Method, apparatus and system for service continuity between a 4G network and a 5G network
AssigneeHuawei Technologies Co., Ltd.
InventorsZhenyu Tao, Chuankui Jiang
Life of this patent
Estimating the term…
Abstract
A service continuity implementation method, a related device, and a system, where a mobility management device may select a 5G gateway for a 5G user equipment handed over to a 4G network, and establish a session with the 5G gateway. The 5G gateway may send a 5G-related parameter to the user equipment in advance. Therefore, after the user equipment moves from the 4G network to a 5G network, service continuity is maintained, that is, a service in the 4G network continues to be maintained in the 5G network.
Claims20
A service continuity implementation method, comprising:
- receiving, by a mobility management device, a tracking area update request message for a 4th generation (4G) network from a user equipment, wherein the tracking area update request message carries a user identifier and a 5th generation (5G) capability of the user equipment;
- triggering the user equipment to attach to the 4G network after determining, by the mobility management device based on the user identifier, that a user corresponding to the user equipment is a 5G user;
- receiving, by the mobility management device, an attach request from the user equipment;
- selecting, by the mobility management device in response to the attach request, a 5G gateway for the user equipment;
- and
- establishing a session with the 5G gateway.
A mobility management device, comprising:
- a non-volatile memory;
- and
- a processor coupled to the memory and configured to execute instructions stored in the memory to:
- receive a tracking area update request message for a 4th generation (4G) network from a user equipment, wherein the request message carries a user identifier and a 5th generation (5G) capability of the user equipment;
- determine, based on the user identifier, that a user corresponding to the user equipment is a 5G user;
- trigger the user equipment to attach to the 4G network;
- receive an attach request from the user equipment;
- select a 5G gateway for the user equipment responsive to the attach request;
- and
- establish a session with the 5G gateway.
A communication system, comprising:
- a 5th generation (5G) gateway;
- and
- a mobility management device configured to:
- receive a tracking area update request message for a 4th generation (4G) network from a user equipment, wherein the tracking area update request message carries a user identifier and a 5G capability of the user equipment;
- determine, based on the user identifier, that a user is a 5G user;
- trigger the user equipment to attach to the 4G network;
- receive an attach request from the user equipment;
- select a 5G gateway for the user equipment responsive to the attach request;
- and
- establish a session with the 5G gateway.
Dependencies are inferred from the claim text.