Transmitters Patents (Class 375/295)
  • Patent number: 11128419
    Abstract: A base station transmits low-density configuration information and high-density configuration information on a channel state information-reference signal (CSI-RS) of a beam. A user equipment performs beam measurement, using a CSI-RS received on the basis of the low-density configuration information (hereinafter, a low-density CSI-RS), and performs time tracking, using a CSI-RS received on the basis of the high-density configuration information (hereinafter, a high-density CSI-RS). At least in a frequency domain, the high-density CSI-RS is configured to have a higher density than that of the low-density CSI-RS.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: September 21, 2021
    Assignee: LG Electronics Inc.
    Inventors: Sukhyon Yoon, Kijun Kim, Hyunsoo Ko
  • Patent number: 11121830
    Abstract: Provided is a communication system that can sustain a reduction in delay in FFT/IFFT processing by code blocking user data, even in a case where the functions of upper layers such as a MAC scheduler and the function of the radio physical layer are implemented separately. In a radio base station (communication system) including a central aggregation device 210 and a remote device 220, the central aggregation device 210 transmits code blocks in a number necessary for generating an OFDM symbol as a piece of data to the remote device 220, the code blocks being produced by dividing user data into units of encoding processing.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: September 14, 2021
    Assignee: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Naoto Ookubo, Anil Umesh
  • Patent number: 11121680
    Abstract: An all-digital transmitter (ADT) is provided. The ADS includes a baseband interface configured to store and transmit an (baseband) input signal at a corresponding frequency band, a polyphase finite impulse response filter configured to receive and convert the baseband input signal into different phases, a digital upconverter configured to upconvert each of the different phase baseband input signal to a predetermined carrier frequency in a digital domain, a set of multi-core 2-dimensional network-resonant digital plane wave beamfilters, wherein each of the multi-core 2D NR-DPW beamfilters is configured to transmit the upconverted baseband input signal by a target angle, a multi-core delta-sigma modulator configured to encode the upconverted input signal into pulsating signals, and a serializer configured to serialize the encoded pulsating signals into a RF bitstream.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: September 14, 2021
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Rui Ma, Sravan Kumar Pulipati
  • Patent number: 11119692
    Abstract: A method of operating a controller which controls a nonvolatile memory device includes enabling a command latch enable signal, an address latch enable signal, and a write enable signal and transmitting multiple data signals including a command and an address to the nonvolatile memory device in synchronization with the enabled write enable signal. A number of DQ lines through which the plurality of data signals are transmitted is greater than a number of bits of each of the data signals. The method also include disabling the command latch enable signal after the command is transmitted, and disabling the address latch enable signal and the write enable signal after the address is transmitted.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: September 14, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyeonwu Kim, Daekyoung Kim, Seok-Won Ahn, Chanho Yoon
  • Patent number: 11115249
    Abstract: Transmission of baseband and carrier-modulated vector codewords, using a plurality of encoders, each encoder configured to receive information bits and to generate a set of baseband-encoded symbols representing a vector codeword; one or more modulation circuits, each modulation circuit configured to operate on a corresponding set of baseband-encoded symbols, and using a respective unique carrier frequency, to generate a set of carrier-modulated encoded symbols; and, a summation circuit configured to generate a set of wire-specific outputs, each wire-specific output representing a sum of respective symbols of the carrier-modulated encoded symbols and at least one set of baseband-encoded symbols.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: September 7, 2021
    Assignee: KANDOU LABS, S.A.
