US 12,107,717 B2
Beam failure recovery method and device and communication system
Zhe Chen, Beijing (CN); Lei Song, Beijing (CN); Xianjun Yang, Beijing (CN); Lei Zhang, Beijing (CN); and Xin Wang, Beijing (CN)
Assigned to FUJITSU LIMITED, Kawasaki (JP)
Filed by FUJITSU LIMITED, Kawasaki (JP)
Filed on Sep. 22, 2021, as Appl. No. 17/481,386.
Application 17/481,386 is a continuation of application No. PCT/CN2019/080216, filed on Mar. 28, 2019.
Prior Publication US 2022/0006686 A1, Jan. 6, 2022
Int. Cl. H04L 41/0654 (2022.01); H04W 72/1273 (2023.01); H04W 72/23 (2023.01); H04W 74/00 (2009.01)
CPC H04L 41/0654 (2013.01) [H04W 72/1273 (2013.01); H04W 72/23 (2023.01); H04W 74/006 (2013.01); H04W 74/008 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A beam failure recovery device configured to operate a terminal equipment, the beam failure recovery device comprising:
a memory; and
processor circuitry coupled to the memory and configured to:
upon the terminal equipment receive a beam failure recovery (BFR) response, and after a period of time, monitor a downlink signal(s) in a first cell(s) of the terminal equipment according to an antenna quasi-co-located (QCL) parameter identical to a selected reference signal(s) (q_new) or a reference signal(s) (q_new) indicated by a higher layer,
wherein the period of time is a number of symbols associated with a subcarrier spacing, and
wherein the subcarrier spacing is according to:
a subcarrier spacing of one of the first cell(s) for the reception of the downlink signal(s).