Plural Diversity Patents (Class 375/299)
  • Patent number: 11515969
    Abstract: Methods described herein are for wireless communication systems. One aspect of the invention is directed to a method for a HARQ process, in which the HARQ process includes a first transmission of an encoder packet and at least one retransmission. The method involves allocating a transmission resource for each respective transmission. The method involves transmitting control information from a base station to a mobile station for each respective transmission. The control information includes information to uniquely identify the HARQ process and an identification of one of a time resource, a frequency resource and a time and frequency resource that is allocated for the transmission. In some embodiments of the invention, specific control information is signalled from a base station to a mobile station to enable RAS-HARQ operation. In some embodiments of the invention, retransmission signaling in included as part of regular unicast signaling used for both first transmission and retransmissions.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: November 29, 2022
    Assignee: Apple Inc.
    Inventors: Mo-han Fong, Sophie Vrzic, Robert Novak, Jun Yuan, Dong-Sheng Yu
  • Patent number: 11496122
    Abstract: A phase rotator calibration system is provided. The phase rotator calibration system includes a phase rotator portion having input for receiving an input signal and an output for providing an output signal. A calibration portion is coupled to the phase rotator portion. The calibration portion is configured to determine a phase error based on a phase estimation. The phase estimation is generated by way of an arccosine function.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: November 8, 2022
    Assignee: NXP USA, Inc.
    Inventors: Dominique Delbecq, Olivier Vincent Doaré, Julien Orlando
  • Patent number: 11483194
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a random access preamble to a base station as part of a two-step random access procedure. The UE may generate the preamble by identifying a discrete Fourier transform (DFT) matrix and generating a set of sequences based on the DFT matrix. Each sequence of the set of sequences may be generated by selecting a column of the DFT matrix and performing deterministic sampling of respective entries from the selected column in accordance with a sampling function. The UE may then select a sequence from the set of sequences based on generating the set of sequence. The UE may transmit the selected sequence to a wireless device (e.g., a base station).
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: October 25, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Wei Yang, Suhas Subramanya Kowshik, Joseph Binamira Soriaga, Jing Lei, Seyong Park, Naga Bhushan
  • Patent number: 11469721
    Abstract: An uplink multiple input-multiple output (MIMO) transmitter apparatus includes a transmitter chain that includes a sigma-delta circuit that creates a summed (sigma) signal and a difference (delta) signal from two original signals to be transmitted. These new sigma and delta signals are amplified by power amplifiers to a desired output level before having two signals reconstructed from the amplified sigma and amplified delta signals by a second circuit. These reconstructed signals match the two original signals in content but are at a desired amplified level relative to the two original signals. The reconstructed signals are then transmitted through respective antennas as uplink signals. By employing this uplink MIMO transmitter apparatus, it is possible to use smaller power amplifiers, which may reduce footprint, power consumption, and costs of the uplink MIMO transmitter apparatus.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: October 11, 2022
    Assignee: Qorvo US, Inc.
    Inventors: Nadim Khlat, Terry J. Stockert
  • Patent number: 11445487
    Abstract: A base station device can transmit data via multiple data channels to a single user equipment device. Each of the multiple data channels can be configured and scheduled via respective downlink control channels to the user equipment device. In an embodiment, the downlink control information and data can be processed in the transmitter via separate coding structures, and then the separate channel data can be combined for transmission to the mobile equipment. The data channels can use overlapping resource elements, and the receiver can use interference cancellation to remove interference from the subsequent data channel after decoding the data from the first data channel. In other embodiments, the data channels can be associated with different beamforming matrices, demodulation reference signal ports, constellation points and resource elements.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: September 13, 2022
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: SaiRamesh Nammi, Arunabha Ghosh
  • Patent number: 11438043
    Abstract: All data symbols used in data transmission of a modulated signal are precoded by hopping between precoding matrices so that the precoding matrix used to precode each data symbol and the precoding matrices used to precode data symbols that are adjacent to the data symbol in the frequency domain and the time domain all differ. A modulated signal with such data symbols arranged therein is transmitted.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: September 6, 2022
