Plural Diversity Patents (Class 375/299)
  • Patent number: 10659267
    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, 2018
    Date of Patent: May 19, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Sunwoong Yun, Jinmin Kim, Sungjin Park, Jinsoo Choi
  • Patent number: 10651904
    Abstract: A scaled precoded data signal can be received. The scaled precoded data signal can be based on a precoder-dependent scaling factor. The scaled precoded data signal can be scaled by using a precoder dependent scaling factor that is dependent on a precoder used to precode the data signal. The scaled precoded data signal can be demodulated.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: May 12, 2020
    Assignee: Motorola Mobility LLC
    Inventors: Colin Frank, Tyler A. Brown
  • Patent number: 10651994
    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: August 27, 2019
    Date of Patent: May 12, 2020
    Assignee: Sun Patent Trust
    Inventors: Seigo Nakao, Masayuki Hoshino, Atsushi Sumasu, Katsuhiko Hiramatsu
  • Patent number: 10644847
    Abstract: An apparatus includes a coding unit configured to divide a transport block into one or more code blocks and generate coded bit(s) by coding the one or more code blocks, and a transmitter configured to transmit the coded bit(s) by using a channel, wherein multiplex bit(s) are given based on at least coupling of the coded bit(s) generated by coding of the one or more code blocks, the coding unit maps the multiplex bit(s) to a matrix in a first-axis prioritized manner and reads the multiplex bit(s) from the matrix in the first-axis prioritized manner or in a second-axis prioritized manner, and whether the first axis or the second axis is prioritized in a case that the multiplex bit(s) are read from the matrix is given based on at least the number of OFDM symbols of the channel.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: May 5, 2020
    Assignees: Sharp Kabushiki Kaisha, FG Innovation Company Limited
    Inventors: Tomoki Yoshimura, Shoichi Suzuki, Tatsushi Aiba, Liqing Liu, Wataru Ouchi, Takashi Hayashi, Kimihiko Imamura
  • Patent number: 10644771
    Abstract: A system and method for increasing the capacity of a Multiple-Input Multiple-Output (MIMO) system at desired user's locations and reducing the capacity at locations, other than that of the desired user, while also providing secrecy. Knowing the channel coefficient between each transmitter and receiver antenna pair at the transmitter, the method of the present invention calculates the artificial signal that minimizes the Euclidean distance between the desired and received data symbols if the precoding/combining matrix pair from the set that has the minimum Euclidean distance to the singular value decomposition (SVD) of the channel matrix is used for transmission and reception. The artificial signal may be fed to the precoder, instead of the actual desired data symbols, or may be transmitted directly to reduce computational complexity, power consumption and processing delay if the hardware configuration allows.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: May 5, 2020
    Assignee: University of South Florida
    Inventors: Berker Pekoz, Mohammed Hafez, Selcuk Kose, Huseyin Arslan
  • Patent number: 10638495
    Abstract: A terminal apparatus, a base station apparatus, a communication method, an integrated circuit, and a radio communication system are provided that enable a base station apparatus and a terminal apparatus to determine parameters relating to an uplink reference signal and efficiently communicate with each other.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: April 28, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tatsushi Aiba, Shoichi Suzuki
  • Patent number: 10630322
    Abstract: An RF communication system includes a wideband receiver for receiving an RF signal; a wideband receive signal path for processing the received RF signal, a wideband transmit signal path for processing a transmit RF signal to be transmitted; a wideband transmitter for transmitting the transmit RF signal at a selected transmit frequency and a selected transmit polarization; and a processor for controlling a plurality of beam forming circuits for performing signal processing and waveform generation, wherein the processor maximizes an effective radiated power (ERP) of the communication system within a predetermined ERP limit by switching the wideband transmitter between at least one of multiple transmit frequencies and multiple transmit polarizations to form an aggregate, time-averaged signal as the transmit RF signal.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: April 21, 2020
    Assignee: RAYTHEON COMPANY
    Inventors: Harry B. Marr, Daniel Thompson
  • Patent number: 10616737
    Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a configuration message indicating a payload size configuration for machine type communication (MTC) physical uplink control channel (PUCCH) messages. The UE may generate an MTC PUCCH message based at least in part on the payload size configuration and a PUCCH format of MTC uplink control information for transmission by the UE. The UE may transmit the MTC PUCCH message over a plurality of RBs in a frequency domain.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: April 7, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Chih-Hao Liu, Srinivas Yerramalli, Tamer Kadous
  • Patent number: 10587329
