US 11,924,877 B2
Method and device for base station to report LBT failure information in next-generation mobile communication system operating in unlicensed frequency band
Sangbum Kim, Suwon-si (KR); and Soenghun Kim, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 17/250,910
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
PCT Filed Sep. 11, 2019, PCT No. PCT/KR2019/011849
§ 371(c)(1), (2) Date Mar. 25, 2021,
PCT Pub. No. WO2020/067667, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 10-2018-0114970 (KR), filed on Sep. 27, 2018; and application No. 10-2019-0027954 (KR), filed on Mar. 12, 2019.
Prior Publication US 2021/0345405 A1, Nov. 4, 2021
Int. Cl. H04W 74/08 (2009.01); H04W 24/10 (2009.01); H04W 76/19 (2018.01)
CPC H04W 74/0816 (2013.01) [H04W 24/10 (2013.01); H04W 76/19 (2018.02)] 12 Claims
OG exemplary drawing
 
1. A method performed by a terminal in a wireless communication system, the method comprising:
performing a listen-before-talk (LBT) for uplink transmission;
determining a radio link failure (RLF) based on an LBT failure being detected while performing the LBT;
setting a cause value of the determined RLF to the LBT failure; and
transmitting, to a base station, an RLF report including the cause value.