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 11431450
    Abstract: Methods, systems, and devices for wireless communication are described. A base station may determine a mapping configuration for antenna ports that includes mapping antenna ports with high spatial correlation to frequency resource and mapping antenna ports with low spatial correlation to time resources. The base station may apply a common coding mechanism to channel state information reference signals (CSI-RSs) having a timing domain and transmit the CSI-RSs using antenna ports with high frequency separation. A user equipment (UE) may receive the CSI-RS on the channel and identify a joint correlation metric based on a frequency correlation and a spatial correlation between CSI-RS and the channel. The UE may determine a channel estimate for the channel based on the joint correlation metric.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: August 30, 2022
    Assignee: QUALCOMM Incorporated
    Inventor: Xiaohui Liu
  • Patent number: 11418936
    Abstract: An approach for the reliable detection of smartphones within vehicles. The cloud instructs two smartphones, which both detect an in-vehicle detection system, to report signals that reflect major sensor events, together with the timing using their respective clocks. By sending local clock timing and time-sensitive beacon content information to the cloud, the offset between the two smartphone clocks may be determined, thereby enhancing the reliability of the in-vehicle detection of the smartphones.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: August 16, 2022
    Assignee: Forkbeard Technologies AS
    Inventors: Wilfred Edwin Booij, Magnus Oplenskedal
  • Patent number: 11412451
    Abstract: A method comprising receiving, at a first infrastructure equipment of a wireless network, a command from a second infrastructure equipment comprising an indication that a downlink message for a communications device to decode should be transmitted by the first infrastructure equipment and that a wake-up signal should be transmitted by the first infrastructure equipment to the communications device in advance of transmitting the downlink message, and transmitting the wake-up signal to the communications device in advance of transmitting the downlink message to provide the communications device with an indication that the downlink message for the communications device to decode will be transmitted. The wake-up signal comprises a preamble formed by a plurality of Orthogonal Frequency Division Multiplexed, OFDM, symbols, each of the OFDM symbols being modulated with a reference sequence.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: August 9, 2022
    Assignee: SONY CORPORATION
    Inventors: Samuel Asangbeng Atungsiri, Shin Horng Wong, Martin Warwick Beale, Vivek Sharma
  • Patent number: 11398877
    Abstract: This application relates to the field of communications technologies, and provides a channel state information measurement method and apparatus, so that a receiver can measure CSI without joining a network of a WiFi transmitter. The method includes: sending, by a CSI request apparatus, a first CREQ frame, a group of session parameters used to transmit a CS frame; receiving, by the CSI request apparatus, a CRSP frame sent by a first CSI response apparatus; receiving, by the CSI request apparatus, the CS frame by using the first session parameter; and measuring, by the CSI request apparatus, the CS frame to obtain CSI. The method is applied to a scenario of positioning or a scenario in which CSI measurement needs to be customized.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: July 26, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Zhihao Xing
  • Patent number: 11394441
    Abstract: Example implementations are directed to methods and systems employing a solicited sounding protocol that includes an efficient communication sequence for operating a wireless transceiver transmitting a sounding trigger to one or more beamformees via a forward channel, receiving at least one dedicated training signal from the one or more beamformees via a reverse channel in response to the sounding trigger, and for each of the received dedicated training signal. The method also includes estimating forward CSI derived based on the dedicated training signal from an associated beamformee; and where subsequent packets are precoded with precoding derived from the forward CSI for transmission to the associated beamformee via the forward channel. Example aspects including scheduling multiple dedicated training signals from one or more beamformees based on a single sounding trigger.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: July 19, 2022
    Assignee: ON Semiconductor Connectivity Solutions, Inc.
    Inventors: Sigurd Schelstraete, Hossein Dehghan, Debashis Dash
  • Patent number: 11374730
    Abstract: According to certain embodiments, a method (500) by a wireless device (110) includes receiving information relating to a Narrowband Secondary Synchronization Signal (NSSS) transmit diversity scheme. The information indicates a number of NSSS occasions that use different NSSS transmit diversity configurations. Based on the NSSS transmit diversity scheme, at least one measurement is performed across NSSS occasions.
