Loopback Patents (Class 370/249)
  • Patent number: 11012306
    Abstract: Presented herein are methodologies for managing servers in a datacenter or cloud service environment. A method includes sending, from a first baseboard management controller (BMC), to other BMCs in a network, a first message indicating a desire to establish a master-slave relationship; receiving a response from a second BMC from among the other BMCs, the response indicating an ability to function as a master in the master-slave relationship; sending, from the first BMC, a second message to the second BMC confirming establishment of the master-slave relationship between the second BMC and the first BMC; sending, from the first BMC to the second BMC, a request for configuration information; and in response to the request for configuration information, receiving, from the second BMC, configuration profile data representative of a configuration of a server, which is controlled by the second BMC.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: May 18, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Sayantan Bhattacharyya, SriSai Ganesh V Venkatramani, Yogindar Das Yasodhar, Harshad Prabhu
  • Patent number: 10962621
    Abstract: A communication circuit, a communication system, and a self-diagnosis method of the communication circuit, which facilitate specifying a failed part which causes a communication failure when a communication failure occurs in a communication system, are provided. A serial signal for self-diagnosis is supplied to a first conversion unit, a pulse signal for self-diagnosis corresponding to the serial signal for self-diagnosis output from the first conversion unit is input to a second conversion unit instead of a pulse signal received by a pulse signal reception unit, and the serial signal corresponding to the pulse signal for self-diagnosis output from the second conversion unit is transmitted to the outside via a serial signal transmission unit.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: March 30, 2021
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventor: Hidekazu Kikuchi
  • Patent number: 10937488
    Abstract: An electronic circuit including: a driver for outputting a driven first signal by driving a first signal among signals received in parallel; a selector circuit for selecting one of the first signal and a second signal among the signals received in parallel; and a compensator circuit for generating a first compensation signal for compensating the driven first signal, in response to the first signal or the second signal selected by the selector circuit, wherein, when the selector circuit selects the first signal, the compensator circuit generates the first compensation signal to compensate for an inter-symbol interference of the driven first signal, and wherein, when the selector circuit selects the second signal, the compensator circuit generates the first compensation signal to compensate for a crosstalk noise of the driven first signal caused by a driven second signal driven from the second signal.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: March 2, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Soomin Lee
  • Patent number: 10924387
    Abstract: The embodiments herein relate to a method and a network switch device for preventing the occurrence of loops in a network topology comprising a plurality of network switch devices, each switch device is assigned a unique SW-ID. The method comprises exchanging each SW-ID between all switch devices; and building, for each switch device, a routing table. The method further comprises when receiving, at a first switch device, a data frame from a second switch device that includes an SS-ID, assigned to the second switch device, and the data frame is received at a port of the first switch device, if, according to the routing table of the first switch device, the assigned SW-ID for this port is different from the SS-ID included in the data frame, discarding the data frame, otherwise, processing forward the data frame.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: February 16, 2021
    Assignee: Telia Company AB
    Inventor: Babak Tamizkar
  • Patent number: 10887209
    Abstract: A method is provided that is performed by a network element in a network. The network element receives a packet. The network element inserts into a header of the packet, packet replication information indicating whether and to which egress interface the network element performs a replication operation on the packet, wherein the header is an In-Situ Operations, Administration and Management (IOAM) header. The network element sends the packet, with the packet replication information included in the IOAM header, in the network.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: January 5, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Nagendra Kumar Nainar, Carlos M. Pignataro, Frank Brockners, Shwetha Subray Bhandari
  • Patent number: 10848422
    Abstract: A system and a method for receiving data packets at the inputs of two data handlers. Each data handler compares address data in the individual data packet with a first and a second list of addresses and forward packets to each other, so that data packets with one of the first addresses are fed to one data handler and packets with one of the second addresses are fed to the other data handler. The data handlers output the data packets received so that one data handler outputs all packets with addresses of the first addresses and the other data handler outputs all packets with addresses of the second addresses.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: November 24, 2020
    Assignee: Napatech A/S
    Inventors: Michael Milde Lilja, Claus Ek
  • Patent number: 10819605
    Abstract: A method and an apparatus for implementing delay measurement. The method includes: determining, by a measurement apparatus, a delay T0 generated when a first packet is transmitted at a first priority over a first loopback path that includes a first sub-path and a second sub-path; determining a delay T1 generated when a second packet is transmitted over a second loopback path that includes the first sub-path, the second sub-path, a third sub-path, and a fourth sub-path, where the second packet is transmitted at the first priority over the first sub-path and the second sub-path and is transmitted at a second priority over the third sub-path and the fourth sub-path; and determining a delay according to T0 and T1. Therefore a delay can be measured only by implementing a measurement function in the measurement apparatus, thereby resolving a problem of complex implementation.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: October 27, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Guoping Li, Danian Shi, Xiaoyang Xu
