Patents Examined by Xavier S. Wong
  • Patent number: 11329915
    Abstract: Within a communication system having redundant routers, datagrams are forwarded from source communication devices to target communication devices via routers based on routing information stored in routing tables of the routers, wherein for each communication terminal, a virtual router is configured as a default gateway, to which virtual router a group of a plurality of routers is assigned, where routers from the same group assigned to a virtual router select from among themselves a router operated as the active default gateway, the routers not operated as the active default gateway are operated as reserve gateways, and where the active default gateway in question transmits, only upon a request for stored address assignments that is received from a reserve gateway, all stored address assignments to a requesting reserve gateway in bundled form.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: May 10, 2022
    Assignee: Siemens Aktiengesellschaft
    Inventor: Faruk Keskin
  • Patent number: 11316781
    Abstract: In some aspects, a wireless node in a wireless multi-hop network may receive, from a central unit in the wireless multi-hop network, a configuration indicating that a first wireless interface between the wireless node and a first parent node of the wireless node is to be used for a first traffic type, and that a second wireless interface between the wireless node and a second parent node of the wireless node is to be used for a second traffic type; configure a first connection with the first parent node via the first wireless interface and a second connection with the second parent node via the second wireless interface based at least in part on the configuration; and transmit or receive a communication using the first connection or the second connection based at least in part on a traffic type of the communication.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: April 26, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Navid Abedini, Karl Georg Hampel, Jianghong Luo, Luca Blessent, Tao Luo, Junyi Li
  • Patent number: 11310145
    Abstract: A disclosed method may include (1) identifying, by a PE router, a conditional advertisement policy that requires installation of at least one address of an active service appliance within a routing table to trigger advertising a route for the active service appliance to one or more additional PE routers, (2) inspecting the routing table for the installation of the address of the active service appliance, (3) determining, based at least in part on the inspection, that the address of the active service appliance is installed in the routing table, (4) determining that the PE router has satisfied the conditional advertisement policy due at least in part to the address of the active service appliance being installed in the routing table, and then in response, (5) directing the PE router to advertise the route to the additional PE routers. Various other apparatuses, systems, and methods are also disclosed.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: April 19, 2022
    Inventors: Wen Lin, John E. Drake
  • Patent number: 11310013
    Abstract: Methods, systems, and devices for wireless communication are described. A base station and user equipment (UE) may use subframe configurations that include dynamically scheduled channel state information reference signal (CSI-RS) symbols. For example, a base station may identify a subframe configuration that includes one or more sets of CSI-RS symbols of a subframe. The base station may indicate to a UE whether sets of CSI-RS symbols may be enabled or disabled during the subframe. The UE may receive multiple CSI-RSs at different locations within the subframe as indicated by the base station, and transmit CSI feedback to the base station based on at least one of the received CSI-RSs. In some examples, multiple base stations may coordinate the use of subframe configurations that include CSI-RS symbols that may be enabled or disabled.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: April 19, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Tao Luo, Sundar Subramanian, Bilal Sadiq, Juergen Cezanne, Junyi Li
  • Patent number: 11304114
    Abstract: A method for congestion control at an eNodeB is described, comprising detecting congestion at an eNodeB and entering a congestion control mode, receiving, at the eNodeB, a new user equipment (UE) connection request that contains a radio resource control (RRC) establishment cause, and using the RRC establishment cause for identifying a congestion management strategy, the congestion management strategy comprising one of initiating a handover for an existing LTE bearer, or redirecting the new UE connection request to a 3G nodeB.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: April 12, 2022
    Assignee: Parallel Wireless, Inc.
