Patents Examined by David B. Lugo
  • Patent number: 10541838
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method and an apparatus for channel estimation in a wireless communication system are provided. According to various embodiments of the present disclosure, an method of a receiving apparatus in a wireless communication system includes: estimating channel tap values by using a first reference signal; and estimating an effective channel regarding a second reference signal, based on channel tap indexes corresponding to values greater than or equal to a threshold from among the channel tap values. According to various embodiments of the present disclosure, the receiving apparatus can more exactly estimate an effective channel, and can achieve a lower BLER even in a high SNR region.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: January 21, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dongjae Lee
  • Patent number: 10530505
    Abstract: Aspects of the subject disclosure may include, launching, by a plurality of launchers of a waveguide system, a wave mode that propagates along a transmission medium without requiring an electrical return path, detecting, by the waveguide system, that the wave mode has a propagation loss caused by an obstruction, and generating, by the plurality of launchers, an adjusted wave mode having an electric field structure that reduces the propagation loss of the obstruction. Other embodiments are disclosed.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: January 7, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Paul Shala Henry, Giovanni Vannucci, Peter Wolniansky, Robert Bennett, Farhad Barzegar, Irwin Gerszberg, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 10530352
    Abstract: The disclosure is directed to implementing a gradual power transition, in digital and mixed-signal power converters. A “soft start” smooths an abrupt power change in the output of a power converter such as when the power converter starts up after turning on the power to a device. A power converter may receive a digital control signal that includes a command to start up, as well as includes a power level set point. This disclosure includes a circuit that receives the digital control signal and outputs a modified control signal to the power converter that causes the power converter to gradually change the power output of the power converter until the power output reaches the power level set point. The circuit dynamically determines a step size, length of time of each step and other parameters based on characteristics of the input digital control signal.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: January 7, 2020
    Assignee: Infineon Technologies Austria AG
    Inventor: Andrea Morici
  • Patent number: 10530456
    Abstract: A method of a user equipment (UE) for beam management is provided. The method comprises storing a database comprising information regarding UE-specific conditions that are detectable by the UE, wherein each of the UE-specific conditions is prioritized, determining whether a UE-specific condition is detected, updating the database including the UE-specific condition based on a result of the determination, re-prioritizing each of the UE-specific conditions included in the database based on a usage probability of the UE-specific condition, generating a searching sequence for beam management based on the database, wherein the searching sequence is mapped to each of the UE-specific conditions, and performing the beam management based on the generated searching sequence.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: January 7, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Boon Loong Ng, Jianhua Mo
  • Patent number: 10516467
    Abstract: According to an example embodiment, there is provided an apparatus comprising circuitry configured to derive at least two outputs, wherein each output comprises a sum of at least two intermediate signals, the circuitry being configured to derive each intermediate signal by applying a coefficient to a signal received from an antenna element, each output corresponding to an antenna beam, and at least one processing core configured to select from a preconfigured plurality of coefficient sets a first set of coefficients, and to provide the selected first set of coefficients to the circuitry for use in deriving the intermediate signals, the selection being based at least in part on an operating condition relating to the apparatus. The coefficients may be chosen to decrease a correlation between the antenna elements, for example.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: December 24, 2019
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Arto Hujanen, Päivi Koivisto, Jouko Aurinsalo
  • Patent number: 10517054
    Abstract: A technique for providing a synchronised clock signal across a wireless mesh network is described. The technique includes choosing one of a plurality received radio frequency signals to provide a synchronisation signal to which a local clock signal can be synchronised.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: December 24, 2019
    Assignee: BLUWIRELESS TECHNOLOGY LIMITED
    Inventor: Ray McConnell
  • Patent number: 10511060
    Abstract: A 5th generation (5G) or pre-5G communication system for supporting a data transmission rate higher than that of a 4th generation (4G) communication system such as long term evolution (LTE) is disclosed. The present disclosure relates to a rate compatible low-density parity-check (RC-LDPC) encoding method and device therefor. The encoding method includes using LDPC in a communication system, including the operations of LDPC encoding information bits by a first encoding rate, and performing a concatenated single parity check (SPC) encoding for the encoded bits by at least one second encoding rate lower than the first encoding rate.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: December 17, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min Jang, Seok-Ki Ahn, Chi-Woo Lim, Jae-Yoel Kim, Woo-Myoung Park
  • Patent number: 10498573
    Abstract: Systems and methods for combining signals from multiple active wireless receivers are discussed herein. An exemplary system comprises a first downconverter, a phase comparator, a phase adjuster, and a second downconverter. The first downconverter may be configured to downconvert a received signal from a first antenna to an intermediate frequency to create an intermediate frequency signal. The phase comparator may be configured to mix the received signal and a downconverted signal to create a mixed signal, compare a phase of the mixed signal to a predetermined phase, and generate a phase control signal based on the comparison, the downconverted signal being associated with the received signal from the first antenna. The phase adjuster may be configured to alter the phase of the intermediate frequency signal based on the phase control signal. The second downconverter may be configured to downconvert the phase-shifted intermediate frequency signal to create an output signal.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: December 3, 2019
    Assignee: Aviat U.S., Inc.
