US 12,414,117 B2
Uplink transmission beam selection in a secondary cell
Yang Tang, Santa Clara, CA (US); Qiming Li, Beijing (CN); Yushu Zhang, Beijing (CN); Manasa Raghavan, Sunnyvale, CA (US); Xiang Chen, Campbell, CA (US); Huaning Niu, San Jose, CA (US); Dawei Zhang, Saratoga, CA (US); Hong He, San Jose, CA (US); Haitong Sun, Cupertino, CA (US); and Jie Cui, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/441,250
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Aug. 4, 2021, PCT No. PCT/CN2021/110571
§ 371(c)(1), (2) Date Feb. 9, 2023,
PCT Pub. No. WO2023/010337, PCT Pub. Date Feb. 9, 2023.
Prior Publication US 2024/0032038 A1, Jan. 25, 2024
Int. Cl. H04W 72/21 (2023.01); H04B 7/024 (2017.01); H04B 7/0404 (2017.01); H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04W 16/28 (2009.01); H04W 52/02 (2009.01); H04W 74/0833 (2024.01); H04W 76/15 (2018.01); H04W 76/27 (2018.01)
CPC H04W 72/21 (2023.01) [H04B 7/06952 (2023.05); H04W 16/28 (2013.01); H04W 74/0833 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for wireless communications by a user equipment (UE), comprising:
communicating with a first base station in a primary cell (PCell);
receiving a command from a wireless network to activate a physical uplink control channel (PUCCH) transmission to a second base station in a secondary cell (SCell) of the wireless network;
determining whether an uplink spatial relation configuration is provided to the UE by the wireless network;
determining whether the UE supports beam correspondence;
selecting an uplink transmission beam from multiple uplink transmission beams of the UE for the PUCCH transmission to the second base station, based on the determination whether the uplink spatial relation configuration is provided to the UE, and whether the UE supports the beam correspondence; and
transmitting, using the selected uplink transmission beam, an uplink signal to the second base station, wherein the uplink signal enables the second base station to enter an activated state.