US 12,309,762 B2
Apparatus, system, method, and computer-readable medium for performing beam failure recovery
Patrick Svedman, Stockholm (SE); Qing Li, Princeton Junction, NJ (US); Mohamed Awadin, Plymouth Meeting, PA (US); Yifan Li, Conshohocken, PA (US); Allan Y. Tsai, Boonton, NJ (US); Guodong Zhang, Woodbury, NY (US); and Lakshmi R. Iyer, King of Prussia, PA (US)
Assigned to INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)
Appl. No. 17/621,351
Filed by InterDigital Patent Holdings, Inc., Wilmington, DE (US)
PCT Filed Jun. 25, 2020, PCT No. PCT/US2020/039579
§ 371(c)(1), (2) Date Dec. 21, 2021,
PCT Pub. No. WO2020/264134, PCT Pub. Date Dec. 30, 2020.
Claims priority of provisional application 62/868,588, filed on Jun. 28, 2019.
Prior Publication US 2022/0322325 A1, Oct. 6, 2022
Int. Cl. H04W 72/044 (2023.01); H04W 24/08 (2009.01); H04W 72/02 (2009.01)
CPC H04W 72/046 (2013.01) [H04W 24/08 (2013.01); H04W 72/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wireless transmit/receive unit (WTRU) comprising a processor configured to:
receive a beam failure recovery (BFR) configuration from a base station of a network, wherein the BFR configuration is associated with a first bandwidth part (BWP) of a monitored cell and comprises a configuration of at least one set of candidate beam reference signals (CBRSs);
detect a beam failure on the monitored cell;
determine at least one new set of CB-RSs from the at least one set of CB-RSs configured for the WTRU, wherein the at least one new set of CB-RSs configured for the WTRU is associated with a second BWP of the monitored cell;
switch from the first BWP of the monitored cell to a second BWP of the monitored cell using a BWP identity of the second BWP, wherein the BFR configuration that is associated with the first BWP indicates the BWP identity of the second BWP;
determine if one or more CB-RS in the at least one new set of CB-RSs of the second BWP meets a criterion, and in a case it is determined that the one or more CB-RS in the at least one new set of CB-RSs meets the criterion:
select one of the one or more CB-RS in the at least one new set of CB-RSs that meets the criterion as a new beam, and indicate the selected new beam to the network via the second BWP.