014
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Jeffrey Motter, Steven Franks, Michael Pollock, Don Bodge
  • Patent number: 8634328
    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: December 3, 2010
    Date of Patent: January 21, 2014
    Assignee: International Business Machines Corporation
    Inventors: Rajeev Mishra, Lance W. Russell
  • Patent number: 8625411
    Abstract: A mesh network architecture is disclosed whose protected services can be restored quickly after the failure of a network element (i.e., a network node, a network transmission facility). Furthermore, the protected services can be restored after all single and most multiple network-element failures as quickly as a ring network can recover from a single network-element failure. And still furthermore, the illustrative embodiment is also advantageous in that it can be administered and maintained, for most purposes, as a collection of distinct ring networks. Embodiments of the present invention can use any protocol or transmission technology (e.g., wavelength division multiplexing, SONET/SDH, ATM, etc.). Furthermore, embodiments of the present invention distinguish between the transport function, the provisioning function, and the fault notification functions of a network and provide that each of the functions can be accomplished by different networks using different protocols.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: January 7, 2014
    Assignee: Bay Microsystems, Inc.
    Inventors: Santhanam Srivivasan, Sasisekharan Raguram, Pradeep Shrikrishna Limaye
  • Patent number: 8619598
    Abstract: In one embodiment, a method includes generating an aggregated pseudowire status message at a first network device in a Multi-Protocol Label Switching (MPLS) network, transmitting the aggregated pseudowire status message to a second network device on a Label Switched Path (LSP) extending between the first and second network devices in the MPLS network, and establishing at the first network device, an aggregated pseudowire status session with the second network device upon receiving a response to the aggregated pseudowire status message on the LSP. The aggregated pseudowire status message configured to verify a current status of pseudowires on the LSP. An apparatus is also disclosed.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: December 31, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Luca Martini, George Swallow
  • Patent number: 8576728
    Abstract: A system comprises a communications network configured to support transmission of a plurality of communications streams and a resource manager communicatively coupled to the communications network and configured to provision resources of the communications network to the plurality of communications streams. The system may further comprise a performance test manager communicatively coupled to said communications network and configured to identify a communication stream from said plurality of communications streams, identify a test network path for said identified communication stream that is substantially free of other network traffic, and perform a performance test over said test network path.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: November 5, 2013
    Assignee: Verizon Patent and Licensing Inc.
    Inventor: Hassan Omar
  • Patent number: 8477632
    Abstract: An antenna testing device for testing an antenna assembled in a portable wireless communication device includes a data processing unit configured to receive signals from a CPU of the portable wireless communication device, a feedback unit, and a duplexer. The data processing unit sends the signals to the antenna by the feedback unit and the duplexer. The feedback unit feeds back mixed feedback signals mixed with signals leaked from the antenna to the data processing unit. The data processing unit judges whether the antenna is working properly according to the mixed feedback signals.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: July 2, 2013
    Assignee: FIH (Hong Kong) Limited
    Inventors: Yuan-Hong Lo, Kuan-Chi Liao, De-Hung Wang, Yu-Ting Chen, Yi-Hsien Weng, Jhao-Yang Li
  • Patent number: 8477687
    Abstract: A wireless mesh network system includes a plurality of wireless devices adapted to forward a message packet. Each of the wireless devices includes a transmitting unit, a receiving unit, a communications controller, and a RAM. Further, the communications controller controls such that an original source address contained in a message packet forwarded by a wireless device, which is an address of the wireless device that has firstly transmitted the message packet, and a packet number that identifies the message packet are stored in the RAM, and controls such that a message packet received is forwarded if information contained in the message packet received is not consistent with information of the original source address and the packet number stored in the RAM.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: July 2, 2013
    Assignee: Futaba Corporation
    Inventor: Tadashi Iwasa
  • Patent number: 8428226
    Abstract: The present invention discloses a method of call trace on a next generation network (NGN) media gateway (MG). According to the present invention, a softswitch device adds an extended trace indication to an H.248 message related to the call to be traced; the MG determines whether the received H.248 message needs to be traced according to the extended trace indication; and if the H.248 message needs to be traced, trace the call to which the transaction in the H.248 message belongs. By the method, the MG can trace the entire calling process of a call.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: April 23, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Dong Guo
  • Patent number: 8428004
    Abstract: Techniques are presented for facilitating and monitoring wireless network connections. Clients and intermediate nodes are configured to interact with one another via network connections. Initially, the clients wirelessly connect to a select one of the intermediate nodes. Tests may be periodically issued to the clients and to the intermediate nodes to measure and track performance and quality of the network connections. Billing records may also be recorded and billing policies verified for client activities occurring during the network connections.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: April 23, 2013
    Assignee: Intel Corporation
    Inventors: Amber Sistla, Jeremy Rover, Asha Keddy
  • Patent number: 8411576
    Abstract: A route monitor control system includes a plurality of OAM cell handlers (OCHs); a plurality of virtual path handlers (VPHs); a plurality of virtual channel handlers (VCHs); trunks; and a control unit. The control unit issues an OAM (operation and maintenance) cell send instruction to a specific one of the plurality of OAM cell handlers, and carries out a loop back control to at least one of the virtual path handler, the virtual channel handler, and the trunk, which are associated with the specific OAM cell handler, as an object unit in response to the OAM cell send instruction. Also, when the specific OAM cell handler sends out an OAM cell from the specific OAM cell handler to the object unit in response to the OAM cell send instruction, the control unit determines a fault position based on returning or non-returning of the OAM cell from the object unit to the specific OAM cell handler.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: April 2, 2013
    Assignee: Juniper Networks, Inc.
