US 11,990,980 B2
Handover control method and device
Jiangsheng Fan, Beijing (CN); and Jing Liang, Beijing (CN)
Assigned to Datang Mobile Communications Equipment Co., Ltd., Beijing (CN)
Appl. No. 17/416,786
Filed by DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD., Beijing (CN)
PCT Filed Sep. 5, 2019, PCT No. PCT/CN2019/104588
§ 371(c)(1), (2) Date Jun. 21, 2021,
PCT Pub. No. WO2020/125069, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 201811575205.7 (CN), filed on Dec. 21, 2018.
Prior Publication US 2022/0069902 A1, Mar. 3, 2022
Int. Cl. H04B 7/185 (2006.01); H04W 36/00 (2009.01); H04W 36/32 (2009.01); H04W 36/36 (2009.01); H04W 84/06 (2009.01)
CPC H04B 7/18541 (2013.01) [H04W 36/008375 (2023.05); H04W 36/32 (2013.01); H04W 36/36 (2013.01); H04W 84/06 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A handover control method, comprising:
receiving, by a source satellite base station, auxiliary information reported by a terminal;
determining, by the source satellite base station, at least one candidate satellite base station according to orbital map information of satellite base stations in a current region where the source satellite base station is located and the auxiliary information;
sending, by the source satellite base station, a handover request message to the at least one candidate satellite base station; wherein the handover request message comprises at least one of latest location information reported by the terminal, moving speed, moving direction, and tracking area identification information;
receiving, by the source satellite base station, a handover confirmation message returned by a candidate satellite base station; wherein the handover confirmation message is sent after the candidate satellite base station confirms being capable of accepting the handover request message according to load of the candidate satellite base station or a preset constraint;
taking, by the source satellite base station, one or more candidate satellite base stations which return handover confirmation messages as at least one candidate target satellite base stations according to a local strategy;
returning, by the source satellite base station, a handover command containing the at least one candidate target satellite base station to the terminal, to allow the terminal to determine a target satellite base station to be switched to according to the handover command and switches from the source satellite base station to the target satellite base station.