    Type: Grant
    Filed: November 23, 2018
    Date of Patent: June 28, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Olof Liberg, Joakim Axmon, Mats Folke, Andreas Höglund, Yutao Sui, Martin Van Der Zee, Yi-Pin Eric Wang
  • Patent number: 11271676
    Abstract: The disclosure relates to a mobile communication system including: a first transmission path configured to transmit a message according to a first radio access technology; a second transmission path configured to transmit the message according to a second radio access technology; and an encoder configured to encode the message by a code before transmission of the message over the first transmission path and the second transmission path, wherein the code comprises at least two subcodes, and wherein the encoder is configured to encode the message intended for transmission over the first transmission path with a first subcode of the at least two subcodes and to encode the message intended for transmission over the second transmission path with a second subcode of the at least two subcodes.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: March 8, 2022
    Assignee: Intel Corporation
    Inventors: Markus Dominik Mueck, Christian Drewes, Mark Sagi
  • Patent number: 11265078
    Abstract: Systems and methods for supporting more flexible coverage areas and spatial capacity assignments using satellite communications systems are disclosed. A hub-spoke, bent-pipe satellite communications system includes: terminals; gateways; a controller for specifying data for controlling satellite operations in accordance with a frame definition including timeslots for a frame and defining an allocation of capacity between forward and return traffic. The satellite communications system may employ a satellite with a feed array assembly and may use on-board beamforming or ground-based beamforming. Beam hopping within timeslots of the frame may be used to provide coverage to different cells in different time periods. The flexible coverage areas may be provided using changes in satellite position, antenna patterns, or beam resource allocations.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: March 1, 2022
    Assignee: VIASAT, Inc.
    Inventors: Mark J. Miller, Charles N. Pateros, Aaron J. Mendelsohn, Donald L. Runyon
  • Patent number: 11265119
    Abstract: A system includes a stream parser, a multiplexer, and a plurality of transmission paths. The stream parser is configured to parse an input data stream for a packet into a plurality of spatial streams for transmission via a plurality of transmission paths over a plurality of wireless channels, respectively. The multiplexer is configured to multiplex data from the stream parser onto the plurality of transmission paths for each of the plurality of spatial streams. The plurality of transmission paths is configured to generate portions of the packet based on outputs of the multiplexer and to transmit the portions of the packet via the plurality of transmission paths over the plurality of wireless channels, respectively, using different carrier frequencies corresponding to different frequency bands for each of the portions of the packet.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: March 1, 2022
    Assignee: MARVELL ASIA PTE, LTD.
    Inventors: Hongyuan Zhang, Hui-Ling Lou, Rohit U. Nabar
  • Patent number: 11239888
    Abstract: A transmission method includes generating a first precoded signal and a second precoded signal by performing a precoding process on a first baseband signal and a second baseband signal, outputting a third signal by inserting a pilot signal into the first precoded signal, outputting a fourth signal by applying a first phase change to the second precoded signal, outputting a fifth signal by inserting a pilot signal into the fourth signal, and outputting a sixth signal by applying a second phase change to the fifth signal.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: February 1, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 11206063
    Abstract: [Object] To enable a cell appropriate for a terminal device to be selected when beamforming is performed. [Solution] Provided is a device including: an acquisition unit configured to acquire multiple weight sets for beamforming; and a control unit configured to map a reference signal for measurement to radio resources associated with a weight set in advance for each weight set included in the multiple weight sets, and multiply the reference signal by the weight set.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: December 21, 2021
    Assignee: SONY CORPORATION
    Inventor: Hiroaki Takano
  • Patent number: 11201705
    Abstract: A data modulation method includes dividing, by a terminal device, to-be-sent data into N bit groups, wherein N?2 and N is an integer. The method also includes generating, by the terminal device, N complex symbol groups. An ith complex symbol group is obtained by processing an ith bit group based on a mapping rule corresponding to the ith bit group. The mapping rule corresponding to the ith bit group is determined based on at least a group identity of the ith bit group and a first parameter. The first parameter includes at least one of a pilot parameter, a hopping identity, a terminal device identity, a layer index of a non-orthogonal layer, or a hopping offset. The N bit groups correspond to at least two different mapping rules, 0?i?N?1, and i is an integer. The method further includes sending, by the terminal device, the N complex symbol groups.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: December 14, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Lei Wang, Lei Zhang, Yiqun Wu, Yan Chen
  • Patent number: 11184129
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a sounding reference signal (SRS) resource set to be used to signal a virtual port used for a physical uplink shared channel (PUSCH) communication, wherein the virtual port is a combination of at least two non-coherent or partially-coherent antenna ports of the UE using precoding and cyclic delay diversity; and transmit an SRS for the at least two non-coherent or partially-coherent antenna ports using one or more resources of the SRS resource set. Numerous other aspects are provided.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: November 23, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Gokul Sridharan, Yi Huang, Xiao Feng Wang, Wei Yang, Jay Kumar Sundararajan, Peter Gaal
  • Patent number: 11183773
    Abstract: A configurable wireless communications module may include a first antenna layer having one or more antenna operating at a first wireless radio band; a second antenna layer having one or more antenna operating at a second wireless radio band; and a support structure for supporting the first antenna layer and the second antenna layer in a stacked configuration. The first antenna layer and/or the second antenna layer may be divided into sectors, with a directional antenna assigned to each sector, and with each directional antenna operating on a designated channel. Antenna layers may be individually accessed and removed/inserted for ease of maintenance and enhancement of function. An optional accessory module may support additional sensors and elements beyond antennas to allow for enhanced customization based on the intended application.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: November 23, 2021
    Assignee: HOOK'D WIFI INC.
