US 11,991,571 B2
Conditional handover in wireless networks
Candy Yiu, Portland, OR (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/276,017
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Sep. 11, 2019, PCT No. PCT/US2019/050622
§ 371(c)(1), (2) Date Mar. 12, 2021,
PCT Pub. No. WO2020/060822, PCT Pub. Date Mar. 26, 2020.
Claims priority of provisional application 62/733,820, filed on Sep. 20, 2018.
Prior Publication US 2022/0070746 A1, Mar. 3, 2022
Int. Cl. H04W 36/36 (2009.01); H04L 5/00 (2006.01); H04W 36/00 (2009.01); H04W 74/0833 (2024.01)
CPC H04W 36/00837 (2018.08) [H04L 5/0053 (2013.01); H04W 36/0058 (2018.08); H04W 74/0841 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
at a user equipment device (UE), in association with a conditional handover between a source base station (SBS) and a target base station (TBS) in a wireless network:
receiving, from the SBS, measurement configuration information, the measurement configuration information indicating a first threshold associated with a measurement event related to the TBS, wherein the first threshold is for triggering measurement reporting;
comparing a measurement associated with the measurement event to the first threshold;
in response to the comparison, transmitting, to the SBS, a measurement report; and
receiving, from the SBS, radio resource control (RRC) signaling, the RRC signaling including a conditional handover command for handover from the SBS to the TBS, the conditional handover command associated with a second threshold for the measurement event, wherein the conditional handover command is based on a handover acknowledgement from the TBS responsive to a conditional handover request form the SBS to the TBS, wherein the RRC signaling further includes an offset for exiting the conditional handover.