Service processing method and device

1. A service processing method, comprising:

receiving, by a terminal in a communication system wherein the communication system comprises at least a first network slice and a second network slice where the terminal accesses the first network slice and the second network slice simultaneously, first information of the first network slice, a priority corresponding to the first information, second information of the second network slice, and a priority corresponding to the second information;

responsive to a collision of a service of the first network slice with a service of the second network slice, preferentially processing, by the terminal, a service of a high-priority network slice based on the priorities; and

responsive to the priority of the first network slice being the same as the priority of the second network slice, preferentially processing one of the following:

a service of a high-load network slice; or

a service that is of a network slice and that arrives first.

2. The method according to claim 1 , wherein the first information of the first network slice comprises one or more of the following:

an identifier of the first network slice, a network slice instance identifier, single network slice selection assistance information (S-NSSAI), or a slice/service type; and

the second information of the second network slice comprises one or more of the following:

an identifier of the second network slice, a network slice instance identifier, S-NSSAI, or a slice/service type.

3. The method according to claim 1 , wherein: the first information includes a priority of first service type, and the second information includes a second service type, preferentially processing, by the terminal, a service of the high-priority network slice based on the priorities, comprises:

determining a higher priority of the first service type and the second service type;

preferentially processing a service of a network slice corresponding to a higher-priority of a service type.

4. The method according to claim 1 , further comprising receiving a first message including the first information of the first network slice, the priority corresponding to the first information, the second information of the second network slice, and the priority corresponding to the second information.

5. The method according to claim 4 , wherein the first message is a registration accept message; and

before the terminal receives the registration accept message, the method further comprises: sending, by the terminal, a registration request message to an access network device.

6. The method according to claim 1 , wherein:

each network slice includes:

an identifier of each network slice that the terminal subscribes to and that is supported by an access and mobility management function (AMF) and priority information of each network slice instance.

7. The method according to claim 1 , wherein:

each network slice includes:

a slice/service type of the network slice that the terminal subscribes to and that is supported by the AMF and priority information of each slice/service type.

8. The method according to claim 1 , wherein:

each network slice includes:

one or more pieces of single network slice selection assistance information (S-NSSAI) of the network slice that the terminal subscribes to and that is supported by the AMF and priority information corresponding to each piece of S-NSSAI.

9. A service processing method, comprising:

receiving, by an access and mobility management function (AMF) in a communication system wherein the communication system comprises a plurality of network slices accessed simultaneously by at least one terminal, the AMF being shared by the plurality of network slices, first information of the plurality of network slices that a terminal subscribes to and a priority corresponding to the first information;

responsive to services of the plurality of network slices colliding, preferentially processing, by the AMF, a service of a high-priority network slice based on the priority; and

responsive to the plurality of network slices being the same, preferentially processing one of:

a service of a high-load network slice; or

a service that is of a network slice and that arrives first.

10. The method according to claim 9 , wherein the receiving, by the AMF, comprises:

receiving, by the AMF, a first message that includes the first information sent by a second device, wherein the first message comprises first information of one or more network slices that the terminal subscribes to and the priority corresponding to the first information, and the second device is a user data management (UDM) or a policy control function (PCF); and

before the receiving, by an AMF, the first message, the method further comprises:

sending, by the AMF, a first request to the second device, wherein the first request is used to request the first information of the one or more network slices that the terminal subscribes to and the priority corresponding to the first information.

11. The method according to claim 10 , wherein the first information of the network slice comprises one or more of the following:

an identifier of the high-priority network slice, a network slice instance identifier, single network slice selection assistance information (S-NSSAI), or a slice/service type.

12. The method according to claim 10 , after the receiving, by the AMF, further comprising:

sending, by the AMF, a registration accept message to an access network device, wherein the registration accept message comprises a first message that includes the first information of one or more network slices that the terminal subscribes to and the priority corresponding to the first information; and

before the receiving, by an AMF, the first message, the method further comprises:

receiving, by the AMF, a registration request message that is sent by the terminal and forwarded by the access network device.

13. The method according to claim 9 , wherein the receiving, by the AMF, comprises:

receiving, by the AMF, a first message that includes the first information sent by a policy function entity (PCF), wherein the first message comprises the priority corresponding to the first information of the high-priority network slice; and

before the receiving, by an AMF, the first message, the method further comprises:

sending, by the AMF, a second request to the policy function entity PCF, wherein the second request is used to request a priority of the high-priority network slice that the terminal subscribes to, and the second request comprises the first information.

14. The method according to claim 9 , wherein each network slice:

an identifier of each network slice instance that the terminal subscribes to and that is supported by the AMF and priority information of each network slice instance.

15. The method according to claim 9 , wherein each network slice includes one of the following:

a slice/service type of the network slice that the terminal subscribes to and that is supported by the AMF and priority information of each slice/service type; or

one or more pieces of single network slice selection assistance information (S-NSSAI) of the network slice that the terminal subscribes to and that is supported by the AMF and priority information corresponding to each piece of S-NSSAI.

16. An apparatus in a communication system, wherein the communication system comprises:

at least one processor; and

at least one memory, the at least one memory comprising instructions that when executed by the at least one processor, cause the apparatus to perform, at least, the following while the first network slice and the second network slice are accessed simultaneously:

receiving first information of a first network slice, a priority corresponding to the first information, second information of a second network slice, and a priority corresponding to the second information;

responsive to a service of the first network slice colliding with a service of the second network slice, preferentially processing a service of a high-priority network slice based on the priorities; and

responsive to the priority of the first network slice being the same as the priority of the second network slice, preferentially processing one of the following:

a service of a high-load network slice; or

a service that is of a network slice and that arrives first.

17. The apparatus according to claim 16 , wherein the first information of the first network slice comprises one or more of the following:

an identifier of the first network slice, a network slice instance identifier, single network slice selection assistance information (S-NSSAI), or a slice/service type; and

the second information of the second network slice comprises one or more of the following: an identifier of the second network slice, a network slice instance identifier, S-NSSAI, or a slice/service type.

18. The apparatus according to claim 16 , wherein receiving the first information, the priority corresponding to the first information, the second information, and the priority corresponding to the second information comprises receiving a first message including the first information of the first network slice, the priority corresponding to the first information, second information of the second network slice, and the priority corresponding to the second information.

19. The apparatus according to claim 18 , wherein a first message that includes the first information is a registration accept message; and

the at least one memory further comprising instructions that when executed by the at least one processor, cause the apparatus to perform, at least, the following:

sending a registration request message to an access network device before the apparatus receives the registration accept message.