Method for reporting channel state in wireless communication system, and apparatus therefor

    公开(公告)号:US10588039B2

    公开(公告)日:2020-03-10

    申请号:US15533298

    申请日:2015-12-23

    Abstract: A method for reporting channel state for an unlicensed band in a wireless communication system, according to an embodiment of the present invention, is performed by a terminal, and may comprises the steps of: blind-detecting a reference signal in an unlicensed band cell (UCell) subframe according to the setting of a plurality of channel state reports; determining, according to the blind detection result, whether or not the UCell subframe is an available resource for the channel state reports; and if the UCell subframe is determined to be an available resource for the channel state reports, calculating a value for the channel state reports using the reference signal detected in the UCell subframe.

    METHOD AND DEVICE FOR PERFORMING LBT PROCESS ON MULTIPLE CARRIERS IN WIRELESS ACCESS SYSTEM SUPPORTING UNLICENSED BAND

    公开(公告)号:US20200045739A1

    公开(公告)日:2020-02-06

    申请号:US16598547

    申请日:2019-10-10

    Abstract: The present invention relates to a wireless access system supporting an unlicensed band. According to this disclosure, a method by which a terminal performs LBT in a wireless access system supporting an unlicensed band and multiple carriers can comprise the steps of: receiving, from a base station, each of uplink grants for scheduling uplink channels on two or more component carriers (CCs); randomly selecting a first CC on which a first LBT is to be performed from among the two or more CCs; performing the first LBT on the selected first CC: and performing a second LBT on the remaining CCs among the two or more CCs, wherein the first LBT can be a random back-off-based LBT for performing a random back-off by a random back-off counter value, and the second LBT can be a channel sensing-based LBT for sensing a channel during a predetermined time interval before uplink transmission.

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