Quadrature Carriers Patents (Class 370/206)
  • Patent number: 10892930
    Abstract: Provided are a communication method based on a peak-to-average ratio (PAPR) and a transmission apparatus and a receive apparatus using the same and a communication method based on a peak-to-average ratio (PAPR) by a transmission apparatus according to an exemplary embodiment of the present disclosure includes: obtaining each of PAPR values corresponding to respective data symbols from a lookup table having a unique PAPR value; Generating a synchronization signal configured in a random sequence based on a the PAPR value of each data symbol; and transmitting the synchronization signal.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: January 12, 2021
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Kang Yoon Lee, Muhammad Riaz Ur Rehman, Truong Thi Kim Nga, Ali Imran, Hamed Abbasi Zadeh, Kwan Tae Kim, Sang Yun Kim, Dong In Kim
  • Patent number: 10873971
    Abstract: An information transmission method includes: receiving a random access preamble sent by user equipment (UE); generating first information according to the received random access preamble, where the first information is information about a random access response to the random access preamble, and the first information includes at least one of the following information: timing advance indication information, indication information of a narrowband resource used for transmission of a control channel, indication information of a subframe used for transmission of the control channel, indication information of a demodulation reference signal scrambling sequence initialization parameter used for transmission of the control channel, indication information of a coverage enhancement level used for transmission of the control channel, or resource allocation information used for transmission of second information, where the second information is information about a response to the first information; and sending the first
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: December 22, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Zheng Yu, Xiangdong Zhang
  • Patent number: 10862607
    Abstract: A method of transmitting data signals comprising a shortened downlink shared channel (sPDSCH) by a base station in a wireless access system supporting an unlicensed band, the method includes performing a carrier sensing to check whether the unlicensed band is in an idle state or not; and transmitting, to a user equipment (UE), the data signals comprising the sPDSCH based on the carrier sensing via the unlicensed band during a channel occupancy time; wherein the sPDSCH is transmitted in a first time interval or a second time interval following the first time interval, wherein the first time interval starts from a starting point of the transmission of the data signal, and wherein the second time interval ends at a subframe boundary of a licensed band.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: December 8, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Seonwook Kim, Joonkui Ahn, Kijun Kim, Suckchel Yang, Hanbyul Seo, Seungmin Lee, Hanjun Park, Hyangsun You, Yunjung Yi
  • Patent number: 10826657
    Abstract: Embodiments are provided for supporting variable sub-carrier spacing and symbol duration for transmitting OFDM or other waveform symbols and associated cyclic prefixes. The symbol duration includes the useful symbol length and its associated cyclic prefix length. The variable sub-carrier spacing and symbol duration is determined via parameters indicating the sub-carrier spacing, useful symbol length, and cyclic prefix length. An embodiment method, by a network or a network controller, includes establishing a plurality of multiple access block (MAB) types defining different combinations of sub-carrier spacing and symbol duration for waveform transmissions. The method further includes partitioning a frequency and time plane of a carrier spectrum band into a plurality of MAB regions comprising frequency-time slots for the waveform transmissions. The MAB types are then selected for the MAB regions, wherein one MAB type is assigned to one corresponding MAB region.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: November 3, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jianglei Ma, Ming Jia
  • Patent number: 10827515
    Abstract: A sequence-based signal processing method and apparatus are provided. A sequence meeting a requirement for sending a signal by using a physical uplink control channel (PUCCH) is determined, where the sequence is a sequence {fn} consisting of N elements, fn is an element in the sequence {fn}, and the determined sequence {fn} is a sequence meeting a preset condition; then, the N elements in the sequence {fn} are respectively mapped to N subcarriers to generate a first signal; and the first signal is sent. By using the determined sequence, when a signal is sent by using a PUCCH, a low sequence correlation can be maintained, and a relatively small peak-to-average power ratio (PAPR) value and cubic metric (CM) value can also be maintained, thereby meeting a requirement of a communication application environment in which a signal is sent by using a PUCCH.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: November 3, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Bingyu Qu, Hao Sun
  • Patent number: 10805455
    Abstract: A connection manager manages connections for associated user devices by determining whether an incoming connection has been answered at a user device, and if so then generating and transmitting silencing commands to associated user devices using first and second wireless communication modes, with one mode being faster. Connections can comprise phone calls, and modes can comprise push and Bluetooth® messaging. The connection manager can instruct device outputs to provide connection alerts, limited to visual alerts when an associated user device is active, listen for associated user device communications, and instruct device outputs to stop providing alerts when a silencing command is received. Further, a connection manager can receive a signal regarding a headset status, route an outside connection from a phone to the headset when the headset is active or to another device when the headset is not active, detect a change in headset status, and reroute the connection accordingly.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: October 13, 2020
    Assignee: Apple Inc.
