US 11,924,658 B2
Method and apparatus for radio link monitoring for multiple active bandwidth parts in a wireless communication system
Sangwon Kim, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Jul. 26, 2021, as Appl. No. 17/385,396.
Claims priority of application No. 10-2020-0095344 (KR), filed on Jul. 30, 2020.
Prior Publication US 2022/0038926 A1, Feb. 3, 2022
Int. Cl. H04W 72/04 (2023.01); H04W 24/08 (2009.01); H04W 72/0453 (2023.01); H04W 72/23 (2023.01); H04W 72/56 (2023.01)
CPC H04W 24/08 (2013.01) [H04W 72/0453 (2013.01); H04W 72/23 (2023.01); H04W 72/56 (2023.01)] 9 Claims
OG exemplary drawing
 
1. A method performed by a wireless device in a wireless communication system, the method comprising:
receiving a Bandwidth Part (BWP) configuration including information on (i) multiple BWPs, and (ii) a priority for the multiple BWPs;
activating a first BWP and a second BWP among the multiple BWPs;
performing Radio Link Monitoring (RLM) procedure only for the first BWP which has been determined as a primary active BWP;
initiating a first random access procedure for the first BWP;
determining to change the primary active BWP from the first BWP to the second BWP upon detecting a BWP failure for the first BWP, wherein the second BWP is selected based on the information on the priority for the multiple BWPs;
stopping the first random access procedure for the first BWP, upon detecting the BWP failure for the first BWP;
performing RLM procedure for the second BWP which is selected as the primary active BWP;
initiating a second random access procedure for the second BWP, after changing the primary active BWP from the first BWP to the second BWP; and
transmitting a BWP failure information informing the BWP failure for the first BWP via the second BWP, after completing the second random access procedure.