    Inventors: Ali Hormati, Armin Tajalli, Amin Shokrollahi
  • Patent number: 11115248
    Abstract: There is disclosed a method of operating a radio node in a wireless communication network. The method includes communicating utilising signaling, wherein communicating utilising signaling is based on performing pulse-shaping pertaining to the signaling. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: September 7, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Jung-Fu Cheng, Mehrnaz Afshang, Ning He, Dennis Hui
  • Patent number: 11115253
    Abstract: Provided are a method and a device for transmitting uplink data by using a non-orthogonal code multiple access scheme in a wireless communication system. Particularly, a terminal receives control information from a base station. The terminal selects a terminal-specific codeword or receives allocation information of the terminal-specific codeword on the basis of the control information. The terminal transmits uplink data by using the terminal-specific codeword. The terminal-specific codeword is determined as a codeword having a value with a low peak-to-average power ratio (PAPR), when the terminal is located on the outside of a cell. The terminal-specific codeword is determined as a codeword having a value with a high PAPR, when the terminal is located in the center of the cell.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: September 7, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Hojae Lee, Sangrim Lee
  • Patent number: 11115172
    Abstract: Disclosed are a method for transmitting and receiving multicast/broadcast data in a wireless communication system, and an apparatus therefore.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: September 7, 2021
    Assignee: LG Electronics Inc.
    Inventors: Jonghyun Park, Hanbyul Seo
  • Patent number: 11108521
    Abstract: The present disclosure relates to a 5G or pre-5G communication system to be provided for supporting a data rate higher than that of a 4G communication system, such as LTE, and subsequent communication systems. The present disclosure relates to a method for transmitting a reference signal (RS) in a wireless communication system, comprising the steps of: configuring a transmission resource by including at least one resource block (RB), which does not map the RS, between two RBs, which map the RS, in a first subframe; transmitting a first message for directing an RB offset indicating a gap between the two RBs, which map the RS, and locations of the RBs, which map the RS; and transmitting the RS through the configured transmission resource.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: August 31, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Keon-Kook Lee, Tae-Young Kim, Ji-Yun Seol, Su-Ryong Jeong, Jae-Seung Son, Byung-Moo Lee
  • Patent number: 11108363
    Abstract: An envelope tracking (ET) circuit and related power amplifier apparatus is provided. An ET power amplifier apparatus includes an ET circuit and a number of amplifier circuits. The ET circuit is configured to provide a number of ET modulated voltages to the amplifier circuits for amplifying concurrently a number of radio frequency (RF) signals. The ET circuit includes a target voltage circuit for generating a number of ET target voltages adapted to respective power levels of the RF signals and/or respective impedances seen by the amplifier circuits, a supply voltage circuit for generating a number of constant voltages, and an ET voltage circuit for generating the ET modulated voltages based on the ET target voltages and a selected one of the constant voltages. By employing a single ET circuit, it may be possible to reduce the footprint and improve heat dissipation of the ET power amplifier apparatus.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: August 31, 2021
    Assignee: Qorvo US, Inc.
    Inventor: Nadim Khlat
  • Patent number: 11109176
    Abstract: A method, apparatus and computer program including obtaining a first audio signal from at least a first microphone located at a first distance from an audio source; obtaining a local audio signal from a local microphone wherein the local microphone is located closer to the audio source than the first microphone; identifying the audio source using the first audio signal and the local audio signal; using the identified audio source to determine a delay between the first audio signal and the local audio signal: and using the determined delay to determine the length of the first audio signal and the local audio signal to be made available for processing so as to enable temporal alignment of at least the first audio signal and the local audio signal.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: August 31, 2021
    Assignee: Nokia Technologies Oy
    Inventors: Sujeet Shyamsundar Mate, Lasse Laaksonen
  • Patent number: 11102736
    Abstract: Aspects of the present disclosure include methods, apparatuses, and computer readable media for inserting an offset between a channel resource element of a channel resource block and a synchronization resource element of a synchronization signal block, transmitting a bandwidth value of the offset to a user equipment.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: August 24, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Valentin Alexandru Gheorghiu, Masato Kitazoe, Peter Gaal
  • Patent number: 11095408