    Inventors: Jeremy B. Fried, Jimmy Wynoka Sheffield, Jr., Amber E. Wayne, Frank Carlo Pallone
  • Patent number: 11178695
    Abstract: To adaptively determine a Tx beam subset for random access in a wireless communication system, a method for operating a Mobile Station (MS) includes determining at least one beam subset which satisfies a predefined condition, among a plurality of beam subsets, and transmitting random access preambles using Tx beams of the at least one beam subset. An MS in a wireless communication system includes a controller configured to determine at least one beam subset that satisfies a condition, among a plurality of beam subsets, and a transmitter configured to transmit random access preambles using Transmit (Tx) beams of the at least one beam subset, wherein the plurality of the beam subsets each comprise a plurality of beams radiating to different directions from one another. Other embodiments including a base station and a mobile station are also disclosed.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: November 16, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Cheol Jeong, Jeong-Ho Park, Su-Ryong Jeong
  • Patent number: 11158944
    Abstract: A circuit is described herein. In accordance with one embodiment the circuit includes two or more RF channels, wherein each channel includes an input node, a phase shifter and an output node. Each channel is configured to receive an RF oscillator signal at the input node and to provide an RF output signal at the output node. The circuit further includes an RF combiner circuit that is coupled with the outputs of the RF channels and configured to generate a combined signal representing a combination of the RF output signals, and a monitor circuit that includes a mixer and is configured to receive and down-convert the combined signal using an RF reference signal. Thus a mixer output signal is generated that depends on the phases of the RF output signals.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: October 26, 2021
    Inventors: Jochen O. Schrattenecker, Niels Christoffers, Vincenzo Fiore, Bernhard Gstoettenbauer, Helmut Kollmann, Alexander Melzer, Alexander Onic, Rainer Stuhlberger, Mathias Zinnoecker
  • Patent number: 11128367
    Abstract: A communication device may comprise a plurality of distributed transceivers and one or more corresponding antenna arrays. A processor may configure a first distributed transceiver to receive signals comprising one or more first data streams via one or more first communication links. The processor may configure a second distributed transceiver to receive signals comprising one or more second data streams via one or more second communication links. The processor may determine a channel response matrix associated with communication of the one or more first data streams via the one or more first communication links and/or the one or more second data streams via the one or more second communication links. The processor may optimize one or both of link capacity and/or link reliability of the one or more first communication links and/or the one or more second communication links based on the determined channel response matrix.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: September 21, 2021
    Assignee: GOLBA LLC
    Inventor: Mehran Moshfeghi
  • Patent number: 11108442
    Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may determine that a channel is reciprocal and perform an implicit sounding process. During the implicit sounding process, the wireless device may estimate the uplink channel by measuring a first uplink multi-user multiple input multiple output (MU-MIMO) transmission. The wireless devices may then update the uplink channel estimation based by measuring a second MU-MIMO transmission that is received after a downlink transmission from the wireless device. Based on the updated uplink channel estimation, the wireless device may send a beamformed MU-MIMO transmission to a number of other wireless devices.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: August 31, 2021
    Assignee: QUALCOMM INCORPORATED
    Inventors: Bin Tian, Lin Yang, Sameer Vermani, Lochan Verma
  • Patent number: 11108431
    Abstract: A wireless communication apparatus includes a channel estimation circuit, a beamforming control circuit, and a transmit (TX) circuit. The channel estimation circuit estimates a channel between the wireless communication apparatus and another wireless communication apparatus during at least one first time slot. The beamforming control circuit determines beamforming coefficients according to the estimated channel. The TX circuit applies the beamforming coefficients to transmission of an output data during at least one second time slot later than the at least one first time slot. During the at least one second time slot, the output data is transmitted to another wireless communication apparatus via multiple antennae. The wireless communication apparatus performs communications according to a normal frequency hopping sequence in compliance with a communication specification.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: August 31, 2021
    Assignee: MediaTek Inc.
