Patents Examined by Jean B. Corrielus
  • Patent number: 10382108
    Abstract: A method and a device for configuring and determining a code superposition-based multiuser encoding mode are provided. The configuring method includes steps of: determining, by a network device, UEs by which an identical transmission resource is to be multiplexed; and configuring, by the network device, different columns in a preconfigured encoding matrix formed through multiuser code superposition for the UEs, so as to enable each UE to transmit data in accordance with an encoding mode corresponding to the column configured by the network device, at least two columns in the encoding matrix having different diversity orders.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: August 13, 2019
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Shaoli Kang, Fei Qin, Xiaoming Dai, Ying Peng
  • Patent number: 10379162
    Abstract: A method for operating a data processing system to compute the response of a DUT to a modulated input signal is disclosed. The method includes determining a set of parameters for a first model of the DUT from a plurality of measurements of output values from the DUT, each output value includes a measurement of a gain and phase shift provided by the DUT when the DUT is stimulated with a single tone input signal having a frequency in a frequency range determined by the modulated signal. The method also determines a second model that characterizes noise generated by the DUT at the single tone input signals. A performance parameter for an output signal that would be obtained by applying the modulated input signal to an input of the DUT, and receiving the output of the DUT is then determined from the first and second models.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: August 13, 2019
    Assignee: Keysight Technologies, Inc.
    Inventors: Sho Okuyama, Mitsuru Yokoyama
  • Patent number: 10362604
    Abstract: This disclosure describes systems, methods, and devices related to reverse direction duration. A device may establish a multi-user multiple-input multiple-output (MU-MIMO) communication with one or more station devices. The device may determine a frame to be sent to the one or more station devices, wherein the frame includes at least one of a duration field or a reverse direction indication. The device may cause to send the frame to the one or more station devices.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: July 23, 2019
    Assignee: Intel IP Corporation
    Inventors: Ou Yang, Oren Kedem, Chittabrata Ghosh, Solomon Trainin, Carlos Cordeiro
  • Patent number: 10361891
    Abstract: Apparatus and methods may provide improved equalizer performance, e.g., for optical-fiber-based communication systems. A least-mean-square (LMS) equalizer may include a decision feedback path containing feedback carrier recovery (FBCR), which may have low latency, and which may thus enable high-speed tap updating in the equalizer. Feed-forward carrier recovery (FFCR) may be applied, in parallel with the FBCR, to provide equalizer output by compensating, e.g., for phase noise, with improved carrier recovery/compensation, versus using FBCR to generate the output.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: July 23, 2019
    Assignee: Infinera Corporation
    Inventors: Ahmed Awadalla, Han Henry Sun, Kuang-Tsan Wu
  • Patent number: 10355744
    Abstract: Provided is a feedline branching apparatus that makes it possible for additional submarine cables to be installed easily, and with which cost increases can be restricted. For these purposes, the feedline branching apparatus comprises a branching unit and an earth unit. First, second and third terminal stations are connected to the branching unit via first, second and third cables, respectively. When the first and second cables are normal, the branching unit connects a feedline of the first cable to a feedline of the second cable, thereby forming a feedline using a first current. If one of the first and second cables is faulty, the branching unit grounds the feedline of the one of the first and second cables, while connecting the feedline of the other cable to the earth unit. The earth unit grounds a feedline of the third cable, thereby forming a feedline using a second current.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: July 16, 2019
    Assignee: NEC CORPORATION
    Inventor: Shohei Yamaguchi
  • Patent number: 10348480
    Abstract: A receiver serial data streams generates a local timing reference clock from an approximate frequency reference clock by phase-aligning the local clock to transitions in the data stream. This process is commonly known as clock and data recovery (CDR). Certain transitions of the data signals are selected for use in phase-aligning the local clock, and certain transitions are ignored. Phase-error signals from multiple receivers receiving the multiple serial data streams are combined and used to make common phase adjustments to the frequency reference clock. These common adjustments track jitter that is common to the received data streams. Local adjustments that better align each respective local clock to the transitions of its respective serial data stream are made using a local phase-error signal. These local adjustments track jitter that is more unique to each of the respective serial data streams.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: July 9, 2019
    Assignee: Rambus Inc.