    Abstract: Disclosed is a reference signal transmission method and a device. The method includes converting, by a sending device, a frequency domain reference signal from frequency domain to time domain, to generate a time domain reference signal. The frequency domain reference signal includes a reference signal sequence mapped to a frequency domain resource. The reference signal sequence is determined based on a Zadoff-Chu (ZC) sequence, and a length value of the ZC sequence is selected from at least two length values. The method includes sending, by the sending device, the time domain reference signal. According to the reference signal transmission method, one ZC sequence is selected from at least two ZC sequences with different lengths to generate the reference signal sequence, so that the generated reference signal sequence is characterized by a low PAPR and an low RCM, and is used to generate a reference signal, to improve data transmission performance.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: August 17, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yuanzhou Hu, Mengying Ding, Zongjie Wang
  • Patent number: 11096153
    Abstract: In a wireless frame transmission method by an access point (AP) in a wireless LAN system, according to an embodiment of the present invention, a wireless frame, comprising a signaling field and a data field, is generated in the AP, wherein the signaling field comprises a first signaling field (SIG A field), having first common control information about a plurality of STAs, and a second signaling field (SIG B field) having individual control information for each of the plurality of STAs. The second signaling field comprises a common field, having second common control information about the plurality of STAs, and an individual field following the common field and having individual control information for each of the STAs.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: August 17, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Dongguk Lim, Jinsoo Choi, Hangyu Cho, Jinmin Kim, Eunsung Park
  • Patent number: 11095304
    Abstract: Quantisation methods are provided which employ dither techniques to reduce the noise penalty in certain circumstances whilst still removing noise modulation. One method relates to reducing the wordwidth of audio by one bit, while another method relates to burying one bit of data in a pair of signal samples.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: August 17, 2021
    Assignee: MQA Limited
    Inventors: Peter Graham Craven, Malcolm Law
  • Patent number: 11088789
    Abstract: According to one embodiment, a signal quality monitoring apparatus includes a signal processor, a comparator and a determiner. The processor obtains output signals from a first transmitter and a second transmitter which are mutually redundant and respectively reproduce digital broadcast signals based on a common origin signal, and generates a first signal based on the output signal from the first transmitter and a second signal based on the output signal from the second transmitter. The comparator compares the first signal and the second signal. The determiner determines a quality of the digital broadcast signal based on a result of the comparison.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: August 10, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Kenichi Matsushita, Mikihiko Iwaida, Noboru Taga, Hideki Ono
  • Patent number: 11079881
    Abstract: A signal processing circuit for processing a sensing signal from a sensor includes an amplifier, an input capacitor group, a compensation capacitor group and first/second switch groups. The amplifier, coupled to a first floating node and a second floating node, is configured to amplify the sensing signal coupled from the first floating node and the second floating node. The first switch group is coupled between a first node group and the first and second floating nodes. The second switch group is coupled between a second node group and the first node group. The input capacitor group is coupled to the second node group and an input node group, and configured to receive the sensing signal coupled from the input node group. The compensation capacitor group is coupled between a compensation node group and the second node group, and configured to receive a compensation signal coupled from the compensation node group.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: August 3, 2021
    Assignee: NOVATEK Microelectronics Corp.
    Inventor: Min Huang
  • Patent number: 11075784
    Abstract: The present disclosure is directed a wideband multiphase transmitter with two-point modulation. A transmitter includes a control circuit configured to receive a source signal having amplitude and phase components. Using the phase component, the control circuit generates a frequency control signal and a phase jump signal. The transmitter further includes a phase conversion circuit configured to generate a first phase-modulated signal using the phase component and the frequency control signal. The phase conversion circuit is also configured to adjust the phase of the first phase-modulated signal using the phase jump signal. The first phase-modulate signal and the amplitude component are provided to an amplifier, which generates a transmit signal based thereon.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: July 27, 2021
    Assignee: Apple Inc.
