US 12,355,576 B2
Method and apparatus for providing HARQ feedback in wireless communication system
Min Wu, Beijing (CN); Miao Zhou, Beijing (CN); and Feifei Sun, Beijing (CN)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Feb. 26, 2024, as Appl. No. 18/587,316.
Application 18/587,316 is a continuation of application No. 17/217,153, filed on Mar. 30, 2021, granted, now 12,028,171.
Application 17/217,153 is a continuation of application No. 16/861,950, filed on Apr. 29, 2020, granted, now 10,985,879, issued on Apr. 20, 2021.
Claims priority of application No. 201910365424.0 (CN), filed on Apr. 30, 2019.
Prior Publication US 2024/0195538 A1, Jun. 13, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 1/1829 (2023.01); H04W 72/20 (2023.01); H04W 72/56 (2023.01)
CPC H04L 1/1861 (2013.01) [H04W 72/20 (2023.01); H04W 72/56 (2023.01)] 14 Claims
OG exemplary drawing
 
1. A method performed by a first user equipment (UE) in a wireless communication system, the method comprising:
receiving first sidelink control information (SCI) via a physical sidelink control channel (PSCCH);
receiving second SCI via a physical sidelink shared channel (PSSCH);
in case that indication information in the second SCI indicates groupcast transmission using first hybrid automatic repeat request (HARQ) feedback mode, transmitting HARQ feedback information including only NACK via a physical sidelink feedback channel (PSFCH); and
in case that the indication information in the second SCI indicates groupcast transmission using second HARQ feedback mode, transmitting HARQ feedback information including ACK or NACK via the PSFCH.