US 11,889,489 B2
Beam failure detection and recovery
Shanyu Zhou, San Diego, CA (US); Jelena Damnjanovic, Del Mar, CA (US); and Juan Montojo, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jul. 9, 2021, as Appl. No. 17/371,462.
Prior Publication US 2023/0009390 A1, Jan. 12, 2023
Int. Cl. H04L 12/26 (2006.01); H04W 72/044 (2023.01); H04W 24/08 (2009.01)
CPC H04W 72/046 (2013.01) [H04W 24/08 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A method of wireless communication by a user equipment, comprising:
detecting a beam failure associated with a reference signal from a network entity, wherein detecting the beam failure comprises detecting a first condition that reception of the reference signal is blocked for a first duration, and wherein the reference signal is a synchronization signal block (SSB) or a channel state information (CSI) reference signal (RS);
transmitting, to the network entity before initiating a beam failure recovery procedure, a request for a beam switch in response to the detected beam failure;
receiving, from the network entity, an indication to communicate via a beam in response to the request; and
communicating with the network entity via the beam based on the indication.