    Inventors: Mark T. Dawkins, Yi-An Li, Yen-Ling Huang
  • Patent number: 11070406
    Abstract: There is disclosed a method of operating a radio node in a wireless communication network. The method includes communicating utilising signaling, wherein communicating utilising signaling is based on performing pulse-shaping pertaining to the signaling. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: July 20, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Jung-Fu Cheng, Mehrnaz Afshang, Ning He, Dennis Hui
  • Patent number: 11071168
    Abstract: In the present disclosure, an access point obtains a current network feature and generates a matching rule and an access rule, so that a station performs uplink access according to the matching rule and the access rule. This resolves a prior-art problem of reduced quality of service of a high-priority service because in an EDCA protocol, when there are relatively many low-priority service nodes, the high-priority service has difficulty in obtaining a resource through contention, or a conflict occurs between a low-priority packet and a high-priority packet. Effects of ensuring quality of service and user experience are achieved.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: July 20, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Mao Yang, Zhongjiang Yan, Yanchun Li
  • Patent number: 11063866
    Abstract: A method by an access point in a wireless local area network to solicit an immediate acknowledgement from a station in the wireless local area network. The method includes generating and transmitting a downlink multi-user physical layer protocol data unit that includes a frame for which the access point solicits an immediate response from the station in an uplink multi-user transmission, wherein an ACK Policy field of the frame is set to a binary value of ‘01’ to indicate that the station is to provide an immediate acknowledgement for the frame to the access point if the station receives trigger information included in the downlink multi-user physical layer protocol data unit and the station is not to provide an immediate acknowledgement for the frame if the station does not receive trigger information included in the downlink multi-user physical layer protocol data unit.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: July 13, 2021
    Assignee: Atlas Global Technologies LLC
    Inventor: Yongho Seok
  • Patent number: 11063643
    Abstract: The present disclosure provides a method and device in UE and base station used for wireless communications. The UE receives first information, the first information being used for indicating a first precoding matrix; and transmits a first radio signal through a first antenna port group within a first time-domain resource in a first sub-band, or, drops wireless transmission through a first antenna port group within a first time-domain resource in a first sub-band. The first precoding matrix is used for determining K transmission parameter groups, K being a positive integer greater than 1; a first transmission parameter group is one of the K transmission parameter groups, and the first transmission parameter group is used for generating the first antenna port group, the first antenna port group comprising a positive integer number of antenna port(s). The method helps enhance the chance of uplink channel access, thereby improving the system capacity.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: July 13, 2021
    Assignee: SHANGHAI LANGBO COMMUNICATION TECHNOLOGY COMPANY LIMITED
    Inventors: Xiaobo Zhang, Lin Yang
  • Patent number: 11057086
    Abstract: In a closed-loop wireless communication system, a codebook-based feedback mechanism is provided to enable non-unitary precoding for multi-stream transmission, where each stream is optimized with suitable transmission power allocation and AMC. The codebook-based feedback mechanism uses a precoding codebook having a power allocation matrix which is constrained to specify that beamforming always applies full power to a predetermined beam. With this constraint, a one-bit power allocation feedback index may be used to switch between beamforming and spatial multiplexing.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: July 6, 2021
    Assignee: Apple Inc.
    Inventors: Jayesh H. Kotecha, Kaibin Huang
  • Patent number: 11050532
    Abstract: A bit-level operation may be implemented prior to modulation and resource element (RE) mapping in order to generate a NoMA transmission using standard (QAM, QPSK, BPSK, etc.) modulators. In this way, the bit-level operation is exploited to achieve the benefits of NoMA (e.g., improved spectral efficiency, reduced overhead, etc.) at significantly less signal processing and hardware implementation complexity. The bit-level operation is specifically designed to produce an output bit-stream that is longer than the input bit-stream, and that includes output bit-values that are computed as a function of the input bit-values such that when the output bit-stream is subjected to modulation (e.g., m-ary QAM, QPSK, BPSK), the resulting symbols emulate a spreading operation that would otherwise have been generated from the input bit-stream, either by a NoMA-specific modulator or by a symbol-domain spreading operation.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: June 29, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Ming Jia, Jianglei Ma, Alireza Bayesteh, Sanjeewa Herath
  • Patent number: 11038642
    Abstract: A method and a device for determining dynamically a pilot pattern are provided. The method includes acquiring a TTI duration occupied by transmission of data, and determining a pilot pattern according to the TTI duration occupied by the transmission of the data.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: June 15, 2021
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Xuejuan Gao, Fangchen Cheng, Xueming Pan
  • Patent number: 11031979
    Abstract: A transceiver apparatus for wireless communication includes components coupled to one another to form transmit chains for wireless communications. The components forming the transmit chains include power amplifiers (PA)s each coupled at a respective signal input to a corresponding one of the transmit chains for amplifying radio frequency (RF) signals of a wireless communication link and each power amplifier having a supply voltage input for powering the power amplifier, voltage sources having distinct voltage levels, and PA supply voltage detectors each coupled at an input to an associated one of the transmit chains to detect changes in an amplitude of the signal on each transmit chain. The transceiver apparatus includes a link power circuit coupled to the PA supply voltage detectors, the link power circuit to determine maximum voltage levels to be applied to the supply voltage inputs of the PAs.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: June 8, 2021
    Assignee: QUANTENNA COMMUNICATIONS, INC.