  • Patent number: 10798110
    Abstract: Identifying network loops is disclosed including determining a first data packet having a time to live (TTL) that at least meets a first condition, the first data packet having a destination internet protocol (IP) address; within a time period after the determining of the first data packet, identifying a plurality of second data packets that are to be transmitted to the destination IP address; and determining whether a network loop exists for the destination IP address based on TTLs of the plurality of second data packets.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: October 6, 2020
    Assignee: Alibaba Group Holding Limited
    Inventors: Yangyang Song, Lele Ma, Min Hu
  • Patent number: 10778593
    Abstract: Embodiments for communicating packets with a first port of a network element without the first port being communicatively coupled to another device (e.g., testing equipment) are described. In one embodiment, a packet is generated by testing equipment that is communicatively coupled to a second port of the network element. The packet includes a tag that uniquely identifies the first port. The network element communicates the packet from the second port to the first port based on the tag. The network element also removes the tag from the packet. The removal can occur before the packet is received at the first port or after the packet is received at an ingress module of the first port. In response to the removal of the tag, the network element enters the first port into a loopback mode that is internal to the first port.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: September 15, 2020
    Assignee: Arista Networks, Inc.
    Inventors: Yunli Xiong, Hugh W. Holbrook, Xuanran Zong
  • Patent number: 10776302
    Abstract: Systems, methods, and devices can include a first die comprising a first arbitration and multiplexing logic, a first protocol stack associated with a first interconnect protocol, and a second protocol stack associated with a second interconnect protocol. A second die comprising a second arbitration and multiplexing logic. A multilane link connects the first die to the second die. The second arbitration and multiplexing logic can send a request to the first arbitration and multiplexing logic to change a first virtual link state associated with the first protocol stack. The first arbitration and multiplexing logic can receive, from across the multilane link, the request from the first die indicating a request to change the first virtual link state; determine that the first interconnect protocol is ready to change a physical link state; and change the first virtual link state according to the received request while maintaining a second virtual link state.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: September 15, 2020
    Assignee: Intel Corporation
    Inventors: Joon Teik Hor, Ting Lok Song, Mahesh Wagh, Su Wei Lim
  • Patent number: 10771372
    Abstract: Techniques for transmitting test traffic on a communication link are disclosed. A computer system includes at least two nodes, interconnected by a particular communication link. A test engine associated with one of the two nodes identifies a level of data traffic being transmitted on the particular communication link. Based on the level of data traffic, the test engine selects a level of test traffic to be transmitted on the particular communication link. The node associated with the test engine transmits the selected level of test traffic on the particular communication link. The test traffic is transmitted concurrently with the data traffic on the particular communication link. The node receiving the test feedback transmits test feedback. Based on the test feedback, the test engine generates test results for the particular communication link. The test engine determines and/or executes a corrective action based on the test results.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: September 8, 2020
    Assignee: Oracle International Corporation
    Inventors: Peter John Hill, Lukasz Sulek, Albert A Arcuino
  • Patent number: 10693796
    Abstract: Embodiments provide a system and method for network tracking. By using packet capture applications having a flow identifier and a time stamper, one or more raw packets from one or more packet flows intercepted from a network can be tagged with a unique identifier and timestamp that can later be used to aggregate packet flows that have been analyzed by one or more capture applications. The unique identifier can relate to the network interface of the particular capture application and can also have an increasing value, where the increase in value can be monotonic. Later capture applications, while capable of generating secondary timestamps, can disregard those secondary timestamps for the primary timestamp of the first capture application in order to remove complications arising from latency issues.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: June 23, 2020
    Assignees: International Business Machines Corporation, Napatech A/S
    Inventors: William A. Bird, Russell Couturier, Vijay Dheap, Patrick V. Johnstone, Ben A. Wuest, Alex Omø Agerholm
  • Patent number: 10645012
    Abstract: A method of reducing the bandwidth usage of a network comprises intercepting traffic between a TCP server and a TCP client using TCP protocols that use client acknowledgements; identifying client acknowledgements from the TCP protocols; identifying the sequence number of a last received client acknowledgements from the intercepted traffic; identifying the sequence number of a last sent client acknowledgement from the intercepted traffic; calculating an unacknowledged byte value based on the difference between the last received client acknowledgement sequence number and the last sent client acknowledgement sequence number; comparing the calculated unacknowledged byte value with a predetermined threshold value, to determine whether the calculated unacknowledged byte value is at least as great as the predetermined threshold value; and transmitting the identified client acknowledgements into the network when the compared unacknowledged byte value is at least as great as the predetermined threshold value.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: May 5, 2020
    Assignee: Adaptiv Networks Inc.
