Network slice for restricted local operator services in a wireless network

1. A method comprising:

sending, by a wireless device to an access and mobility function (AMF), a registration request message comprising:

a first parameter indicating a request for restricted local operator services (RLOS); and

a second parameter indicating a requested network slice selection assistance information (NSSAI) for the RLOS;

receiving, from the AMF, a registration accept message comprising an allowed NSSAI for the RLOS allowed for the wireless device; and

sending, by the wireless device, packets of the RLOS.

2. The method of claim 1 , wherein the requested NSSAI is at least one first allowed NSSAI.

3. The method of claim 1 , wherein the allowed NSSAI comprises an eMBB slice type.

4. The method of claim 1 , wherein the RLOS allowed for the wireless device comprises a voice over long term evolution (VOLTE) service.

5. The method of claim 1 , further comprising determining, by the AMF, the allowed NSSAI for the RLOS based on the requested NSSAI received from the wireless device.

6. The method of claim 1 , further comprising receiving, by the wireless device from a base station, a first message indicating that a network supports the RLOS, wherein the first message comprises at least one of:

a first information element indicating the allowed NSSAI for the RLOS; or

an allowed packet data unit (PDU) session type for the RLOS.

7. The method of claim 6 , wherein the allowed NSSAI is the same as the allowed NSSAI.

8. The method of claim 1 , wherein the registration accept message further comprises one or more access and mobility management policies.

9. The method of claim 8 , wherein the one or more access and mobility management policies comprises at least one of:

a user equipment (UE) access selection policy for the RLOS;

a packet data unit (PDU) session selection policy for the RLOS; or

allowed PDU session type(s) for the RLOS.

10. The method of claim 1 , wherein the registration accept message further comprises RLOS information, and the RLOS information comprises a service type of the RLOS allowed for the wireless device.

11. The method of claim 10 , wherein the RLOS information further indicates application information associated with the service type.

12. The method of claim 11 , wherein the application information comprises at least one of:

a service data flow filter;

an application identifier; or

a uniform resource locator (URL).

13. The method of claim 12 , further comprising sending, by the wireless device to a base station and based on the RLOS information, a third message comprising a restricted service type and indicating a service request for the RLOS.

14. The method of claim 13 , further comprising sending, by the AMF to a policy control function (PCF), a policy association establishment request message comprising at least one of:

an information element indicating a request for the RLOS;

a allowed NSSAI for the RLOS; or

a data network name for the RLOS.

15. The method of claim 14 , further comprising receiving, by the PCF from a network function (NF), the RLOS information.

16. The method of claim 15 , further comprising determining, by the PCF, one or more access and mobility management policies for the RLOS.

17. The method of claim 16 , wherein the determining is based on the RLOS information received from the NF.

18. The method of claim 16 , wherein the determining is based on the allowed NSSAI for the RLOS.

19. The method of claim 18 , further comprising sending, by the PCF to the AMF, the one or more access and mobility management policies.

20. The method of claim 19 , further comprising sending, by the PCF to the AMF, the RLOS information.