    Inventor: Ying Shen
  • Patent number: 10491266
    Abstract: In an ultra-wideband (“UWB”) receiver, a received UWB signal is periodically digitized as a series of ternary samples. During a carrier acquisition mode, the samples are continuously correlated with a predetermined preamble sequence to develop a correlation value. When the value exceeds a predetermined threshold, indicating that the preamble sequence is being received, estimates of the channel impulse response (“CIR”) are developed. When a start-of-frame delimiter (“SFD”) is detected, the best CIR estimate is provided to a channel matched filter (“CMF”). During a data recovery mode, the CMF filters channel-injected noise from the sample stream. Both carrier phase errors and data timing errors are continuously detected and corrected during both the carrier acquisition and data recovery modes of operation.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: November 26, 2019
    Assignee: Decawave Ltd.
    Inventors: Michael McLaughlin, Dries Neirynck, Ciaran McElroy
  • Patent number: 10491344
    Abstract: Embodiments of this application provide a signal transmission method and apparatus, and the method includes: filtering a first time domain orthogonal frequency division multiplexing (OFDM) signal at each of M spatial transmission layers, where M is an integer greater than or equal to 1; performing spatial precoding on the filtered first time domain OFDM signal at each of the M spatial transmission layers, and mapping the filtered first time domain OFDM signal at each of the M spatial transmission layers to each of Nt transmit antenna ports, where Nt is an integer greater than or equal to M; and superposing and transmitting the first time domain OFDM signals that are at the M spatial transmission layers and that are mapped to all the Nt transmit antenna ports.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: November 26, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jing Qiu, Ming Jia, Jianglei Ma
  • Patent number: 10484053
    Abstract: Diversity receiver front end system with methods for improving signal processing using tunable matching circuits. The methods can include tuning impedance matching circuits based on frequency bands. For a first path, an impedance can be provided that reduces an in-band noise figure, increases an in-band gain, decreases an out-of-band noise figure, and/or decreases an out-of-band gain. In this way, signals propagated along selectively activated paths between an input of a receiving system and an output of the receiving system can be improved. The signals can be amplified using amplifiers disposed on corresponding paths between the input and output of the receiving system.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: November 19, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventor: Stephane Richard Marie Wloczysiak
  • Patent number: 10484228
    Abstract: Methods, systems, and devices for wireless communication are described. A transmitting device may transmit a wakeup message to another device. The wakeup message may be transmitted using a transmit diversity scheme in accordance with aspects of the present disclosure. The transmit diversity may, for example, include a cyclic shift diversity scheme, a phase rotation scheme, a symbol generation scheme, or combinations thereof. The transmit diversity may in some cases improve a communication range of the wakeup message or otherwise benefit the wireless communications system.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: November 19, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Stephen Jay Shellhammer, Bin Tian
  • Patent number: 10476564
    Abstract: A system and method of variable latency data transmission. The method includes transforming a first original data frame in accordance with a first time-frequency transformation so as to provide a first transformed data frame wherein the first time-frequency transformation is associated with a first latency. The method further includes transforming a second original data frame in accordance with a second time-frequency transformation so as to provide a second transformed data frame wherein the second time-frequency transformation is associated with a second latency. Using a transmitter, elements of the first transformed data frame are transmitted over a first frame period corresponding to the first latency and elements of the second transformed data frame are transmitted over a second frame period corresponding to the second latency wherein the first frame period is different from the second frame period.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: November 12, 2019
    Inventors: Ronny Hadani, Shlomo Selim Rakib
  • Patent number: 10467369
    Abstract: Systems and methods for application specific integrated circuit design using Chronos links are disclosed. A Chronos Link is an ASIC on-chip and off-chip interconnect communication protocol that allows interfaces to transmit and receive information. The protocol may utilize messages or signals to indicate the availability and/or readiness of information to be exchanged between a producer and a consumer allowing the communication to be placed on hold and to be resumed seamlessly. A method includes inserting gaskets and channel repeaters connected to interfaces of multiple intellectual property (IP) blocks in order to replace traditional links with Chronos Links; performing simplified floorplanning; performing simplified placement; performing simplified clock tree synthesis (CTS) and routing; and performing simplified timing closure.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: November 5, 2019
    Assignee: CHRONOS TECH LLC
    Inventors: Stefano Giaconi, Giacomo Rinaldi
  • Patent number: 10447523
    Abstract: The disclosure relates to an IQ mismatch correction module for a radio receiver, the IQ mismatch correction module comprising: an input terminal configured to receive an input signal; an output terminal configured to provide a filtered output signal; a mismatch detection module comprising: one or more bandpass filters configured to receive, from the input terminal or output terminal, a bandpass input signal and to pass a plurality of sub-bands of the bandpass input signal to provide respective bandpass filtered signals; one or more amplitude and phase mismatch detectors configured to determine amplitude and phase mismatch coefficients based on the bandpass filtered signals from the plurality of sub-bands; a transformation unit configured to apply a transformation to the amplitude and phase mismatch coefficients to provide correction filter coefficients for the plurality of sub-bands; and a filter module configured to: receive the filter coefficients for the plurality of sub-bands from the mismatch detection m
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: October 15, 2019
    Assignee: NXP B.V.
