Patents Assigned to FutureWei Technologies
  • DECODING PROCEDURES IN SYSTEMS WITH CODEBLOCK SEGMENTATION
    Publication number: 20170331591
    Abstract: The disclosure relates to a method for decoding a transport block encoded with multiple codeblock segments. User equipment determines whether to decode one of a transport block cyclic redundancy check (CRC) and a codeblock segment CRC based on a speed of user equipment. In response to the speed of the user equipment being greater than a threshold, the user equipment decodes the transport block CRC and generates an acknowledgement (ACK)/non-acknowledgement (NAK). In response to the speed of the UE being less than or equal to the threshold, during a first data transmission, the user equipment decodes the codeblock segment CRC for each of the multiple codeblock segments and generates the ACK/NAK. During a second and latter data transmissions, the user equipment decodes the codeblock segment CRC for each of the multiple codeblock segments that failed in the first data transmission and generates the ACK/NAK.
    Type: Application
    Filed: May 11, 2016
    Publication date: November 16, 2017
    Applicant: Futurewei Technologies, Inc.
    Inventors: SaiRamesh Nammi, Xiao-Feng Qi
  • High current, low equivalent series resistance printed circuit board coil for power transfer application
    Patent number: 9818527
    Abstract: An apparatus for a multilayer printed circuit board (PCB) coil, comprising: a first coil layer of a PCB; a plurality of vias coupled to and distributed to cover substantially the surface of the first coil layer within the PCB; and a second coil layer of the PCB and coupled to the vias to cover substantially the surface of the second coil layer, wherein the vias are positioned between the first coil layer and the second coil layer and enable substantially high current and low equivalent series resistance (ESR) for the multilayer PCB coil.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: November 14, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventor: Jorge Zabaco
  • Low-complexity multi-symbol log-likelihood ratio (LLR) calculation
    Patent number: 9819423
    Abstract: An apparatus comprising a receiver configured to receive a super-symbol comprising a first modulation symbol and a second modulation symbol, wherein the first modulation symbol comprises a first modulation format, and wherein the second modulation symbol comprises a second modulation format, and a processor coupled to the receiver and configured to select, for the first modulation symbol, a first nearest candidate symbol from a first set of candidate symbols associated with the first modulation format, select, for the second modulation symbol, a second nearest candidate symbol independent of the first nearest candidate symbol from a second set of candidate symbols associated with the second modulation format, and determine a soft decision value for a first hit in the super-symbol according to the first nearest candidate symbol and the second nearest candidate symbol.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: November 14, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Clarence Kan, Wei-Ren Peng, Yan Cui
  • Open shortest path first for temporal tunnel services
    Patent number: 9819580
    Abstract: A network element (NE) in a network, comprising a memory configured to store time-based traffic engineering (TE) information associated with network resource reservations on a link attached to the NE in a series of time intervals each having a predetermined start time and a predetermined end time, and a processor coupled to the memory and configured to reserve, at a first current time, a network resource for a temporal tunnel service (TTS) on the link to carry traffic during a scheduled time interval subsequent to the first current time, wherein the scheduled time interval comprises a scheduled start time and a scheduled end time, and update, at the first current time, the time-based TE information in the scheduled time interval according to the network resource reserved to produce a first updated TE information in the scheduled time interval.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: November 14, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Huaimo Chen, Renwei Li
  • Rogue optical network unit mitigation in passive optical networks
    Patent number: 9819437
    Abstract: An optical line terminal (OLT) comprises a target OLT channel termination (CT), and a source OLT CT in communication with the target OLT CT, wherein the source OLT CT is configured to exchange tuning messages with the target OLT CT to initiate upstream wavelength tuning of an optical network unit (ONU), wherein the source OLT CT is configured to transmit a tuning request to the ONU after the tuning messages have been exchanged and to receive a tuning acknowledgement message from the ONU indicating that the tuning request will be executed, wherein the source OLT CT is configured to transmit a broadcast notification message to all OLT CTs within the OLT, except for the source OLT CT, after receipt of the tuning acknowledge message from the ONU, and wherein the broadcast notification message includes a tuning time of the ONU.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: November 14, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Bo Gao, Yuanqiu Luo, Frank Effenberger, Jianhe Gao
  • Carrier density-based tunable filter
    Patent number: 9817251
    Abstract: An optical filter comprising a first distributed Bragg reflector (DBR) layer, a second DBR layer, and an intrinsic semiconductor layer positioned between the first DBR layer and the second DBR layer, with the intrinsic semiconductor layer providing a passband wavelength for the optical filter based on a carrier density of the intrinsic semiconductor layer.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: November 14, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Jianmin Gong, Xuejin Yan, Dekun Liu, Liqiang Yu, Shengping Li, Jing Hu
  • Color corrected high resolution imaging
    Patent number: 9813622
    Abstract: A high resolution imaging system includes an imaging camera array creating a sets or frames of array images of a scene and a reference camera creating reference images of the same scene. A synchronization controller coordinates imaging of the scene by the imaging camera array and the reference camera. An image processor merges the sets of array images into high resolution images and apply a color correction to the high resolution images based on reference images. Color correction can be performed on the merged high resolution image or on individual array images prior to merger into the high resolution image.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: November 7, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Dong-Qing Zhang, Radhakrishna Dasari, Jie Hu, John Wus
  • Zero voltage switching detection apparatus and method
    Patent number: 9812968
    Abstract: A converter comprises a switch network coupled to a power source, wherein the switch network comprises a plurality of power switches, a magnetic device coupled to the switch network, a detector coupled to the magnetic device through a magnetic coupling and a control circuit configured to receive a zero voltage switching signal from the detector and adjust gate drive signals of the power switches based upon the zero voltage switching signal.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: November 7, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Jinbo Huang, Xujun Liu, Dianbo Fu, Liming Ye, Heping Dai, Daoshen Chen
