US 12,150,004 B2
Mobile handover method and related device
Wei Lu, Shenzhen (CN); Dewang Ren, Xi'an (CN); and Weisheng Jin, Shanghai (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Apr. 21, 2021, as Appl. No. 17/236,720.
Application 17/236,720 is a continuation of application No. PCT/CN2019/112423, filed on Oct. 22, 2019.
Claims priority of application No. 201811232968.1 (CN), filed on Oct. 22, 2018.
Prior Publication US 2021/0250838 A1, Aug. 12, 2021
Int. Cl. H04W 36/32 (2009.01); H04W 36/00 (2009.01); H04W 36/08 (2009.01); H04W 76/11 (2018.01)
CPC H04W 36/32 (2013.01) [H04W 36/0016 (2013.01); H04W 36/08 (2013.01); H04W 76/11 (2018.02)] 17 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, by a first core network device, an indication indicating that a terminal device is to be handed over to a target access network device, the indication being sent by a source access network in a handover preparation phase;
sending, by the first core network device to a second core network device, the indication indicating that the terminal device is to be handed over to the target access network device;
receiving, by the second core network device from the first core network device, the indication;
receiving, by the second core network device from a first application server, application server information corresponding to the target access network device; and
reselecting, by the second core network device based on the indication and the application server information, a target user plane function device for serving the terminal device.