METHOD AND APPARATUS FOR UPLINK SIGNAL TRANSMISSION BASED ON CODEBOOK IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210050890A1

    公开(公告)日:2021-02-18

    申请号:US16993971

    申请日:2020-08-14

    Abstract: A method in which a UE transmits an uplink signal, based on a codebook, in a wireless communication system includes: receiving downlink control information (DCI) for determining a precoding matrix, which is applied to transmission of the uplink signal, from a base station; determining a precoding matrix that is applied to transmission of the uplink signal from a codebook subset related to transmission of the uplink signal, based on the DCI; and transmitting the uplink signal to the base station, based on the determined precoding matrix, in which, based on that differences of phase values applied to antenna ports for transmitting the uplink signal are changed in all pairs of antenna ports, the codebook subset includes at least one specific precoding matrix for full power transmission.

    METHOD FOR PERFORMING COORDINATED TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR

    公开(公告)号:US20200383091A1

    公开(公告)日:2020-12-03

    申请号:US16622468

    申请日:2018-06-15

    Abstract: A method for performing coordinated transmission in a wireless communication system and an apparatus therefor are disclosed. Specifically, a method for receiving downlink control information (DCI) by a user equipment (UE) in a wireless communication system may comprise the steps of: receiving the DCI from one of a plurality of base stations performing coordinated transmission to the UE; and receiving downlink data scheduled on the basis of the DCI from the plurality of base stations performing the coordinated transmission, wherein a separate transmission layer for the downlink data is transmitted from each base station included in the plurality of base stations, and single piece of information in the DCI indicates a total number of layers scheduled to the UE and demodulation reference signal (DMRS) grouping information associated with the separate transmission layer transmitted from each base station.

    APERIODIC CSI REPORTING METHOD BASED ON APERIODIC CSI-RS IN WIRELESS COMMUNICATION SYSTEM, AND DEVICE THEREFOR

    公开(公告)号:US20200314677A1

    公开(公告)日:2020-10-01

    申请号:US16887780

    申请日:2020-05-29

    Abstract: Disclosed in the present application is a method by which a terminal reports aperiodic channel status information (CSI) to a base station in a wireless communication system. Particularly, the method comprises the steps of: receiving, from the base station, through downlink control information (DCI), a CSI report triggering message including information on at least one CSI process among a plurality of CSI processes and on one aperiodic reference signal among a plurality of aperiodic reference signal resources included in the at least one CSI process; and updating the aperiodic CSI relating to the at least one CSI process and reporting the same to the base station, on the basis of the one aperiodic reference signal.

    METHOD FOR REPORTING CHANNEL STATE BY USING APERIODIC CHANNEL STATE INFORMATION-REFERENCE SIGNAL, AND DEVICE THEREFOR

    公开(公告)号:US20200304192A1

    公开(公告)日:2020-09-24

    申请号:US16089884

    申请日:2017-03-23

    Abstract: The present invention relates to a method for receiving a downlink signal in a wireless communication system. The method, according to one embodiment of the present invention, is performed by a terminal and may comprise the steps of: receiving control information indicating an aperiodic channel state information-reference signal (CSI-RS) resource masked with an identifier associated with an aperiodic CSI-RS; if the control information does not indicate an aperiodic CSI-RS resource for each terminal in a cell, determining that the aperiodic CSI-RS resource indicated by the control information is a resource element (RE) puncturing pattern for a downlink data channel or an improved downlink control channel; and decoding the downlink data channel or the improved downlink control channel by using the RE puncturing pattern.

    METHOD FOR TRANSMITTING AND RECEIVING SRS AND COMMUNICATION DEVICE THEREFOR

    公开(公告)号:US20200280421A1

    公开(公告)日:2020-09-03

    申请号:US16650221

    申请日:2018-09-28

    Abstract: A method for transmitting an SRS by a terminal may comprise the steps of: receiving, from a base station, information on a first bandwidth part (BWP) and a second BWP set for SRS transmission of the terminal; and when a frequency starting position for SRS transmission in the second BWP having a lower priority than the first BWP overlaps the first BWP, transmitting the SRS to the base station at an SRS bandwidth position different from an SRS bandwidth position associated with the frequency starting position for the SRS transmission.

    METHOD FOR INDICATING QCL INFORMATION FOR APERIODIC CSI-RS IN WIRELESS COMMUNICATION SYSTEM AND DEVICE FOR PERFORMING THE METHOD

    公开(公告)号:US20200266948A1

    公开(公告)日:2020-08-20

    申请号:US16827602

    申请日:2020-03-23

    Abstract: Disclosed herein is a method for receiving a user equipment-specific reference signal-based data signal by a user equipment in a wireless communication system. Particularly, the method comprises the steps of: receiving a control signal for the user equipment-specific reference signal-based data signal from an eNodeB; and receiving the user equipment-specific reference signal-based data signal on the basis of the control signal, wherein the control signal includes information on an antenna port for a channel status information-reference signal, the antenna port being assumed to be quasi-co-located (QCL) with an antenna port for the user equipment-specific reference signal, and the channel status information-reference signal excludes an aperiodic channel status information-reference signal.

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