Method for transmitting sounding reference signal in wireless communication system supporting unlicensed band, and apparatus supporting same
AssigneeLG Electronics Inc.
InventorsSeonwook KIM, Joonkui AHN, Kijun KIM, Yunjung YI, Suckchel YANG
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Abstract
Disclosed are a method for transmitting, by a terminal, a sounding reference signal to a base station without a physical uplink shard channel in a licensed assisted access (LAA) system in which a base station or a terminal performs listen-before-talk (LBT)-based signal transmission, and an apparatus supporting the same.
Claims10
A method of transmitting a sounding reference signal (SRS) by a user equipment to a base station in a wireless communication system supporting an unlicensed band, the method comprising:
- performing channel access procedure (CAP) for transmitting the SRS via the unlicensed band;
- and
- transmitting the SRS via the unlicensed band based on the CAP,
- wherein the CAP for the SRS transmission without a physical uplink shared channel (PUSCH) is a random backoff-based CAP based on a predetermined channel access priority class having a smallest contention window size among a plurality of channel access priority classes.
A communication device for transmitting a sounding reference signal (SRS) to a base station in a wireless communication system supporting an unlicensed band, the communication device comprising:
- a memory;
- and
- a processor operably coupled with the memory and configured to:
- perform channel access procedure (CAP) for transmitting the SRS via the unlicensed band;
- and
- transmit the SRS via the unlicensed band based on the CAP, and
- wherein the CAP for the SRS transmission without a physical uplink shared channel (PUSCH) is a random backoff-based CAP based on a predetermined channel access priority class having a smallest contention window size among a plurality of channel access priority classes.
Dependencies are inferred from the claim text.