    Inventors: Keith W. Rauenbuehler, Nicholas M. Fraioli
  • Patent number: 10790953
    Abstract: Disclosed are a method for transmitting and receiving between a base station (BS) and a terminal in a wireless communication system, and a device supporting the same. Specifically, disclosed are a method for transmitting, by a base station, a plurality of downlink data channels in a subframe according to a time divisional multiplexing (TDM), and operating a terminal in response to the transmission, and a device supporting the same method.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: September 29, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Kijun Kim, Suckchel Yang, Joonkui Ahn, Eunsun Kim
  • Patent number: 10771122
    Abstract: Methods and apparatus for discovering codeword decoding order in a serial interference cancellation receiver using reinforcement learning. In an embodiment, a method is provided for decoding codewords in a multiple-input-multiple-output (MIMO) communication network. The method includes determining a decoding order based on a state space and a decoding policy, decoding selected codewords based on the decoding order, updating the decoding policy based on the decoding results and the state space, updating the state space based on decoding results, and updating the decoding order based on the state space and the decoding policy.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: September 8, 2020
    Assignee: Marvell World Trade Ltd.
    Inventor: Kalpendu Ratanshi Pasad
  • Patent number: 10742457
    Abstract: Embodiments of the present disclosure describe apparatuses, systems, and methods for initialization of pseudo noise (PN) sequences for reference signals and data scrambling. Some embodiments may be to initialize the first M-sequence of the PN sequence with a fixed value; and initialize the second M-sequence of the PN sequence with a compressed value. Some embodiments may be to initialize the first M-sequence of the PN sequence with a fixed value; initialize the second M-sequence of the PN sequence with a part of the initialization parameters; and shift the PN sequence by another part of the initialization parameters. Some embodiments may be to initialize the first M-sequence of the PN sequence with a part of the initialization parameters; and initialize the second M-sequence of the PN sequence with another part of the initialization parameters. The embodiments may lead to a more efficient hardware design.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: August 11, 2020
    Assignee: Apple Inc.
    Inventors: Yongjun Kwak, Avik Sengupta, Dae Won Lee, Alexei Davydov, Seunghee Han, Gregory Morozov, Sameer Pawar
  • Patent number: 10720946
    Abstract: A radio frequency transmitter includes a digital-to-analog converter (DAC), a load circuit, and a modulator circuit. The load circuit is coupled to an output of the DAC. The modulator circuit is coupled to the DAC and the load circuit. The modulator circuit includes a driver circuit configured to provide a bias voltage to the load circuit, and an amplifier configured to receive an output of the DAC biased by an output of the load circuit.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: July 21, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jagdish Chand, Subhashish Mukherjee
  • Patent number: 10715368
    Abstract: A communication device generates a first portion of a physical layer (PHY) preamble of a PHY data unit to include a first plurality of orthogonal frequency division multiplexing (OFDM) symbols. Each OFDM symbol of the first plurality of OFDM symbols is modulated on at most X OFDM subcarriers, where X is a positive integer greater than one. The communication device generates a second portion of the PHY preamble to include a second plurality of OFDM symbols. Each OFDM symbol of the second plurality of OFDM symbols is modulated on at most N*X OFDM subcarriers, where N is a positive integer greater than one. The communication device generates a PHY data portion of the PHY data unit to include one or more third OFDM symbols. Each third OFDM symbol is modulated on at most N*X OFDM subcarriers. The communication device transmits the PHY data unit via the wireless communication channel.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: July 14, 2020
    Assignee: NXP USA, INC.
    Inventors: Hongyuan Zhang, Yakun Sun, Mingguang Xu, Rui Cao, Hui-Ling Lou
  • Patent number: 10708012
    Abstract: This invention discloses methods and circuits of wideband wireless transmitting and/or receiving by combining multiple RF transmitters and/or receivers, or multiple transceivers, each of which has a narrower bandwidth, e.g., producing a RF transmitter and receiver or a RF transceiver whose signal bandwidth is the sum or approximately the sum, e.g., slightly less than the sum, of the signal bandwidth of the multiple RF transmitters and/or receivers, or multiple RF transceivers. The embodiments apply in wireless communication systems with orthogonal or approximately orthogonal subcarrier type of modulation (OSM), e.g., Orthogonal Frequency Division Multiplexing (OFDM).
