US 11,671,932 B2
Timing adjust for a non-terrestrial network
Huilin Xu, San Diego, CA (US); Jun Ma, San Diego, CA (US); Qiang Wu, San Diego, CA (US); Xiao Feng Wang, San Diego, CA (US); Iyab Issam Sakhnini, San Diego, CA (US); Dan Zhang, San Diego, CA (US); and Liangping Ma, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jan. 19, 2021, as Appl. No. 17/152,693.
Claims priority of provisional application 62/963,377, filed on Jan. 20, 2020.
Prior Publication US 2021/0227481 A1, Jul. 22, 2021
Int. Cl. H04W 56/00 (2009.01); H04W 68/00 (2009.01); H04W 74/08 (2009.01); H04W 76/11 (2018.01); H04W 76/27 (2018.01); H04W 84/06 (2009.01)
CPC H04W 56/005 (2013.01) [H04W 68/005 (2013.01); H04W 74/0833 (2013.01); H04W 76/11 (2018.02); H04W 76/27 (2018.02); H04W 84/06 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method for wireless communication at a first user equipment, comprising:
receiving a first message via a first feeder link for a non-terrestrial network, the first message indicating a feeder link switch from the first feeder link to a second feeder link for the non-terrestrial network, the first message further indicating that the first user equipment is to transmit a physical random access channel (PRACH) preamble via the second feeder link prior to the feeder link switch;
transmitting the PRACH preamble via the second feeder link prior to the feeder link switch;
receiving a second message via the second feeder link, the second message indicating a timing adjust value to be used by a plurality of user equipment including the first user equipment for communication via the second feeder link; and
communicating via the second feeder link according to the timing adjust value.