US 12,089,099 B2
Method and device for handling LBT failure indicator when DAPS handover is configured in wireless communication system
Jaehyuk Jang, Suwon-si (KR); and Anil Agiwal, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jun. 16, 2023, as Appl. No. 18/336,456.
Application 18/336,456 is a continuation of application No. 17/236,309, filed on Apr. 21, 2021, granted, now 11,683,733, issued on Jun. 20, 2023.
Claims priority of application No. 10-2020-0048450 (KR), filed on Apr. 22, 2020; and application No. 10-2020-0055488 (KR), filed on May 8, 2020.
Prior Publication US 2023/0379773 A1, Nov. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 36/00 (2009.01); H04W 36/08 (2009.01); H04W 56/00 (2009.01); H04W 74/04 (2009.01)
CPC H04W 36/0079 (2018.08) [H04W 36/08 (2013.01); H04W 56/001 (2013.01); H04W 74/04 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method performed by a terminal in a communication system, the method comprising:
receiving, from a source base station, a first message including first information used for detection of consistent uplink listen before talk (LBT) failures for the source base station;
receiving, from the source base station, a second message for a handover to a target base station, the second message including second information for a reconfiguration with sync and third information configuring at least one dual active protocol stack (DAPS) bearer;
in case that a timer included in the second information is running, detecting the consistent uplink LBT failures for the source base station based on the first information;
based on the third information and the detection, suspending data communication of all data radio bearers (DRBs) associated with the source base station;
in case that the timer is not running, detecting the consistent uplink LBT failures for the target base station; and
performing a radio link failure procedure for the target base station.