    Type: Grant
    Filed: February 9, 2019
    Date of Patent: July 7, 2020
    Assignee: RF DSP Inc.
    Inventors: Jason Brent, Dengkui Zhu, Ping Liang
  • Patent number: 10708035
    Abstract: A signal processing device includes: a filter configured to perform an adaptive equalization process of a signal, on a basis of a filter coefficient; an updater configured to update the filter coefficient, on a basis of amplitude of the signal and a target value of the amplitude; and a corrector configured to correct the target value, on a basis of the amplitude of the signal.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: July 7, 2020
    Assignee: FUJITSU LIMITED
    Inventors: Tomofumi Oyama, Hisao Nakashima
  • Patent number: 10701755
    Abstract: A method for wireless communication includes transmitting at least first and second uplink signals by a UE to first and second virtualized radio units, respectively. The first and second uplink signals are processed by one or more virtual machines shared by both the first and second radio units. The UE switches connection from the first virtualized radio unit to the second virtualized radio unit without a transfer of context information from the first virtualized radio unit to the second virtualized radio unit. A first virtual machine implements at least one of a lower physical layer (PHY-Low), an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), and a radio frequency (RF) transceiver. A second virtual machine implements at least one of a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a higher physical (PHY-high) layer.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: June 30, 2020
    Assignee: Phazr, Inc.
    Inventor: Farooq Khan
  • Patent number: 10694517
    Abstract: Embodiments disclosed herein relate to methods and systems for providing improved position location (e.g., time-of-arrival) measurement and enhanced position location in wireless communication systems. In an example method, an access terminal may receive a reference signal in a time slot, the reference signal comprising a sequence of symbols known to a receiver before being received, and may determine, based at least in part on the reference signal, a position location of the access terminal.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: June 23, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Peter John Black, Matthew Stuart Grob
  • Patent number: 10694522
    Abstract: A method for receiving an acknowledgement signal by a base station in a wireless communication system and a base station are provided. The method includes transmitting information associated with transmission of a periodic channel quality indication (CQI) signal in an operating bandwidth; receiving a dynamic acknowledgement signal by using a first frequency resource in response to transmission of a downlink data signal, wherein a resource block (RB) allocated for the dynamic acknowledgement signal is determined based on the transmitted information; and receiving a periodic acknowledgement signal by using a second frequency resource in response to transmission of a downlink data signal, wherein the second frequency resource is allocated between the first frequency resource and a third frequency resource allocated for the periodic CQI signal.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: June 23, 2020
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Aris Papasakellariou, Joon-Young Cho
  • Patent number: 10681741
    Abstract: An example method in a user equipment comprises generating a random access preamble signal and transmitting the random access preamble signal. This generating of the random access preamble signal comprises generating a random access preamble signal comprising two or more consecutive preamble symbol groups, each preamble symbol group comprising a cyclic prefix portion and a plurality of identical symbols occupying a single subcarrier of the random access preamble signal. The single subcarrier for at least one of the preamble symbol groups corresponds to a first subcarrier frequency and the single subcarrier for an immediately subsequent one of the preamble symbol groups corresponds to a second subcarrier frequency.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: June 9, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Xingqin Lin, Ansuman Adhikary, Asbjörn Grövlen, Dennis Hui, Niklas Johansson, Yutao Sui, Mårten Sundberg, Yi-Pin Eric Wang
  • Patent number: 10660121
    Abstract: A sequence-based signal processing method and apparatus are provided. A sequence meeting a requirement for sending a signal by using a physical uplink control channel (PUCCH) is determined, where the sequence is a sequence {fn} consisting of N elements, fn is an element in the sequence {fn}, and the determined sequence {fn} is a sequence meeting a preset condition; then, the N elements in the sequence {fn} are respectively mapped to N subcarriers to generate a first signal; and the first signal is sent. By using the determined sequence, when a signal is sent by using a PUCCH, a low sequence correlation can be maintained, and a relatively small peak-to-average power ratio (PAPR) value and cubic metric (CM) value can also be maintained, thereby meeting a requirement of a communication application environment in which a signal is sent by using a PUCCH.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: May 19, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Bingyu Qu, Hao Sun
  • Patent number: 10616021
    Abstract: A method of transmitting a Physical Layer Convergence Procedure (PLCP) frame in a Very High Throughput (VHT) Wireless Local Area Network (WLAN) system includes generating a MAC Protocol Data Unit (MPDU) to be transmitted to a destination station (STA), generating a PLCP Protocol Data Unit (PPDU) by adding a PLCP header, including an L-SIG field containing control information for a legacy STA and a VHT-SIG field containing control information for a VHT STA, to the MPDU, and transmitting the PPDU to the destination STA. A constellation applied to some of Orthogonal Frequency Division Multiplex (OFDM) symbols of the VHT-SIG field is obtained by rotating a constellation applied to an OFDM symbol of the L-SIG field.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: April 7, 2020
    Assignee: Wi-Fi One, LLC
    Inventors: Dae Won Lee, Dong Wook Roh, Byeong Woo Kang, Yong Ho Seok, Yu Jin Noh, Bong Hoe Kim
