US 12,451,951 B2
Method and device for beam failure recovery
Li Guo, Allen, TX (US)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Dec. 29, 2022, as Appl. No. 18/148,107.
Application 18/148,107 is a continuation of application No. PCT/CN2021/108491, filed on Jul. 26, 2021.
Claims priority of provisional application 63/078,548, filed on Sep. 15, 2020.
Prior Publication US 2023/0138282 A1, May 4, 2023
Int. Cl. H04L 5/00 (2006.01); H04B 7/06 (2006.01); H04W 24/04 (2009.01)
CPC H04B 7/06964 (2023.05) [H04B 7/06968 (2023.05); H04L 5/0051 (2013.01); H04W 24/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for beam failure recovery, comprising:
when a terminal device in a common beam operation mode detects beam failure in a cell, sending, by the terminal device, a beam failure recovery request message to a network device, wherein the beam failure recovery request message comprises indication of a selected candidate beam; and
after the beam failure recovery request message is received by the network device and before the terminal device receives indication of a transmission configuration indicator (TCI) state for common beam operation from the network device, performing, by the terminal device, physical downlink control channel (PDCCH) reception and physical downlink shared channel (PDSCH) reception on the cell by using same antenna port quasi co-location (QCL) parameters as the ones associated with the selected candidate beam; wherein the TCI state in the common beam operation mode is indicated to provide QCL assumption for all PDCCH and PDSCH reception and spatial setting for the transmission of all the PUSCH, PUCCH and SRS.