US 12,004,213 B2
Method and apparatus for adjusting contention window in wireless communication system
Jinyoung Oh, Gyeonggi-do (KR); Jeongho Yeo, Gyeonggi-do (KR); Hyunseok Ryu, Gyeonggi-do (KR); Sungjin Park, Gyeonggi-do (KR); Jonghyun Bang, Gyeonggi-do (KR); and Cheolkyu Shin, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd, (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Feb. 24, 2020, as Appl. No. 16/799,309.
Claims priority of application No. 10-2019-0021429 (KR), filed on Feb. 22, 2019.
Prior Publication US 2020/0275482 A1, Aug. 27, 2020
Int. Cl. H04W 74/08 (2024.01); H04W 72/0453 (2023.01)
CPC H04W 74/08 (2013.01) [H04W 72/0453 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for multiple sub-bands access by a base station (BS) in a wireless communication system, the method comprising:
identifying at least one hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback corresponding to at least one physical downlink shared channel (PDSCH) in a reference duration for a downlink channel occupancy, wherein the at least one PDSCH in the reference duration includes a PDSCH that partially but not fully overlaps with a sub-band among multiple sub-bands;
determining a contention window for the sub-band among the multiple sub-bands, based on the at least one HARQ-ACK feedback including a HARQ-ACK feedback corresponding to the PDSCH that partially but not fully overlaps with the sub-band among the multiple sub-bands;
identifying a number within the contention window for the sub-band;
sensing the sub-band based on the number and a defer duration; and
performing a downlink transmission on the sub-band, in case that the sub-band is sensed to be idle,
wherein the reference duration includes a first slot corresponding to transmission of the at least one PDSCH within the downlink channel occupancy.