  • Patent number: 10581455
    Abstract: A packet processing system having a barrel compactor that extracts a desired data subset from an input dataset (e.g. an incoming packet). The barrel compactor is able to selectively shift one or more of the input data units of the input dataset based on individual shift values for those data units. Additionally, in some embodiments one or more of the data units are able to be logically combined to produce a desired logical output unit.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: March 3, 2020
    Assignee: Cavium, LLC
    Inventors: Premshanth Theivendran, Weihuang Wang, Sowmya Hotha, Srinath Atluri
  • Patent number: 10574416
    Abstract: A method and user equipment for performing an uplink transmission in a wireless communication system, are discussed. The method includes allocating transmission power to a first uplink transmission and a second uplink transmission when a total power in a transmission period including at least one or more OFDM symbols exceeds maximum power, wherein each of the first and second uplink transmissions is one of physical uplink shared channel (PUSCH) transmission, physical uplink control channel (PUCCH) transmission, physical random access channel (PRACH) transmission and sounding reference signal (SRS) transmission; and performing the first and second uplink transmissions according to the allocated transmission power, wherein the allocation of the transmission power is performed according to priority information.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: February 25, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Joon Kui Ahn, Suck Chel Yang, Yun Jung Yi, Dong Youn Seo
  • Patent number: 10574486
    Abstract: A channel measurement method in a wireless communication system and an apparatus therefor are disclosed. Specifically, a method for measuring a channel by a terminal in the wireless communication system may comprise the steps of: receiving, from a base station, a reference signal on part of antenna ports within a two-dimensional antenna port array; measuring channels for the part of antenna ports on the basis of the reference signal received from the base station; and reconstructing a channel for an antenna port which is not used for transmission of the reference signal within the two-dimensional antenna port array, using the channel measurement result, to reconstruct channels for all antenna ports within the two-dimensional antenna port array.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: February 25, 2020
    Assignee: LG Electronics Inc.
    Inventors: Haewook Park, Jonghyun Park, Kijun Kim
  • Patent number: 10558261
    Abstract: In one embodiment, a method includes receiving motion data from a motion sensor during a packet-transmission interval of a wireless protocol. The motion data corresponds to a first pre-determined number of samples measured at a first sampling frequency. Each sample is associated with a first timestamp corresponding to a measurement time of that sample during the packet-transmission interval. The method also includes converting the motion data to correspond to a second pre-determined number of samples. The second pre-determined number is fewer than the first pre-determined number. The method also includes determining a second timestamp for each of the second pre-determined number of samples. The second timestamps are within the packet-transmission interval and represent measurement times at a second sampling frequency that is lower than the first sampling frequency. The method also includes combining the converted motion data and the corresponding second timestamps into a first data packet.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: February 11, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Boyang Zhang, Adrian Brian Ratter, Chengyuan Yan, Jack Hood Profit, Jr., Paul Austin Buckley
  • Patent number: 10554460
    Abstract: To provide a device, a method; and a program which are capable of further improving decoding accuracy in a case in which multiplexing/multiple-access using non-orthogonal resources is performed. A device includes: a processing unit configured to apply a second constellation corresponding to a symbol position of a first bit string in a first constellation applied to the first bit string, to a second bit string in regard to a plurality of bit strings to be multiplexed for each of transmission signal sequences to be multiplexed in resource blocks for which at least a part of frequency resources or time resources overlap.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: February 4, 2020
    Assignee: SONY CORPORATION
    Inventors: Ryota Kimura, Hiroki Matsuda
  • Patent number: 10547489
    Abstract: System and method based upon an OFDM symbol, including a cyclic prefix (CP), that is received after being transmitted over a multiple access channel, wherein the CP is removed, and a Hann window is applied to the symbol. FFT is then applied to the Hann windowed symbol to obtain the frequency domain subcarriers. The pilot symbols are filtered accordingly to obtain Hann windowed pilots to estimate effective channel. Inter-carrier interference is calculated and removed.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: January 28, 2020
    Assignee: University of South Florida
    Inventors: Berker Pekoz, Zekeriyya Esat Ankarali, Selcuk Kose, Huseyin Arslan
  • Patent number: 10548171
    Abstract: Provided is a method for performing random access, the method comprising: obtaining information associated with a phase pattern vector set and information associated with a sequence set to be used during a random access process; selecting one phase pattern vector corresponding to the number of repetitive transmissions of an RACH signal, among a plurality of phase pattern vectors included in the phase pattern vector set; transmitting, to a base station, an RACH signal during a time section corresponding to the number of repetitive transmissions of an RACH signal, at a predetermined transmission point in the entire time section corresponding to the maximum number of repetitive transmissions; and receiving, from the base station, an RACH response signal indicating an estimated sequence, an estimated phase pattern vector, and an estimated transmission point.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: January 28, 2020
    Assignee: LG Electronics Inc.
