Application relocation method and apparatus

1. An application relocation method, comprising:

receiving, by a source edge enabler server (EES) from a third generation partnership project (3GPP) core network, a third message indicating a terminal apparatus user plane path change;

sending, by the source EES to a target EES in accordance with the third message, a first message that is used to request to relocate an application of the terminal apparatus, wherein the first message comprises;

an identifier of the terminal apparatus, and

an identifier of the application; and

receiving, by the source EES from the target EES in response to the first message, a second message that is used to indicate whether a relocation of the application of the terminal apparatus is allowed.

2. The method according to claim 1 , further comprising:

determining, by the source EES in response to the third message, to relocate the application of the terminal apparatus.

3. The method according to claim 1 , further comprising:

sending, by the source EES to a source application instance, a fourth message that is used to indicate the user plane path of the terminal apparatus has changed, and wherein the fourth message is a request to determine whether to relocate the application of the terminal apparatus;

receiving, by the source EES from the source application instance, a sixth message that is a request to relocate the application of the terminal apparatus.

4. The method according to claim 1 , wherein the first message further comprises an address of a target application instance, and wherein the target application instance is an application instance that is allowed to accept the relocation of the application.

5. The method according to claim 1 , wherein, in accordance with the second request being used to indicate that the relocation of the application is allowed, the second message comprises at least one of the group consisting of:

the identifier of the terminal apparatus,

the identifier of the application, an address of a target application instance, and

a port number used for the relocation of the application; and

wherein the target application instance is an application instance that belongs to the application and is associated with the target EES.

6. The method according to claim 1 , further comprising:

sending, by the source EES to a source application instance, a fifth message that is used to request to relocate the application of the terminal apparatus, wherein the source application instance is an application instance that belongs to the application and is associated with the source EES.

7. The method according to claim 1 , further comprising:

receiving, by the target EES, the first message from the source EES; and

sending, by the target EES, the second message to the source EES.

8. The method according to claim 7 , wherein the first message further comprises an address of a target application instance, and

wherein the method further comprises:

selecting, by the target EES, the target application instance indicated by the address of the target application instance in the first massage.

9. The method according to claim 7 , further comprising:

determining, by the target EES based on the first message, whether the relocation of the application of the terminal apparatus is allowed, and

wherein the sending the second message comprises:

sending, by the target EES to the source EES in response to determining that the relocation of the application of the terminal apparatus is allowed, the second message to indicate that the requested relocation of the application of the terminal apparatus is allowed.

10. The method according to claim 7 , wherein, in accordance with the second request being used to indicate that the relocation of the application is allowed, the second message comprises at least one of the group consisting of:

the identifier of the terminal apparatus,

the identifier of the application, an address of a target application instance, and

a port number used for the relocation of the application; and

wherein the target application instance is the application instance that belongs to the application and is associated with the target EES.

11. The method according to claim 3 , further comprising:

receiving, by the source application instance, the fourth message;

determining, by the source application instance in response to the fourth message, to relocate the application of the terminal apparatus; and

sending the sixth message to the source EES.

12. An apparatus, comprising at least one processor, wherein

the at least one processor is configured to read instructions from at least one memory coupled to the processor and execute the instructions to cause the apparatus to:

receive, from a third generation partnership project (3GPP) core network, a third message indicating a terminal apparatus user plane path change;

send, to a target edge enabler server (EES) in accordance with the third message, a first message that is used to request to relocate an application of the terminal apparatus, wherein the first message comprises:

an identifier of the terminal apparatus, and

an identifier of the application; and

receive, from the target EES in response to the first message, a second message that is used to indicate whether a relocation of the application of the terminal apparatus is allowed.

13. The apparatus according to claim 12 , wherein the processor is configured to execute the instructions further to cause the apparatus to:

determining, in response to the third message, to relocate the application of the terminal apparatus.

14. The apparatus according to claim 12 , wherein the processor is configured to execute the instructions further to cause the apparatus to:

send, to a source application instance, a fourth message that is used to indicate the user plane path of the terminal apparatus has changed, and wherein the fourth message is a request to determine whether to relocate the application of the terminal apparatus;

receive, from the source application instance, a sixth message that is used to request to relocate the application of the terminal apparatus.

15. The apparatus according to claim 13 , wherein, in accordance with the second request being used to indicate that the relocation of the application is allowed, the second message comprises at least one of the group consisting of:

the identifier of the terminal apparatus,

the identifier of the application, an address of a target application instance, and

a port number used for the relocation of the application; and

wherein the target application instance is an application instance that belongs to the application and is associated with the target EES.

16. The apparatus according to claim 12 , wherein the processor is configured to execute the instructions further to cause the apparatus to:

send, to a source application instance, a fifth message that is used to request to relocate the application of the terminal apparatus, wherein the source application instance is an application instance that belongs to the application and is associated with the apparatus.

17. A communication system, comprising:

a source edge enabler server (EES); and

a target EES, wherein

the source EES is configured to:

receive, from a third generation partnership project (3GPP) core network, a third message indicating a terminal apparatus user plane path change;

send, to the target EES in accordance with the third message, a first message that is used to request to relocate an application of the terminal apparatus, wherein the first message comprises:

an identifier of the terminal apparatus, and

an identifier of the application; and

receive, from the target EES in response to the first message, a second message that is used to indicate whether a relocation of the application of the terminal apparatus is allowed; and

the target EES is configured to:

receive the first message from the source EES; and

send, in response to receiving the first message, the second message to the source EES.

18. The system according to claim 17 , wherein the source EES is further configured to:

determine, in response to the third message, to relocate the application of the terminal apparatus.

19. The system according to claim 17 , wherein the source EES is further configured to:

send, to a source application instance, a fourth message that is used to indicate the user plane path of the terminal apparatus has changed, and wherein the fourth message is a request to determine whether to relocate the application of the terminal apparatus;

receive, from the source application instance, a sixth message that is a request to relocate the application of the terminal apparatus.

20. The system according to claim 19 , further comprising: the source application instance configured to:

receive the fourth message;

determine, in response to the fourth message, to relocate the application of the terminal apparatus; and

send the sixth message to the source EES.