Method and device for network slice authentication

1. An authentication method, comprising:

acquiring, by a terminal device, first indication information, wherein the first indication information is used to indicate whether authentication needs to be performed on the terminal device by a corresponding third-party server for at least one network slice;

wherein the acquiring, by a terminal device, first indication information, comprises:

acquiring, by the terminal device, one or more single network slice selection assistance information (S-NSSAI), wherein the one or more S-NSSAI are used to determine whether the authentication needs to be performed on the terminal device by the corresponding third-party server for the at least one network slice;

the method further comprises:

determining, by the terminal device, based on the first indication information, whether the authentication needs to be performed for a network slice corresponding to a first S-NSSAI.

2. The method according to claim 1 , wherein the acquiring, by a terminal device, first indication information, comprises:

receiving, by the terminal device, a first registration response message sent by a network device, wherein the first registration response message comprises the first indication information, and the first registration response message is a response message with respect to a first registration request message sent by the terminal device to the network device.

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

sending, by the terminal device, a non-access stratum (NAS) request message to a network device, wherein the NAS request message comprises a protocol data unit (PDU) session establishment request and the first S-NSSAI, and wherein, based on the first indication, the authentication for the network slice corresponding to the first S-NSSAI is not needed to be performed.

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

receiving, by the terminal device, a second registration response message from a network device, wherein the second registration response message comprises authentication result information, and the authentication result information indicates information about whether the authentication performed on the terminal device by the corresponding third-party server passes for a network slice corresponding to at least one S-NSSAI.

5. The method according to claim 4 , wherein the second registration response message comprises rejected information for a second S-NSSAI and a rejected reason for the second S-NSSAI.

6. The method according to claim 1 , wherein the first indication information is acquired by the terminal device from an access and mobility management function (AMF).

7. A terminal device, comprising: a processor and a memory, wherein the memory is configured to store a computer program, the processor when executing the computer program, being configured to:

acquire first indication information, wherein the first indication information is used to indicate whether authentication needs to be performed on the terminal device by a corresponding third-party server for at least one network slice;

wherein the processor is configured to:

acquire one or more single network slice selection assistance information (S-NSSAI), wherein the one or more S-NSSAI are used to determine whether the authentication needs to be performed on the terminal device by the corresponding third-party server for the at least one network slice; and

determine, based on the first indication information, whether the authentication needs to be performed for a network slice corresponding to a first S-NSSAI.

8. The terminal device according to claim 7 , wherein the processor is configured to:

control an input interface to receive a first registration response message sent by a network device, wherein the first registration response message comprises the first indication information, and the first registration response message is a response message with respect to a first registration request message sent by the terminal device to the network device.

9. The terminal device according to claim 7 , wherein the processor is further configured to:

control an output interface to send a non-access stratum (NAS) request message to a network device, wherein the NAS request message comprises a protocol data unit (PDU) session establishment request and the first S-NSSAI, and wherein, based on the first indication, the authentication for the network slice corresponding to the first S-NSSAI is not needed to be performed.

10. The terminal device according to claim 7 , wherein the processor is further configured to:

control an input interface to receive a second registration response message from a network device, wherein the second registration response message comprises authentication result information, and the authentication result information indicates information about whether the authentication performed on the terminal device by the corresponding third-party server passes for a network slice corresponding to at least one S-NSSAI.

11. The terminal device according to claim 10 , wherein the second registration response message comprises rejected information for a second S-NSSAI and a rejected reason for the second S-NSSAI.

12. The terminal device according to claim 7 , wherein the first indication information is acquired by the terminal device from an access and mobility management function (AMF).

13. A network device, comprising: a processor and a memory, wherein the memory is configured to store a computer program, the processor when executing the computer program, being configured to:

configure first indication information for a terminal device, wherein the first indication information is used to indicate whether authentication needs to be performed on the terminal device by a corresponding third-party server for at least one network slice;

wherein the first indication information comprises one or more single network slice selection assistance information (S-NSSAI), and the one or more S-NSSAI are used to determine whether the authentication needs to be performed on the terminal device by the corresponding third-party server for the at least one network slice.

14. The network device according to claim 13 , wherein the first indication information is sent to the terminal device by the network device through signaling or through an open mobile alliance (OMA).

15. The network device according to claim 13 , wherein the processor is configured to:

control an input interface to receive a first registration request message sent by the terminal device; and

control an output interface to send a first registration response message to the terminal device, wherein the first registration response message comprises the first indication information.

16. The network device according to claim 13 , wherein the processor is configured to:

control an input interface to receive a second registration request message sent by the terminal device;

control an output interface to send a second registration response message to the terminal device, wherein the second registration response message comprises authentication result information, and the authentication result information indicates information about whether the authentication performed on the terminal device by the corresponding third-party server passes for a network slice corresponding to at least one S-NSSAI.

17. The network device according to claim 16 , wherein the authentication result information is received by the network device from the corresponding third-party server.

18. The network device according to claim 16 , wherein the second registration response message comprises registration success message, wherein the authentication result information indicates that the authentication performed on the terminal device by the corresponding third-party server passes for a network slice corresponding to a second S-NSSAI in the at least one S-NSSAI and that the terminal device has signed to the network slice corresponding to the second S-NSSAI.

19. The network device according to claim 16 , wherein the second registration response message comprises rejected information for a second S-NSSAI in the at least one S-NSSAI and a rejected reason for the second S-NSSAI.

20. The network device according to claim 13 , wherein the third-party server is located inside a 3rd generation partner project (3GPP) network or outside the 3GPP network.

21. The network device according to claim 13 , wherein the network device is an access and mobility management function (AMF).