Communication devices and methods with beamforming training

    公开(公告)号:US11496203B2

    公开(公告)日:2022-11-08

    申请号:US16343416

    申请日:2017-10-27

    Abstract: A communication device, e.g. an access point, for RF-based communication with another communication device, e.g. a station, comprises antenna circuitry configured to transmit and receive RF signals and beamforming circuitry configured to perform beamforming. The beamforming circuitry controls the antenna circuitry to transmit data, in a beacon transmission phase prior to the beamforming training phase, using a set of third directive transmit beams in subsequent time slots and to listen, in the beamforming training phase, using a set of first directive receive beams in subsequent time slots that is different from the set of third directive transmit beams.

    Receiving device and transmission device for wireless communication

    公开(公告)号:US11070274B2

    公开(公告)日:2021-07-20

    申请号:US16633583

    申请日:2018-08-16

    Abstract: A receiving device for use in a wireless OFDM communication system comprises two or more receive antennas for receiving OFDM signals received over a channel from a transmission device having two or more transmit antennas and applying transmit beamforming, and circuitry configured to perform channel estimation to estimate the channel, generate transmit beamforming information based on the channel estimation, said transmit beamforming information comprising beamforming information per subcarrier or time domain tap, determine a reduced set of transmit beamforming information from said transmit beamforming information, wherein said reduced set comprises beamforming information for a reduced set of subcarriers in the frequency domain or for a reduced set of taps in the time domain, wherein the subcarriers of said reduced set or the taps of said reduced set are determined based on an error criterion, and feed back the reduced set of transmit beamforming information to the transmission device.

    Communication devices and methods for RF-based communication and position determination

    公开(公告)号:US10827496B2

    公开(公告)日:2020-11-03

    申请号:US16330102

    申请日:2017-08-17

    Abstract: Communication devices and corresponding methods for RF-based communication and position determination are disclosed. An initiator communication device (1) comprises an antenna unit (10) configured to transmit and receive RF signals, a beamforming unit (11) configured to perform beamforming and to control the antenna unit to transmit and/or receive RF signals using one or more selected beams, a control unit (12) configured to control the beamforming unit (11) in a training phase to perform beamforming for determining an initiator line of sight (LOS), beam to a responder communication device (2), and a processing unit (13) configured to determine the initiator LOS beam and/or initiator angular information of the initiator LOS beam and to determine the position of said communication device using the determined initiator LOS beam and/or initiator angular information in a measurement phase.

    Communication device and method using virtual sector forming

    公开(公告)号:US10693551B2

    公开(公告)日:2020-06-23

    申请号:US16489356

    申请日:2018-03-16

    Abstract: A communication device for RF-based communication with another communication device comprises antenna circuitry configured to transmit and receive RF signals, and beamforming circuitry configured to perform beamforming and to carry out a beam training procedure for finding a beam for use in transmitting and/or receiving RF signals and/or for channel estimation. The beamforming training procedure comprises at least two stages during which training signals are transmitted using different beams, wherein first beams used in a first stage have a larger beam sector than second beams used in a second stage and wherein the second beams are selected by forming a virtual best sector based on an evaluation of a predetermined metric obtained for the first beams in the first stage.

    COMMUNICATION DEVICES AND METHODS WITH BEAMFORMING TRAINING

    公开(公告)号:US20190319693A1

    公开(公告)日:2019-10-17

    申请号:US16343416

    申请日:2017-10-27

    Abstract: A communication device, e.g. an access point, for RF-based communication with another communication device, e.g. a station, comprises antenna circuitry configured to transmit and receive RF signals and beamforming circuitry configured to perform beamforming. The beamforming circuitry controls the antenna circuitry to transmit data, in a beacon transmission phase prior to the beamforming training phase, using a set of third directive transmit beams in subsequent time slots and to listen, in the beamforming training phase, using a set of first directive receive beams in subsequent time slots that is different from the set of third directive transmit beams.

    Communication device and method
    7.
    发明授权

    公开(公告)号:US11841451B2

    公开(公告)日:2023-12-12

    申请号:US17279583

    申请日:2019-11-15

    CPC classification number: G01S5/0273 G01S5/0215 H04L43/0864 H04W64/006

    Abstract: A communication device for RF based communication with another communication device, said communication device comprising circuitry configured to apply a fine timing measurement, FTM, procedure. The circuitry is configured to determine an FTM mode out of at least two different FTM modes, and to perform an FTM procedure to determine the round trip time, RTT, between the communication device and the other communication device, wherein the RTT is determined by evaluating a time information of a tap of the channel impulse response, wherein the tap used for the evaluation depends on the determined FTM mode.

    Communication device and method
    8.
    发明授权

    公开(公告)号:US11050479B2

    公开(公告)日:2021-06-29

    申请号:US16329766

    申请日:2017-08-11

    Abstract: A first communication device for communicating with a second communication device over a link that is utilized at the substantially same time and with the substantially same frequency resource by a pair of further communication devices. The first communication device comprises one or more antenna arrays with which beamforming can be performed, a controller configured to apply beamformers to control beamforming by the one or more antenna arrays, and circuitry configured to determine whether at least one of the beamformers satisfies an interference condition such that a level of interference leaked to the further communication devices by the first communication device is below a defined threshold, and if available, select the at least one beamformer for communicating with the second communication device.

    Multiple stream space-time block coding

    公开(公告)号:US10999013B2

    公开(公告)日:2021-05-04

    申请号:US16623778

    申请日:2018-07-09

    Abstract: Transmitter having multiple transmit antennas for transmitting two or more streams. The transmitter comprises an encoding circuitry configured to perform space-time block encoding to obtain for at least one of the two or more streams a pair of space-time encoded streams. Further, a mapping circuitry is configured to assign each stream of each pair of space-time encoded streams to a transmit antenna of the multiple transmit antennas for wirelessly transmitting the two or more streams. Finally, a control circuitry is configured to adjust one or more parameters of the mapping circuitry in order to achieve a defined channel characteristic between the transmitter and a receiver.

    COMMUNICATION DEVICES AND METHODS FOR RF-BASED COMMUNICATION AND POSITION DETERMINATION

    公开(公告)号:US20190200339A1

    公开(公告)日:2019-06-27

    申请号:US16330102

    申请日:2017-08-17

    Abstract: Communication devices and corresponding methods for RF-based communication and position determination are disclosed. An initiator communication device (1) comprises an antenna unit (10) configured to transmit and receive RF signals, a beamforming unit (11) configured to perform beamforming and to control the antenna unit to transmit and/or receive RF signals using one or more selected beams, a control unit (12) configured to control the beamforming unit (11) in a training phase to perform beamforming for determining an initiator line of sight (LOS), beam to a responder communication device (2), and a processing unit (13) configured to determine the initiator LOS beam and/or initiator angular information of the initiator LOS beam and to determine the position of said communication device using the determined initiator LOS beam and/or initiator angular information in a measurement phase.

Patent Agency Ranking