Patents Examined by Sophia Vlahos
  • Patent number: 10498557
    Abstract: A signal modulated according to zero-tail discrete Fourier transform spread orthogonal frequency division multiplexing (ZT DFT-s-OFDM) is received over a channel. The signal is down-sampled into a first sequence including N samples, N corresponding to the number of used subcarriers. The first Nh samples and the last Nt samples are removed from the first sequence, thereby obtaining a second sequence having a length of N-Nh-Nt. The second sequence is correlated with a reference sequence which has a length N-Nh-Nt, and a frequency response of the channel is estimated over the N used subcarriers based on a result of the correlation.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: December 3, 2019
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Gilberto Berardinelli, Frank Frederiksen, Klaus Ingemann Pedersen, Kari Pekka Pajukoski
  • Patent number: 10469151
    Abstract: Disclosed in the present application is a method for receiving a downlink signal by a terminal from a base station in a wireless communication system. In particular, the present invention is characterized by comprising the steps of: receiving a beam scanning subframe, configured of a plurality of preambles for scanning transmission means at first intervals, from the base station; selecting a preferred transmission beam corresponding to one preamble from among the plurality of preambles, and a preferred reception beam corresponding to the preferred transmission beam reporting information on the preferred transmission beam to the base station; and receiving the one preamble and a certain subframe configured of a downlink physical channel beam formed by the preferred transmission beam at second intervals within the first interval.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: November 5, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Jiwon Kang, Kitae Kim, Kilbom Lee, Kukheon Choi, Heejin Kim, Kyuseok Kim
  • Patent number: 10469127
    Abstract: An ultra-wideband communication and/or location system having a plurality of channels, each implementing a respective one of a plurality of predetermined codewords. Within each channel, one or more predetermined pulse repetition frequencies are defined. Within a single UWB system, more than two networks of transceivers may be co-located without mutual interference if each is assigned a unique combination of codewords and spreading factors.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: November 5, 2019
    Assignee: Decawave Ltd
    Inventors: Michael McLaughlin, Billy Verso
  • Patent number: 10461980
    Abstract: A method for a receiving side processing a signal in a wireless communication system according to the present invention may comprise the steps of: receiving, from a transmitting side, information for the length, in a band where the receiving side is allocated, of a band pass filter to be applied to a transmission signal of the transmitting side and the length of the greatest band pass filter applied to a time interval identical to the transmission signal; and on the basis of the information for the length of a band pass filter to be applied to a transmission signal of the transmitting side and the length of the greatest band pass filter applied to a time interval identical to the transmission signal, setting an N Fast Fourier Transform (FFT) window starting point for detecting the transmission signal.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: October 29, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Sangrim Lee, Hyunsoo Ko, Jaehoon Chung, Kwangseok Noh, Dongkyu Kim
  • Patent number: 10454665
    Abstract: An apparatus is disclosed for hybrid-controlled clock generation. In an example aspect, the apparatus includes an analog control circuit, a digital control circuit, a transistor array, an oscillator circuit, and a selection circuit. The oscillator circuit is coupled to the transistor array. The selection circuit includes a first input that is coupled to the analog control circuit, a second input that is coupled to the digital control circuit, and an output that is coupled to the transistor array. The selection circuit is configured to obtain a selection signal that is indicative of the first input coupled to the analog control circuit or the second input coupled to the digital control circuit. The selection circuit is also configured to connect, based on the selection signal, the analog control circuit or the digital control circuit to the transistor array.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: October 22, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Shunta Iguchi, Ilker Deligoz, Michael Naone Farias
  • Patent number: 10454557
    Abstract: A method for transmitting reference signals includes: determining, by a wireless transmitting device, a first vector set used for calculating a first vector subspace that includes a channel frequency response vector corresponding to a subcarrier; calculating, by the wireless transmitting device, a second vector set including several second vectors derived from performing dot product operations to each vector in the first vector set with a conjugate vector of each vector in the first vector set; calculating, by the wireless transmitting device, a null space of a second vector subspace spanned by the second vector set and determining, by the wireless transmitting device, a cover code from the null space; and transmitting a first reference signal and a second reference signal which is a dot product of the first reference signal and the cover code on the subcarrier from the wireless transmitting device to a wireless receiving device.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: October 22, 2019
    Assignee: Institute For Information Industry
    Inventors: Tsung-Yu Tsai, Chin-Gwo Ma
  • Patent number: 10447358
    Abstract: A multipath communication system forms a complex weighted compound signal for transmission through a channel environment wherein the compound signal includes a complex variable weighted compound signal related to a count of available antennas, a power constraint related to each said antenna, and a channel state characteristic.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: October 15, 2019
    Assignee: Trustees of Tufts College
    Inventor: Mai Vu
  • Patent number: 10439672
    Abstract: Systems and methods for signaling or receiving cell identity, network identity, and/or Frequency Hopping (FH) patterns are disclosed. In some embodiments, a method of operating a wireless device in a wireless communication network includes obtaining a signal transmitted from a network node and determining a physical cell identifier, ID, of the network node based on the signal. The method also includes determining a FH pattern of the network node based on the determined physical cell ID of the network node. In this manner, the wireless device can efficiently determine the FH pattern used and may be able to determine if the wireless device should connect to the network node.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: October 8, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Yi-Pin Eric Wang, Cagatay Capar, Jung-Fu Cheng, Havish Koorapaty, Xingqin Lin, Amitav Mukherjee
