US 11,818,621 B2
Handling of listen before talk failures during radio resource control procedures
Ozcan Ozturk, San Diego, CA (US); Xiaoxia Zhang, San Diego, CA (US); and Arash Mirbagheri, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Apr. 8, 2021, as Appl. No. 17/226,009.
Claims priority of provisional application 63/007,754, filed on Apr. 9, 2020.
Prior Publication US 2021/0321314 A1, Oct. 14, 2021
Int. Cl. H04W 4/00 (2018.01); H04W 36/24 (2009.01); H04W 74/08 (2009.01); H04W 48/10 (2009.01); H04W 36/00 (2009.01); H04W 24/04 (2009.01)
CPC H04W 36/24 (2013.01) [H04W 24/04 (2013.01); H04W 36/0072 (2013.01); H04W 48/10 (2013.01); H04W 74/0816 (2013.01); H04W 74/0833 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A method of wireless communication, comprising:
initiating, by a user equipment (UE), an uplink communication procedure on a shared communication spectrum with a cell;
determining, by the UE, a listen before talk (LBT) failure state on a bandwidth part (BWP) associated with the cell, wherein the LBT failure state is determined based on consistent LBT failure detected on the BWP; and
executing, by the UE, a failure recovery procedure in response to the LBT failure state, wherein the failure recovery procedure includes completion of the uplink communication procedure, wherein the uplink communication procedure includes a connection resumption procedure.