    Inventors: Leonardo Mitsuyuki, Kyle Zukowski, Cristiano Benevento, Didier Margairaz
  • Patent number: 11031980
    Abstract: The invention discloses a method and an apparatus for forming a power-efficient digital-analog hybrid beam in a multi-antenna system, and a device. The method includes the following steps. Perform mathematical modeling on a beam forming design firstly to construct a beam forming optimization problem that minimizes ripples in a main lobe and a side lobe. Convert an original optimization problem into an a constraint-separable optimization problem using a penalty function method. Perform iterative solution finally using a block coordinate descent method. The beam designed by the invention has a small peak-to-average ratio, a power amplification efficiency of a power amplifier is very high, and a limited resolution characteristic of the phase shifter is considered. The ripples in the main lobe and the side lobe of the beam designed are very small and a transition band is very narrow.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: June 8, 2021
    Assignee: SOUTHEAST UNIVERSITY
    Inventors: Yongming Huang, Jianjun Zhang
  • Patent number: 11025470
    Abstract: A method of encoding data includes identifying multiple complex number pairs of a data vector and generating a transformed data vector by applying a non-linear transformation to each complex number pair from the multiple complex number pairs. The non-linear transformation includes modifying a phase of a first complex number from each complex number pair. The phase modification is based on a value associated with a second complex number from each complex number pair. A signal representing the transformed data vector is sent to multiple transmitters for transmission to multiple receivers. A signal representing the non-linear transformation is sent to a compute device for transmission of the non-linear transformation to the multiple receivers prior to transmission of the signal representing the transformed data vector from the multiple transmitters to the multiple receivers, for recovery of the data vector at the multiple receivers.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: June 1, 2021
    Assignee: Rampart Communications, Inc.
    Inventor: Matthew Brandon Robinson
  • Patent number: 11025326
    Abstract: Herein described are apparatuses, systems, and methods for measurement and reporting of channel state information within wireless network systems. In embodiments, an apparatus for a user equipment (UE) may include memory to store a rank indicator (RI), a precoding matrix index (PMI), and a channel quality indicator (CQI) of channel state information (CSI) for the UE. The apparatus may further include circuitry to concatenate the RI, the PMI, and the CQI to produce a concatenated CSI element, generate a CSI report that includes the concatenated CSI element, and cause the CSI report to be transmitted to a base station within a single slot. Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: June 1, 2021
    Assignee: Apple Inc.