    Abstract: Disclosed aspects relate to methods and apparatus for controlling a wireless device having at least one radio frequency (RF) system. The methods and apparatus are configured to select an antenna for transmission of signals from radio components of the at least one RF system from between a first default antenna normally coupled to the radio components of the at least one RF system for transmission of signals and one of a plurality of other antennas in the wireless device. Further, switching is configured to couple the radio components to one of the other plurality of antennas selected as the antenna for transmission cycles when the radio components are transmitting in an antenna switch diversity (ASDIV) period. Additionally, the methods and apparatus are configured to operate a switch to couple the radio components back to at least the first default antenna during receiving cycles during the ASDIV period.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: March 10, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: David Maldonado, Andrew Puayhoe See
  • Patent number: 10560223
    Abstract: A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: February 11, 2020
    Assignee: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Robert L. Olesen, Eldad M. Zeira, Peter J. Voltz, Yongwen E. Yang, Qingyuan Dai, Chang-Soo Koo, I-Tai Lu, KunJu Tsai
  • Patent number: 10536821
    Abstract: A communication device is used in a mobile communication system switching alternately two communication time zones of a control channel (CCH) time zone in which communication using a control channel (CCH) is performed and a service channel time zone in which communication using a service channel is performed. A CCH transmission processor section transmits data using the control channel. When a generated data by a data generator section is determined by an importance determiner section to be equivalent to a data having a high-importance level, the generated data is transmitted in the CCH time zone by the CCH transmission processor section. By contrast, when the generated data is determined to be equivalent to a data having a low-importance level, the generated data is transmitted in the SCH time zone by the CCH transmission processor section.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: January 14, 2020
    Assignee: DENSO CORPORATION
    Inventors: Takahisa Yamashiro, Seigou Kumabe
  • Patent number: 10530437
    Abstract: All data symbols used in data transmission of a modulated signal are precoded by switching 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 along the frequency axis and the time axis all differ. A modulated signal with such data symbols arranged therein is transmitted.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: January 7, 2020
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10516452
    Abstract: A system and method for increasing the capacity of a Multiple-Input Multiple-Output (MIMO) system at desired user's locations and reducing the capacity at locations, other than that of the desired user, while also providing secrecy. Knowing the channel coefficient between each transmitter and receiver antenna pair at the transmitter, the method of the present invention calculates the artificial signal that minimizes the Euclidean distance between the desired and received data symbols if the precoding/combining matrix pair from the set that has the minimum Euclidean distance to the singular value decomposition (SVD) of the channel matrix is used for transmission and reception. The artificial signal may be fed to the precoder, instead of the actual desired data symbols, or may be transmitted directly to reduce computational complexity, power consumption and processing delay if the hardware configuration allows.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: December 24, 2019
    Assignee: University of South Florida
    Inventors: Berker Pekoz, Mohammed Hafez, Selcuk Kose, Huseyin Arslan
  • Patent number: 10492208
    Abstract: A method (20) of scheduling communications devices (3a, 3b, 3c) in a communications system (1) is disclosed. The method (20) is performed in a network node (2) arranged to serve a number of communications devices (3a, 3b, 3c) by using an analog beamformer and comprises: identifying (21) two or more of the communications devices (3a, 3b, 3c) as candidates for co-scheduling, determining (22) complex antenna weights for one or more beams B1 based on transmission beam reports received from each of the two or more identified communications devices (3a, 3b, 3c), and co-scheduling (23) the two or more of the communications devices (3a, 3b, 3c) simultaneously using the one or more determined beams B1, wherein the number of determined beams is less than the number of communications devices (3a, 3b, 3c). A corresponding network node (2), computer program and computer program products are provided.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: November 26, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Sven Petersson, Fredrik Athley, Andreas Nilsson
  • Patent number: 10454539
    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: April 28, 2015
    Date of Patent: October 22, 2019
    Assignee: SONY CORPORATION
    Inventor: Hiroaki Takano
  • Patent number: 10454547
    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: December 28, 2017
    Date of Patent: October 22, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10439778
    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: December 19, 2018