    Inventor: Yang Cao
  • Patent number: 11296972
    Abstract: A method implemented in a network device to enable scalable network path tracing. The method includes receiving a data packet with operations, administration and maintenance (OAM) information, updating a previous node identifier field in the OAM information, updating a current node identifier field in the OAM information, and sending a copy of the updated data packet with OAM information to a collector to build a packet trace.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: April 5, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Ashutosh Bisht, Joel Halpern
  • Patent number: 11296854
    Abstract: A system employing RE mapping for efficient use of the downlink control channel is provided for a wireless communication system. In one example, the system operations can comprise selecting index information corresponding to a resource element mapping pattern of a group of resource element mapping patterns, wherein the group of resource element mapping patterns is associated with a mobile device of a group of mobile devices, wherein the resource element mapping pattern is a two-dimensional mapping pattern comprising associated control channel symbol locations on a first axis and associated subcarrier locations on a second axis, and wherein the index information is an index of a group of indices associated with respective ones of the group of resource element mapping patterns; and transmitting the index information to the mobile device to inform the mobile device of a control channel symbol location at which data can be transmitted.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: April 5, 2022
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: SaiRamesh Nammi, Xiaoyi Wang
  • Patent number: 11290361
    Abstract: A device includes a programmable passive measurement hardware engine, a programmable active measurement hardware engine, and a configuration engine. The programmable passive measurement hardware engine is configured to collect statistical data, from data transmission at a network line rate, used for network measurement. The programmable active measurement hardware engine is configured to generate probe packets and wherein the programmable active measurement hardware engine is further configured to collect responses to the generated probe packets, wherein the collected responses are used for the network measurement. The configuration engine is configured to receive data settings and wherein the configuration engine is further configured to program the programmable passive measurement hardware engine and the programmable active measurement hardware engine with the received data settings.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: March 29, 2022
    Assignee: XILINX, INC.
    Inventors: Chengchen Hu, Ji Yang, Yan Zhang, Gordon J. Brebner, Siyi Qiao
  • Patent number: 11290375
    Abstract: Embodiments of the invention relate to computerized systems and computerized methods configured to optimize data transmission paths in a large-scale computerized network relative to reliability and bandwidth requirements. Embodiments of the invention further relate to computerized systems and methods that direct and control the physical adjustments to data transmission paths in a large-scale network's composition of computerized data transmission nodes in order to limit data end-to-end transmission delay in a computerized network to a delay within a calculated worst-case delay bound.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: March 29, 2022
    Assignee: RISE Research Institutes of Sweden AB
    Inventors: Shaoteng Liu, Rebecca Steinert, Dejan Kostic
  • Patent number: 11277335
    Abstract: An apparatus comprises at least one processing device that includes a processor coupled to a memory. The processing device is configured to control delivery of input-output (IO) operations from a host device to at least one storage system over selected ones of a plurality of paths through a network, wherein the paths are associated with respective initiator-target pairs, the initiators being implemented on the host device and the targets being implemented on the storage system. The processing device is further configured to identify one or more of the plurality of paths that each exhibits at least a threshold amount of mismatch between a negotiated rate of its initiator and a negotiated rate of its target, and to modify path selection in the host device to at least temporarily avoid selecting the one or more identified paths. The processing device illustratively comprises at least a portion of the host device.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: March 15, 2022
    Assignee: EMC IP Holding Company LLC
    Inventors: Vinay G. Rao, Sanjib Mallick, Arieh Don
  • Patent number: 11265245
    Abstract: A label switching router for a switching network configured for source routing can be configured to modify one or more reported properties of a link associated with that router based on one or more link quality metrics. For example, a router can include a link with available bandwidth of 10 Gbps, a value that can be used by a headend when evaluating nodes of the network against a set of constraints required by a particular requested connection or tunnel. A link of that router may exhibit an increased bit error rate which can be used by the label switching router to artificially deflate available bandwidth, thereby reducing the number of label switching paths including the router are selected by the headend.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: March 1, 2022
    Assignee: T-MOBILE USA, INC.
    Inventor: Cameron Byrne
  • Patent number: 11265241
    Abstract: A path detection method and apparatus for forwarding at least two layers of labels includes generating, by a first network device, a first request packet used for path detection, where the first request packet includes a label stack and a time to live (TTL), and an initial quantity of layers of the label stack matches an initial value of the TTL, and sending the first request packet, where the first request packet instructs a second network device to send a first response packet to the first network device when the TTL is 0 after being reduced by 1, and the first response packet reaches the first network device through an internet protocol route.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: March 1, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Qing Miao, Yongkang Zhang, Ranxiao Zhao, Ting Hua, Yanfeng Zhang
  • Patent number: 11259354
    Abstract: Apparatuses, systems, and methods for refreshing a GUTI of a UE. The UE may receive a GUTI from an AMF as part of a registration process. After a timer has expired, the UE may receive a new GUTI from the AMF. The timer may be provided by the UE as a request for use by the AMF. Alternatively, the timer may be used by the UE and the UE may request the new GUTI upon expiry of the timer, e.g., using an existing message or a new message, as desired.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: February 22, 2022
    Assignee: Apple Inc.