    Inventors: Kilbom Lee, Jiwon Kang, Kitae Kim, Kungmin Park, Heejin Kim
  • Patent number: 10542542
    Abstract: The present invention provides a cell configuration method of a base station in a mobile communication system supporting Carrier Aggregation (CA) which includes configuring a first cell consisting of at least two sectors formed with different antennas to a terminal, configuring a second cell consisting of at least two sectors formed with different antennas to the terminal, and communicating with the terminal through the first and second cells, wherein one of the first and second cells consists of sectors using same Physical Cell Identifier (PCID) and the other consists of sectors using different PCIDs.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: January 21, 2020
    Assignees: Samsung Electronics Co., Ltd., DEUTSCHE TELEKOM AG
    Inventors: Joseph Jeon, Jaroslav Holis, Seungjoo Maeng, Chanho An, Seunghee Han
  • Patent number: 10523485
    Abstract: An apparatus for band-limited frequency division multiplexing for uplink transmission to a base station or access point, particularly from an IoT device, comprises a signal modulator to transmit a signal over a set of contiguous equally spaced frequency sub-carriers ranging from a lowest frequency sub-carrier via intermediate sub-carriers to a highest frequency sub-carrier. The signal modulator contains a filter to apply asymmetric filtering over the range of the frequency sub-carriers, thereby to reduce a peak-to-average power ratio of the transmitted signal.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: December 31, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Doron Ezri, Shimon Shilo, Hao Tang, Jiehua Xiao, Jianmin Lu, Ori Shental, Ezer Melzer
  • Patent number: 10469295
    Abstract: In one aspect, an apparatus includes: a mixer to receive a radio frequency (RF) signal and downconvert the RF signal into a second frequency signal; an amplifier coupled to the mixer to amplify the second frequency signal; an image rejection (IR) circuit coupled to the programmable gain amplifier (PGA) to orthogonally correct a gain and a phase of the amplified second frequency signal to output a corrected amplified second frequency signal; and a complex filter to filter the corrected amplified second frequency signal.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: November 5, 2019
    Assignee: SILICON LABORATORIES INC.