    Date of Patent: October 8, 2019
    Assignee: Sun Patent Trust
    Inventors: Seigo Nakao, Masayuki Hoshino, Atsushi Sumasu, Katsuhiko Hiramatsu
  • Patent number: 10419137
    Abstract: In a digital communication system there is provided a method for OFDM channel estimation that jointly considers the effects of coarse timing error and multipath propagation. The method uses an iterative channel estimation technique, which considers the practical scenario of fractional timing error and non-sample space echo delays. The method does not require channel state information such as second-order statistic of the channel impulse responses or the noise power. Moreover, timing error can be conveniently obtained with the proposed technique. Simulation shows that, when comparing OFDM channel estimation techniques under DOCSIS 3.1 realistic channel conditions, the proposed algorithm significantly outperforms conventional methods.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: September 17, 2019
    Assignee: VECIMA NETWORKS INC.
    Inventors: Brian Michael Berscheid, Tung Trong Nguyen, Joseph Eric Salt, Ha Hoang Nguyen
  • Patent number: 10374676
    Abstract: In general, this disclosure describes techniques for beamforming using limited feedback that exploit the spatio-temporal channel correlation and avoid the limitations of codebook-based feedback and Markov chain modeling. In one example, a receiving device includes a plurality of receive antennas for receiving communication information, a memory for storing the communication information, and one or more processors for processing the communication information. The one or more processors are configured to receive, through a wireless communication channel, a pilot signal transmitted by a transmitting device, determine, based on the received pilot signal, channel state feedback comprising a quantized representation of the pilot signal as received at the receiving device, and send, through the wireless communication.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: August 6, 2019
    Assignee: Regents of the University of Minnesota
    Inventors: Nikolaos D. Sidiropoulos, Omar A. Mehanna
  • Patent number: 10341153
    Abstract: A peak power reduction device includes a unit for dividing digital information to be transmitted into a plurality of streams; a unit for selecting the modulation level of the streams and distribution of transmission power according to a transmission state; a unit for performing singular-value decomposition on the transmission path characteristic of a streams and precoding the resultant data by a right singular value matrix; a unit for performing complex mapping on the subcarrier of a stream according to the modulation level; a unit for converting a complex mapping signal into a time domain signal; a first unit for storing a conversion result as a time domain signal; a second unit for calculating a peak time signal exceeding a predetermined threshold value from a peak value, if any exists, that exceeds a prescribed threshold value for the amplitude of the time domain signal.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: July 2, 2019
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Tatsuhiro Nakada, Hiroki Kato, Kei Ito, Satoru Ejima
  • Patent number: 10313168
    Abstract: A method and apparatus for transmitting/receiving a downlink channel in a wireless communication system are provided. A downlink control channel and a downlink data channel corresponding to the downlink control channel are transmitted/received within a transmission time interval (TTI). A reference signal (RS) of an antenna port used for transmission of both the downlink control channel and the downlink data channel is transmitted/received on an OFDM symbol with the downlink control channel, and an RS of an antenna port used only for transmission of the downlink data channel is transmitted in the remaining OFDM symbol(s) of the TTI.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: June 4, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyangsun You, Kijun Kim, Yunjung Yi
  • Patent number: 10305552
    Abstract: Provided are a method and a device for transmitting a feedback frame in a wireless LAN system. Particularly, a first wireless station receives, from a second wireless station, a feedback request field including an LTF. The first wireless station configures feedback information on a wireless channel corresponding to a preset frequency band by using the feedback request field. The first wireless station transmits the feedback information to the second wireless station.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: May 28, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Eunsung Park, Jinyoung Chun, Jinsoo Choi, Dongguk Lim, Hangyu Cho
  • Patent number: 10299192
    Abstract: Channel multi-input multi-output (MIMI) systems can be configured with a variable number of codewords where the network an change the number of codewords based on channel conditions, user equipment capability, etc. Thus, the network can efficiently utilize feedback channel overhead while simultaneously improving the capacity of the system. Instead of configuring the UE with a fixed number of codewords for all the channel conditions, the network can change the number of codewords dynamically or semi-statically. The network can determine the number of codewords based on measurements and recommendations from the UE. Alternatively, the network can determine the number of codewords on its own.