    Inventors: Masum Hossain, Nhat Nguyen, Yikui Jen Dong, Arash Zargaran-Yazd
  • Patent number: 10348534
    Abstract: A device includes a selection circuit that is configured to generate a bias level. The device also includes a combinational circuit coupled to the selection circuit. The combinational circuit is configured to generate a distortion correction factor used offset inter-symbol interference from a data stream on a distorted bit based on the bias level to generate a correction signal. The device additionally includes a latching element coupled to the combinational circuit and configured to receive the first correction signal.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: July 9, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Raghukiran Sreeramaneni, Jennifer E. Taylor
  • Patent number: 10340991
    Abstract: Embodiments herein relate to a method performed by a network node for determining a precoder for a transmission to a first wireless device in a wireless communications network. The network node obtains at least a Rank Indicator, RI, of the channel used for transmissions to the first wireless device. The network node also obtains information about a preferred interference subspace for the transmissions to the first wireless device from a second wireless device in the wireless communications network, wherein the second wireless device is interfered by the transmissions to the first wireless device. The network node determines the precoder for the transmission to the first wireless device based on the obtained information about a preferred interference subspace if the at least obtained RI of the channel fulfills a first threshold criterion. Embodiments of the network node are also described.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: July 2, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Magnus Thurfjell, Sara Sandberg, Fredrik Lindqvist
  • Patent number: 10341160
    Abstract: The embodiments of the disclosure introduce a novel receiver having a smart listening mode for reducing the current consumption of a receiver while waiting for a data packet. In the smart listening mode, the receiver temporarily disables one signal path of a quadrature signal (e.g., I or Q path) until the receiver detects an arrival of data packet via a second signal path of the quadrature signal. The receiver continuously monitors the enabled signal path for the incoming data packet via in-channel energy. After the incoming data packet is detected, it is further determined whether the incoming data packet is a valid data packet. If not, one of the signal paths would be disabled again. As a result, the current consumption of the receiver is reduced while waiting for an incoming data packet.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: July 2, 2019
    Assignee: ALi Corporation
    Inventor: Fabio Epifano
  • Patent number: 10333595
    Abstract: Reference signal and transmitter (Tx)/receiver (Rx) precoding for user equipment (UE) multiplexing in new radio (NR) shared spectrum networks is discussed. In certain reference signals, a base station may schedule multiple UEs for transmission of uplink reference signals within an identified subframe. The base station may transmit a reference signal configuration message, wherein the reference signal configuration message includes a transmission sequence identifier identifying a multiplexing for antenna ports assigned for transmission of the uplink reference signals. The multiplexing may be one or both of frequency divisional multiplexing (FDM) and time division multiplexing (TDM) over the identified subframe. Additional reference signals, transmit precoders may be identified by the base station based on channel inversion calculations of the channel matrix determined based on uplink reference signals.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: June 25, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Seyed Ali Akbar Fakoorian, Xiaoxia Zhang, Taesang Yoo, Siddhartha Mallik, Juan Montojo
  • Patent number: 10333751
    Abstract: Disclosed according to one embodiment of the present invention is a method whereby a first station (STA) transmits signals using dual carrier modulation (DCM) in a wireless LAN system, comprising: modulating HE-SIG B field information and/or data field information on a wireless frame transmitted by the first STA and transmitting same to a second STA, wherein in the case of modulating the HE-SIG B field information and/or the data field information in a BPSK mode, if a random symbol C1 among symbols modulated in the BPSK mode is mapped to a subcarrier K, a symbol formed by rotating the phase of the symbol C1 is mapped to a subcarrier K+N/2 in a repeating manner, wherein N corresponds to the number of subcarriers of a resource unit for transmitting the HE-SIG B field information and the data field information and K is a random integer equal to or less than N/2.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: June 25, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Dongguk Lim, Jinyoung Chun, Jinsoo Choi, Hangyu Cho, Jinmin Kim, Eunsung Park
  • Patent number: 10333764
    Abstract: A transmitter is provided to address transmitter non-idealities. The transmitter uses a series of envelope detectors to detect imbalances between an I branch and a Q branch of an I/Q modulator that is implemented as part of the transmitter's front end, and these detected imbalances may be compensated by pre-distorting digital baseband signals fed to the I branch and the Q branch. The transmitter may also use a series of envelope detectors to detect nonlinearities in one or more of the transmitter's amplification stages, and these detected nonlinearities may be compensated by modifying the baseband signals via a digital linearization pre-compensator. The transmitter may also support both implementations in either a time-switched or simultaneous manner, allowing for I/Q imbalances and nonlinearities to be addressed using a single transmitter design.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: June 25, 2019
    Assignee: Intel Corporation
    Inventor: David Arditti Ilitzky
  • Patent number: 10326518
    Abstract: Methods and systems of managing communications through a repeater between a gateway and a plurality of nodes in a long-range wireless wide area network include, in various independent aspects, joining the plurality of nodes to the network through the gateway by transmitting to a join server at least a portion of join request messages received from the plurality of nodes, receiving messages from the gateway and identifying associated nodes of the plurality of nodes to which those messages are then transmitted, and transmitting messages to the gateway with physical layer payloads corresponding to payloads of messages received from the plurality of nodes.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: June 18, 2019