    Inventors: Matthew Robert Williams, Yuri Nebogatov, Miika Anttoni Klemetti
  • Patent number: 10581694
    Abstract: Systems, methods, and computer-readable media for generating counterexamples for equivalence failures between models of network intents. A listing of conflict rules corresponding to an equivalence failure between at least first and seconds model of networks intents describing the operation and communication of network devices in a network is obtained. A logical exclusive disjunction between first conflict rules from the first model and corresponding second conflict rules from the second model is calculated. One or more counterexamples corresponding to the equivalence failure are generated based at least in part on the logical exclusive disjunction, such that a given counterexample comprises network and packet conditions that cause the first conflict rules to trigger a first action and cause the second conflict rules to trigger a second action that is different from the first action. Hot fields that are more likely to be associated with the equivalence failure are identified in the counterexample.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: March 3, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventor: Kartik Mohanram
  • Patent number: 10582393
    Abstract: A method, a device, and a non-transitory storage medium are described in which a network slice deployment service is described. The network slice deployment service includes storing network resource and capability information that indicates available network resources in a network. Network level requirement information pertaining to a request for network service from a user is generated. The network level requirement information is used to select available network resources based on the network resource capability information. The network slice deployment service calculates network resource utilization associated with available network resources so that optimal usage of network resources can be selected and end-to-end network slice deployment layout information can be generated and used to provision a network slice deployment layout that supports the request for network service.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: March 3, 2020
    Assignee: Verizon Patent And Licensing Inc.
    Inventors: Prasad Deviprasad, Ravi Potluri, Kalyani Bogineni, Hans Raj Nahata
  • Patent number: 10551807
    Abstract: A method is provided for connecting an input/output interface of a tester equipped for control unit development to a model of a technical system present in the tester using an already-existing basic test model of a control unit. The input/output interface is designed for connecting a hardware implementation of the control unit or for connecting a technical system to be controlled, and the model to be connected to the input/output interface is a test model of the technical system to be controlled or a test model of the control unit. The already-existing basic test model of the control unit is accessed, and at least one communication requirement is extracted from the basic test model of the control unit.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: February 4, 2020
    Assignee: dSPACE digital signal processing and control engineering GmbH
    Inventor: Holger Naundorf
  • Patent number: 10531255
    Abstract: Methods, systems and devices for OTAP (Over the Air Provisioning) of WirelessHART (Highway Addressable Remote Transducer) devices. A unique system level setting can be provided for enabling over the air provisioning of WirelessHART devices in a WirelessHART network having one or more field device access points. Each field device access point can be configured to be enabled/disabled to advertise in a specific WirelessHART network ID in association with a target WirelessHART network ID with respect to the WirelessHART network. A join key is provided in association with a new WirelessHART network ID to which at least one field device access point among the plurality of field device access points needs to be advertised along with a time limit, thereby enabling provisioning of the WirelessHART devices to a target wireless network, wherein the target WirelessHART network ID and the join key are written with respect to a new WirelessHART device. The new WirelessHART device can be then restarted.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: January 7, 2020
    Assignee: Honeywell International Inc.
    Inventors: Maneesh Bhagwani, Prasad Samudrala, Sandeep Rudraraju
  • Patent number: 10523515
    Abstract: Methods and systems for discovery of a set of nodes in a network. The method comprises selecting a node amongst nodes in a group of nodes to be processed; and instructing to implement a discovery procedure for the selected node. The procedure comprises broadcasting a neighbor discovery request from a node currently selected on a shared transmission medium of the network; and receiving at the node currently selected replies sent by neighbor nodes on the shared transmission medium and adding the neighbor nodes to the group of nodes to be processed; and repeating the steps of selecting and instructing for other nodes in the group of nodes to be processed, until all nodes of the set are discovered.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: December 31, 2019
    Assignee: International Business Machines Corporation
    Inventors: Urs Hunkeler, Clemens Lombriser, Hong Linh Truong
  • Patent number: 10505679
    Abstract: Systems and methods are disclosed herein for determining that a diagnostic mode is enabled for a port of a switch, the port being part of a VLAN, and responsively designating a port of the plurality of ports as a loopback port, where a packet transmitted on the loopback port is forwarded according to an entry of a forwarding database. The disclosure further describes generating a layer 2 multicast index comprising an entry for the port and an entry for the loopback port, programming the forwarding database with an entry for a destination address of the switch pointing to the layer 2 multicast index, generating a diagnostic packet, and transmitting the diagnostic packet on the loopback port. Additionally, the disclosure describes determining that the diagnostic packet is received by any port of the plurality of ports, and responsively determining a network problem exists and causing a diagnostic protocol to be executed.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: December 10, 2019
    Assignee: Extreme Networks, Inc.