    Inventors: John M. Khoury, Navin Harwalkar
  • Patent number: 10461899
    Abstract: A base station and an antenna selection method and apparatus thereof are provided. The antenna selection method includes receiving signals through multiple antennas, measuring channel information from the received signals, determining antennas having received signals whose channel information is higher than or equal to a preset threshold, and combining and processing the signals having received through the determined antennas. As a result, the base station may select an antenna enabling effective uplink communication with a user equipment among multiple antennas.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: October 29, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ikbeom Lee
  • Patent number: 10454745
    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). The present invention provides a method and a device for cancelling inter-symbol interference in a wireless communication system. A method for a base station in a wireless communication system can comprises the steps of: transmitting multiple synchronous signals through multiple antennas to a terminal; receiving information on a propagation delay difference among the multiple synchronous signals from the terminal; and determining signal transmission timing for each of the multiple antennas on the basis of the information on the propagation delay difference.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: October 22, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyunyong Lee, Jung Ju Kim, Joon-Young Lee
  • Patent number: 10425259
    Abstract: Various communication systems may benefit from identification of devices or systems using a channel. For example, certain communication systems may benefit from non-orthogonal cover code for co-channel network isolation. A method can include deciding a cover code index. The method can also include signaling the cover code index to a user equipment. The cover code index can correspond to a non-orthogonal cover code that is created in a network-specific manner.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: September 24, 2019
    Assignee: NOKIA TECHNOLOGIES OY
    Inventor: Mika Rinne
  • Patent number: 10425270
    Abstract: In one aspect, a wireless transmitter forms (1110) a first signal having a first integer number of symbol intervals in each of one or more time intervals of a predetermined length and forms (1120) a second signal having a second integer number of symbol intervals in each of the one or more time intervals of the predetermined length, the second integer number differing from the first integer number. The wireless transmitter simultaneously transmits (1130) the first and second signals in a frequency band, such that the first and second signals are frequency-domain multiplexed in the frequency band and such that a symbol interval starting time in the first signal is aligned with a corresponding symbol interval starting time in the second signal at least once per time interval.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: September 24, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Karl Werner, Robert Baldemair, Håkan Björkegren, Erik Dahlman, Stefan Parkvall
  • Patent number: 10412737
    Abstract: A method and apparatus are provided for determining a resource for an acknowledgement signal by a user equipment (UE) in a wireless communication system. Information is received for transmission of the acknowledgement signal in an operating bandwidth. A resource block (RB) is determined for transmission of the acknowledgement signal, based on the information. The acknowledge signal is transmitted on the determined RB.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: September 10, 2019
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Aris Papasakellariou, Joon-Young Cho
  • Patent number: 10411934
    Abstract: A superposition coded orthogonal frequency division multiplexing system which sets forth a comprehensive solution and deals with factors such as peak-to average power ratio (PAPR), error performance enhancement, data rate increase, synchronization or channel estimation and multi input and output (MIMO), using a joint system.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: September 10, 2019
    Assignee: ISTANBUL TEKNIK UNIVERSITESI
    Inventors: Selahattin Gokceli, Gunes Zeynep Karabulut Kurt
  • Patent number: 10411846
    Abstract: The present disclosure includes systems and techniques relating to wireless local area network devices. A described technique include accessing a data stream intended for transmission to a single wireless communication device; multiplexing the data stream to two or more radio pathways to produce a data packet; generating, via the two or more radio pathways, two or more different portions of the data packet based on an aggregated capacity of two or more wireless channels that are associated with the two or more radio pathways, the two or more radio pathways being respectively configured to use two or more groups of orthogonal frequency division multiplexing (OFDM) subcarriers to generate the two or more different portions of the data packet; and transmitting the data packet to the single wireless communication device by concurrent transmissions of the two or more different portions via the two or more wireless channels.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: September 10, 2019
    Assignee: MARVELL INTERNATIONAL LTD.
    Inventors: Hongyuan Zhang, Hui-Ling Lou, Rohit U. Nabar
  • Patent number: 10411937
    Abstract: A communication device generates a first portion of a physical layer (PHY) preamble of a PHY data unit to include a first plurality of orthogonal frequency division multiplexing (OFDM) symbols. Each OFDM symbol of the first plurality of OFDM symbols is generated with a first OFDM tone spacing. The communication device generate a second portion of the PHY preamble to include a second plurality of OFDM symbols. Each OFDM symbol of the second plurality of OFDM symbols is generated with a second OFDM tone spacing that is a fraction 1/N of the first OFDM tone spacing, where N is a positive integer greater than one. The communication device generates a PHY data portion of the PHY data unit to include one or more third OFDM symbols. Each third OFDM symbol is generated with the second OFDM tone spacing.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: September 10, 2019
    Assignee: Marvell World Trade Ltd.