    Inventors: Yu-Hsien Chang, Ching-Chia Cheng, Shuo-Jen Hsu, Ying-Che Hung, Li-Chun Ko
  • Patent number: 11108272
    Abstract: An electronic apparatus including a power transfer module configured to wirelessly transfer power to a power receiver and a controller configured to control the power receiver to transfer power based on voltage applied from the power transfer module to the power receiver.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: August 31, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Moonyoung Kim, Jeongil Kang, Shinwook Choi
  • Patent number: 11095357
    Abstract: A communication device may comprise a plurality of distributed transceivers and one or more corresponding antenna arrays. A processor may configure a first distributed transceiver to receive signals comprising one or more first data streams via one or more first communication links. The processor may configure a second distributed transceiver to receive signals comprising one or more second data streams via one or more second communication links. The processor may determine a channel response matrix associated with communication of the one or more first data streams via the one or more first communication links and/or the one or more second data streams via the one or more second communication links. The processor may optimize one or both of link capacity and/or link reliability of the one or more first communication links and/or the one or more second communication links based on the determined channel response matrix.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: August 17, 2021
    Assignee: GOLBA LLC
    Inventor: Mehran Moshfeghi
  • Patent number: 11096065
    Abstract: Embodiments of the invention describe a novel solution to enhance network service to devices with limited or no connectivity. Embodiments include network-aware nodes deployed by an end-user or operator which are configured by a network to achieve enhanced coverage, enhanced throughput, enhanced battery life, and mitigation of cell boundary experiences, etc. Embodiments provide these benefits to a specified or non-specified set of user equipment (e.g., neighboring user equipment). The service expansion terminal can be an available user equipment that is idle and that has been volunteered, assigned, or is a dedicated node with limited user interface and designed for carrying out enhanced coverage, enhanced throughput, enhanced battery life, and the mitigation of cell boundary experiences, etc. Embodiments may therefore provide low-cost, flexible deployment, and mobility thereby enabling boundaryless service.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: August 17, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Keyvan Zarifi, Mohammadhadi Baligh, Jianglei Ma, Peiying Zhu, Amine Maaref
  • Patent number: 11076350
    Abstract: Accordingly, systems and methods for managing power when the number of training and data tones are increased in a wireless communications system are provided. An L-SIG field is generated that includes a set of data and pilot tones, wherein the pilot tones are inserted between the data tones in the set of data and pilot tones. A plurality of training tones is added to the L-SIG field before and after the set of data and pilot tones. A symbol is generated that includes the L-SIG field, an L-LTF field, and a data field, wherein the training tones of the L-SIG field provide channel estimates for the data field. Power of the L-LTF field is managed relative to power of the L-SIG field in the generated symbol in a time domain.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: July 27, 2021
    Assignee: NXP USA, INC.
    Inventors: Hongyuan Zhang, Mingguang Xu, Yakun Sun
  • Patent number: 11063797
    Abstract: A transmitter is arranged to transmit binary information using a binary amplitude shift keying where information symbols are represented by a signal including a first power state and a second power state. A duration of a bit includes a first part where the second power state is applied irrespective of which binary value being represented, and a second part where a binary value is represented by any of the first power and a third power state or a combination pattern of the first power state and the third power state. The first power state has a higher signal power than the second power state and the third power state. The duration of the second part is equal or less the duration of the first part and the signal power of the first power state is such that the binary values are distinguishably decodable.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: July 13, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Leif Wilhelmsson, Miguel Lopez, Dennis Sundman
  • Patent number: 11063805
    Abstract: A signal generation method includes phase-changing baseband signals with respective phase changing patterns to generate respective phase-changed signals, each of the phase changing patterns being different from each other, and inverse-fast-Fourier-transforming the phase-changed signals to respective orthogonal frequency division multiplexing (OFDM) transmission signals. Each phase changing pattern has N candidates for an amount of change in a phase, N being an integer greater than two, and each candidate is periodically selected from the N candidates based on subcarriers of the respective OFDM transmission signals, a phase of the respective baseband signals being changed by the each candidate.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: July 13, 2021
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 11057255
    Abstract: The present specification relates to a method for transmitting and receiving signals in a wireless local area network (WLAN) system and an apparatus therefor, the method comprising the steps of: generating a training sub-field consisting of a certain number of orthogonal frequency division multiplexing (OFDM) symbols; and transmitting, to a second STA, a signal including a header field and the training sub-field, wherein the transmitted signal is repeatedly transmitted T times (where T is a natural number) on the basis of information indicated by the header field after a data field.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: July 6, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Sunwoong Yun, Jinmin Kim, Sungjin Park, Jinsoo Choi