    Inventors: Donald Grosser, Shankara Ramamurthy
  • Patent number: 10484282
    Abstract: A computer-implemented method comprising: receiving, by a first controller device in a first OpenFlow domain, a packet from an originating endpoint in the first OpenFlow domain destined for a destination endpoint in a second OpenFlow domain that is separate from the first OpenFlow domain; outputting, by the first controller device, a broadcast message identifying the destination endpoint to a plurality of respective controller devices associated with separate OpenFlow domains; receiving, by the first controller device, a response to the broadcast message from the destination endpoint via a second controller device associated with the second OpenFlow domain; updating, by the first controller device, a local flow table identifying a flow for transmitting the packet to the destination endpoint based on information included in the response; and transmitting, by the first controller device, the packet towards the destination endpoint based on updating the local flow table.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: November 19, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Venkata Siva N. Amulothu, Ashish Kapur, Vishal Shukla
  • Patent number: 10462680
    Abstract: A transmission method for communication by a transmission apparatus of a wireless communication system performing wireless communication in a beamforming scheme is disclosed. The method may include assigning identifiers to all transmission beam directions in which transmission is possible and transmitting a reference signal with a beam identifier assigned in each direction, when identifier information of a beam direction, which allows reception from a reception apparatus, and error detection information are received, examining the error detection information to examine whether an error exists, and transmitting a response signal to the reception apparatus according to whether the examined error exists, and transmitting and receiving data on the basis of the received beam information when the error does not exist, as a result of the examination of the error detection information.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: October 29, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyunkyu Yu, Cheol Jeong, Taeyoung Kim, Jeongho Park
  • Patent number: 10411776
    Abstract: Certain aspects of the present disclosure relate to beamforming training using a multiple-input and multiple-output (MIMO) transmission scheme. Certain aspects of the present disclosure provide an apparatus that generally includes a processing system configured to generate a frame associated with beamforming training, the frame comprising an indication of whether the beamforming training is to be performed using a multiple-input and multiple-output (MIMO) transmission scheme. The apparatus may also include an interface configured to output the frame for transmission.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: September 10, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Alecsander Petru Eitan, Amichai Sanderovich, Gal Basson
  • Patent number: 10389641
    Abstract: A method of operating a communications network is disclosed. In order to manage a network, it is first necessary to establish the state the network is in. This is difficult in practice because the network operational data stored and transmitted in the network takes a myriad of forms owing to the variety of suppliers and types of network equipment. There is a need to distil that network operational data down to aggregate network operational data which can be taken to provide an indication of the state of the network which is of a manageable size, and to which network management apparatus can react by sending control commands to the network. The problem of generating aggregate network operational data is difficult because of the heterogeneity of network operational data items.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: August 20, 2019
    Assignee: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY
    Inventors: Michael Turner, Alexander Healing
  • Patent number: 10382143
    Abstract: A method of and system for increasing the reliability of signal detection, that includes receiving at least one audio recording comprising at least one sound marking signal and performing waveform analysis on the sound marking signal to determine whether the sound marking signal is fragmented into a plurality of signal portions. If the sound marking signal is fragmented into a plurality of signal portions, the method further includes confirming that portions of the fragmented sound marking signal possess characteristics of a sinusoidal signal.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: August 13, 2019
    Assignee: AC Global Risk, Inc.
    Inventor: Leonid Gorsha
  • Patent number: 10313976
    Abstract: In wireless communications, an access point may send a first frame and a second frame to multiple stations. In one aspect, the first frame may be a frame for initiating a sounding protocol. The first frame may include subband-related information. In response to the first and second frames, one or more stations may generate beamforming feedback information based on content of the second frame according to the subband-related information of the first frame. The beamforming feedback information may include average signal-to-noise ratios (SNRs), where an SNR may be for a space-time stream averaged over data subcarriers in a subband. The stations may send a third frame(s) that includes the beamforming feedback information to the access point. The access point may generate, and transmit to the stations, a beamforming matrix based on the third frame(s). Other methods, apparatus, and computer-readable media are also disclosed.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: June 4, 2019
    Assignee: NEWRACOM, INC.