    Inventors: Hongyuan Zhang, Yakun Sun, Mingguang Xu, Rui Cao, Hui-Ling Lou
  • Patent number: 10404391
    Abstract: A wireless communication device transmits data to multiple wireless terminals at the same timing. The wireless communication device includes a complement calculation part configured to calculate the amount of complement for transmission data for each wireless terminal among multiple wireless terminals on multiple subcarriers distributed and assigned thereto, a complementation part configured to complement transmission data using the amount of complement calculated for each wireless terminal, and a transmitter configured to transmit the complemented transmission data to multiple wireless terminals via multiple subcarriers. The wireless communication device further includes a frame generator configured to generate frames (e.g. OFDMA frames) used to multiplex and transmit the complemented transmission data to multiple wireless terminals. The complement calculation part calculates the amount of complement based on the number of available subcarriers, which is determined via carrier sensing.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: September 3, 2019
    Assignee: KDDI CORPORATION
    Inventors: Bingxuan Zhao, Katsuo Yunoki
  • Patent number: 10389390
    Abstract: A transmitter is provided. The transmitter includes: a low density parity check (LDPC) encoder configured to encode input bits to generate an LDPC codeword including the input bits and parity bits; a repeater configured to select at least a part of bits constituting the LDPC codeword and add the selected bits after the input bits; and a puncturer configured to puncture at least a part of the parity bits.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: August 20, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Se-ho Myung, Kyung-joong Kim, Hong-sil Jeong
  • Patent number: 10374854
    Abstract: An apparatus for receiving signals includes a receiver for receiving a time domain signal from a transmitter, wherein at least one first information bit is mapped, resulting in at least one first mapped symbol; at least one second information bit is mapped, resulting in at least one second mapped symbol; the at least one second mapped symbol is multiplied by at least one third information bit; and the time domain signal is generated from the at least one first mapped symbol and the at least one second mapped symbol.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: August 6, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Yeong Hyeon Kwon, Seung Hee Han, Min Seok Noh, Young Woo Yun
  • Patent number: 10374858
    Abstract: A transceiving system using a joined modulation alphabet A having a size M the symbols of which are distributed on a plurality N of orthogonal dimensions, the symbols carried by a dimension belonging to a linear sub-alphabet An having a size P, with M=NP. The transmitter performs a turbocoding of a block of information bits, the code words provided by the turbocoder being mapped to symbols of the joined modulation alphabet before modulating the signal to be transmitted. The receiver performs turbodecoding from the projection of the symbols received on the orthogonal dimensions of the alphabet.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: August 6, 2019
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Yoann Roth, Vincent Berg, Jean-Baptiste Dore, Laurent Ros
  • Patent number: 10374635
    Abstract: An interleaving and mapping method and a deinterleaving and demapping method for an LDPC codeword are provided. The interleaving and mapping method comprises: performing first bit interleaving on a parity bits part of the LDPC codeword to obtain interleaved parity bits; splicing an information bit part of the codeword and the interleaved parity bits into a codeword after the first bit interleaving; dividing the codeword after the first bit interleaving into multiple consecutive bit subblocks in a predetermined length, and changing the order of the bit subblocks according to a corresponding permutation order (bit-swapping pattern) to form a codeword after second bit interleaving; dividing the codeword after the second bit interleaving into two parts, and writing the two parts into storage space in a column order respectively and reading the two parts from the storage space in a row order respectively to obtain a codeword after third bit interleaving.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: August 6, 2019
    Assignee: Shanghai National Engineering Research Center of Digital Television Co., Ltd.
    Inventors: Wenjun Zhang, Yijun Shi, Dazhi He, Yunfeng Guan, Yin Xu, Xufeng Guo
  • Patent number: 10349400
    Abstract: This invention relates to the field of communication technology, and particularly to a communication exchange mechanism design based on frequency hopping, which is applicable to cognitive radio networks. A method for generating hopping frequency sequences for multi-transceiver cognitive radio networks is provided, so as to realize the optimization and tradeoff of the five performance parameters, i.e. DoR, MTTR, ATTR, CL, and NSS. That, is, for a given DoR, the frequency-hopping system should minimize the NSS of the clock synchronous and asynchronous frequency-hopping systems under the condition of MTTR=ATTR=1 and CL<1. The frequency-hopping system of the present invention can use a minimal number of transceivers at each cognitive node to ensure that any two cognitive nodes always achieve frequency hopping rendezvous in each timeslot under the limiting conditions of a certain anti-jamming ability against the primary users and a certain degree of the most serious collisions of control information exchange.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: July 9, 2019
    Assignee: University of Electronic Science and Technology of China
    Inventors: Xuesong Tan, Jieran Wang, Yifan Wang
  • Patent number: 10341030
