US 12,395,904 B2
Method and apparatus for handling secondary cell group failure in wireless communication system
Hongsuk Kim, Seoul (KR); and Sunghoon Jung, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Appl. No. 17/924,817
Filed by LG Electronics Inc., Seoul (KR)
PCT Filed Jun. 3, 2021, PCT No. PCT/KR2021/006946
§ 371(c)(1), (2) Date Nov. 11, 2022,
PCT Pub. No. WO2021/251685, PCT Pub. Date Dec. 16, 2021.
Claims priority of application No. 10-2020-0070459 (KR), filed on Jun. 10, 2020.
Prior Publication US 2023/0217325 A1, Jul. 6, 2023
Int. Cl. H04W 36/00 (2009.01); H04W 36/36 (2009.01)
CPC H04W 36/0072 (2013.01) [H04W 36/00695 (2023.05); H04W 36/0079 (2018.08); H04W 36/362 (2023.05)] 15 Claims
OG exemplary drawing
 
1. A method performed by a wireless device in a wireless communication system, the method comprising:
receiving, from a source primary secondary cell (PSCell), a conditional mobility command including a mobility condition for a target PSCell;
initiating a secondary cell group (SCG) failure recovery procedure and transmitting SCG failure information related to the SCG failure recovery procedure to a primary cell (PCell), based on detecting an SCG failure related to the source PSCell;
based on that the mobility condition for the target PSCell is satisfied during the SCG failure recovery procedure:
transmitting, to the PCell, a new PSCell indication informing a mobility from the source PSCell to the target PSCell; and
performing a random access to the target PSCell for the mobility.