US 11,903,069 B2
Beam failure recovery in secondary cells
Avik Sengupta, San Jose, CA (US); Alexei Davydov, Nizhny Novgorod (RU); and Bishwarup Mondal, San Ramon, CA (US)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Aug. 14, 2020, as Appl. No. 16/994,259.
Claims priority of provisional application 62/890,524, filed on Aug. 22, 2019.
Claims priority of provisional application 62/888,372, filed on Aug. 16, 2019.
Prior Publication US 2020/0383167 A1, Dec. 3, 2020
Int. Cl. H04W 36/30 (2009.01); H04W 76/19 (2018.01); H04B 7/06 (2006.01); H04W 74/08 (2009.01); H04W 72/21 (2023.01); H04W 72/23 (2023.01)
CPC H04W 76/19 (2018.02) [H04B 7/0617 (2013.01); H04W 72/21 (2023.01); H04W 72/23 (2023.01); H04W 74/0833 (2013.01)] 15 Claims
OG exemplary drawing
 
1. One or more non-transitory computer-readable media (NTCRM) comprising instructions for beam failure recovery (BFR), wherein execution of the instructions by one or more processors is to cause a user equipment (UE) to:
in response to detection of a beam failure event in a secondary cell (SCell),
determine one or more beams of the SCell on which to camp, wherein the determination of the one or more beams includes:
determine a set of beam failure detection (BFD)-reference signals (RSs) to measure based on a received BFD configuration,
perform measurement of the set of BFD-RSs, and
determine the one or more beams to be beams associated with the measured BFD-RSs having a signal strength above a configured threshold; and
generate a Medium Access Control (MAC) Control Element (CE) to include an index of the SCell, indications of the determined beams, and indexes of each measured BFD-RS having a signal strength above a configured threshold, and
send the MAC CE to a Radio Access Network (RAN) node over an uplink (UL) channel in the SCell or a UL channel in a primary cell (PCell) associated with the SCell.