    Assignee: Mueller International, LLC
    Inventors: Dale McLeod Magley, David Edwin Splitz
  • Patent number: 10326514
    Abstract: Disclosed herein are apparatuses, systems, and methods for reference signal design for initial acquisition, by receiving a first primary synchronization signal (PSS) and a first secondary synchronization signal (SSS) from a first transmit (Tx) beam, in first contiguous orthogonal frequency division multiplexing (OFDM) symbols of a downlink subframe. A UE can receive at least a second PSS and a second SSS from a second Tx beam in contiguous OFDM symbols of the downlink subframe. A UE can then detect beamforming reference signals (BRSs) corresponding to the first Tx beam and the second Tx beam, based on identification of physical cell ID information and timing information processed from the first PSS, the second PSS, the first SSS, and the second SSS. The UE can select the first Tx beam or the second Tx beam that was received with the highest power, based on the BRSs. Other embodiments are described.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: June 18, 2019
    Assignee: Intel IP Corporation
    Inventors: Gang Xiong, Huaning Niu, Yushu Zhang, Jong-Kae Fwu, Yuan Zhu, Ralf Matthias Bendlin
  • Patent number: 10320601
    Abstract: Disclosed herein is a station (STA) device of a wireless LAN (WLAN) system. The STA device includes a radio frequency (RF) unit sending and receiving a radio signal and a processor controlling the RF unit. The processor may generate a physical protocol data unit (PPDU) including a physical preamble and a data field and send the PPDU using the RF unit.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: June 11, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Wookbong Lee, Jinsoo Choi, Dongguk Lim, Jinyoung Chun, Hangyu Cho
  • Patent number: 10320450
    Abstract: There is provided an antenna arrangement for a radio transceiver device for simultaneous use of two polarization directions. The antenna arrangement comprises at least two baseband chains. The antenna arrangement further comprises a first set of antenna elements of a first polarization direction, and a second set of antenna elements of a second polarization direction. The antenna arrangement comprises an analog distribution network operatively connecting the at least two baseband chains to both sets of antenna elements. All of the baseband chains are operatively connected to each respective antenna element of the first set and to each respective antenna element of the second set via the analog distribution network.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: June 11, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Sven Petersson, Fredrik Athley, Andreas Nilsson
  • Patent number: 10312977
    Abstract: A receiver decodes received data streams based on a subset of candidate decoding constellation points. A first stage of a decoder of the receiver selects a subset of candidate decoding constellation points by identifying a decoded value for an initial data stream of the set of data streams. A second stage then applies MMSE error detection to each of the constellation points in the selected subset, and calculates an error metric based on the MMSE error detection results. The decoder selects the constellation points having the lowest error metrics, and uses the selected constellation points as an initial set of points for decoding the next data stream to be decoded.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: June 4, 2019
    Assignee: NXP USA, Inc.
    Inventors: Marius Octavian Arvinte, Wim Joseph Rouwet
  • Patent number: 10312981
    Abstract: Embodiments of user equipment (UE) and methods for codebook subsampling for enhanced 4TX codebooks in 3GPP LTE wireless networks are generally described herein. In some embodiments, a physical uplink control channel (PUCCH) is configured for transmission of channel state information (CSI) feedback including a rank indicator (RI) and a precoding matrix (W1). The rank indicator (RI) and a precoding matrix (W1) are jointly encoded and codebook subsampling is performed for the enhanced 4Tx codebook for at least one of: PUCCH report type 5 (RI/1st PMI) in PUCCH 1-1 submode 1; PUCCH report type 2c (CQI/1st PMI/2nd PMI) in PUCCH 1-1 submode 2; and PUCCH report type 1a (subband CQI/2nd PMI) in PUCCH 2-1.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: June 4, 2019
    Assignee: Intel IP Corporation
    Inventors: Xiaogang Chen, Yuan Zhu, Qinghua Li
  • Patent number: 10305577
    Abstract: A high-linearity linearizer system includes a multi-stage linearizer circuit formed by cascading multiple linearizer circuits. The multi-stage linearizer circuit is configured to pre-distort an input signal to generate a pre-distorted signal. A non-linear high-power amplifier (HPA) having non-linear characteristics is coupled to the multi-stage linearizer circuit and is configured to amplify the pre-distorted signal. Pre-distortion characteristics of the multi-stage linearizer circuit are configured to counter the non-linear characteristics of the non-linear HPA and to compensate a non-linearity of the non-linear HPA to achieve a desired level of linearity.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: May 28, 2019
    Assignee: Lockheed Martin Corporation
    Inventors: Marc Ronald Bjorkman, Kim Thomas Lancaster, Douglas V. McKinnon, Novellone Rozario, Jason Michael Teixeira
  • Patent number: 10298070
    Abstract: A power transmission apparatus includes an inverter circuit, a power transmission antenna that wirelessly transmits alternating current power output from the inverter circuit, and a power transmission control circuit that causes the inverter circuit to output the alternating current power. The power transmission control circuit causes the inverter circuit to output the alternating current power as binary communication data by varying frequency of the alternating current power output from the inverter circuit between a first frequency and a second frequency, and performs amplitude control for eliminating a difference between amplitude of voltage of the alternating current power at a time when the frequency is the first frequency and amplitude of the voltage of the alternating current power at a time when the frequency is the second frequency.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: May 21, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tsutomu Sakata, Hiroshi Kanno