US 12,356,486 B2
Method and apparatus for performing beam failure recovery procedure in wireless communication system
Seungjune Yi, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Appl. No. 18/014,622
Filed by LG Electronics Inc., Seoul (KR)
PCT Filed Jul. 9, 2021, PCT No. PCT/KR2021/008759
§ 371(c)(1), (2) Date Jan. 5, 2023,
PCT Pub. No. WO2022/030780, PCT Pub. Date Feb. 10, 2022.
Claims priority of application No. 10-2020-0096965 (KR), filed on Aug. 3, 2020.
Prior Publication US 2023/0262816 A1, Aug. 17, 2023
Int. Cl. H04W 76/19 (2018.01); H04B 7/06 (2006.01); H04B 7/08 (2006.01); H04W 16/28 (2009.01); H04W 24/08 (2009.01); H04W 24/10 (2009.01); H04W 28/06 (2009.01); H04W 72/21 (2023.01); H04W 80/02 (2009.01)
CPC H04W 76/19 (2018.02) [H04B 7/088 (2013.01); H04W 80/02 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for transmitting a Beam Failure Recovery (BFR) Medium Access Control (MAC) Control Element (CE) by a user equipment (UE) in a wireless communication system, comprising:
configuring a plurality of cells with cell indexes and priorities of the cells;
detecting a beam failure on two or more cells among the plurality of cells;
generating the BFR MAC CE including beam failure recovery information for the two or more beam failure detected cells;
transmitting the BFR MAC CE to a network,
wherein the beam failure recovery information for the two or more beam failure detected cells is included in the BFR MAC CE in a descending order of priorities of the two or more beam failure detected cells; and
truncating the beam failure recovery information for the two or more beam failure detected cells from a lowest octet of the BFR MAC CE for fitting a size of the BFR MAC CE plus a MAC sub-header to an available Uplink (UL) resource when the size of the BFR MAC CE plus the MAC sub-header of the BFR MAC CE is larger than the available UL resource,
wherein the MAC sub-header includes information indicating that the BFR MAC CE has been truncated.