METHOD OF PERFORMING CHANNEL ACCESS PROCEDURE AND APPARATUS THEREFOR
Disclosed is a method of transmitting an uplink signal by a user equipment in a wireless communication system. Specifically, the method includes performing listen-before-talk (LBT) based on at least one LBT beam, and transmitting the uplink signal through a plurality of transmission beams based on success of the LBT. The at least one LBT beam covers the plurality of transmission beams, and the plurality of transmission beams is multiplexed.
1 . A method of transmitting an uplink signal by a user equipment (UE) in a wireless communication system, the method comprising:
performing listen-before-talk (LBT) based on at least one LBT beam; and
transmitting the uplink signal through a plurality of transmission beams based on success of the LBT,
wherein the at least one LBT beam covers the plurality of transmission beams, and the plurality of transmission beams is multiplexed.
2 . The method of claim 1 , wherein the plurality of transmission beams is multiplexed using spatial division multiplexing (SDM).
3 . The method of claim 1 , wherein the plurality of transmission beams is multiplexed using time division multiplexing (TDM).
4 . The method of claim 1 , wherein the at least one LBT beam is a single LBT beam covering all of the plurality of transmission beams.
5 . The method of claim 1 , wherein the at least one LBT beam includes a plurality of LBT beams, and each of the plurality of LBT beams covers each of the plurality of transmission beams.
6 . The method of claim 1 , wherein Category 2 (Cat-2) LBT is performed before beam switching is performed between the plurality of transmission beams.
7 . A user equipment (UE) for transmitting an uplink signal in a wireless communication system, the UE comprising:
at least one transceiver;
at least one processor; and
at least one memory operably connected to the at least one processor and configured to store instructions that, when executed, cause the at least one processor to perform operations comprising:
performing listen-before-talk (LBT) based on at least one LBT beam; and
transmitting, through the at least one transceiver, the uplink signal through a plurality of transmission beams based on success of the LBT, and
wherein the at least one LBT beam covers the plurality of transmission beams, and the plurality of transmission beams is multiplexed.
8 . The UE of claim 7 , wherein the plurality of transmission beams is multiplexed using spatial division multiplexing (SDM).
9 . The UE of claim 7 , wherein the plurality of transmission beams is multiplexed using time division multiplexing (TDM).
10 . The UE of claim 7 , wherein the at least one LBT beam is a single LBT beam covering all of the plurality of transmission beams.
11 . The UE of claim 7 , wherein the at least one LBT beam includes a plurality of LBT beams, and each of the plurality of LBT beams covers each of the plurality of transmission beams.
12 . The UE of claim 11 , wherein Category 2 (Cat-2) LBT is performed before beam switching is performed between the plurality of transmission beams.
13 - 14 . (canceled)
15 . A method of transmitting a downlink signal by a base station in a wireless communication system, the method comprising:
performing listen-before-talk (LBT) based on at least one LBT beam; and
transmitting the downlink signal through a plurality of transmission beams based on success of the LBT,
wherein the at least one LBT beam covers the plurality of transmission beams, and the plurality of transmission beams is multiplexed.
16 . (canceled)
17 . A non-transitory medium which is readable by a processor and storing instructions cause the processor to perform the method of claim 1 .