Patents Assigned to FutureWei Technologies
  • System and method for transmitting a synchronization signal
    Patent number: 9615341
    Abstract: A method for device-to-device (D2D) communications includes generating, by a synchronization source, a primary device-to-device synchronization signal that is different from a primary synchronization signal (PSS) sent by an Evolved NodeB (eNodeB) and an existing uplink (UL) signal sent by device-to-device communications devices, and transmitting, by the synchronization source, the primary device-to-device synchronization signal in a single carrier frequency division multiple access (SC-FDMA) waveform.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: April 4, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Philippe Sartori, Liang Xia, Qiang Li, Branislav Popovic, Fredrik Berggren
  • Parallel hybrid converter apparatus and method
    Patent number: 9614453
    Abstract: An apparatus comprises an isolated power converter coupled between an input dc power source, wherein the isolated power converter comprises a first switch network coupled to a first transformer winding through a first resonant tank and a second switch network coupled to a second transformer winding through a second resonant tank and a dc/dc converter coupled to the second switch network.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: April 4, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Heping Dai, Liming Ye, Dianbo Fu, Daoshen Chen
  • Intelligent file pre-fetch based on access patterns
    Patent number: 9614925
    Abstract: Files and/or file updates can be pre-fetched from a server to reduce file access periods as well as shift network usage from high traffic periods to low traffic periods. For example, a file that was previously expelled from a cache can be pre-fetched from the server prior to a future period in which a client is likely to re-access the file. As another example, a file update for a file that remains stored in the cache can be pre-fetched from the server prior to a future period in which a client is likely to re-access the file. The file update may then be used to update the stored file. The file and/or updated-file can then be provided directly from the cache to the client when the client re-accesses the file.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: April 4, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Vaishnav Kovvuri, Jim Zhao
  • Control and management of power saving link states in vectored TDD transmission systems
    Patent number: 9614581
    Abstract: An apparatus comprising a first transceiver unit (TU) for coupling to a first subscriber line, at least one next TU for coupling to at least one next subscriber line, and a processor coupled to the first TU and the at least one next TU, wherein the processor is configured to determine a link state in which data transmission is disabled for the duration of one or more symbols in a superframe, instruct the first TU to operate in the determined link state, and coordinate data transmission by the first TU and the at least one next TU to avoid an increase of crosstalk from the first line to the at least one next subscriber line due to the first TU operating in the determined link state.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: April 4, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Dong Wei, Jie Lv, Jianhua Liu
  • Supporting multiple virtual switches on a single host
    Patent number: 9614789
    Abstract: System and method for supporting multiple vSwitches on a single host server. In one aspect, embodiments according to the present disclosure include a system and method for supporting multiple vSwitches on a single host server. In one aspect, a set of packet processor threads are instantiated to process data packets on behalf of all vSwitches deployed on the host server. For a data packet received at a port of the host server, a packet processor determines the datapath based on a mapping table and processes the packet according to the rules defined for that datapath. In one aspect, ports (physical and/or virtual) are able to be configured to specified vSwitches dynamically.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: April 4, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Xiaogang Zhu, Arularasi Sivasankaran, Jiafeng Zhu, Liufei Wen, Yanlan Wei
  • Transconductance optimization using feedback-balun-transformer with inductance degeneration combinations
    Patent number: 9608568
    Abstract: Disclosed are apparatuses and methods to overcome technology limitations to achieve linearity and efficiency performance suitable for practical wireless communications systems. In an embodiment, an amplifier is provided that superimposes the transconductance from a common source amplifier with inductor degeneration with the transconductance from a common source amplifier without degeneration. In an embodiment, an amplifier is provided having a feedback-balun-transformer that provides electro-magnetic coupling between primary, secondary, and negative feedback degeneration inductors and a differential to single-ended conversion output.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: March 28, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Yoonhyuk Ro, Xuya Qiu, Jamil Forrester
  • Apparatus and scheme for IO-pin-less calibration or trimming of on-chip regulators
    Patent number: 9608605
    Abstract: A method and apparatus for measuring a voltage are disclosed. In an embodiment a method for controlling a supply voltage includes providing a first periodic signal by providing a reference voltage to an oscillator, providing a second periodic signal by providing the supply voltage (VOUT) of a voltage source to the oscillator, providing a first count by measuring first periods of the first periodic signal, providing a second count by measuring second periods of the second periodic signal and comparing the first count with the second count.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: March 28, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Wei Chen, Tongzeng Yang, Chukwuchebem Chinemelum Orakwue