  • Differential pulse code modulation intra prediction for high efficiency video coding
    Patent number: 9813733
    Abstract: A video codec including a memory and a processor operably coupled to the memory. The processor is configured to compute a reconstructed pixel based on a residual pixel and a first prediction pixel and compute a second prediction pixel in a directional intra prediction mode based on the reconstructed pixel, where the first and second prediction pixels are located in a same block of a video frame. A method for intra prediction including computing a prediction pixel adaptively based on a plurality of reconstructed neighboring pixels, where a distance between the prediction pixel and each of the plurality of reconstructed neighboring pixels is one.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: November 7, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Wen Gao, Minqiang Jiang, Ye He, Jin Song, Haoping Yu
  • Resonant converters with an improved voltage regulation range
    Patent number: 9812977
    Abstract: A method comprises determining an operating mode based upon an input voltage and an output voltage of a resonant converter, wherein the resonant converter comprises a switch network coupled to an input dc power source, a resonant tank coupled to the switch network and a transformer coupled between the resonant tank and a secondary rectifier, wherein the secondary rectifier is a full-bridge rectifier, configuring the switch network to operate at a buck converter mode in response to a first input voltage and configuring the secondary rectifier to operate at a boost converter mode in response to a second input voltage, wherein the first voltage is higher than the output voltage and the second voltage is lower than the output voltage.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: November 7, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Liming Ye, Heping Dai, Dianbo Fu, Daoshen Chen
  • LINK ADAPTATION IN GRANT-FREE MULTIPLE ACCESS SYSTEMS
    Publication number: 20170318604
    Abstract: A BS determines an amount of resource overloading for a contention transmission unit (CTU) access region associated with a grant-free uplink transmission scheme in a multiple access system. The BS determines a modulation and coding scheme (MCS) limit indicating a maximum MCS level for the CTU access region. The BS sends the MCS limit to a plurality of user equipments (UEs) associated with the first CTU access region. A UE receives from the base station the MCS limit and determines a first MCS index within the MCS limit for a first uplink transmission. The UE sends the first uplink transmission to the base station using a CTU in the CTU access region. The first uplink transmission includes user data and the first MCS index determined at the first UE.
    Type: Application
    Filed: July 18, 2017
    Publication date: November 2, 2017
    Applicant: Futurewei Technologies, Inc.
    Inventors: Bin Liu, Richard Stirling-Gallacher, Jian Wang
  • Optical receiver with optical transmitter-specific dispersion post-compensation
    Patent number: 9806813
    Abstract: An apparatus comprising a frontend configured to convert an optical IM signal associated with a remote optical transmitter into a plurality of analog electrical signals, determine a plurality of DC offsets for the analog electrical signals, remove the DC offsets from the analog electrical signals to produce a plurality of DC-free analog signals, and convert the DC-free analog signals into a plurality of DC-free digital signals, and a DSP unit coupled to the frontend and configured to perform fiber dispersion compensation on the DC-free digital signals according to a dispersion value associated with the remote optical transmitter to produce a plurality of DC-free compensated digital signals, and add the DC offsets to the compensated digital signals to produce a plurality of DC-restored compensated digital signals.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: October 31, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Xiang Liu, Frank Effenberger
  • Noise cancellation system
    Patent number: 9806825
    Abstract: A noise cancellation system comprises an I-channel mixer configured to receive a radio frequency signal from an antenna and an intermediate frequency signal from a local oscillator, a Q-channel mixer configured to receive the radio frequency signal from the antenna and a phase-shifted intermediate frequency signal from the local oscillator, a first noise cancellation apparatus connected with the I-channel mixer, wherein an I-channel differential mode second-order intermodulation component and an I-channel common mode second-order intermodulation component cancel each other in the first noise cancellation apparatus and a second noise cancellation apparatus connected with the Q-channel mixer, wherein a Q-channel differential mode second-order intermodulation component and a Q-channel common mode second-order intermodulation component cancel each other in the second noise cancellation apparatus.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: October 31, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Ping Yin, Robert Irvine, Seong-Mo Yim, Yusong Chi, Chengfang Liao, Feng Wang, Eric Sung
  • Method and apparatus for reducing response time in information-centric networks
    Patent number: 9806987
    Abstract: A method for reducing response times in an information-centric network includes receiving an indication from an ingress node of a content object entering a network, the content object associated with a new delivery flow through the network. An egress node in the network for the content object and a size of the content object are identified. A backlog and bandwidth for the new delivery flow is determined based in part on the size of the content object. Backlogs and bandwidths for existing delivery flows in the network are determined. A set of candidate paths in the network for the new delivery flow from the ingress node to the egress node is determined. For each candidate path, a total response time is estimated for completion of all delivery flows for each candidate path based on the backlog and bandwidth. The candidate path having the lowest total response time is selected for the new delivery flow.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: October 31, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Serhat Nazim Avci, Cedric Westphal
  • Re-modulation crosstalk and intensity noise cancellation in wavelength-division multiplexing (WDM) passive optical networks (PONs)
    Patent number: 9806816
    Abstract: An apparatus comprising a signal generator configured to produce a modulation signal, a filter coupled to the signal generator and configured to filter the modulation signal to produce a cancellation signal, and a reflective semiconductor optical amplifier (RSOA) coupled to the signal generator and the filter, wherein the RSOA is configured to generate an optical signal according to a difference between the modulation signal and the cancellation signal and transmit the optical signal towards a partial reflection mirror (PRM).
