METHOD FOR MEASURING AND REPORTING CHANNEL STATE IN WIRELESS ACCESS SYSTEM SUPPORTING UNLICENSED BAND

    公开(公告)号:US20180227106A1

    公开(公告)日:2018-08-09

    申请号:US15506206

    申请日:2015-09-01

    Abstract: The present invention relates to a wireless access system supporting an unlicensed band and, more particularly, to a method for measuring a channel state and an apparatus for supporting the same. One of methods for reporting channel state information (CSI) in a wireless access system supporting an unlicensed band may comprise: receiving an upper layer signal including channel state information-reference signal (CSI-RS) configuration information and channel state information-reference measurement (CSI-IM) configuration information for one or more transmission points (TP) included in a transmission opportunity (TxOP) duration; receiving a physical layer signal including TxOP configuration information that indicates which TP is included in the TxOP duration; measuring the CSI by using a CSI-RS resource and a CSI-IM resource for the TP indicated by the TxOP configuration information, on the basis of the CSI-RS configuration information and the CSI-IM configuration information; and reporting the measured CSI.

    METHOD FOR PERFORMING RANGING RELATED OPERATION IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20180098299A1

    公开(公告)日:2018-04-05

    申请号:US15563530

    申请日:2016-04-01

    Inventor: Hyukjin CHAE

    Abstract: One embodiment of the present invention relates to a method by which a user equipment (UE) performs ranging in a wireless communication system, comprising the steps of: transmitting a D2D signal in a subframe N by a first UE; receiving the D2D signal in a subframe N+K from a second UE, which has set, as a subframe boundary, a time point at which the D2D signal is received; and measuring, by the first UE, a round trip time (RTT) by detecting a reception time point of the D2D signal transmitted by the second UE.

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