US 12,231,874 B2
Occupied target channel notification for conditional handovers with unlicensed frequency bands
Henry Chang, San Diego, CA (US); and Masato Fujishiro, Yokohama (JP)
Assigned to Kyocera Corporation, Kyoto (JP)
Appl. No. 17/634,049
Filed by Kyocera Corporation, Kyoto (JP); Henry Chang, San Diego, CA (US); and Masato Fujishiro, Yokohama (JP)
PCT Filed Aug. 11, 2020, PCT No. PCT/US2020/045727
§ 371(c)(1), (2) Date Feb. 9, 2022,
PCT Pub. No. WO2021/030324, PCT Pub. Date Feb. 18, 2021.
Prior Publication US 2022/0330107 A1, Oct. 13, 2022
Int. Cl. H04W 36/08 (2009.01); H04W 36/30 (2009.01); H04W 36/36 (2009.01); H04W 36/00 (2009.01)
CPC H04W 36/08 (2013.01) [H04W 36/30 (2013.01); H04W 36/362 (2023.05); H04W 36/0072 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method performed at a communication device, the method comprising:
receiving, from a serving base station providing a source cell, a conditional handover command identifying a target frequency on a target cell for conditional handover;
determining conditions have been met for the conditional handover;
determining the target frequency is not available for the conditional handover; and
transmitting, to the serving base station, an indication that the target frequency is unavailable for the conditional handover.