US 12,238,545 B2
Method and apparatus for declaring radio link failure in multiple active bandwidth parts in a wireless communication system
Sangwon Kim, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Appl. No. 17/779,739
Filed by LG Electronics Inc., Seoul (KR)
PCT Filed Jan. 6, 2021, PCT No. PCT/KR2021/000121
§ 371(c)(1), (2) Date May 25, 2022,
PCT Pub. No. WO2021/141377, PCT Pub. Date Jul. 15, 2021.
Claims priority of application No. 10-2020-0001905 (KR), filed on Jan. 7, 2020.
Prior Publication US 2023/0013393 A1, Jan. 19, 2023
Int. Cl. H04W 24/04 (2009.01); H04W 24/08 (2009.01)
CPC H04W 24/04 (2013.01) [H04W 24/08 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method performed by a wireless device in a wireless communication system, the method comprising,
activating a first bandwidth part and a second bandwidth part for a serving cell;
performing a radio link monitoring for the first bandwidth part and the second bandwidth part;
detecting a radio link problem of the first bandwidth part;
deciding not to declare a radio link failure for the serving cell based on that the second bandwidth part is activated;
deactivating the first bandwidth part upon detecting the radio link problem on the first bandwidth part;
performing a transmission to inform the serving cell of the radio link problem of the first bandwidth part, wherein the transmission is performed via the second bandwidth part;
detecting a radio link problem of the second bandwidth part;
deactivating the second bandwidth part upon detecting the radio link problem of the second bandwidth part;
deciding to declare the radio link failure for the serving cell based on both the first bandwidth part and the second bandwidth part are deactivated;
declaring the radio link failure for the serving cell; and
initiating a recovery procedure upon declaring the radio link failure for the serving cell.