US 11,871,283 B2
Service continuity implementation method, device, and service continuity implementation system
Dekui Sun, Shenzhen (CN); and Han Zhou, Shanghai (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Aug. 9, 2021, as Appl. No. 17/397,056.
Application 17/397,056 is a continuation of application No. 16/716,049, filed on Dec. 16, 2019, granted, now 11,115,876.
Application 16/716,049 is a continuation of application No. PCT/CN2017/089859, filed on Jun. 23, 2017.
Prior Publication US 2021/0368397 A1, Nov. 25, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 36/12 (2009.01); H04W 36/00 (2009.01)
CPC H04W 36/0016 (2013.01) [H04W 36/12 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A system, comprising:
a target user plane function entity; and
a session management function entity comprising:
one or more processors; and
a memory coupled to the one or more processors and configured to store computer-executable instructions that, when executed by the one or more processors, cause the session management function entity to:
select the target user plane function entity to serve a terminal;
send first path information to the target user plane function entity;
send second path information to a source user plane function entity, wherein the first path information and the second path information are for establishing a forwarding path between the target user plane function entity and the source user plane function entity; and
send a second routing rule to the target user plane function entity,
wherein the second routing rule specifies that data whose destination address is of a second application server (AS) is to be sent to the source user plane function entity, which is communicatively connected to the second AS, and
wherein the target user plane function entity is configured to receive the second routing rule from the session management function entity.