US 12,323,920 B2
Cell search based on user equipment (UE) battery condition
Ehsan Ahmed Quadri Syed, Teaneck, NJ (US); Fnu Srinivas Kote Narasimhamurthy, San Diego, CA (US); Mohamed Lamine Haidara, New Providence, NJ (US); Mohammad H. Akhtar, Morris Plains, NJ (US); Syed A. Rahim, Allen, TX (US); and Muthukumaran Dhanapal, San Diego, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Jun. 10, 2022, as Appl. No. 17/806,391.
Prior Publication US 2023/0403650 A1, Dec. 14, 2023
Int. Cl. H04W 4/00 (2018.01); H04W 48/16 (2009.01); H04W 52/02 (2009.01)
CPC H04W 52/0261 (2013.01) [H04W 48/16 (2013.01); H04W 52/0241 (2013.01); H04W 52/0254 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A user equipment (UE), comprising:
a transceiver configured to wirelessly communicate with a base station; and
a processor communicatively coupled to the transceiver and configured to:
in response to a determination that a connection with the base station has been lost, perform a cell search cycle;
in response to a determination that the UE is in a no-service mode or in a limited-service mode after the cell search cycle, configure a sleep timer value based at least on a charge level of a battery of the UE, wherein configuring the sleep timer value comprises:
determining whether the charge level of the battery satisfies a first condition;
in response to determining that the charge level of the battery satisfies the first condition and the UE is in motion, increasing the sleep timer value from a first value to a second value greater than the first value;
in response to determining that the charge level of the battery satisfies the first condition and the UE is stationary, increasing the sleep timer value from the first value to a third value greater than the first value;
in response to determining that the charge level of the battery does not satisfy the first condition, determining whether the charge level of the battery satisfies a second condition;
in response to determining that the charge level of the battery satisfies the second condition and the UE is stationary:
comparing a search counter value indicating a number of cell search cycles with a search counter threshold; and
in response to the search counter value being greater than the search counter threshold, increasing the sleep timer value from the first value to a fourth value greater than the first value; and
perform a second cell search cycle after the configured sleep timer value.