  • Patent number: 10439758
    Abstract: A receiving apparatus includes: a first decoder configured to decode a signal transmitted through a first layer from a layered division multiplexing (LDM) signal using a parity check matrix to generate low density parity check (LDPC) information word bits and parity bits; an encoder configured to encode the LDPC information word bits, generated by decoding the signal transmitted through the first layer, using the parity check matrix to generate parity bits corresponding only to preset columns in the parity check matrix; and a second decoder configured to decode a signal obtained by removing, from the LDM signal, a signal corresponding to the LDPC information word bits generated by decoding the signal transmitted through the first layer, the parity bits generated by the encoder, and the parity bits generated by the first decoder except the parity bits generated by the encoder, thereby to generate information word bits transmitted through a second layer.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: October 8, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hyun Park, Jung-pil Yu, Sung-kyu Jung, Chang-hoon Choi
  • Patent number: 10432272
    Abstract: Aspects of this disclosure relate to variable multiple-input multiple-output (MIMO) downlink user equipment. Features are described for dynamically adjusting an operational state of a user equipment to obtain network services (e.g., downlink data traffic) according to different transmission modes. The user equipment may provide reports to a network controller indicating characteristics of the user equipment. The characteristics may indicate service level, quality, or type needed for user equipment operations. The user equipment may receive configuration information to adjust wireless capabilities to best meet the identified needs of the user equipment and the MIMO network.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: October 1, 2019
    Assignee: XCOM Labs, Inc.
    Inventors: Peter John Black, Matthew Stuart Grob, Michael Mingxi Fan, Tamer Adel Kadous
  • Patent number: 10432286
    Abstract: The present invention relates to a method for receiving a reference CSI configuration information and a following CSI configuration information which is configured to report a same RI (Rank Indicator) as the reference CSI configuration information, receiving a first precoding codebook subset information for the reference CSI configuration information and a second precoding codebook subset information for the following CSI configuration information, set of RIs according to the second precoding codebook subset information is same as set of RIs according to the first precoding codebook subset information, and transmitting CSI determined based on at least one of the first precoding codebook subset information and the second preceding codebook subset information.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: October 1, 2019
    Assignee: LG ELectronics Inc.
    Inventors: Hyungtae Kim, Byounghoon Kim, Kijun Kim
  • Patent number: 10425257
    Abstract: Systems and methods are disclosed for detecting sequences of symbols in a received signal in the presence of inter-symbol interference. Maximum Likelihood Sequence Detection (MLSD) is a known method for optimum detection of such sequences. To reduce the complexity of the MLSD, a Reduced-State Sequence Detection (RSSD) technique has been considered based on partitioning the states of the MLSD. In this approach, a simplified sequence detector is placed within a global decision feedback loop. The disclosed architecture shortens the feedback loop by moving the sequence detector outside the loop and converting the interaction between the two to a feed-forward manner. This is achieved through slicing the signal and closing a nested loop around the sliced bins. A further variant simplifies the detector even more by reducing the number of bins.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: September 24, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Mohammad Hossein Shakiba
  • Patent number: 10419252
    Abstract: System, methods and apparatus are described that facilitate transmission of data, particularly between two devices within electronic equipment. Transmission lines are selectively terminated in an N-phase polarity encoded transmitter when the transmission lines would otherwise be undriven. Data is mapped to a sequence of symbols to be transmitted on a plurality of wires. The sequence of symbols is encoded in three signals. A first terminal of a plurality of terminals may be driven such that transistors are activated to couple the first terminal to first and second voltage levels. The first terminal may further be driven such that a dedicated transistor is activated to couple the first terminal to an intermediate voltage level.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: September 17, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Shih-Wei Chou, Chulkyu Lee, Dhaval Sejpal
  • Patent number: 10409749
    Abstract: An SCI can perform transmission only or reception only, however, it is necessary to reset the SCI when transmission and reception is switched to transmission only or to reception only. A semiconductor device includes an interface circuit which performs a sequential communication of transmit or receive according to a synchronous clock. The interface circuit includes a register to specify an operation enabled state which is at least one of a transmit state and a receive state, and a mode control circuit to change at least one mode of transmit or receive in the operation enabled state.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: September 10, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Naoki Mitsuishi, Seiji Ikari
  • Patent number: 10411775
    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). According to one embodiment, an apparatus for beamforming includes a detector for measuring at least one change of movement and rotation of an apparatus; and a calculator for determining a beamforming parameter for aligning a beam direction with another apparatus by compensating for the change of the beam direction according to at least one of the movement and the rotation.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: September 10, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Youngbin Chang, Rakesh Taori
  • Patent number: 10411785
    Abstract: Systems and technologies described herein provide functionality for a cellular base station to dynamically indicate a reception (Rx) beam to be used by a user equipment (UE). The Rx beam can be indicated explicitly or implicitly. The UE can, for example, use the Rx beam for Physical Downlink Shared Channel (PDSCH) reception, Channel State Information Reference Signal (CSI-RS) measurements, and/or Channel State Information (CSI) calculation at the UE. Systems and technologies described herein are generally useful for systems that use multiple transmission (Tx) beams and/or that support Coordinated Multipoint (CoMP) transmission technology.