    Type: Grant
    Filed: January 7, 2017
    Date of Patent: May 21, 2019
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: SaiRamesh Nammi, Xiaoyi Wang, Arunabha Ghosh
  • Patent number: 10298373
    Abstract: A radio base station, user equipment (UE), and method of control signaling in wireless communication systems. Control information is transferred from a base station to at least one UE, via a plurality of common pilot channels. A set of unique pilot sequences is predefined, and the base station assigns specific pilot sequences from the set of pilot sequences to specific common pilot channels, forming a pilot sequence assignment pattern representing specific control information. The UE, having knowledge of the relations between pilot sequence assignment patterns and control information, interprets the received pilot sequence assignment pattern as specific control information. The method is particularly well suited for broadcast type control information.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: May 21, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Yi-Pin Eric Wang, Jung-Fu Cheng, Stephen Grant, Karl J. Molnar, Leonid Krasny
  • Patent number: 10277293
    Abstract: A wireless device, such as an wireless access point, receives signals detected by a plurality of antennas of a wireless device to produce a plurality of antenna-specific receive signals potentially representing a wireless transmission received from each of one or a plurality of devices. A signal processing component of the wireless device, such as a modem, performs several operations on the antenna-specific receive signals, including building a first space-time equalizer to be applied to the plurality of antenna-specific receive signals to recover a transmission from a first device by both equalizing channel effects and canceling out effects associated with transmissions from devices other than the first device, and building a second space-time equalizer to be applied to the plurality of antenna-specific receive signals to recover a transmission from a second device by both equalizing channel effects and canceling out effects associated with transmissions from devices other than the second device.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: April 30, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Xiaoli Ma, Hongyi Fu, Brian D. Hart, Matthew A. Silverman
  • Patent number: 10270566
    Abstract: A wireless access point (AP) includes multiple transmit antennas and circuitry. The circuitry is configured to transmit multiple sounding frames to a receiver that includes one or more receive antennas, the sounding frames are transmitted via respective different partial subgroups of the transmit antennas, to receive from the receiver feedback information that specifies for each of the sounding frames a respective channel between the transmit antennas in the respective partial subgroup and the receive antennas, and, to determine a steering matrix based on the feedback information, and transmit to at least the receiver via at least some of the transmit antennas using the steering matrix.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: April 23, 2019
    Assignee: Celeno Communications (Israel) Ltd.
    Inventors: Nir Shapira, Gregory Lerner
  • Patent number: 10243641
    Abstract: A method of transmitting a frame by a device in a wireless communication network is provided. The device generates a first symbol having a first subcarrier spacing where a symbol duration of the first symbol, excluding a guard interval, has a first length. The device generates a second symbol having a second subcarrier spacing narrower than the first subcarrier spacing wherein a symbol duration of the second symbol, excluding a guard interval, has a second length that is twice the first length. The device transmits a frame including the first symbol and the second symbol.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: March 26, 2019
    Assignee: NEWRACOM, INC.
