Patents Examined by Khai Tran
  • Patent number: 11509368
    Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may receive a request for beamforming information associated with line-of-sight (LoS) multiple input multiple output (MIMO) communication from a second wireless device. The first wireless device may generate a channel estimation matrix for a channel between rectangular antenna arrays of the respective wireless devices, the channel estimation matrix including one or more quadratic terms for the LoS MIMO communication. The first wireless device may generate a first sub-matrix and a second sub-matrix based on the channel estimation matrix. The first wireless device may transmit an indication of a set of precoders for the LoS MIMO communication, the set of precoders based on a symmetry associated with the first and second sub-matrices, and may receive the LoS MIMO communication from the second wireless device based on the set of precoders.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: November 22, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Naga Bhushan, Abdelrahman Mohamed Ahmed Mohamed Ibrahim, Pinar Sen, Renqiu Wang, Tingfang Ji, Krishna Kiran Mukkavilli
  • Patent number: 11509367
    Abstract: Methods, systems, and devices for wireless communications are described that provide for channel state information (CSI) feedback for multiple discrete Fourier transform (DFT) beams on multiple transmission layers. A user equipment (UE) may report a total number of non-zero power DFT beams across all of the transmission layers. The UE may be configured with a total number of leading beams (Ktotal) across all of the transmission layers for which to provide high quantization feedback. When the total number of non-zero DFT beams across all the transmission layers exceeds the configured total number of leading beams across all the transmission layers, the UE may report high-resolution quantization feedback for Ktotal non-zero power precoding coefficients having the highest amplitude coefficients, and may report low-resolution quantization feedback for the remaining non-zero power precoding coefficients. A base station may receive the CSI feedback to determine a precoding matrix.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: November 22, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Min Huang, Chao Wei, Chenxi Hao, Liangming Wu, Qiaoyu Li
  • Patent number: 11502648
    Abstract: Preventing RF signal distortion and signal error producing memory events in a Radio Frequency (RF) power amplifier (RFPA). An element, disposed prior to the Radio Frequency (RF) power amplifier (RFPA) in a signal path of a RF signal input to the RFPA, may enforce a maximum allowable amplitude in a high PAPR instantaneous high peak of the RF signal. An element may also increase or supplement a bias of the Radio Frequency (RF) power amplifier (RFPA) when a high PAPR instantaneous high peak is detected in the RF signal prior to receipt by the RFPA. Additionally, a first element operable detects when an instantaneous output voltage of the Radio Frequency (RF) power amplifier (RFPA) is below a predetermined voltage, and in response, a second element supplies additional current to prevent the output voltage of the RFPA from falling below a predetermined threshold voltage.
    Type: Grant
    Filed: July 5, 2021
    Date of Patent: November 15, 2022
    Assignee: Harmonic, Inc.
    Inventor: Adi Bonen
  • Patent number: 11496174
    Abstract: When the ultra-low power mm-scale sensor node does not have a crystal oscillator and phase-lock loop, it inevitably exhibits significant carrier frequency offset (CFO) and sampling frequency offset (SFO) with respect to the reference frequencies in the gateway. This disclosure enables efficient real-time calculation of accurate SFO and CFO at the gateway, thus the ultra-low power mm-scale sensor node can be realized without a costly and bulky clock reference crystal and also power-hungry phase lock loop. In the proposed system, the crystal-less sensor starts transmission with repetitive RF pulses with a constant interval, followed by the data payload using pulse-position modulation (PPM). A proposed algorithm uses a two-dimensional (2D) fast Fourier transform (FFT) based process that identifies the SFO and CFO at the same time to establish successful wireless communication between the gateway and crystal-less sensor nodes.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: November 8, 2022
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Hun-Seok Kim, Chin-Wei Hsu, David T. Blaauw, Benjamin Kempke
  • Patent number: 11489606
    Abstract: Calibration of devices communicating on a shared data bus may improve data integrity on the shared data bus by reducing duty cycle distortion. Duty cycle distortion may be reduced by adjusting timing of a transceiver in a device for communicating on the shared data bus using calibration codes. The calibration codes may be loaded into memory and used to reconfigure the transceiver timing on the shared data bus with reconfiguration occurring within one or more unit-intervals of time. The calibration code may be used, for example, to adjust a PMOS or NMOS trim circuit at the transceiver.
    Type: Grant
    Filed: January 15, 2021
    Date of Patent: November 1, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Anthony Louviere, John L. Melanson, Gabriel Vogel
  • Patent number: 11487311
    Abstract: A method for providing a jitter signal for modulating a switching frequency of a power switch for a power converter. The method comprising receiving a drive signal representative of the switching frequency of the power switch, detecting the switching frequency from the drive signal, determining if the switching frequency is less than a first threshold frequency, and modulating a frequency of the jitter signal in response to determining if the switching frequency is less than the first threshold frequency.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: November 1, 2022
    Assignee: Power Integrations, Inc.