    Inventors: Sungho Moon, Young Hoon Kwon, Daewon Lee, Yujin Noh
  • Patent number: 10298508
    Abstract: A communication system includes: a transmission unit configured to transmit each of a plurality of measurement packets at a predetermined transmission interval; a reception unit configured to receive the plurality of measurement packets which have passed through a predetermined network for a predetermined number of times; and an available bandwidth estimation unit configured to calculate a cumulative value of a queuing delay by using reception time information indicating temporal information about reception of the measurement packets and transmission time information indicating temporal information about transmission of the measurement packets, and estimate an available bandwidth of the network by using the calculated cumulative value of the queuing delay.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: May 21, 2019
    Assignee: NEC CORPORATION
    Inventor: Yoshiaki Nishikawa
  • Patent number: 10237632
    Abstract: A mobile monitoring device for continual remote monitoring of a condition is provided. The device includes a sensor module for producing sensor module data including inertial navigation data. A first transceiver component receives network manager data including inertial navigation data from a local network manager and may transmit sensor module data to the network manager for remote monitoring by a server. An associator component establishes an association with the local network manager if inertial navigation data of the sensor module and local network manager approximate each other and dissolves the association of the inertial navigation data of the sensor module and local network manager does not approximate each other. An inertial navigation component incrementally estimates a geographical location of the monitoring device using the previously received geographical location data and subsequent sensor module inertial navigation data.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: March 19, 2019
    Inventors: Barry John McCleland, Eugene Christiaan van Beljon
  • Patent number: 10231277
    Abstract: The present invention is to process a request of an application layer in an electronic device, and a method for operating the electronic device comprises transmitting a request signal through a first interface, and, when a response signal corresponding to the request signal is not received before a timer expires, retransmitting another request signal through a second interface. The request signal and the another request signal correspond to a single request signal generated in the electronic device. Also, the present invention includes other embodiments than the described embodiments.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: March 12, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kang-Jin Yoon, Jiangwei Xu, Jin-Ho Lee, Yong-Seok Park
  • Patent number: 10210128
    Abstract: An apparatus includes a pass-through module that includes connector pins to connect with at least one active portion of a motherboard connector and to separately connect with at least one inactive portion of the motherboard connector. A routing function on the pass-through module redirects a set of bidirectional lanes from the connector pins connected to the active portion of the motherboard connector to the connector pins connected to the inactive portion of the motherboard connector to enable a connection of the set of bidirectional lanes to at least one other motherboard resource connected to the inactive portion of the motherboard connector.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: February 19, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Raphael Gay, Roger A. Pearson, Shane Ward, Byron A. Alcorn
  • Patent number: 10191659
    Abstract: A data access method for a memory storage device is provided. The memory storage device includes a rewritable non-volatile memory module and a buffer memory. The method includes: receiving at least one operation command including at least one read command; and counting an amount of accumulative data of the at least one read command, and if the amount of accumulative data reaches a data threshold, writing the data in the buffer memory into the rewritable non-volatile memory module.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: January 29, 2019
    Assignee: PHISON ELECTRONICS CORP.
    Inventor: Kok-Yong Tan
  • Patent number: 10110448
    Abstract: A method of establishing a service operations administration and maintenance (OAM) session between an originator and a reflector in a communication network includes continuously monitoring, by the reflector, any test packets transmitted by the originator. The originator transmits to the reflector, at a time indicated by a first timestamp, a test packet. The reflector receives the test packet at a time indicated by a second timestamp and generates a unique flow identifier that identifies the reflector. The reflector transmits the test packet to the originator. The reflector assigns a sequence number to the test packet. The originator receives the test packet at a time indicated by a fourth timestamp. The reflector stores the unique flow identifier at least for the duration of the OAM session.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: October 23, 2018
    Assignee: Accedian Networks Inc.
    Inventor: Anders Wallman
  • Patent number: 10069724
    Abstract: The disclosed computer-implemented method for verifying the functionality of network paths may include (1) constructing, at a source node within a network, a test packet that uniquely identifies a network path whose functionality is unverified, (2) sending the test packet to a target node within the network via the network path in an attempt to verify the functionality of the network path, (3) receiving, back from the target node, the test packet sent to the target node via the network path, and then (4) verifying, at the source node, the functionality of the network path based at least in part on the test packet received back from the target node. Various other methods, systems, and computer-readable media are also disclosed.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: September 4, 2018
    Assignee: Juniper Networks, Inc.