  • Patent number: 11044045
    Abstract: Disclosed herein are techniques to provide forward error correction for a high-speed interconnect symbol stream, such as, DisplayPort. The symbol stream may be split into FEC blocks and parity bits generated for each of the FEC blocks. The parity bits may be interleaved, encoded, and transmitted over an interconnect along with the symbol stream to provide forward error correction for the symbol stream.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: June 22, 2021
    Assignee: INTEL CORPORATION
    Inventors: Nausheen Ansari, Ziv Kabiry, Gal Yedidia
  • Patent number: 10985948
    Abstract: Noise and interference may be estimated at a user equipment (UE) in a system that may support transmissions having different transmission time intervals (TTIs). The UE may perform a channel estimation for a first set of transmissions having a first TTI based at least in part on an estimated interference from a second set of transmissions having a second TTI that is shorter than the first TTI. The UE may perform channel estimation for orthogonal frequency division multiplexing (OFDM) symbols of the first set of transmissions. The first set of transmissions may then be demodulated based at least in part on the channel estimation for the first set of transmissions. Noise and interference may also be estimated based on one or more null tones within one or more OFDM symbols of the allocated resources.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: April 20, 2021
    Assignee: QUALCOMM INCORPORATED
    Inventors: Seyedkianoush Hosseini, Wanshi Chen, Juan Montojo, Shimman Arvind Patel, Hao Xu
  • Patent number: 10985815
    Abstract: All data symbols used in data transmission of a modulated signal are precoded by hopping between precoding matrices so that the precoding matrix used to precode each data symbol and the precoding matrices used to precode data symbols that are adjacent to the data symbol in the frequency domain and the time domain all differ. A modulated signal with such data symbols arranged therein is transmitted.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: April 20, 2021
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10972243
    Abstract: Provided is a radio communication device which can separate propagation paths of antenna ports and improve a channel estimation accuracy even when using virtual antennas. The device includes: a mapping unit which maps a data signal after modulation to a virtual antenna and a virtual antenna; a phase inversion unit which inverts the phase of S0 transmitted from an antenna port in synchronization with a phase inversion unit between the odd-number slot and the even-number slot; the phase inversion unit which inverts the phase of R0 transmitted from the antenna port; a phase inversion unit which inverts the phase of S1 transmitted from an antenna port in synchronization with a phase inversion unit; and the phase inversion unit which inverts the phase of R1 transmitted from an antenna port.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: April 6, 2021
    Assignee: Sun Patent Trust
    Inventors: Seigo Nakao, Masayuki Hoshino, Atsushi Sumasu, Katsuhiko Hiramatsu
  • Patent number: 10972163
    Abstract: A transmission method includes generating a first precoded signal and a second precoded signal by performing a precoding process on a first baseband signal and a second baseband signal, outputting a third signal by inserting a pilot signal into the first precoded signal, outputting a fourth signal by applying a first phase change to the second precoded signal, outputting a fifth signal by inserting a pilot signal into the fourth signal, and outputting a sixth signal by applying a second phase change to the fifth signal.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: April 6, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10958304
    Abstract: Methods, systems, and devices for wireless communications are described. A UE may use different modulation schemes, or different modulators, for a single data stream. The set of modulators may be based on a linear combination of a function of encoded bits to be transmitted. In some cases, the UE may use a different permutation or interleaving of the function of bits with the same linear function to generate a different set of modulators. The UE may use a combination of any one or more of the described techniques for generating a set of modulators. Different modulators may be cyclically repeated over time. The UE may apply a device-specific scrambling sequence and transmit the modulated symbols on an uplink channel. The base station may use matched filters and an element-wise estimator (ESE) to compute log-likelihood ratios (LLRs) for each bit of each UE in a received signal.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: March 23, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Seyong Park, Pinar Sen, Naga Bhushan, Tingfang Ji
  • Patent number: 10938529
    Abstract: Aspects directed towards sounding reference signal (SRS) antenna switching are disclosed. In one example, an SRS configuration is received from a network in which at least four antennas of a scheduled entity are configured based on the SRS configuration. Here, the SRS configuration configures at least one antenna to simultaneously support SRS antenna switching and an uplink (UL) multiple-input multiple-output (MIMO) communication. An SRS communication is then transmitted according to the SRS configuration. In another example, a transmission capability reporting is received from a scheduled entity comprising at least four antennas. A determination is then made of whether the scheduled entity may simultaneously support SRS antenna switching and an UL MIMO communication. An SRS configuration is then generated for the scheduled entity based on the determination in which a default SRS configuration configures at least one antenna to simultaneously support the SRS antenna switching and the UL MIMO communication.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: March 2, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Le Liu, Alberto Rico Alvarino, Peter Gaal, Alexandros Manolakos, Wanshi Chen
