US 11,997,554 B2
Smart UE cell selection and reselection
Kun Lu, Bellevue, WA (US); Egil Gronstad, Encinitas, CA (US); Alan Denis MacDonald, Bellevue, WA (US); Scott Francis Migaldi, Cary, IL (US); John Humbert, Roeland Park, KS (US); Brett L. Christian, Independence, MO (US); Hsin Fu Henry Chiang, Bellevue, WA (US); and William M. Shvodian, McLean, VA (US)
Assigned to T-Mobile USA, Inc., Bellevue, WA (US)
Filed by T-Mobile USA, Inc., Bellevue, WA (US)
Filed on Mar. 30, 2022, as Appl. No. 17/708,696.
Prior Publication US 2023/0319658 A1, Oct. 5, 2023
Int. Cl. H04W 36/06 (2009.01); H04W 36/00 (2009.01)
CPC H04W 36/06 (2013.01) [H04W 36/00835 (2018.08)] 18 Claims
OG exemplary drawing
 
1. A method performed by a mobile device, the method comprising:
receiving a first system information block from a first base station, the first system information block indicating a first cell, a first tracking area, and a first frequency band;
initiating first communications operations in the first cell based at least in part on the first frequency band;
determining that initiating the first communications operations in the first cell was unsuccessful;
based at least in part on determining that initiating the first communications operations in the first cell was unsuccessful, storing an indicator of the first tracking area and an indicator of the first frequency band in a memory of the mobile device;
receiving a second system information block from a second base station, the second system information block indicating a second cell, a second tracking area, and a second frequency band;
determining that the second tracking area corresponds to the first tracking area based at least in part on the indicator of the first tracking area;
determining that the second frequency band corresponds to the first frequency band based at least in part on the indicator of the first frequency band;
based at least in part on determining that the second tracking area corresponds to the first tracking area and that the second frequency band corresponds to the first frequency band, determining to refrain from initiating second communications operations in the second cell; and
maintaining the indicator of the first tracking area and the indicator of the first frequency band in the memory of the mobile device until changing an airplane mode status of the mobile device or until power cycling the mobile device.