US 12,231,207 B2
Methods and apparatus for beam failure detection reference signal determination
Chia-Hao Yu, Taipei (TW); Wan-Chen Lin, Taipei (TW); and Chien-Chun Cheng, Taipei (TW)
Assigned to SHARP KABUSHIKI KAISHA, Osaka (JP)
Appl. No. 17/800,778
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Mar. 3, 2021, PCT No. PCT/CN2021/078817
§ 371(c)(1), (2) Date Aug. 18, 2022,
PCT Pub. No. WO2021/175237, PCT Pub. Date Sep. 10, 2021.
Claims priority of provisional application 62/984,740, filed on Mar. 3, 2020.
Prior Publication US 2023/0106244 A1, Apr. 6, 2023
Int. Cl. H04B 7/06 (2006.01); H04L 5/00 (2006.01)
CPC H04B 7/0695 (2013.01) [H04L 5/0035 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method performed by a User Equipment (UE) configured with more than one Transmission/Reception Point (TRP) in an active Bandwidth Part (BWP) for determining a Beam Failure Detection (BFD) Reference Signal (RS), the method comprising:
receiving at least one Medium Access Control (MAC) Control Element (CE) for Transmission Configuration Indicator (TCI) state activation, each of the at least one MAC CE indicating a Control Resource Set (CORESET) and at least one TCI state to be activated for monitoring a Physical Downlink Control Channel (PDCCH) associated with a physical resource, the physical resource being determined by a configuration of the CORESET indicated by a same MAC CE, one of the at least one MAC CE indicating more than one TCI state, at least a subset of all TCI states indicated by the at least one MAC CE belonging to a first group of TCI states associated with a first TRP; and
performing first operations after determining that a total number of TCI states included in the first group of TCI states is larger than a first threshold number, the first operations including:
selecting at least one first TCI state from the first group of TCI states, a total number of the at least one first TCI state being equal to the first threshold number; and
determining at least one first BFD RS for detecting a first beam failure condition of the first TRP based on the at least one first TCI state.