    Inventors: Raveendra Torvi, Ravi I Singh, Harish Sitaraman, Yakov Rekhter
  • Patent number: 10057178
    Abstract: A method of reducing the bandwidth usage of a network comprises intercepting traffic between a TCP server and a TCP client using TCP protocols that use client acknowledgements; identifying client acknowledgements from the TCP protocols; identifying the sequence number of a last received client acknowledgements from the intercepted traffic; identifying the sequence number of a last sent client acknowledgement from the intercepted traffic; calculating an unacknowledged byte value based on the difference between the last received client acknowledgement sequence number and the last sent client acknowledgement sequence number; comparing the calculated unacknowledged byte value with a predetermined threshold value, to determine whether the calculated unacknowledged byte value is at least as great as the predetermined threshold value; and transmitting the identified client acknowledgements into the network when the compared unacknowledged byte value is at least as great as the predetermined threshold value.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: August 21, 2018
    Assignee: LiveQoS Inc.
    Inventors: Matthew Robert Williams, Yuri Nebogatov, Miika Anttoni Klemetti
  • Patent number: 10045235
    Abstract: Systems and methods for verifying compliance of a communication device with one or more requirement specifications is provided. In one exemplary embodiment, a method may be performed at a communication device for verifying compliance of the communication device with a requirement specification. Further, while a test loop is activated in the communication device, the method may include receiving, at a receiver of the communication device and on a downlink of a radio link, downlink data. In response to determining an occurrence of an event specific to verifying the compliance of the communication device with the requirement specification and used to control when the communication device transfers the received downlink data from the receiver to a transmitter of the communication device, the method may include transferring, from the receiver, to the transmitter, the received downlink data. Also, the method may include transmitting, from the transmitter on an uplink of the radio link, the received downlink data.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: August 7, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Leif Mattisson, Béla Rathonyi
  • Patent number: 10027552
    Abstract: Methods and systems for discovery of a set of nodes in a network. The method comprises selecting a node amongst nodes in a group of nodes to be processed; and instructing to implement a discovery procedure for the selected node. The procedure comprises broadcasting a neighbor discovery request from a node currently selected on a shared transmission medium of the network; and receiving at the node currently selected replies sent by neighbor nodes on the shared transmission medium and adding the neighbor nodes to the group of nodes to be processed; and repeating the steps of selecting and instructing for other nodes in the group of nodes to be processed, until all nodes of the set are discovered.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: July 17, 2018
    Assignee: International Business Machines Corporation
    Inventors: Urs Hunkeler, Clemens Lombriser, Hong Linh Truong
  • Patent number: 10007748
    Abstract: This disclosure relates generally to electronic design automation using high level synthesis techniques to generate circuit designs that include safety features. The algorithmic description representation can be specified in a first language and include at least one programming language construct associated with a first safety data type. Compiling the algorithmic description may involve identifying the at least one construct, accessing a first safety data type definition associated with the first safety data type, and generating a second representation of the circuit design based on the algorithmic description representation and the first safety data type definition. The second representation can be provided in a second language and include at least one safety feature for a portion of the circuit design associated with the at least one construct.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: June 26, 2018
    Assignee: Altera Corporation
    Inventor: Adam Titley
  • Patent number: 9985952
    Abstract: The systems, methods and apparatuses described herein provide a computing device configured for ensuring its proximity to a communication partner. In one aspect, the computing device may comprise a communication port and a processor. The processor may be configured to receive a request from the communication partner via the communication port, send a response to the request to the communication partner, generate a secondary value that includes a selected portion of the request and a selected portion of the response, generate authenticating data to authenticate the secondary value and send the generated secondary value and authenticating data to the communication partner via the communication port. In another aspect, the communication partner is configured to ensure proximity of the computing device.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: May 29, 2018
    Assignee: OLogN Technologies AG
    Inventors: Sergey Ignatchenko, Dmytro Ivanchykhin
  • Patent number: 9967371
    Abstract: A method of operation for a provider edge device of a core network includes receiving a customer frame from an access network; the customer frame having a first Virtual Local Area Network (VLAN) tag of a first predetermined bit length. The first VLAN tag including a service instance identifier. The service instance identifier of the first VLAN tag is then mapped into a second VLAN tag of a second predetermined bit length greater than the first predetermined bit length. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: May 8, 2018
    Assignee: Cisco Technology, Inc.
