FEEDBACK METHOD OF HYBRID CSI IN MULTI-ANTENNA COMMUNICATION SYSTEM AND DEVICE THEREFOR

    公开(公告)号:US20200136683A1

    公开(公告)日:2020-04-30

    申请号:US16726134

    申请日:2019-12-23

    Abstract: Disclosed in the present invention is a method by which a terminal reports channel status information (CSI) to a base station in a wireless communication system. The method comprises the steps of: receiving, through an upper layer, information on one CSI process having a first enhanced multiple input multiple output (eMIMO) type and a second eMIMO type; receiving a first channel status information-reference signal (CSI-RS) corresponding to the first eMIMO type; periodically reporting, to the base station, first CSI measured on the basis of the first CSI-RS; receiving a second CSI-RS, which corresponds to the second eMIMO type, beamformed on the basis of the first CSI; and periodically reporting, to the base station, second CSI measured on the basis of the second CSI-RS, wherein a priority of the first CSI is set to be equal to a priority of a CSI-RS resource indicator (CRI).

    METHOD FOR PERIODICALLY TRANSMITTING UPLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR SAME

    公开(公告)号:US20200052748A1

    公开(公告)日:2020-02-13

    申请号:US16482579

    申请日:2018-01-31

    Abstract: Disclosed in the present application is a method for a terminal periodically reporting, to a base station, channel state information on the basis of a linear combination codebook in a wireless communication system. Particularly, the method comprises the steps of: receiving a reference signal from the base station; and reporting channel state information which has been outputted to the base station on the basis of the reference signal, wherein the channel state information includes a channel quality indicator and information relating to a precoding matrix index, and when a rank outputted on the basis of the reference signal is 2, the precoding matrix index is selected from a codebook which has been sub-sampled, wherein a precoding matrix constituting the sub-sampled codebook comprises a first column vector for a first layer and a second column vector for a second layer that crosses the first column vector, wherein the information relating to the precoding matrix index indicates three co-phase coefficients defining the first column vector as a 4-bit size, and wherein three co-phase coefficients defining the second column vector are identical to the three co-phase coefficients defining the first column vector.

    METHOD FOR REPORTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR

    公开(公告)号:US20190273544A1

    公开(公告)日:2019-09-05

    申请号:US16344281

    申请日:2018-06-15

    Abstract: The present disclosure provides a method for reporting channel state information (CSI) in a wireless communication system.Specifically, a method for reporting, by a user equipment (UE), channel state information (CSI) in a wireless communication system includes: receiving, from a base station, control information related to a configuration of a channel state information reference signal (CSI-RS) resource, wherein the control information includes CDM type information representing a type of code division multiplexing (CDM) applied to the CSI-RS resource; receiving, from the base station, an X-port CSI-RS on one or more component CSI-RS resource element (RE) patterns; and reporting, to the base station, the CSI based on the received X-port CSI-RS.Accordingly, the present disclosure can flexibly provide CSI-RS resource locations.

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