    Inventors: Alexei Davydov, Sameer Pawar, Wook Bong Lee, Yushu Zhang, Victor Sergeev, Joonyoung Cho, Dmitry Dikarev
  • Patent number: 11018678
    Abstract: The present invention relates to a field programmable gate array system that provides phase control with minimal latency.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: May 25, 2021
    Inventor: Nima Badizadegan
  • Patent number: 11018826
    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method for transmitting reference signals is provided. In the method, a transmitting apparatus inserts at least one physical resource block for reducing reference signal overheads between adjacent first physical resource blocks, and then transmits first physical resource blocks and the at least one physical resource block for reducing the reference signal overheads.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: May 25, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Pengfei Sun, Bin Yu, Chen Qian
  • Patent number: 11018912
    Abstract: A method and apparatus for using Euclidean modulation in an antenna are disclosed. In one embodiment, a method for controlling an antenna comprises mapping a desired modulation to achievable modulation states, mapping modulation values associated with the achievable modulation states to one or more control parameters, and controlling radio frequency (RF) radiating antenna elements using the one or more control parameters to perform beam forming.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: May 25, 2021
    Assignee: KYMETA CORPORATION
    Inventors: Patrick Bowen, Nathan Kundtz
  • Patent number: 11018738
    Abstract: This application provides a communication method, to provide a codebook of a higher-order precoding matrix, and help increase a quantity of layers of data, thereby helping improve a data transmission capability and improving a throughput. The method includes: receiving, by a first device, a reference signal used for channel measurement; and sending, by the first device, at least one precoding matrix indicator PMI and a rank indication RI based on the reference signal, where the PMI is used to indicate a precoding matrix in a codebook corresponding to the RI, the precoding matrix in the codebook includes a plurality of matrices in a one-to-one correspondence with a plurality of antenna port groups, a matrix corresponding to one antenna port group or each of at least two antenna port groups has two different inter-antenna-port-group phase factors, and any two column vectors in the precoding matrix are orthogonal to each other.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: May 25, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yi Huang, Haibao Ren, Yuanjie Li
  • Patent number: 11018775
    Abstract: An optical transmitter, an optical receiver, and an optical transmission method are disclosed. The optical transmitter includes an optical signal generator, N spreaders, N pairs of data modulators, and a combiner, where the optical signal generator generates N optical carriers; an ith spreader spreads an ith optical carrier, to obtain a spread optical signal having two subcarriers; splits the spread optical signal into a first optical signal and a second optical signal; and delays the second optical signal to obtain a third optical signal; an ith pair of data modulators modulate the first optical signal and the third optical signal to obtain a pair of modulated optical signals, transmit the pair of modulated optical signals to the combiner, where the pair of modulated optical signals reaching the combiner differ by 1/(4 fsi) in time domain; and the combiner combines, into one optical signal, N pairs of modulated optical signals.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: May 25, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yi Yu, Yuanda Huang, Liangchuan Li, Xie Wang
  • Patent number: 11018810
    Abstract: Systems and methods for an adaptive multiple Hybrid Automatic Repeat Request (HARQ) entity design to enable dynamic soft buffer sharing between HARQ entities are disclosed. In some embodiments, a transmitter estimates the total buffer consumption of the receiver. In response to determining that there is enough unused space in the soft buffer of the receiver for the new HARQ process of the HARQ entity, the transmitter assigns the new HARQ process of the HARQ entity for data transmission to the receiver. In this way, HARQ entity specific configurations may be enabled while increasing dynamic soft buffer sharing efficiency.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: May 25, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Rui Fan, Jinhua Liu
  • Patent number: 11018740
    Abstract: The application relates to a method for antenna port indication. A terminal receives information indicating an antenna port set of a pilot from a base station. The antenna port set is used for a resource block (RB) set and the pilot is used for data demodulation. And the terminal determines the antenna port set based on the received information. By implementing the solution in the application, transmission resource utilization is improved.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: May 25, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhongfeng Li, Ning Wu, Yongzhao Cao
  • Patent number: 11019303
    Abstract: An apparatus and method for broadcast signal frame using layered division multiplexing are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling, size information of Physical Layer Pipes (PLPs) and time interleaver information shared by the core layer signal and the enhanced layer signal.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: May 25, 2021