  • Context-aware dynamic policy selection for load balancing behavior
    Patent number: 9602380
    Abstract: Dynamically updating load balancing policies based on operations, administration, maintenance, and provisioning (OAMP) data generated by a load balancing network may provide increased load balancing performance. As an example, an existing set of load-balancing policies can be dynamically modified based on OAMP data generated by load balancers and/or network elements. As another example, new load-balancing policies can be dynamically created based on the OAMP data. As yet another example, an updated set of load-balancing policies can be selected from a pool of policies based on OAMP data. Dynamically updating load balancing policies can be achieved using information model processing frameworks, such as the next generation directory enabled networks (DEN-ng) model.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: March 21, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventor: John Charles Strassner
  • System and method for power control command for device-to-device transmissions
    Patent number: 9603108
    Abstract: A transmit power control rule for device-to-device (D2D) transmissions may not be necessary during periods in which no uplink transmissions are scheduled to be received by an enhanced Node B base station (eNB). When uplink transmissions are not scheduled to be received by the eNB, the eNB may send a transmit power control (TPC) command to a D2D capable user equipment (D2D UE) that instructs the D2D UE to perform a D2D transmission at a pre-defined transmit power level (e.g., maximum transmit power level). When uplink transmissions are scheduled to be received the eNB, the eNB may send a TPC command to the D2D UE that instructs the D2D UE to perform a D2D transmission at a transmit power level defined by a power control rule.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: March 21, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Hossein Bagheri, Philippe Sartori, Mazin Al-Shalash, Anthony C. K. Soong
  • Operating states for D2D discovery
    Patent number: 9602997
    Abstract: A device is configured to perform a method of device-to-device (D2D) communication in a wireless communication network in accordance with a Long Term Evolution (LTE) standard. The method includes entering an RRC-Idle state or an RRC-Connected state. The method also includes transmitting, in the RRC-Idle state or RRC-Connected state, a D2D discovery signal for receipt by at least one second device in the network. The method further includes receiving, in the RRC-Idle state or RRC-Connected state, at least one D2D discovery signal from the at least one second device in the network.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: March 21, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Philippe Sartori, Hossein Bagheri, Vipul Desai, Anthony CK Soong, Mazin Al-Shalash
  • System and method for common control channels in a communications system
    Patent number: 9603034
    Abstract: A method for operating a communications controller includes selecting a search space configuration out of a set of candidate search space configurations for a user equipment served by the communications controller, wherein the search space configuration specifies one or more search spaces to be monitored out of a set of search spaces, and signaling the selected search space configuration to the user equipment.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: March 21, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Philippe Sartori, Jianghua Liu, Qiang Wu, Vipul Desai, Weimin Xiao, Brian Classon
  • System and method for content encryption in a key/value store
    Patent number: 9602280
    Abstract: System and method embodiments are provided for content encryption in a key/value store. The embodiments include encrypting both the key and value of client data blocks for storage so that the data can be retrieved reliability without compromising the key. An embodiment method includes obtaining a key from a data block comprising the key and a value, encrypting the key using a deterministic encryption algorithm with an encryption key to map the key to a cypher text in a one-to-one mapping, and encrypting the value using a second encryption algorithm to randomly map the value to a second cypher text. Encrypting both the key and the value provides more protection to the client data instead of encrypting only the value and leaving the key vulnerable without encryption. The encrypted key can also be protected from unauthorized access and from the owner of the database or the storage system.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: March 21, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Anthony Scarpino, James Hughes
  • Region guided and change tolerant fast shortest path algorithm and graph preprocessing framework
    Patent number: 9599483
    Abstract: A method for region guided and change tolerant fast shortest path determination and graph preprocessing for network management and control. In an embodiment, a method includes partitioning, by a network component, a plurality of network nodes into a plurality of regions, each network node belonging to one of the regions; identifying, by the network component, border nodes for each region, each border node in a region connecting to at least one border node in a connecting region; determining, by the network component, intervals between regions according to the border nodes, each interval comprising a minimum distance and a maximum distance between two regions; determining, by the network component, a path from a source node to a target node according to the intervals.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: March 21, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Feng Ye, Chen Tian, Liya Chen