    Inventors: Giao Minh Pham, Lance M. Wong
  • Patent number: 11483082
    Abstract: Methods, systems, and storage media are described for the Embodiments discussed herein may relate to enhancements to radio link monitoring (RLM) for new radio (NR) systems. A user equipment (UE) may be configured to retrieve configuration information from a memory. The UE may further determine, based on the configuration information, that a radio link monitoring-reference signal (RLM-RS) resource is configured for quasi co-location (QCL) Type D with more than one control resource set (CORESET), and determine, based on the RLM-RS resource being configured for QCL Type D with more than one CORESET, a physical downlink control channel (PDCCH) parameter for radio link monitoring (RLM). Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: October 25, 2022
    Assignee: Apple Inc.
    Inventors: Qiming Li, Hua Li, Manasa Raghavan, Jie Cui, Yang Tang
  • Patent number: 11483048
    Abstract: A channel state information feedback method and an apparatus to flexibly feed back channel state information, to implement balance between feedback overheads and feedback precision of the channel state information. The method includes: sending a media access control (MAC) frame, where the MAC frame includes a processing mode bitmap, every n bits in the processing mode bitmap correspond to one feedback unit, and a value of the n bits is used to indicate a processing mode of channel state information of the corresponding feedback unit; and receiving a beamforming report, where the beamforming report includes one or more feedback fields, each feedback field corresponds to one feedback unit, the feedback field includes channel state information of the corresponding feedback unit, and the channel state information included in the feedback field is processed in a processing mode indicated by the processing mode bitmap.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: October 25, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jian Yu, Weimin Wu, Jing Dai
  • Patent number: 11476988
    Abstract: Provided are a transmitter and a method for transmitting a data block in a wireless communication system. The method comprises the following steps: deciding the number of bits (s) and encoders (NES) to allocate to one axis of a signal constellation; encoding an information bit based on the s and the NES and generating a coded block; parsing the coded block based on the s and the NES and generating a plurality of frequency sub-blocks; and transmitting the plurality of frequency sub-blocks to a receiver.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: October 18, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jong Ee Oh, Min Ho Cheong, Sok Kyu Lee
  • Patent number: 11476910
    Abstract: Disclosed is a 5G or pre-5G communication system for supporting a data transmission rate higher than that of a 4G system such as LTE.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: October 18, 2022
    Inventors: Seijoon Shim, Chongdon Kim, Hayoung Yang, Chanho Choi
  • Patent number: 11463138
    Abstract: Wireless communications systems and methods related to indicating antenna configuration information and neural network information are disclosed. Neural network information may be selected for an encoder side based on an antenna configuration of a first device housing the encoder. This information may be transmitted with the antenna configuration information to a second device, which may jointly train the neural network with the first device. The first device may further transmit one or more weights after the training, which are stored with the antenna configuration information at the second device as well. When a third device with similar antenna configuration as the first device establishes communication with the second device, the second device may transmit neural network information, as well as weights, to the third device. The third device may use this information, instead of default information, to speed up neural network initialization and training.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: October 4, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Hamed Pezeshki, Tao Luo, Taesang Yoo, Mahmoud Taherzadeh Boroujeni, Arumugam Chendamarai Kannan, Jingchao Bao, Sony Akkarakaran, Ajay Gupta
  • Patent number: 11463234
    Abstract: Systems and methods for maintaining synchronization of repeater networks with Global Positioning System (GPS) signals using phase locked loops (PLLs) and based on generation of predicted control words for controlling local oscillator frequencies is described. The predicted control words can be generated based on performing a linear fit of control words generated over a predetermined duration of time. Phase locked loops with additional false GPS pulse identification and GPS signal loss compensation circuitry can enforce a false pulse count threshold and/or an error threshold. The additional circuitry and prediction of control words can overcome errors in GPS receiver outputs and maintain accuracy of signal timings across single frequency networks using inexpensive local oscillators.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: October 4, 2022
    Assignee: Sirius XM Radio Inc.
