US 12,273,176 B2
Enhancements to support TRP specific beam failure recovery
Manasa Raghavan, Sunnyvale, CA (US); Jie Cui, San Jose, CA (US); Qiming Li, Beijing (CN); Yushu Zhang, Beijing (CN); Yang Tang, San Jose, CA (US); Haitong Sun, Cupertino, CA (US); Huaning Niu, San Jose, CA (US); Xiang Chen, Campbell, CA (US); and Dawei Zhang, Saratoga, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/906,225
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Sep. 24, 2021, PCT No. PCT/CN2021/120392
§ 371(c)(1), (2) Date Sep. 13, 2022,
PCT Pub. No. WO2023/044776, PCT Pub. Date Mar. 30, 2023.
Prior Publication US 2024/0204854 A1, Jun. 20, 2024
Int. Cl. H04B 7/06 (2006.01)
CPC H04B 7/06964 (2023.05) 18 Claims
OG exemplary drawing
 
1. A processor of a user equipment (UE) configured to perform operations comprising:
establishing a connection to a base station, wherein the base station configures the UE with a first beam corresponding to a first transmission reception point (TRP) and a second beam corresponding to a second TRP, wherein the first and second beam are in frequency range 2 (FR2) and wherein the UE does not support simultaneous reception of multiple beams in FR2;
detecting a beam failure during a beam failure detection (BFD) evaluation period;
identifying one or more candidate beams during a candidate beam detection (CBD) evaluation period, wherein the CBD evaluation period is based on Max(25,Ceil(MCBD×P×N×PCBD×PTRP)×TCBD-RS),
wherein MCBD represents a number of samples,
wherein P represents a sharing factor related to other types of configured measurements,
wherein N represents a scaling factor for receive (RX) beam refinement,
wherein PCBD represents a sharing factor for related to secondary cell (SCell) CBD,
wherein PTRP represents a CBD TRP sharing factor, and
wherein TCBD-RS represents a periodicity of a measurement resource; and
transmitting a beam failure recovery (BFR) request to the base station.