  • Patent number: 10931482
    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 relates to a method and apparatus for channel estimation in a wireless communication system. A method for operating a transmitter comprises the operations of: transmitting a first reference signal through a first antenna; and transmitting a second reference signal through a second antenna, wherein the first reference signal includes a first Golay sequence, and the second reference signal includes a second Golay sequence.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: February 23, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jongho Oh, Soon Chan Kwon, Daehoon Kim, Taeyeong Kim, Jungmin Yoon
  • Patent number: 10914775
    Abstract: A measuring system for measuring properties of a device under test over the air comprises an antenna array, adapted to receive first measuring signals from the device under test, a measuring device adapted to process the first measuring signals received by the antenna array, and to generate second measuring signals and transmit them to the device under test, using the antenna array. The measuring device comprises a quiet zone generator, which is adapted to perform a beamforming of the first measuring signals after reception by the antenna array. It is preferably also adapted to perform a beamforming on the second measuring signals before transmission by the antenna array. The quiet zone generator is adapted to apply the beamforming, so that at least one adjustable quiet zone is achieved.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: February 9, 2021
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Corbett Rowell, Adam Tankielun, Daniel Markert
  • Patent number: 10911975
    Abstract: The present invention discloses a method for a terminal reporting radio resource management (RRM) to a base station, and an apparatus supporting the same. More specifically, the present invention discloses a method for a terminal, if a base station transmits signals including an RRM reference signal (RS) by using one or more analogue beams for each symbol, performing RRM measurement in correspondence with the same, and reporting the measured RRM information; and an apparatus supporting the same.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: February 2, 2021
    Assignee: LG Electronics Inc.
    Inventors: Hanjun Park, Hyunsoo Ko, Eunsun Kim, Kijun Kim, Yunjung Yi, Hyunho Lee
  • Patent number: 10904039
    Abstract: Embodiments of the present disclosure relate to downlink/uplink data transmission in a wireless communication system. In an embodiment of the present disclosure, there is provided a method for downlink data transmission in a wireless communication system which comprises transmitting an indication for a new-type reference signal to a user equipment, wherein the new-type reference signal has an identical location in frequency domain to a legacy reference signal; and transmitting the new-type reference signal and the legacy reference signal to the user equipment for using in channel estimation. In a case of more than one antenna port, the new-type reference signal may be designed to have a different location in time domain from a legacy reference signal to avoid interference to other antenna ports.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: January 26, 2021
    Assignee: NEC (China) Co., Ltd.
    Inventors: Gang Wang, Zhennian Sun, Ming Lei
  • Patent number: 10892821
    Abstract: The present application discloses a method for a terminal to receive a downlink signal including at least one code word in a wireless communication system. Particularly, the method is characterized by: a step of receiving a first code word, through a first number of layers, and a second code word, through a second number of layers, which have been newly transmitted from a base station; a step of transmitting, to the base station, a negative acknowledgement for one of the first code word and the second code word; and receiving, from the base station, a code word which has been re-transmitted in response to the negative acknowledgement, and a third code word which has been newly transmitted, wherein the number of layers for receiving the re-transmitted code word is equal to the number of layers involved in the new transmission thereof.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: January 12, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyungtae Kim, Kijun Kim, Jiwon Kang
  • Patent number: 10862609
    Abstract: In some embodiments of the invention, OFDM symbols are transmitted as a plurality of clusters. A cluster includes a plurality of OFDM sub-carriers in frequency, over a plurality of OFDM symbol durations in time. Each cluster includes data as well as pilot information as a reference signal for channel estimation. In some embodiments, a plurality of clusters collectively occupy the available sub-carrier set in the frequency domain that is used for transmission. In some embodiments of the invention data and/or pilots are spread within each cluster using code division multiplexing (CDM). In some embodiments pilots and data are separated by distributing data on a particular number of the plurality of OFDM symbol durations and pilots on a remainder of the OFDM symbol durations. CDM spreading can be performed in time and/or frequency directions.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: December 8, 2020
    Assignee: Apple Inc.