    Inventors: Carl Scarpa, Edward Schell
  • Patent number: 11463297
    Abstract: Certain aspects of the present disclosure provide techniques for adaptive modulo base selection for non-linear precoding. Aspects provide a method for wireless communications that can be performed by a base station (BS). The BS adaptively selects a modulo base for a data stream for at least one user equipment (UE) in a transmission to one or more UEs. The BS selects the modulo base based on one or more parameters. The BS transmits a signal for at least one UE of the one or more UEs to identify the selected modulo base. The BS performs the transmission to the one or more UEs. The UE receives the transmission from the BS and the signal for the identification of the selected modulo base. Based on the signal, the UE determines the modulo base for at least one data stream in the transmission and decodes the data stream using the modulo base.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: October 4, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Chenxi Hao, Yu Zhang, Liangming Wu, Hao Xu, Wanshi Chen, Peter Gaal
  • Patent number: 11456772
    Abstract: A network includes a first wireless node that communicates over a wireless network connection. The first wireless node includes a first encryption engine that processes a first initialization data set and a current transmit sequence associated with a current communication to generate a next transmit sequence that is employed to communicate with a second wireless node that derives a next received sequence that corresponds to the next transmit sequence to process a subsequent communication.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: September 27, 2022
    Assignee: Texas Instruments Incorporated
    Inventors: Ariton E. Xhafa, Xiaolin Lu, Janwei Zhou, Il Han Kim
  • Patent number: 11438038
    Abstract: A base station may apply a nonlinear precoding to data for MU-MIMO transmission to a set of paired UEs to generate a first set of precoder symbols, and apply a linear precoding to the first set of precoder symbols to generate a second set of precoder symbols using a linear precoding matrix. The base station may normalize the second set of precoder symbols, and scale the second set of precoder symbols, before transmission of the data, using a scaling factor based on one or more of modulation symbols or a channel matrix. The base station may apply the linear precoding to DMRS associated with the data. The base station may transmit the second set of precoder symbols based on the second set of precoder symbols and the DMRS to the set of paired UEs.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: September 6, 2022
    Assignee: Qualcomm Incorporated
    Inventors: June Namgoong, Taesang Yoo, Naga Bhushan, Hwan Joon Kwon, Krishna Kiran Mukkavilli, Tingfang Ji
  • Patent number: 11438014
    Abstract: A deep neural network (DNN) media noise predictor configured for one-dimensional-magnetic (1DMR) recording or two-dimensional-magnetic (TDMR) is introduced. Such architectures are often combined with a trellis-based intersymbol interference (ISI) detection component in a turbo architecture to avoid the state explosion problem by separating the inter-symbol interference (ISI) detection and media noise estimation into two separate detectors and uses the turbo-principle to exchange information between them so as to address the modeling problem by way of training a DNN-based media noise estimators. Thus, beneficial aspects include a reduced bit-error rate (BER), an increased areal density, and a reduction in computational complexity and computational time.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: September 6, 2022
    Assignee: WASHINGTON STATE UNIVERSITY
    Inventors: Benjamin Joseph Belzer, Krishnamoorthy Sivakumar, Jinlu Shen, Ahmed Aboutaleb, Amirhossein Sayyafan
  • Patent number: 11438128
    Abstract: Systems and/or methods are disclosed of improving vehicular safety by acquiring data from a transceiver responsive to one or more signals that are received at the transceiver from one or more devices. The transceiver may be in a motor vehicle, and the one or more devices may include a base station and/or another transceiver of another motor vehicle. In some embodiments, the transceiver may transmit a signal responsive to having received a first signal from a first device, and the signal that is transmitted by the transceiver may cause a second device to transmit a second signal. Moreover, the transceiver may transmit data responsive to having received the second signal that is transmitted by the second device. In some embodiments, the transceiver may receive a signal from a first device, receive a signal from a second device, and transmit data responsive to having received both of the signals.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: September 6, 2022
    Inventor: Peter D. Karabinis
  • Patent number: 11438032
    Abstract: An OAM reception apparatus (30) includes an OAM reception unit (34) and an interference compensation unit (35C) that are independent of each other. The OAM reception unit (34) and the interference compensation unit (35C) execute “OAM reception processing” and “interference compensation processing”, respectively, based on a plurality of vertical component signals and a plurality of horizontal component signals obtained by performing polarization separating and down-conversion on a plurality of reception radio signals received by a plurality of reception antenna elements (31-1 to 31-4).
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: September 6, 2022
    Assignee: NEC CORPORATION
    Inventors: Ryuji Zenkyu, Eisaku Sasaki
  • Patent number: 11424840
    Abstract: A measurement apparatus comprising a first terminal to receive an input signal of a circuit under test; a second terminal to receive an output signal of the circuit under test. A first and second phase splitter configured to generate a first and second phase signal, I1 and I2, and a first and second quadrature signal, Q1 and Q2. A first and second multiplexer, each coupled to the first terminal and the second terminal and configured to alternately pass the input and output signals of the circuit under test to the inputs of the first and second phase splitters. A double-quadrature mixer having four inputs configured to receive I1, Q1, I2, and Q2, and an output. A calculation unit to determine one or both of a phase shift of the circuit under test and/or a gain of the circuit under test based on the output of the double-quadrature mixer.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: August 23, 2022
    Assignee: NXP B.V.
    Inventors: Frank Op 't Eynde, Olivier Crand, Milad Piri
  • Patent number: 11425732
    Abstract: A method for communication includes obtaining channel estimates that approximate a response of a communication channel between a transmitter and one or more receivers, and performing an iterative process for improving one or more predefined quality metrics of communication between the transmitter and the one or more receivers. The iterative process includes mapping at least the channel estimates into a transmission scheme of the transmitter using a mapping policy, causing the transmitter to apply the transmission scheme, obtaining, based on signals transmitted from the transmitter to the one or more receivers using the transmission scheme, values of the one or more predefined quality metrics, and modifying the mapping policy to improve the quality metrics.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: August 23, 2022
    Assignee: MARVELL ASIA PTE LTD
    Inventor: Kalpendu Pasad