    Inventor: Yoshinori Takasaki
  • Patent number: 8351338
    Abstract: A test system for testing a communication system having a plurality of communication links is disclosed. The test system has a single tester for performing various measurement and diagnostic tasks on a single link. The test system also has a switching system for independently testing any link by coupling the tester into any one link. The tester is coupled into the link by coupling the tester input to the link's transmitter and the tester output to the link's receiver. The switching system couples the tester such that all remaining links of the communication system have a unique one of the plurality of transmitters coupled to a unique one of the plurality of receivers, whereby the operation of the communication system can be maintained while testing individual links.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: January 8, 2013
    Assignee: JDS Uniphase Corporation
    Inventors: William Joseph Thompson, Ernest E. Bergmann, Bill (Xunxie) Wang
  • Patent number: 8331430
    Abstract: A system includes at least one adaptive filter coupled to a first communication channel and at least one other communications channel. The at least one adaptive filter includes at least one set of adaptive filter coefficients. A memory stores at least one predetermined set of filter coefficient thresholds. The filter coefficient thresholds may be indicative of channel faults, channel to channel faults or a length of the channel. A controller is configured to compare the set of filter coefficients to the predetermined set of filter coefficient thresholds. The controller is configured to determine the information about the channels based on compare results.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: December 11, 2012
    Assignee: Broadcom Corporation
    Inventors: Peiqing Wang, Minshine Shih, Bruce H. Conway
  • Patent number: 8327408
    Abstract: A method for troubleshooting a set top box is disclosed and can include receiving a trouble ticket from a set top box and initiating a self test at the set top box. The method can also include receiving test results from the set top box and analyzing the test results to isolate a problem.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: December 4, 2012
    Assignee: AT&T Intellectual Property I, LP
    Inventors: Raghvendra Savoor, Zhi Li
  • Patent number: 8305903
    Abstract: A system having an acquisition device for acquiring test and measurement data and providing such data to a computer system for display of such data. For each input data signal, the acquisition device has two differential receivers of opposite polarity each having an output coupled to the input of different ones of two pairs of registers, resulting in four registers sampling the input data signal periodically at four different times in accordance with two clocking signals of different phase (phase shifted 90°) to provide a sampling rate four times the rate of the clocking signals. The resulting sample data is stored in memory of the acquisition device along with downsampled data representing a compressed, low resolution, version of the sample data which records toggling in the sample data notwithstanding such downsampling. The computer system can request readout of stored sample data and/or downsampled data during or after acquisition of sample data and downsampled data.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: November 6, 2012
    Assignee: C Speed, LLC
    Inventors: Justin Ralph Louise, Kevin Roy Francis, Brian David Harry, Bryan Thomas Shepardson
  • Patent number: 8295194
    Abstract: A wired network connection establishing method includes the steps of: configuring two network devices to exchange connection capacity information with each other through first and second twisted pair cables of a network cable, the connection capacity information including at least a first connection mode using four of the twisted pair cables, a second connection mode using three of the twisted pair cables, and a third connection mode using two of the twisted pair cables; configuring the two network devices to detect a number of the twisted pair cables in the network cable capable of supporting a normal connection; and configuring the two network devices to determine which one of the first, second, and third connection modes is to be used for establishing a connection based on the number of the twisted pair cables capable of supporting a normal connection.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: October 23, 2012
    Assignee: Realtek Semiconductor Corp.
    Inventors: Liang-Wei Huang, Ta-Chin Tseng, Ting-Fa Yu, Lie-Way Fang
  • Patent number: 8280442
    Abstract: Even if a receiver has a normal gain and a lowered intermodulation distortion characteristics, a fault detection is possible. A test signal transmitter sends a test signal having at least two frequencies to a radio receiver through a coupler. A digital signal processing section receives a signal which includes an IM3 component generated by the radio receiver and measures the electric power of fundamental wave components and the IM3 component. Then, the digital signal processing section calculates the gain of the radio receiver and IIP3, which is an index for intermodulation distortion characteristics, of the radio receiver 207 from the calculated electric power. A base station control section determines whether the gain and IIP3 of the radio receiver fall in predetermined ranges to determine whether the radio receiver works normally or has a fault.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: October 2, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Haruo Nakano, Kazuyuki Hori, Masanori Taira, Takahiro Chiba, Yasuyuki Magara
  • Patent number: 8260286
    Abstract: Aspects of the present invention include methods, apparatuses and systems that may be used for radio frequency and performance testing of communication equipment in a telecommunications network. According to one aspect of the invention, received data may be discarded during a test whenever a device being testing is unable to store the data, for example in a buffer. According to another aspect of the invention, the device being tested will provide data for transmission processing whenever there is an opportunity during the testing to transmit data, thus allowing the device to be aggressive in its data transmission.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: September 4, 2012
    Assignee: Nokia Corporation
    Inventors: Jukka Vikstedt, Christopher Peter Callender