US 12,342,404 B2
Beam failure recovery in multi-cell configuration
Kazuyoshi Uesaka, Kanagawa (JP); Muhammad Ali Kazmi, Sundbyberg (SE); Santhan Thangarasa, Vällingby (SE); and Claes Tidestav, Bålsta (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/911,504
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Apr. 12, 2021, PCT No. PCT/SE2021/050331
§ 371(c)(1), (2) Date Sep. 14, 2022,
PCT Pub. No. WO2021/206625, PCT Pub. Date Oct. 14, 2021.
Claims priority of provisional application 63/008,539, filed on Apr. 10, 2020.
Prior Publication US 2023/0354453 A1, Nov. 2, 2023
Int. Cl. H04W 76/19 (2018.01); H04W 72/1268 (2023.01)
CPC H04W 76/19 (2018.02) [H04W 72/1268 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method for a user equipment (UE) to communicate with a wireless network via a plurality of cells, the method comprising:
detecting failure of a first beam associated with a first cell of the plurality of cells;
determining availability or unavailability of other beams, than the first beam, that are associated with the first cell; and
transmitting, to one of the plurality of cells, a message indicating availability or unavailability of the other beams associated with the first cell, wherein:
the message is transmitted within a first duration after detecting the failure of the first beam, and
the first duration is based on a maximum time for determining availability of the other beams and on a periodicity of resources allocated for beam failure reporting in the cell in which the message is transmitted.