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: October 31, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventor: Ning Cheng
  • Boost converter and method
    Patent number: 9806601
    Abstract: A converter comprises a first switch, a second switch, a first blocking device and a second blocking device connected in series between two terminals of an output capacitor, an inductor coupled between a dc input source and a common node of the second switch and the first blocking device and a capacitor coupled between a common node of the first switch and the second switch, and a common node of the first blocking device and the second blocking device, wherein a voltage across the capacitor is configured to be adjustable through adjusting duty cycles of the first switch and the second switch.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: October 31, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventor: Dianbo Fu
  • Soft switching inverter device and method
    Patent number: 9806637
    Abstract: An inverter comprises a first switch coupled to an input of an output filter and a positive dc bus, a second switch coupled to the input of the output filter and a negative dc bus, a first freewheeling apparatus coupled to the first switch, the second switch and ground, a first soft switching network coupled to the first freewheeling apparatus and the first switch, wherein the first soft switching network is configured such that the first switch is of a first zero voltage transition during a turn-on process of the first switch and a second soft switching network coupled to the first freewheeling apparatus and the second switch, wherein the second soft switching network is configured such that the second switch is of a second zero voltage transition during a turn-on process of the second switch.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: October 31, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventor: Dianbo Fu
  • Simplification of mode dependent intra smoothing
    Patent number: 9807385
    Abstract: An apparatus comprising a processor configured to determine whether to apply an intra smoothing filter for a prediction unit (PU) based on a lookup table (LUT), wherein the LUT comprises data indicating the intra smoothing filter should not be applied for any PU with a block size of 8×8 pixels and associated with directional prediction mode. The disclosure also includes a method comprising generating reference samples, determining a size of a PU block, and selecting the reference samples based on PU block size, wherein filtered reference samples are not selected for PU blocks with a size of 8×8 pixels and associated with directional prediction mode.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: October 31, 2017
    Assignees: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Guichun Li, Lingzhi Liu, Nam Ling, Jianhua Zheng, Chen-Xiong Zhang, Li Song
  • Multilevel inverter device and method
    Patent number: 9806529
    Abstract: An inverter comprises a first boost apparatus having an input coupled to a positive dc bus, a second boost apparatus having an input coupled to a negative dc bus, a first switch coupled to an input of an L-C filter and the first boost apparatus, a second switch coupled to the input of the L-C filter and the second boost apparatus, a third switch coupled between the positive dc bus and the first switch, wherein a common node of the first switch and the third switch is directly connected to an output of the first boost apparatus, a fourth switch coupled between the negative dc bus and the second switch, wherein a common node of the fourth switch and the second switch is directly connected to an output of the second boost apparatus and an isolation switch coupled between the input of the L-C filter and ground.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: October 31, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Dianbo Fu, Bo He, Quan Li
  • MAKING GRAPH PATTERN QUERIES BOUNDED IN BIG GRAPHS
    Publication number: 20170308620
    Abstract: A processor executes instructions stored in non-transitory memory storage to receive a pattern query for a graph and determine a set of access constraints corresponding to the pattern query. A determination is made whether the pattern query is effectively bounded under the set of access constraints. A query plan is formed to retrieve a subgraph of the graph when the pattern query is effectively bounded under the set of access constraints. The answer to the pattern query is obtained by accessing the at least one subgraph in response to the query plan.
    Type: Application
    Filed: April 21, 2016
    Publication date: October 26, 2017
    Applicant: Futurewei Technologies, Inc.
    Inventors: Yang Cao, Wenfei Fan, Jinpeng Huai