    Inventors: Jianglei Ma, Ming Jia, Wen Tong, Peiying Zhu, Hua Xu, Hang Zhang, Mo-Han Fong
  • Patent number: 10833801
    Abstract: There is provided a method of generating a space-time block code (STBC) for encoding a digital data sequence comprising a set of independent symbols to be transmitted through a transmission channel in a communication system, the space-time block code being represented by a set of linear dispersion matrices in a linear dispersion representation, each linear dispersion matrix comprising components having complex values, the method comprising, generating at least some of the linear dispersion matrices depending on component-wise conditions related to a set of selected pairs of the linear dispersion matrices, each pair comprising a first linear dispersion matrix and a second linear dispersion matrix, said component-wise conditions comprising a component-wise condition between the components of the first linear dispersion matrix and the components of the second linear dispersion matrix.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: November 10, 2020
    Assignee: INSTITUT MINES-TELECOM
    Inventors: Ghaya Rekaya-Ben Othman, Asma Mejri, Mohamed-Achraf Khsiba
  • Patent number: 10833770
    Abstract: Aspects of the present disclosure describe systems, methods and structures for optical fiber nonlinearity compensation using neural networks that advantageously employ machine learning (ML) algorithms for nonlinearity compensation (NLC) that advantageously provide a system-agnostic model independent of link parameters, and yet still achieve a similar or better performance at a lower complexity as compared with prior-art methods. Systems, methods, and structures according to aspects of the present disclosure include a data-driven model using the neural network (NN) to predict received signal nonlinearity without prior knowledge of the link parameters. Operationally, the NN is provided with intra-channel cross-phase modulation (IXPM) and intra-channel four-wave mixing (IFWM) triplets that advantageously provide a more direct pathway to underlying nonlinear interactions.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: November 10, 2020
    Assignee: NEC Corporation
    Inventors: Shaoliang Zhang, Fatih Yaman, Eduardo Rodriguez, Yoshihisa Inada, Kohei Nakamura, Takanori Inoue
  • Patent number: 10812131
    Abstract: In a physical broadcast channel sending/receiving method, after receiving two broadcast channel signals on two corresponding physical broadcast channels at two time-frequency resource locations, the terminal device determines that information other than an offset of a corresponding time-frequency resource location is the same in two pieces of broadcast information carried in the two broadcast channel signals, obtains a time offset difference between the foregoing two time-frequency resource locations, and generates a scrambling code sequence based on the time offset difference; and the terminal device separately descrambles the two broadcast channel signals based on the scrambling code sequence and a preset scrambling code sequence.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: October 20, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xu Zhang, Jianqin Liu, Bingyu Qu
  • Patent number: 10785085
    Abstract: Systems, methods, apparatuses, and computer program products for probabilistic amplitude shaping (PAS) are provided. One method may include selecting a distribution parameter for one constellation in a communications system depending on one or more flat fading channels, transforming a uniform distribution of the constellation into a shaped distribution using the selected distribution parameter to produce modulated data, and passing the modulated data through a fading channel.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: September 22, 2020
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Fanny Jardel, Jie Chen, Philippe Sehier
  • Patent number: RE48742
    Abstract: Embodiments are provide for communicating data or other non-control information messages within a downlink control channel directly, rather than in a data channel or broadcast channel. Thereby, radio resource utilization can be substantially improved in the cellular system, such as in the case of transmitting smaller data packets. In an embodiment, a transmitter arranges a set of time-frequency radio resources, associated with a downlink control channel, for transmitting information other than control information sent on the downlink control channel. The transmitter then sends, on the set of time-frequency radio resources, a data information message comprising the information other than the control information. The information other than the control information comprises one of user-specific data information and broadcast data information. A receiver then receives on the downlink control channel, control information and the data information message.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: September 14, 2021
    Assignee: Futurewei Technologies, Inc.
    Inventors: Fredrik Berggren, Anthony C. K. Soong