    Inventor: Heejung Yu
  • Patent number: 10224989
    Abstract: All data symbols used in data transmission of a modulated signal are precoded by switching 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 along the frequency axis and the time axis all differ. A modulated signal with such data symbols arranged therein is transmitted.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: March 5, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10211959
    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 16, 2018
    Date of Patent: February 19, 2019
    Assignee: Sun Patent Trust
    Inventors: Seigo Nakao, Masayuki Hoshino, Atsushi Sumasu, Katsuhiko Hiramatsu
  • Patent number: 10198313
    Abstract: A device that provides for redundancy of error correction encoded data includes at least one processor circuit. The at least one processor circuit is configured to perform error correction encoding on data items to generate corresponding codewords, where at least one of the data items may have a different length than at least one other of the data items and each of the codewords is the same length. The at least one processor circuit is further configured to generate a redundancy data item based at least in part on the codewords. The at least one processor circuit is further configured to write the codewords and the redundancy data item to separate blocks of at least one flash memory circuit.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: February 5, 2019
    Assignee: Western Digital Technologies, Inc.
    Inventors: Richard David Barndt, Majid Nemati Anaraki
  • Patent number: 10187127
    Abstract: Distributed communications systems (DCSs) supporting automated analysis of MIMO communications stream distribution to remote units in a distributed communication system (DCS) to support configuration of interleaved MIMO communications services are disclosed. In this regard, MIMO analysis circuits can be employed to determine the actual routing of MIMO communications signals and locations of the remote units to automatedly determine any MIMO cell bonding between the remote units to determine the configured interleaved MIMO configuration in effect in the DCS. The determined interleaved MIMO configuration of the DCS infrastructure is used to determine other possible interleaved MIMO configurations and their associated performance, along with the associated configurations and changes needed to realize such possible interleaved MIMO configurations.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: January 22, 2019
    Assignee: Corning Research & Development Corporation
    Inventor: Aravind Chamarti
  • Patent number: 10158405
    Abstract: Interference alignment for a multiple-input multiple-output communications network with partial connectivity is provided. A method is provided that includes determining assignments for data streams transmitted in the multiple-input multiple-output communications network. The method also includes suppressing inter-cell interference and suppressing intra-cell interference. Also provided is inter-cell/intra-cell decomposition and exploitation of partial connectivity in a multiple-input multiple-output communications network. The multiple-input multiple-output communications network can comprise three or more cells.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: December 18, 2018
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Liangzhong Ruan, Vincent Kin Nang Lau, Xiongbin Rao
  • Patent number: 10158454
    Abstract: The described technology is generally directed towards adaptive interleaving in network communications systems based on one or more conditions with respect to user equipment. When conditions such as the speed of the user equipment indicate that performance can be increased by interleaving the data traffic, data is transmitted to the user equipment using an adaptive interleaver in the coding chain of MIMO systems. The adaptive interleaver is not used when conditions indicate performance is unlikely to improve. Adaptive interleaving may be performed in the frequency domain, in the frequency and time domain, or the frequency time and space domain. Multiple interleavers with different interleaving patterns may be used in the frequency domain and in the frequency and time domain. Adaptive interleaving may be based on one or more various criteria corresponding to the condition data received from the user equipment.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: December 18, 2018
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: SaiRamesh Nammi, Arunabha Ghosh
  • Patent number: 10153791
    Abstract: A method, in a telecommunications system, for transmitting radio signals from a base station comprising at least a pair of transmission branches configured to supply output signals for respective antennae of the base station, to at least one terminal comprising at least one antenna, the method comprising splitting a signal for transmission into at least first and second components, applying a phase shift to the first component to generate a modified first component and providing the modified first component and the second component to respective power amplifiers for transmission over the antennae.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: December 11, 2018
    Assignee: Alcatel Lucent
    Inventors: Nidham Ben Rached, Patrick Krief
  • Patent number: 10145935
    Abstract: A wireless telecommunications system that employs a distributed-antenna system is described in which different combinations of radio signals are assigned to antennas so as to facilitate locating a wireless terminal based on the identity of the radio signals it receives above a threshold signal strength.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: December 4, 2018
    Assignee: Polaris Wireless, Inc.
