User plane connection establishment method and apparatus, and system
Embodiments of this application relate to the field of communications technologies, and provide example user plane connection establishment methods apparatuses, and systems to establish a user plane connection between an access network gateway and an interworking function network element-user plane. One example method includes determining, by an interworking function network element-control plane, granularity information of a user plane connection between an interworking function network element-user plane and an access network gateway. The interworking function network element-control plane can then send the granularity information of the user plane connection to the interworking function network element-user plane and the access network gateway, where the granularity information of the user plane connection is used to establish the user plane connection between the interworking function network element-user plane and the access network gateway.
1. A user plane connection establishment method, comprising:
determining, by an interworking function network element-control plane, granularity information of a user plane connection between an interworking function network element-user plane and an access network gateway; and
sending, by the interworking function network element-control plane, the granularity information of the user plane connection to the interworking function network element-user plane and the access network gateway, wherein the granularity information of the user plane connection is used to establish the user plane connection between the interworking function network element-user plane and the access network gateway.
2. The method according to claim 1 , wherein the determining, by an interworking function network element-control plane, granularity information of a user plane connection between an interworking function network element-user plane and an access network gateway comprises:
determining, by the interworking function network element-control plane, the granularity information of the user plane connection based on at least one of terminal identifier information or policy information.
3. The method according to claim 1 , wherein the granularity information of the user plane connection comprises information about the user plane connection at an access network gateway granularity or information about the user plane connection at a terminal granularity.
4. The method according to claim 1 , wherein the granularity information of the user plane connection comprises information about the user plane connection at a session granularity.
5. The method according to claim 1 , wherein the method further comprises:
sending, by the interworking function network element-control plane, data encapsulation information of the user plane connection to the interworking function network element-user plane and the access network gateway.
6. The method according to claim 2 , wherein the method further comprises:
receiving, by the interworking function network element-control plane, a first request message from the access network gateway, wherein the first request message comprises the terminal identifier information and at least one of a request for establishing the user plane connection or an authentication request message, and wherein the authentication request message is used to request to authenticate a terminal.
7. The method according to claim 6 , wherein the method further comprises:
sending, by the interworking function network element-control plane, the terminal identifier information corresponding to the granularity information to the interworking function network element-user plane and the access network gateway.
8. The method according to claim 6 , wherein the method further comprises:
sending, by the interworking function network element-control plane, the terminal identifier information corresponding to the granularity information and session information corresponding to the terminal to the access network gateway.
9. The method according to claim 1 , wherein the method further comprises:
determining, by the interworking function network element-control plane, user plane tunnel information, wherein the user plane tunnel information comprises information about a user plane network element and information about the interworking function network element-user plane;
sending, by the interworking function network element-control plane, the information about the interworking function network element-user plane to the user plane network element; and
sending, by the interworking function network element-control plane, the information about the user plane network element and session information corresponding to a terminal to the interworking function network element-user plane.
10. The method according to claim 1 , further comprising:
receiving, by the access network gateway from the interworking function network element-control plane, the granularity information of the user plane connection; and
establishing, by the access network gateway, the user plane connection between the interworking function network element-user plane and the access network gateway based on the granularity information of the user plane connection.
11. A communications apparatus, comprising:
at least one processor; and
one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to:
determine granularity information of a user plane connection between an interworking function network element-user plane and an access network gateway; and
send the granularity information of the user plane connection to the interworking function network element-user plane and the access network gateway, wherein the granularity information of the user plane connection is used to establish the user plane connection between the interworking function network element-user plane and the access network gateway.
12. The apparatus according to claim 11 , wherein the programming instructions are for execution by the at least one processor to:
determine the granularity information of the user plane connection based on at least one of terminal identifier information or policy information.
13. The apparatus according to claim 11 , wherein the granularity information of the user plane connection comprises information about the user plane connection at an access network gateway granularity or information about the user plane connection at a terminal granularity.
14. The apparatus according to claim 11 , wherein the granularity information of the user plane connection comprises information about the user plane connection at a session granularity.
15. The apparatus according to claim 11 , wherein the programming instructions are for execution by the at least one processor to:
send data encapsulation information of the user plane connection to the interworking function network element-user plane and the access network gateway.
16. The apparatus according to claim 12 , wherein the programming instructions are for execution by the at least one processor to:
receive a first request message from the access network gateway, wherein the first request message comprises the terminal identifier information and at least one of a request for establishing the user plane connection or an authentication request message, and wherein the authentication request message is used to request to authenticate a terminal.
17. The apparatus according to claim 16 , wherein the programming instructions are for execution by the at least one processor to:
send the terminal identifier information corresponding to the granularity information to the interworking function network element-user plane and the access network gateway.
18. The apparatus according to claim 16 , wherein the programming instructions are for execution by the at least one processor to:
send the terminal identifier information corresponding to the granularity information and session information corresponding to the terminal to the access network gateway.
19. The apparatus according to claim 11 , wherein the programming instructions are for execution by the at least one processor to:
determine user plane tunnel information, wherein the user plane tunnel information comprises information about a user plane network element and information about the interworking function network element-user plane;
send the information about the interworking function network element-user plane to the user plane network element; and
send the information about the user plane network element and session information corresponding to a terminal to the interworking function network element-user plane.
20. A non-transitory computer readable storage medium storing a computer program, wherein the computer program comprises instructions, that when executed by at least one processor, cause the at least one processor to:
determine granularity information of a user plane connection between an interworking function network element-user plane and an access network gateway; and
send the granularity information of the user plane connection to the interworking function network element-user plane and the access network gateway, wherein the granularity information of the user plane connection is used to establish the user plane connection between the interworking function network element-user plane and the access network gateway.