    Inventors: Ali Sajassi, Norman W. Finn
  • Patent number: 9967189
    Abstract: A system and a method determine network conditions. The system includes a server computer and a client computer. The server computer is configured to transmit data packets comprising a data object from the server computer to the client computer. The client computer includes a transmission latency detector and a transmission bandwidth detector. The transmission latency detector uses transmission time and receipt time values to determine the changes in time it takes selected portions of the data object to be transmitted from the server computer to the client computer. The transmission bandwidth detector uses identified back-to-back data packets to determine the transmission bandwidth between the server computer and the client computer.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: May 8, 2018
    Assignee: Intel Corporation
    Inventors: Sujal M. Patel, Jeffrey M. Ayars, Rahul Agarwal, Bradley D. Hefta-Gaub, Peter S. Haight, Dale R. Stammen, Philip Rosedale
  • Patent number: 9952276
    Abstract: Automated test equipment capable of performing a high-speed test of semiconductor devices is presented. The automated test equipment comprises a system controller for controlling a test program, wherein the system controller is coupled to a bus. The tester system further comprises a plurality of modules also coupled to the bus, where each module is operable to test a plurality of DUTs. Each of the modules comprises a tester processor coupled to the bus and a plurality of configurable blocks communicatively coupled to the tester processor. Each of the configurable blocks is operable to communicate with an associated DUT and further operable to be programmed with a communication protocol for communicating test data to and from said associated device under test.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: April 24, 2018
    Assignee: ADVANTEST CORPORATION
    Inventors: Jonh Frediani, Andrew Niemic
  • Patent number: 9942407
    Abstract: A method, system, and computer program product for providing call loop detection and prevention for VoIP SIP based wholesale traffic termination when multiple carriers are involved in handling the same phone call is provided. A method of detecting a call loop includes receiving an originated call, determining whether an origination number of the originated call is a valid phone number, when the origination phone number is invalid, determining a number of calls in a Provisional State with an invalid origination number and the same destination number that were started during a time interval, when the origination phone number is valid, determining a number of calls with the same origination number and the same destination number that were started, but not answered, during the time interval, and when the number of calls per time interval exceeds a threshold for the number of calls, determining that a call loop has been detected.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: April 10, 2018
    Assignee: XCast Labs, Inc.
    Inventors: Vladimir Smelyansky, Victor Grinberg
  • Patent number: 9940151
    Abstract: A method performed by a hypervisor executing a virtual machine for enabling a performance measurement between the virtual machine and a peer node, and a method performed by a physical machine comprising the hypervisor are provided. The method performed by the hypervisor comprises intercepting a packet transmitted from, or destined to, the virtual machine, the packet comprising a destination address to the virtual machine or to the peer node, and determining whether to insert a hypervisor time stamp or not in the packet. The method further comprises, when it is determined to insert the hypervisor time stamp in the packet, inserting a hypervisor time stamp in the packet, and forwarding the packet to its destination according to the destination address.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 10, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Andreas Johnsson, Ramide A. S Dantas, Christofer Flinta, Catalin Meirosu, Djamel Sadok
  • Patent number: 9917442
    Abstract: A system for management of distributed control and real-time data for an electric utility network having remote devices and legacy subsystems includes a distributed communications network and a plurality of nodes coupled to the distributed communications network. Each of the nodes includes a multi-protocol interface having a boundary protocol convertor comprising a protocol validation engine to validate messages and commands from the remote devices and an in-field distributed data analyzer. The multi-protocol interface provides a standard data model for the remote devices.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: March 13, 2018
    Assignee: Prolucid Technologies Inc.
    Inventors: Graham Beauregard, Tarun Tuli, Robert Leigh, Jan Bergstrom
  • Patent number: 9897650
    Abstract: An integrated circuit including first pads and second pads, a first receiver circuit and a first driver circuit respectively connected to the first pad, a second receiver circuit and a second driver circuit respectively connected to the second pad, and a first loopback circuit having a first input terminal electrically connected to the first receiver circuit, a first output terminal electrically connected to the first driver circuit, a second output terminal electrically connected to the second driver circuit, and a second input terminal electrically connected to the second receiver circuit may be provided. At a normal mode, the first loopback circuit electrically connects the first input terminal to the second output terminal and electrically connects the second input terminal to the first output terminal. At a test mode, the first loopback circuit electrically connects the first input terminal to the first output terminal.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: February 20, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Daehoon Na, ChaeHoon Kim, HyunJin Kim, Jangwoo Lee, Jeongdon Ihm
  • Patent number: 9886075
    Abstract: A three-way handshaking method includes: controlling a first port in a first specific mode to send a first specific signal to a second port, and controlling the first port to enter a second specific mode; when the first port receives a second specific signal, determining the second port is in the second specific mode and controlling the first port to send a third specific signal to the second port; and when it is determined that the second port is in a third specific mode, controlling the first port to enter the third specific mode.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: February 6, 2018
    Assignee: Realtek Semiconductor Corp.
