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Method and apparatus for performing LBT process on multicarrier in wireless access system supporting unlicensed band
Method and apparatus for performing LBT process on multicarrier in wireless access system supporting unlicensed band
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机译:在支持免执照频段的无线接入系统中对多载波进行LBT处理的方法和装置
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摘要
The present invention relates to a wireless access system supporting an unlicensed band, and to methods for performing uplink listen before talk (LBT) on multiple carriers, and a device supporting the same. According to one embodiment of the present invention, 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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