US 12,081,316 B2
Intra-satellite handover
Xiao Feng Wang, San Diego, CA (US); Iyab Sakhnini, San Diego, CA (US); Jun Ma, San Diego, CA (US); and Peter Gaal, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Aug. 9, 2018, as Appl. No. 16/059,585.
Prior Publication US 2020/0052782 A1, Feb. 13, 2020
Int. Cl. H04B 7/185 (2006.01); H04W 74/00 (2009.01); H04W 76/11 (2018.01); H04W 76/27 (2018.01); H04W 84/06 (2009.01)
CPC H04B 7/18541 (2013.01) [H04W 74/006 (2013.01); H04W 76/11 (2018.02); H04W 76/27 (2018.02); H04W 84/06 (2013.01)] 37 Claims
OG exemplary drawing
 
1. A method for wireless communications at a user equipment (UE), comprising:
communicating, by the UE, with a satellite via a first beam associated with a first frequency transmitted by the satellite;
receiving, by the UE from the satellite, configuration information comprising a list of a plurality of beams transmitted by the satellite that are associated with a plurality of frequencies, the plurality of beams comprising at least the first beam and a second beam associated with a second frequency transmitted by the satellite, wherein the plurality of frequencies comprises at least the first frequency and the second frequency;
receiving, by the UE from the satellite, a synchronization signal for the first beam, the synchronization signal indicating a timing configuration for communications between the UE and the satellite via the first beam, wherein the timing configuration indicates both an upstream timing configuration and a downstream timing configuration;
determining, by the UE based at least in part on receiving the synchronization signal for the first beam, whether the timing configuration indicated via the synchronization signal for the communications between the UE and the satellite via the first beam associated with the first frequency is common for both the communications between the UE and the satellite via the first beam associated with the first frequency and for communications between the UE and the satellite via the second beam associated with the second frequency;
receiving, by the UE from the satellite, an indication for the UE to perform a handover procedure to transition from communicating with the satellite via the first beam associated with the first frequency to communicating with the satellite via the second beam associated with the second frequency, the indication transmitted by the satellite based at least in part on a motion of the UE relative to the satellite; and
after transitioning to the second beam, communicating, by the UE, with the satellite via the second beam while using the timing configuration that is common for the communications between the UE and the satellite via the first beam associated with the first frequency and for the communications between the UE and the satellite via the second beam associated with the second frequency, wherein the UE previously determined the timing configuration based at least in part on the synchronization signal received for the first beam.