    Inventors: Joerg Heinrich Walter Wenzel, Robert Rutten, Evert-Jan Pol, Jan van Sinderen, Tjeu van Ansem, Peter van de Haar
  • Patent number: 10447511
    Abstract: Calibrating a Gaussian frequency-shift keying modulation index includes generating a training sequence of bits, shaping a pulse from the training sequence according to an initial modulation index, and converting the shaped signal to a transmission signal. The transmission signal is then either looped through a radio frequency core or processed by frequency deviation estimation hardware to determine a frequency deviation. The frequency deviation is converted to a new modulation index, and potentially a ratio between a target modulation index and a measured modulation index as a scaling factor. The process is then iteratively repeated until a threshold frequency deviation is achieved.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: October 15, 2019
    Assignee: Cypress Semiconductor Corporation
    Inventors: Kai Xie, Yan Li, Hongwei Kong, Jie Lai, Kamesh Medapalli
  • Patent number: 10439675
    Abstract: Aspects of the subject disclosure may include, for example, a guided wave repeater system operable to receive via a guided wave transceiver a first plurality of electromagnetic waves that includes a first communication signal. A second plurality of electromagnetic waves that includes a second communication signal is transmitted via the guided wave transceiver. The first plurality of electromagnetic waves and the second plurality of electromagnetic waves are guided by a power line of a utility pole. A third communication signal is received from a smart grid device. A fourth communication signal is transmitted to the smart grid device. Other embodiments are disclosed.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: October 8, 2019
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Shikik Johnson, Pamela A. M. Bogdan, Paul Shala Henry, Robert Bennett, Irwin Gerszberg, Farhad Barzegar, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 10436757
    Abstract: When frequencies used in the two-frequency measurement of a SAW sensor are represented by f1 and f2 (f2>f1), an electrical signal processing device is provided without use of oversampling at a frequency higher than twice the frequency f2 or a two-system low-frequency conversion circuit, in which temperature compensation with the same accuracy as the case where these are used can be realized. Narrow band frequency filtering is applied to a waveform after roundtrips in a delay line type SAW sensor capable of transmitting and receiving multiple frequencies, the two frequencies f1 and f2 (f2>f1) are extracted, and a delay time is determined utilizing an aliasing obtained by applying undersampling at a frequency lower than twice the frequency f1.
    Type: Grant
    Filed: November 26, 2015
    Date of Patent: October 8, 2019
    Assignee: TOHOKU UNIVERSITY
    Inventors: Kazushi Yamanaka, Toshihiro Tsuji, Toru Oizumi
  • Patent number: 10432254
    Abstract: A user terminal is disclosed including a receiver that receives a downlink signal that is transmitted in repetitions in narrow bands to which frequency hopping is applied, and a processor that specifies a pattern of the applied frequency hopping based on a starting index that indicates a first narrow band in the narrow bands and a frequency offset that is a shift in a frequency direction from the first narrow band. The processor causes the receiver to receive the downlink signal using the specified pattern. Each of the narrow bands is a part of a system band. The user terminal communicates using the narrow bands only. The downlink signal starts being allocated to the first narrow band.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: October 1, 2019
    Assignee: NTT DOCOMO, INC.
    Inventors: Kazuaki Takeda, Ruifeng Ma, Qin Mu, Liu Liu, Huiling Jiang
  • Patent number: 10425201
    Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as a long term evolution (LTE). An operating method of a transmitting apparatus in a wireless communication system is provided. The operating method includes detecting an achievable rate region for a receiving apparatus, and determining a modulation and coding scheme (MCS) level and a sliding window superposition coding (SWSC) multi-input multi-output (MIMO) scheme corresponding to the achievable rate region.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: September 24, 2019
    Assignees: Samsung Electronics Co., Ltd., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Kwang Taik Kim, Young-Han Kim, Seok-Ki Ahn, Chiao-Yi Chen