US 12,284,677 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)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Feb. 2, 2024, as Appl. No. 18/431,603.
Application 18/431,603 is a continuation of application No. 17/250,910, granted, now 11,924,877, previously published as PCT/KR2019/011849, filed on Sep. 11, 2019.
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 2024/0179742 A1, May 30, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/0816 (2024.01); H04W 24/10 (2009.01); H04W 76/10 (2018.01); H04W 76/19 (2018.01)
CPC H04W 74/0816 (2013.01) [H04W 24/10 (2013.01); H04W 76/19 (2018.02)] 20 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 an uplink transmission;
obtaining an LBT failure indication for a serving cell of a secondary cell group (SCG);
identifying whether a number of times the LBT failure indication is obtained is equal to or greater than a preconfigured number of times; and
transmitting, to a base station, a first message for reporting an SCG failure in case that the number of times the LBT failure indication is obtained is equal to or greater than the preconfigured number of times.