US 12,232,133 B2
Method and apparatus for channel access in communication system supporting unlicensed band
Hoi Yoon Jung, Daejeon (KR); Sung Ik Park, Daejeon (KR); Nam Ho Hur, Daejeon (KR); Heung Mook Kim, Daejeon (KR); and Dong Joon Choi, Daejeong (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed on Mar. 17, 2022, as Appl. No. 17/697,738.
Claims priority of application No. 10-2021-0035371 (KR), filed on Mar. 18, 2021; application No. 10-2021-0092449 (KR), filed on Jul. 14, 2021; and application No. 10-2022-0024174 (KR), filed on Feb. 24, 2022.
Prior Publication US 2022/0312468 A1, Sep. 29, 2022
Int. Cl. H04W 72/12 (2023.01); H04W 72/23 (2023.01); H04W 74/02 (2009.01)
CPC H04W 72/23 (2023.01) [H04W 74/02 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An operation method of a terminal in a communication system, the operation method comprising:
receiving, from a base station, a higher layer message including information used for indicating whether downlink control information (DCI) includes a channel access parameter used for identifying a communication node initiating a channel occupancy time;
receiving (the DCI) for scheduling uplink transmission from the base station;
identifying the communication node initiating the channel occupancy time associated with the uplink transmission based on the channel access parameter included in the DCI when the information included in the higher layer message indicates that the DCI includes the channel access parameter; and
performing the uplink transmission scheduled by the DCI within the channel occupancy time initiated by the communication node,
wherein the communication node is the terminal or the base station.