Patents Assigned to FutureWei Technologies
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • Using PCE as SDN controller
    Patent number: 9813333
    Abstract: Embodiments relate generally to systems and methods for transitioning a system from a tradition network to a Software Defined Network (SDN) enabled network. In some embodiments, the systems and methods may comprise the use of a Path Computation Element (PCE) as a central controller. Smooth transition between traditional network and the new SDN enabled network, especially from a cost impact assessment perspective, may be accomplished using the existing PCE components from the current network to function as the central controller of the SDN network is one choice, which not only achieves the goal of having a centralized controller to provide the functionalities needed for the central controller, but also leverages the existing PCE network components.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: November 7, 2017
    Assignee: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Qianglin Quintin Zhao, Katherine Zhao, Bisong Tao
  • 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
  • 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
  • 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
  • Heat spreader with thermally coductive foam core
    Patent number: 9813082
    Abstract: A heat spreader and a method for making a heat spreader are disclosed. In an embodiment the heat spreader includes an enclosure with a hollow core and a foam core located in the hollow core.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: November 7, 2017
    Assignee: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Mo Bai, Vadim Gektin
  • 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
  • System and method for clock spur artifact correction
    Patent number: 9806919
    Abstract: A method for clock spur artifact correction includes obtaining a plurality of switching stage input signals generated in accordance with an input signal level of an external amplifier, and adjusting the plurality of switching stage input signals such that a clock spur harmonic artifact is reduced. The clock spur harmonic artifact includes a first clock spur harmonic artifact generated in a plurality of external signal paths including external switching stages, and the adjusting the plurality of switching stage input signals includes one of: adjusting a duty ratio of one of the plurality of switching stage input signals in accordance with a gain mismatch between two of the external signal paths; and injecting a first Continuous Wave (CW) signal into the plurality of switching stage input signals in accordance with a previous amplitude of the first clock spur harmonic artifact.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: October 31, 2017
    Assignee: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Pallab Midya, Hong Jiang
  • 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
  • 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
  • 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
  • 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
  • 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
  • Apparatus and method for a molded plastic fin shell for electronic devices
    Patent number: 9802279
    Abstract: Embodiments are provided for using a molded thermal plastic fin shell as part of a heat sink design for electronic devices. The heat sink design also includes metal components in contact with the electronics components of the device and the thermal plastic fin shell. The thermal plastic fin shell serves both as part of the heat sink design to dissipate heat to the air and as a protective casing or packaging for the device. The heat is transferred from the electronics components or heat sources in the device to the heat sink metal components and hence to the thermal plastic fin shell in contact with the metal. The thermal plastic fin shell dissipates the heat into the surrounding air. The combination of metal and thermal plastic materials in the heat sink design combines both desired properties of high thermal conductivity and ease of manufacture.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: October 31, 2017
    Assignee: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Qian Han, Jun Yang, Xiaodu Shao