US 11,729,827 B2
Method and device for detecting uplink LBT failure in wireless communication system using unlicensed band
Jaehyuk Jang, Gyeonggi-do (KR); and Anil Agiwal, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Dec. 13, 2021, as Appl. No. 17/549,103.
Application 17/549,103 is a continuation of application No. 16/832,093, filed on Mar. 27, 2020, granted, now 11,284,433.
Claims priority of application No. 10-2019-0035577 (KR), filed on Mar. 28, 2019.
Prior Publication US 2022/0104256 A1, Mar. 31, 2022
Int. Cl. H04W 74/08 (2009.01); H04W 16/14 (2009.01); H04W 24/08 (2009.01); H04W 72/04 (2023.01); H04W 72/21 (2023.01); H04W 72/53 (2023.01)
CPC H04W 74/0808 (2013.01) [H04W 16/14 (2013.01); H04W 24/08 (2013.01); H04W 72/21 (2023.01); H04W 72/53 (2023.01); H04W 74/0833 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by a terminal in a wireless communication system, the method comprising:
receiving listen before talk (LBT)-related configuration information including first information on a timer for an LBT failure detection and second information on a maximum counter value for the LBT failure detection;
performing an LBT for a transmission;
identifying an LBT failure, in case that the transmission is not performed; and
starting the timer and incrementing a counter value,
wherein the counter value is set to 0, in case that the timer expires before the counter value reaches the maximum counter value.