US 12,267,910 B2
Sidelink relay selection and re-selection in wireless communication
Zhibin Wu, Los Altos, CA (US); Chunxuan Ye, San Diego, CA (US); Dawei Zhang, Saratoga, CA (US); Haijing Hu, Beijing (CN); Haitong Sun, Irvine, CA (US); and Wei Zeng, San Diego, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Mar. 3, 2022, as Appl. No. 17/686,172.
Claims priority of provisional application 63/169,113, filed on Mar. 31, 2021.
Prior Publication US 2022/0322194 A1, Oct. 6, 2022
Int. Cl. H04W 8/00 (2009.01); H04W 36/30 (2009.01); H04W 52/38 (2009.01); H04W 88/04 (2009.01); H04W 92/18 (2009.01)
CPC H04W 8/005 (2013.01) [H04W 36/302 (2023.05); H04W 52/383 (2013.01); H04W 88/04 (2013.01); H04W 92/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A remote user equipment device (UE) comprising:
radio circuitry configured to enable wireless communications of the remote UE; and
a processor communicatively coupled to the radio circuitry and configured to cooperate with the radio circuitry to:
receive, via a sidelink discovery signal from a relay UE, a message comprising:
first information representative of a transmit power of the relay UE; and
second information representative of a first measured receive signal power of a sidelink solicitation signal received from the remote UE by the relay UE;
measure a second receive signal power of the sidelink discovery signal;
determine a sidelink pathloss for a direction of remote UE to relay UE transmission based on at least one of the first information or the second information and a transmit power of the sidelink solicitation signal; and
determine a sidelink pathloss for a direction of relay UE to remote UE transmissions based on the first information and the measured second receive signal power.