    Assignee: Electronics and telecommunications research institute
    Inventors: Jae-Young Lee, Sung-Ik Park, Sun-Hyoung Kwon, Heung-Mook Kim
  • Patent number: 11018804
    Abstract: Methods, systems, and devices for encoding and decoding are described. To encode a vector, an encoder allocates information bits of the vector to channel instances of a channel that are separated into groups. The groups may vary in size and allocation of the information bits is based on a base sequence of a given length. During decoding, a decoder assigns different bit types to channels instances by dividing a codeword into a plurality of groups and assigning bit types to channel instances of the plurality of groups using the base sequence.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: May 25, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Jing Jiang, Gabi Sarkis, Yang Yang, Shrinivas Kudekar, Joseph Binamira Soriaga, Hari Sankar, Changlong Xu, Chao Wei
  • Patent number: 11013039
    Abstract: Embodiments provide a method for generating a random access channel ZC sequence, and an apparatus. A method for generating a random access channel ZC sequence includes: generating, by a base station, notification signaling, where the notification signaling instructs user equipment (UE) to generate a random access ZC sequence by using a second restricted set in a random access set; and sending, by the base station, the notification signaling to the UE, so that the UE generates the random access ZC sequence by using the second restricted set, where the random access set includes an unrestricted set, a first restricted set, and the second restricted set; and the second restricted set is a random access set that the UE needs to use when a Doppler frequency shift of the UE is greater than or equal to a first predetermined value.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: May 18, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Qiang Wu, Zhiheng Guo, Jianqin Liu, Jianghua Liu, Leiming Zhang
  • Patent number: 11012201
    Abstract: A transmission module is provided that includes a transmitter, a loopback receiver, and a QEC controller. The QEC controller identifies quadrature imbalance in the transmitter based at least one a comparison of the data signals at the output of the loopback receiver with data signals at the input of the transmitter. Based on the comparison, the QEC controller can adjust one or more characteristics of the transmitter to correct quadrature errors in the transmitter.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: May 18, 2021
    Assignee: Analog Devices, Inc.
    Inventors: Raju Hormis, Steven R. Bal, Antonio Montalvo, David J. McLaurin, Martin McCormick
  • Patent number: 11005452
    Abstract: A control circuit (16) is configured to detect the impedance P1 of a load (3) and control each of the reactance value L1 of a first variable reactance element (12), the reactance value L2 of a second variable reactance element (14), and the phase shift amount ? of a phase shifter (15) on the basis of the detected impedance P1. Consequently, impedance matching can be achieved even with the phase shifter (15) that performs discrete phase shift control.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: May 11, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Dai Ninomiya, Eigo Kuwata, Hiroyuki Nonomura
  • Patent number: 11005619
    Abstract: A bit-level operation may be implemented prior to modulation and resource element (RE) mapping in order to generate a NoMA transmission using standard (QAM, QPSK, BPSK, etc.) modulators. In this way, the bit-level operation is exploited to achieve the benefits of NoMA (e.g., improved spectral efficiency, reduced overhead, etc.) at significantly less signal processing and hardware implementation complexity. The bit-level operation is specifically designed to produce an output bit-stream that is longer than the input bit-stream, and that includes output bit-values that are computed as a function of the input bit-values such that when the output bit-stream is subjected to modulation (e.g., m-ary QAM, QPSK, BPSK), the resulting symbols emulate a spreading operation that would otherwise have been generated from the input bit-stream, either by a NoMA-specific modulator or by a symbol-domain spreading operation.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: May 11, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Ming Jia, Jianglei Ma, Alireza Bayesteh, Sanjeewa Herath
  • Patent number: 11003142
    Abstract: Systems and methods are described for determining a phase measurement difference between a received modulated signal and a local clock signal. An adjusted local clock phase measurement may be determined by subtracting, from the phase measurement difference, a phase correction that is based on the frequency difference between the modulator signal's carrier frequency and the local clock's frequency. A phase modulation value may be generated by scaling the adjusted local clock phase measurement. The scaling may be based on a ratio of the modulated signal's carrier frequency and the local clock's frequency. The phase correction may be based on (i) a count of periods of the modulated signal occurring between each corrected phase measurement and (ii) a difference between the carrier frequency and the local clock frequency.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: May 11, 2021
    Assignee: INNOPHASE INC.
