METHOD FOR DATA TRANSMISSION, BASE STATION AND TERMINAL

    公开(公告)号:US20200077427A1

    公开(公告)日:2020-03-05

    申请号:US16468867

    申请日:2017-10-17

    Abstract: A method for data transmission, a base station and a terminal are provided. The method for data transmission includes: configuring the number of bits occupied by downlink control information (DCI) used to indicate physical downlink shared channel (PDSCH) scheduling on each of all carriers corresponding to a to-be-scheduled terminal to be N, where N is a maximum number of bits occupied by the DCI that is used to indicate the PDSCH scheduling on a carrier configured with an aperiodic channel state information reference signal (CSI-RS); and constructing scheduling information for indicating the PDSCH scheduling based on the configured DCI, and transmitting the scheduling information to the to-be-scheduled terminal.

    METHODS FOR INDICATING AND DETERMINATION LARGE-SCALE CHANNEL PARAMETER, BASE STATION AND TERMINAL DEVICE

    公开(公告)号:US20200067735A1

    公开(公告)日:2020-02-27

    申请号:US16483102

    申请日:2018-02-05

    Abstract: The present disclosure provides an indication method, including: determining first transmission resources related to a transmission channel for a large-scale channel parameter or a group of large-scale channel parameters, and transmitting configuration information about the first transmission resources to a terminal device via first signaling, the first transmission resources being transmission resources for K downlink reference signals, K being a positive integer; and selecting second transmission resources from the first transmission resources in accordance with a transmission parameter used by the transmission channel, and transmitting indication information about the second transmission resources to the terminal device via second signaling, the second transmission resources being transmission resources for L downlink reference signals, L being a positive integer, and K being greater than or equal to L.

    METHOD AND DEVICE FOR CONSTRAINING CODEBOOK SUBSET

    公开(公告)号:US20180138954A1

    公开(公告)日:2018-05-17

    申请号:US15570263

    申请日:2016-03-31

    Abstract: The embodiments of the present disclosure provide a method and a device for constraining a codebook subset. The method includes steps of: determining codebook subset constraint parameters for all or parts of matrix sets for constructing a codebook respectively, each codebook subset constraint parameter indicating an available matrix in a corresponding matrix set; and transmitting the determined codebook subset constraint parameters to a UE. The number of the matrices in each matrix set for constructing the codebook is far less than the number of precoding matrices in the codebook.

    CHANNEL STATE INFORMATION FEEDBACK AND ACQUISITION
METHOD AND DEVICE

    公开(公告)号:US20180069613A1

    公开(公告)日:2018-03-08

    申请号:US15563464

    申请日:2016-02-03

    Abstract: Disclosed are a channel state information feedback and acquisition method and device. The application comprises: acquiring, by a terminal, a first-dimension downlink reference signal resource, S second-dimension downlink reference signal resources and a first corresponding relationship of the above configured by a network device; measuring, by the terminal and according to the first-dimension downlink reference signal resource, a first-dimension downlink reference signal, and selecting, by the terminal and according to the measured first-dimension PMI and the first corresponding relationship, a resource for measuring a second-dimension downlink reference signal, measuring, according to the resource, the second-dimension downlink reference signal, and feeding back channel state information, wherein the second-dimension reference signal is transmitted after forming a first-dimension beamforming weight. The present application enables acquisition of channel state information between a network device and a terminal, and adjustment of the first-dimension beamforming weight for forming the second-dimension reference signal according to the PMI fed back by the first-dimension.

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