    Inventor: Vittorio Degli-Esposti
  • Patent number: 10142007
    Abstract: A device a radio communication device may be provided. The radio communication device may include: an antenna configured to operate in a plurality of operation modes; a receiver configured to receive a first channel signal and a second channel signal using the antenna; and a mode switching circuit configured to switch an operation mode of the antenna if the first channel signal fulfils a first channel specific criterion or configured to switch an operation mode of the antenna if the second channel signal fulfils a second channel specific criterion.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: November 27, 2018
    Assignee: Intel Deutschland GmbH
    Inventors: Thorsten Clevorn, Christian Drewes, Pablo Herrero, Juergen Kreuchauf
  • Patent number: 10135582
    Abstract: Systems and methods are provided for introducing time diversity in a transmitter. The systems and methods may include receiving, at the transmitter, a request from a receiver to retransmit data. The systems and methods may further include receiving an input of data corresponding to the data requested for retransmission at a first transmitter block. The systems and methods may further include operating on the signals using the first transmitter block in at least one of a first mode and a second mode, such that an output of signals from the first transmitter block is dependent on a time-varying function and corresponds to the data requested by the receiver for retransmission.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: November 20, 2018
    Assignee: Marvell International Ltd.
    Inventors: Yakun Sun, Hongyuan Zhang, Liwen Chu, Hui-Ling Lou
  • Patent number: 10129066
    Abstract: An Alamouti coding method includes mapping real number data symbols to a first subcarrier to an (N/2?1)th subcarrier, based on indices of the subcarriers, mapping the mapped real number data symbols and real number data symbols constituting an Alamouti coded symbol pair to an (N/2+1)th subcarrier to an (N?1)th subcarrier, in a frequency inversion scheme with reference to an (N/2)th subcarrier, adjusting a phase of each real number data symbol mapped to the first subcarrier to the (N/2?1)th subcarrier, by using a first phase adjustment value, based on indices of the mapped subcarriers and an index of a time interval, and adjusting a phase of each real number data symbol mapped to the (N/2+1)th subcarrier to the (N?1)th subcarrier, by using a conjugate value of a first phase adjustment value for a corresponding real number data symbol and the real data symbols constituting the Alamouti coded symbol pair.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: November 13, 2018
    Assignee: RESEARCH COOPERATION FOUNDATION OF YEUNGNAM UNIVERSITY
    Inventor: Kwonhue Choi
  • Patent number: 10110293
    Abstract: Systems and methods for full-duplex communication in a communications network, including generating a combined channel matrix including two or more channel matrices and determining a null space and a basis for the combined channel matrix. Common, individual, and disjoint vector spaces are determined, and common vector space is determined for each of one or more receiving nodes and each or one or more transmitting nodes, disjoint vector spaces for each of the one or more nodes are determined based on the common vector space for each of the one or more nodes, and individual vector spaces are determined based on the common and the disjoint vector spaces. Signals are mapped at each of the nodes to determine corresponding vector spaces; and interference alignment is performed in common vector spaces and zero forcing in disjoint vector spaces using a hardware processor.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: October 23, 2018
    Assignee: NEC Corporation
    Inventors: Mohammad Khojastepour, Karthikeyan Sundaresan
  • Patent number: 10110297
    Abstract: A flying machine or other vehicle includes at least two antenna units and a central control unit. In a first mode of operation, the two antenna units send and/or receive signals independent of each other in different, non-overlapping frequency bands. The central control unit is adapted to control the two antenna units in a second mode of operation such that the two antennas transmit and/or receive a common signal in a common frequency band using a Multiple Input Multiple Output transmission technique.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: October 23, 2018
    Assignee: AIRBUS DEFENCE AND SPACE GMBH
    Inventors: Dominik Rieth, Volker Ziegler, Christoph Heller
  • Patent number: 10097248
    Abstract: Disclosed are a data transmission method and apparatus. The method includes encoding a data stream of a first receive end by using a first encoding mode, to obtain a first encoded data stream. The method also includes encoding a data stream of a second receive end by using a second encoding mode, to obtain a second encoded data stream. The method also includes encoding the first encoded data stream and the second encoded data stream by using a third encoding mode, to obtain a to-be-sent data stream. The method also includes sending the to-be-sent data stream to a corresponding receive end by using antennas.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: October 9, 2018