    Inventors: Shivani Suresh Babu, Lakshmi N. Kavuri, Krisztian Kiss
  • Patent number: 11251991
    Abstract: A communication system includes master and slave devices connectable to each other and forming a ring communication path. The master device outputs management data to manage communication along the ring communication path in a CW and CCW directions and receives the management data in the CW direction and in the CCW direction, and outputs, in the CW direction and in the CCW direction, control data to be used by the slave device to control equipment. The slave device acquires a history of transmission of the management data output from the master device and received by the slave device in the CW direction and in the CCW direction, and processes, based on the acquired history, one of the control data output from the master device in the CW direction and the control data output from the master device in the CCW direction to control the equipment.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: February 15, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Atsushi Kajino
  • Patent number: 11252708
    Abstract: The present invention relates to reporting the channel state information in a communication system. The channel state information is reported from the user terminal to a base station. Accordingly, the user terminal determines a first channel state information value from a first set of values (levels) and a second channel state information value from another set of values, preferably a larger set of values. Then a difference or other relative measure is calculated between the first and the second channel state information value and transmitted to the base station.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: February 15, 2022
    Assignee: Sun Patent Trust
    Inventors: Alexander Golitschek Edler von Elbwart, Masayuki Hoshino
  • Patent number: 11245615
    Abstract: In a method, a controller sends a first route update packet including a first route to a first forwarding device, so that the first forwarding device sends a third route update packet including a third route to at least one target forwarding device; a second forwarding device receives the third route update packet, determines a target link from the first forwarding device to the second forwarding device, and sends, based on a monitored state of the target link, a second route update packet including a second route and a target field to the controller; and the controller determines the state of the target link based on the target field in the second route update packet.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: February 8, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Heyang Liu, Qinghua Yan, Hewen Zheng, Tao Ma, Jinfeng Yan, Xinggui Wu
  • Patent number: 11245624
    Abstract: Systems and methods are provided herein for implementing multi-table OpenFlow flows that have combinations of packet edits. This may be accomplished by a network device receiving a first flow entry with a first set of actions to be installed into a flow table. The network device may determine that the first set of actions includes edits to a plurality of fields of a matched data packet. In response, the network device may change the first set of actions of the first flow entry to edit a first field of the data packet and create a second flow entry with a second set of actions to edit a second field of the data packet. The network device may install the first and second flow entries into one or more flow tables of the network device.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: February 8, 2022
    Assignee: ARISTA NETWORKS, INC.
    Inventors: Joseph Olakangil, Nitin Karkhanis, Anuraag Mittal, Purushothaman Nandakumaran, Manjula Gopalakrishnan
  • Patent number: 11245569
    Abstract: A method and system for adding a notification to an error message. A first node and a second node are positioned in a communication network, and the first node is different from the second node. The first node is configured to process a network message before sending the network message to the second node. The first node encounters an error when processing the network message, and, before sending the network message to the second node, writes a reason of the error in a header section of the network message. The first node is configured to send the network message to the second node with the header section.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: February 8, 2022
    Assignee: T-Mobile USA, Inc.
    Inventor: Mayank Kaul
  • Patent number: 11243798
    Abstract: This disclosure describes systems, methods, and apparatuses related to network function virtualization infrastructure (NFVI) performance. An apparatus may receive performance data from a network function virtualization infrastructure (NFVI) associated with one or more virtualized resources (VRs) of the NFVI. The apparatus may determine a collection method based on the received performance data. The apparatus may determine a performance measurement associated with the collection method. The apparatus may perform the performance measurement using the received performance data and the collection method. The apparatus may generate one or more outputs based on the performance measurement. The apparatus may cause to send the one or more outputs to a VNF manager (VNFM).
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: February 8, 2022
    Assignee: Apple Inc.
    Inventor: Joey Chou
  • Patent number: 11240140
    Abstract: The invention is directed to a computer-implemented system and method for transmitting data from a first node to a second node of a source-selected path routing network. In said system and method according to the present invention, a first data packet is received at the first node, wherein said data packet was sent from a source node according to next-hop routing. Subsequently, at least part of the data contained in the data packet is transmitted from the first node to the second node according to source-selected path routing. Finally, the data received at the second node is transmitted to a destination node according to next-hop routing.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: February 1, 2022
    Assignee: Anapaya Systems AG
    Inventors: Samuel Hitz, Stephen Shirley, Sergiu Costea