  • Mode dependent intra smoothing filter table mapping methods for non-square prediction units
    Patent number: 9602839
    Abstract: An apparatus comprising a processor configured to determine whether to use an intra smoothing filter for a rectangular prediction unit (PU) based on a lookup table (LUT) used for square PUs, wherein a width of the rectangular PU is not equal to a height of the rectangular PU.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: March 21, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Guichun Li, Lingzhi Liu, Changcai Lai, Nam Ling, Jianhua Zheng, Chen-Xiong Zhang
  • Network topology of hierarchical ring with recursive shortcuts
    Patent number: 9600440
    Abstract: An interconnection system comprising a plurality of nodes, each comprising at least two ports, and a plurality of links configured to interconnect ports among the nodes to form a hierarchical multi-level ring topology, wherein the ring topology comprises a plurality of levels of rings including a base ring and at least two hierarchical shortcut rings, and wherein each node connected to a higher-level shortcut ring is also connected to all lower-level rings including the base ring.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: March 21, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Iulin Lih, William Lynch
  • METHOD AND APPARATUS FOR SCALABLE CONTENT ROUTING AND MOBILITY IN NAMED DATA NETWORKS
    Publication number: 20170078194
    Abstract: Various disclosed embodiments include methods, systems, and computer-readable media for named data network (NDN) inter/intra-domain mobility. A complete de-coupling of identity and addressing space is established. This provides separation of control and forwarding allowing rich policy based routing, using SDN principles, as well as policy based global resolution. In one embodiment, the de-coupling of identity from location is achieved by a changeable forwarding label field in a header that can have nodal/domain/global scope. This disclosure provides content routing/mobility to be handled with a high degree of flexibility. This disclosure also provides mobility as a service for a component of a name space.
    Type: Application
    Filed: November 23, 2016
    Publication date: March 16, 2017
    Applicant: Futurewei Technologies, Inc.
    Inventors: Ravishankar Ravindran, Guo-Qiang Wang, Xinwen Zhang, Asit Chakraborti
  • High efficiency high power density power architecture based on buck-boost regulators with a pass-through band
    Patent number: 9595870
    Abstract: A power system comprising a non-isolated voltage regulator configured to couple to an input voltage and produce an output voltage, wherein the non-isolated voltage regulator is in a power distribution system and configured to boost the input voltage when the input voltage is less than a minimum output voltage, to reduce the input voltage when the input voltage is greater than a maximum output voltage, and to pass-through the input voltage when the input voltage is greater than or equal to the minimum output voltage and less than or equal to the maximum output voltage.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: March 14, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Hengchun Mao, Dianbo Fu, Bing Cai
  • Secondary side hybrid converter apparatus and method
    Patent number: 9595877
    Abstract: An apparatus comprises an isolated power converter coupled to an input dc power source, wherein the isolated power converter comprises a primary switching network operating at a fixed switching frequency, a secondary resonant tank including a dc blocking capacitor and a rectifier having two input terminals coupled to the secondary resonant tank, an output capacitor coupled between a first output terminal of the rectifier and a load and a dc/dc converter coupled between a second output terminal of the rectifier and the load.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: March 14, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Heping Dai, Dianbo Fu, Liming Ye, Daoshen Chen
  • Multi-level inverter systems
    Patent number: 9595862
    Abstract: A system comprises a first T-type inverter and a second T-type inverter connected to a dc power source and a first winding of a transformer, wherein the second T-type inverter is configured to operate with a first phase shift from the first T-type inverter, a third T-type inverter and a fourth T-type inverter connected to the dc power source and a second winding of the transformer, wherein the fourth T-type inverter is configured to operate with a second phase shift from the third T-type inverter and a fifth T-type inverter and a sixth T-type inverter connected to the dc power source and a third winding of the transformer, wherein the sixth T-type inverter is configured to operate with a third phase shift from the fifth T-type inverter.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: March 14, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Dianbo Fu, Yunfeng Liu
  • Open loop digital PWM envelope tracking system with dynamic boosting
    Patent number: 9596110
    Abstract: A system, apparatus and method is described for dynamically boosting (increasing) the power supply voltage to an envelope tracking (ET) modulator within a transmitter system when the target/desired power amplifier voltage supply is above a predetermined threshold (e.g., equal to the available power supply of the system, such as a battery). By boosting the power input supply to the ET modulator, the modulated power supply provided to the power amplifier (PA) is also increased. This reduces or eliminates clipping that normally occurs when the target/desired PA supply voltage is greater than the available power supply voltage and reduces distortion in the transmitted signal.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: March 14, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Hong Jiang, Wael Al-Qaq, Robert Grant Irvine, Matthew M. Kostelnik, Zhihang Zhang