    Assignee: Huawei Technologies Co., Ltd
    Inventor: Ye Wu
  • Patent number: 10079628
    Abstract: A physical layer (PHY) preamble of a multi-user (MU) PHY data unit is generated. The PHY preamble is generated to include formatting information regarding the MU PHY data unit, including a field to be transmitted within a first individual communication channel among a plurality of individual communication channels that collectively span a bandwidth of a composite channel, each individual communication channel including a plurality of basic resource allocation (RA) units that collectively span a bandwidth of the individual communication channel. The field is generated to indicate one or more groupings of basic RA units, wherein at least one of the one or more groupings of basic RA which includes basic RA units of one or more other individual communication channels. A data portion of the MU PHY data unit is generated according to the formatting information in the PHY preamble, and the MU PHY data unit is generated to include the PHY preamble and the data portion.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: September 18, 2018
    Assignee: Marvell World Trade Ltd.
    Inventors: Yakun Sun, Hongyuan Zhang, Liwen Chu, Lei Wang, Jinjing Jiang
  • Patent number: 10069547
    Abstract: Embodiments of the present application provide a beamforming based communications method and apparatus. The method includes: obtaining, by a transmit end, a transmit-end precoding matrix TrBB, a transmit-end intermediate-frequency beamforming matrix TrIF, and a transmit-end radio-frequency-end beamforming matrix TrRF according to feedback information that is from a receive end; acquiring a first data stream, and performing precoding processing on the first data stream according to TrBB, to generate a first analog signal; performing weighting and power amplification processing on the first analog signal according to TrIF, to generate a second analog signal; performing weighting and power amplification processing on the second analog signal according to TrRF, to generate a third analog signal; and determining an antenna array matching the third analog signal, and transmitting the third analog signal to the receive end by using the antenna array matching the third analog signal.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: September 4, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Guangjian Wang, Miaomiao Zhang, Jingjing Cheng
  • Patent number: 10063351
    Abstract: A method is provided for communication in a wireless telecommunication system. The method comprises designating, by a network element, a first set of time-frequency resources for transmitting a first set of downlink control channels for a plurality of UEs, wherein the first set of time-frequency resources is known to the plurality of UEs, and wherein the first set of time-frequency resources varies from a first time interval to a second time interval. The method further comprises mapping, by the network element, a first downlink control channel to the first set of time-frequency resources. The method further comprises transmitting, by the network element, the first downlink control channel together with a downlink data channel in a frequency-division multiplexing manner.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: August 28, 2018
    Assignee: BlackBerry Limited
    Inventors: Yufei Wu Blankenship, Shiwei Gao, Hua Xu
  • Patent number: 10038578
    Abstract: A multi-modulation transmitter configured to transmit a multicarrier signal to multiple different receivers. At least one of the receivers is a receiver using a modulation scheme other than Orthogonal Frequency-Division Multiplexing (OFDM). The multi-modulation transmitter includes a data mapping unit configured to map data targeting the different receivers to mutually orthogonal subcarrier signals, in accordance with the respective modulation schemes of the different receivers. An Inverse Fast Fourier Transform unit is configured to transform the mutually orthogonal subcarrier signals to a multicarrier signal in the time domain. A cyclic prefix unit is configured to determine a Cyclic Prefix length of the multicarrier signal based on a symbol rate of the receiver using a modulation scheme other than OFDM, and to insert the determined Cyclic Prefix in the multicarrier signal. A radio unit is configured to transmit the multicarrier signal to the multiple different receivers.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: July 31, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Leif Wilhelmsson, Miguel Lopez
  • Patent number: 10033505