    Inventors: Hsuan-Ting Ho, Liang-Wei Huang, Heng Cheong Lao, Ta-Chin Tseng
  • Patent number: 9866425
    Abstract: Systems and methods described herein provide a method for operation, administration and maintenance (OAM) of data message transmission. The method comprises reading a transmit register of a transmitter associate with a first management entity to determine a transmit status of the transmit register. The method further comprises loading a data message into the transmit register when the transmit status of the transmit register indicates availability. The method further comprises embedding the data message as an out-of-band message with physical code sublayer modulation, and transmitting the out-of-band message on the physical code sublayer to a receiver associated with a second management entity. A transmit state machine of the transmitter and a receive state machine of the receiver establish a handshake to allow the out-of-band message to be passed asynchronously.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: January 9, 2018
    Assignee: Marvell International Ltd.
    Inventor: William Lo
  • Patent number: 9860150
    Abstract: In general, techniques of this disclosure may enable a remote provider edge (PE) router to improve convergence time in response to a link failure in an Ethernet Virtual Private Network (EVPN) by establishing per-Ethernet Segment Identifier (ESI) Bidirectional Forwarding Detection (BFD) sessions with other PE routers that are coupled to the PE router in an EVPN. The remote PE may determine that at least two PE routers with the remote PE are locally connected to a multi-homed customer network by a particular Ethernet Segment. The remote PE may send, based on determining that the at least two PE routers are connected to the multi-homed customer network by the particular Ethernet Segment, an ESI Ping request packet through the intermediate network to one of the at least two PE routers, wherein the ESI Ping request packet includes at least a BFD discriminator and an ESI for the particular Ethernet Segment.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: January 2, 2018
    Assignee: Juniper Networks, Inc.
    Inventors: Nitin Singh, Kapil Arora, Ramesh Kandula, Santosh Pallagatti Kotrabasappa
  • Patent number: 9851387
    Abstract: A high voltage power monitoring system includes a controller, a detector connected to the controller, and a generator connected to the detector and the controller. The generator may be configured to generate a plurality of test signals according to control signals generated via the controller. The generator may provide the test signals to the detector. The detector may be configured to provide the plurality of test signals to a test loop. The detector may be configured to simultaneously sense a first voltage, a second voltage, a first current, and a second current. The first voltage and the first current may correspond to a first test signal of the plurality of test signals. The second voltage and the second current may correspond to a returned version of the first test signal that has passed through the test loop.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: December 26, 2017
    Assignee: Lear Corporation
    Inventors: Miguel Angel Aceña, Youssef Ghabbour, Jose Gabriel Fernández Bañares
  • Patent number: 9838106
    Abstract: Embodiments relate to a feedback method channel state information. The method includes acquiring, by user equipment, first channel state information based on a first channel state information measurement resource that is configured by a base station and that corresponds to a first antenna port representing a horizontal dimension. The method also includes acquiring, based on a second channel state information measurement resource, which is configured by the base station, of a second antenna port representing a vertical dimension, second channel state information. The method also includes feeding back channel state information to the base station, which includes: feeding back the first channel state information to the base station according to a first feedback mode, and feeding back the second channel state information to the base station according to a second feedback mode, where the second feedback mode is different from the first feedback mode.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: December 5, 2017
    Assignee: Huawei Technologies Co., Ltd
    Inventors: Jianqin Liu, Jianghua Liu
  • Patent number: 9742638
    Abstract: Generally described, systems and methods are provided for detecting the impact of network failures. The system collects performance information from a plurality of nodes and links in a network, aggregates the collected performance information across paths in the network, processes the aggregated performance information for detecting failures on the paths, adjusts the set of performance information by removing the performance information for any nodes considered to be associated with performance information that is statistically different from performance information from other nodes at a given location or extrapolates the collected information to other paths, and determines the impact to customers of the network failures detected using the adjusted set of performance information.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: August 22, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Karl Andre McCabe, Eoin Francis Cavanagh, Sonali Roy, Carlos Vara Callau, Tyson James Lamoreaux, Alan Michael Judge, Timothy Richard Kohn