    Inventor: Nicolo Testi
  • Patent number: 10999808
    Abstract: A method and a device configured for selecting a transmission parameter in a wireless communication network are disclosed. According to one aspect, at least one transmission parameter is selected based at least upon an estimated level of synchronization for the first wireless device.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: May 4, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Ricardo Blasco Serrano, Stefano Sorrentino
  • Patent number: 10998968
    Abstract: An EnodeB or a transmitting device intermittently generates synchronization signals, and then performs perfect omnidirectional pre-coding processing on the synchronization signals; the synchronization signals after perfect omnidirectional pre-coding processing pass through a transmission channel and are then received by a mobile terminal or a receiving device, and the mobile terminal or the receiving device uses the received synchronization signals and local replicas of the synchronization signals for receiving and synchronization processing. An EnodeB or a transmitting device generates vector signals via low-dimensional space-time coding, and then performs perfect omnidirectional pre-coding processing on the vector signals; the transmitted signals after perfect omnidirectional pre-coding processing pass through a transmission channel and are then received by a mobile terminal or a receiving device, and the mobile terminal or the receiving device uses the received signals for signal receiving processing.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: May 4, 2021
    Assignee: SOUTHEAST UNIVERSITY
    Inventors: Xiqi Gao, Xin Meng
  • Patent number: 10992370
    Abstract: Provided is control information related to polarizations of antennas for MISO communication. The control signal generator generates polarization information indicating whether antennas used for transmission by MISO have only a first polarization or have a second polarization as well as the first polarization. With this structure, the present invention allows for the use of combinations of SISO, MISO and MIMO, taking the polarization of antennas. Furthermore, the present invention enables the receiver to reduce the power consumption.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: April 27, 2021
    Assignee: SUN PATENT TRUST
    Inventors: Mikihiro Ouchi, Yutaka Murakami, Tomohiro Kimura
  • Patent number: 10986621
    Abstract: Disclosed are a method, device and system for determining a coding modulation parameter. The method includes: a terminal receives downlink control information from a base station, and determines a coding modulation parameter according to a domain, within the downlink control information, used for determining the coding modulation parameter. In the present invention, a coding modulation parameter is determined according to a domain, within downlink control information, used for determining the coding modulation parameter, thereby implementing coding modulation parameter determination for an NB-IOT system.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: April 20, 2021
    Assignee: ZTE CORPORATION
    Inventors: Jun Xu, Bo Dai, Jin Xu, Zewei Chen, Huiying Fang
  • Patent number: 10979259
    Abstract: The present disclosure provides a communication device and a skew correction method thereof. The communication device includes a first signal transceiving device and a correction device. The correction device is coupled to the first signal transceiving device through multiple first channels in a correction mode, each of the first channels has multiple first sub-channels. In the correction mode, the first signal transceiving device simultaneously transmits multiple first data through all the first sub-channels of first channels, and the correction device receives the first data through all the first sub-channels to calculate first skew differences of all the first sub-channels, thus calculating first skew differences according to the first skew values.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: April 13, 2021
    Assignee: MONTAGE TECHNOLOGY CO., LTD.
    Inventors: Jun Ma, Dan Wang, Zhongyuan Chang, Xin Liu
  • Patent number: 10980017
    Abstract: Improved downlink control information decoding is disclosed herein. Downlink control information, can be in different formats depending on the rank of transmission from the network to the user equipment device. For instance, if the transmission rank is between 1 and 4, the transmission will be a single codeword transmission, while a rank of 5-8 can have two codewords. The downlink control information can have a different format, or structure depending on the number of codewords. The user equipment device can predict whether a single codeword transmission or a multicode codeword transmission is more likely, and attempt to decode the downlink control information using the corresponding format. If the first pass is unsuccessful, the user equipment device can make a second pass decoding based on the alternate format of downlink control information.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: April 13, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventor: SaiRamesh Nammi
  • Patent number: 10979197
    Abstract: Embodiments herein relate to a method performed by a transmitting device (120) for handling communication in a wireless communications network, wherein the transmitting device (120) comprises at least two radio link control, RLC, entities and is configured with a split bearer to a receiving device (100). The transmitting device (120) identifies that a last transmitted protocol data unit, PDU, of one of the at least two RLC entities, is lacking a poll indicator requesting a status of one or more transmitted PDUs. When identifying that the last transmitted PDU lacks the poll indicator, the transmitting device transmits to the receiving device (100), a PDU comprising a poll indicator.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: April 13, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Martin Skarve, Torsten Dudda, Torbjörn Örtengren, Samir Shah, Mikael Wittberg