    Abstract: A receiver architecture and method recovers data received over an optical fiber channel in the presence of cycle slips. In a first cycle slip recovery architecture, a receiver detects and corrects cycle slips based on pilot symbols inserted in the transmitted data. In a second cycle slip recovery architecture, a coarse cycle slip detection is performed based on pilot symbols and a cycle slip position estimation is then performed based on carrier phase noise. The receiver compensates for cycle slips based on the position estimation.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: July 2, 2019
    Assignee: INPHI CORPORATION
    Inventors: Mario Alejandro Castrillon, Damian Alfonso Morero, Mario Rafael Hueda
  • Patent number: 10320419
    Abstract: An encoding method, decoding method, encoding device and decoding device for structured LDPC codes. The method includes: determining a basic matrix used for encoding, which includes K0 up-and-down adjacent pairs; and according to the basic matrix and an expansion factor corresponding to the basic matrix, performing an LDPC encoding operation of obtaining a codeword of Nb×z bits according to source data of (Nb?Mb)×z bits, herein z is the expansion factor, and z is a positive integer which is greater than or equal to 1. The provided technical solution is applicable to the encoding and decoding of the structured LDPC, thereby realizing the encoding and decoding of LDPC at the high pipeline speed.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: June 11, 2019
    Assignee: ZTE Corporation
    Inventors: Jun Xu, Liguang Li, Zhifeng Yuan, Jin Xu, Kaibo Tian
  • Patent number: 10305535
    Abstract: A radio receiver for processing digital chirp spread-spectrum modulated signals that comprise a plurality of frequency chirps that are cyclically time-shifted replicas of a base chirp profile, said time-shifts being an encoded representation of a transmitted message. Includes a soft demapping unit that is adapted for working on fully populated as well as on partial modulation sets, and implements a timing error correction loop that acts back both in the time domain and in the frequency domain.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: May 28, 2019
    Assignee: Semtech Corporation
    Inventors: Olivier Bernard André Seller, Nicolas Sornin
  • Patent number: 10237753
    Abstract: Disclosed are a frame transmission method using a selective beamforming and a communication apparatus to perform the frame transmission method. The communication apparatus may determine a beamforming matrix based on classification information in which a plurality of subcarriers used for communication is classified into a plurality of frequency units, may map a long training field (LTF) sequence to the beamforming matrix, and transmit a beamforming training (BF-T) frame including the mapped LTF sequence to a plurality of stations, may receive, from the plurality of stations having receiving the BF-T frame, feedback information generated based on a reception strength of the BF-T frame, and may allocate frequency units to data frames to be transmitted to the plurality of stations based on the feedback information, and transmit the data frames using the allocated frequency units. The reception strength of the BF-T frame may be determined at each station for each frequency unit.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: March 19, 2019
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Yu Ro Lee, Jae Woo Park, Jae Seung Lee, Jee Yon Choi, Il Gyu Kim, Seung Chan Bang
  • Patent number: 10230509
    Abstract: A first radio signal is received that was transmitted from a first antenna at a transmitter and a second radio signal transmitted from a second antenna at the transmitter different from the first antenna. The first radio signal is converted to a first orthogonal frequency division multiplexing (OFDM) frame signal, and the second radio signal is converted to a second OFDM frame signal. The first OFDM frame signal includes a grid of multiple frequency subcarriers and time periods, each time period with the frequency carriers corresponding to a first OFDM symbol such that the first OFDM frame includes first OFDM symbols. A first OFDM symbol is carried on frequency subcarriers during a time period, and the first OFDM frame includes first reference OFDM symbols located at corresponding time-frequency resource elements in the grid. Each resource element is defined by a one of the frequency subcarriers and one of the time periods.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: March 12, 2019
    Assignee: Optis Wireless Technology, LLC
    Inventors: Yutaka Murakami, Masayuki Orihashi, Akihiko Matsuoka, Yoichi Nakagawa
  • Patent number: 10225838
    Abstract: Some demonstrative embodiments include devices, systems and/or methods of wireless communication over non-contiguous channels. For example, a device may include a wireless communication unit capable of transmitting symbols of a wireless communication packet to a wireless communication device over a plurality of non-contiguous wireless communication channels.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: March 5, 2019
    Assignee: INTEL CORPORATION
    Inventors: Solomon Trainin, Assaf Kasher
  • Patent number: 10211954
    Abstract: An orthogonal frequency division multiple access (OFDMA) frame tone allocation includes a 256 tone payload consisting of 228 data and pilot tones and 28 null tones. The 28 null tones consist of guard tones and at least one direct current (DC) tone. In one example, the 256 tone payload consists of 224 data tones, 4 common pilot tones, and 28 null tones. In another example, the 256 tone payload consists of 222 data tones, 6 common pilot tones, and 28 null tones. In yet another example, the 256 tone payload may consist of 220 data tones, 8 common pilot tones, and 28 null tones. The OFDMA frame may be a downlink OFDMA frame or an uplink OFDMA frame.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: February 19, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jung Hoon Suh, Osama Aboul-Magd