    Type: Grant
    Filed: December 26, 2015
    Date of Patent: September 10, 2019
    Assignee: INTEL CORPORATION
    Inventors: Alexei Davydov, Hyejung Jung, Gregory Morozov
  • Patent number: 10396852
    Abstract: Embodiments of methods and systems for supporting coexistence of multiple technologies in a Power Line Communication (PLC) network are disclosed. A long coexistence preamble sequence may be transmitted by a device that has been forced to back off the PLC channel multiple times. The long coexistence sequence provides a way for the device to request channel access from devices on the channel using other technology. The device may transmit a data packet after transmitting the long coexistence preamble sequence. A network duty cycle time may also be defined as a maximum allowed duration for nodes of the same network to access the channel. When the network duty cycle time occurs, all nodes will back off the channel for a duty cycle extended inter frame space before transmitting again. The long coexistence preamble sequence and the network duty cycle time may be used together.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: August 27, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATION
    Inventors: Kumaran Vijayasankar, Ramanuja Vedantham, Tarkesh Pande
  • Patent number: 10374681
    Abstract: A method for processing information representative of a transmission channel between a radio transmitter and a radio receiver. The information includes a matrix representative of the transmission channel. The method includes obtaining at least one pair of eigencharacteristics of the product of the conjugate transpose of the channel matrix with the channel matrix, consisting of non-zero eigenvalues; obtaining a measurement of a signal to noise ratio in the transmission channel; calculating at least one eigenvalue of an autocorrelation matrix of the symbols on transmission, according to a criterion of maximizing a capacity of the transmission channel, from the eigenvalues obtained; and transmitting to the radio transmitter information representative of the at least one calculated non-zero eigenvalue associated with the eigenvector.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: August 6, 2019
    Assignee: B<>COM
    Inventors: Stephane Paquelet, Remi Bonnefoi
  • Patent number: 10367660
    Abstract: A rate determination apparatus 1 includes a reception unit 2 configured to receive a transmission frame modulated by an FSK modulation scheme, a symbol rate detection unit 3 configured to detect a symbol rate based on a period of a preamble portion in the received transmission frame, a multilevel symbol detection unit 4 configured to detect a multilevel-modulated multilevel symbol based on a frequency deviation in the received transmission frame, and a bit rate determination unit 5 configured to determine a bit rate based on the detected symbol rate and the detected multilevel symbol. Then, the bit rate can be determined during communication.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: July 30, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Kichung Kim, Hiroyuki Okada, Naohiro Matsui, Tomoaki Hirota
  • Patent number: 10361706
    Abstract: A clock and data recovery (CDR) circuit for data sampling includes a sampler, a phase detector, a proportional-integral (PI) controller, and an oscillator. The sampler receives a data signal and a clock signal, and generates first, second, and third sampled signals. The phase detector receives the first, second, and third sampled signals, and generates first and second early-late vote (ELV) signals. The charge pump steers a current signal into or out of one of summing nodes based on the first and second ELV signals. The integrator circuit receives the current signal from one of the summing nodes, and generates a first control signal. The proportional circuit receives the first and second ELV signals, and generates a second control signal. The oscillator receives the first and second control signals from the integrator and proportional circuits, respectively, and generates a clock signal for sampling the data.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: July 23, 2019
    Assignee: Synopsys, Inc.
    Inventors: Biman Chattopadhyay, Jairaj Naik K R