    Abstract: Techniques are described for wireless communication. A first method includes generating uplink control information at a wireless device, and transmitting the uplink control information over an interlace of a component carrier of an unlicensed radio frequency spectrum band. The interlace includes a plurality of non-contiguous concurrent resource blocks in the unlicensed radio frequency spectrum band, and at least two resource blocks in the interlace include different portions of the uplink control information. A second method includes generating uplink control information at a wireless device, and transmitting the uplink control information over an uplink control channel of an unlicensed radio frequency spectrum band. Resources of the uplink control channel are divided into a plurality of discrete dimensions and the uplink control information of the wireless device is transmitted over a number of the discrete dimensions allocated to the uplink control information of the wireless device.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: July 24, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Durga Prasad Malladi, Yongbin Wei, Wanshi Chen, Peter Gaal, Tao Luo
  • Patent number: 10027395
    Abstract: A method and device for reporting channel state information in a wireless communication system is disclosed. The method for reporting channel state information (CSI) by means of a terminal in a wireless communication system according to an embodiment of the present invention includes: measuring a first reference signal transmitted from a first subset of antenna ports from among a plurality of antenna ports in a base station; measuring a second reference signal transmitted from a second subset of antenna ports from among the plurality of antenna ports; and reporting the CSI to the base station based on at least one of the measurement of the first reference signal and the measurement of the second reference signal, wherein at least one of the plurality of antenna ports is included in both the first subset and the second subset.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: July 17, 2018
    Assignees: LG Electronics Inc., SOGANG UNIVERSITY RESEARCH FOUNDATION
    Inventors: Jonghyun Park, Yoonsoo Kim, Wonjin Sung, Jihoon Sung, Hosik Kang
  • Patent number: 10021677
    Abstract: Methods, systems, and devices are described for wireless communication employing two-stage control channel messaging. Systems, methods, and apparatuses for two stage two-stage physical downlink control channel (PDCCH) with a downlink control information (DCI) flag and DCI format size indicator are described. For instance, the present disclosure presents an example method of wireless communication at a wireless device, which may include receiving, at a first bandwidth and during a transmission time interval (TTI), a first control channel message. In addition, the example method may include determining, based on a flag in the first control channel message, whether a second control channel message is present in the TTI. Furthermore, the example method may include receiving, at a second bandwidth, the second control channel message where the flag indicates that the second control channel message is present for the TTI.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: July 10, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Siddhartha Mallik, Taesang Yoo, Arumugam Chendamarai Kannan, Yongbin Wei, Jelena Damnjanovic, Durga Prasad Malladi, Tao Luo
  • Patent number: 9998189
    Abstract: The present invention discloses an adaptive device and method for wireless network. The method comprises: detecting RSSI (Received Signal Strength Indicator) of a plurality of antenna pairs of a MIMO system; selecting a first antenna pair which has the highest RSSI; using the first antenna pair to perform data transmission; detecting a data rate of the first antenna pair; and determining whether to adjust other antenna pairs to perform the data transmission according to the data rate.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: June 12, 2018
    Assignee: ACCTON TECHNOLOGY CORPORATION
    Inventors: I-Ru Liu, Pei-Sam Ho
  • Patent number: RE47565
    Abstract: The present invention provides an advantageous transmitter apparatus and associated method, for generating a Single-Carrier Discrete Cosine Transform (SC-DCT) OFDM signal for transmission. These transmit-side innovations include circuit configuration and signal processing methods for mapping Ku “input subcarriers” to N “output subcarriers,” where the “output subcarriers” are some or all of the subcarriers defined for the SC-DCT OFDM signal. In one or more embodiments, Ku is less than N, and the mapping is based on advantageous DCT/IDCT precoding. The present invention additionally or alternatively includes advantageous frequency-selective mapping, and further provides a corresponding receiver apparatus and associated method, for receiving and de-mapping the SC-DCT OFDM signals contemplated herein.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: August 6, 2019
    Assignee: Guangdong Oppo Mobile Telecommunications Corp., LTD.
    Inventor: Stefano Sorrentino