Network slice isolation information for session management function discovery
An access and mobility management function (AMF) receives a registration request for a wireless device. The AMF sends, to a network repository function (NRF) and in response to the registration request, a discovery request for an address of a session management function (SMF). The discovery request comprises network slice isolation information for at least one network slice. The AMF receives, from the NRF and based on the discover request, a discovery response comprising the address of the SMF. The AMF sends, to the SMF, a session create request to create a session for the wireless device.
1. A method comprising:
receiving, by an access and mobility management function (AMF), a registration request for a wireless device;
sending, by the AMF to a network repository function (NRF) and in response to the registration request, a discovery request for an address of a session management function (SMF), the discovery request comprising network slice isolation information for at least one network slice;
receiving, by the AMF from the NRF and based on the discover request, a discovery response comprising the address of the SMF; and
sending, by the AMF to the SMF, a session create request to create a session for the wireless device.
2. The method of claim 1 , wherein the discovery response further comprises a fully qualified domain name of the session management function.
3. The method of claim 1 , wherein the discovery request comprises a user identity of a wireless device.
4. The method of claim 1 , wherein the discovery request comprises at least one data network name.
5. The method of claim 1 , further comprising receiving, by the access and mobility management function from a wireless device, a third message requesting to establish a packet data unit session, wherein the third message comprising an allowed single network slice selection assistance information.
6. The method of claim 5 , wherein the third message comprises a network slice isolation information applied to the allowed single network slice selection assistance information.
7. The method of claim 1 , further comprising receiving, by the network repository function from the access and mobility management function, a fourth message requesting to release the session management function, wherein the fourth message comprises at least one of:
an address of the session management function;
an identifier of the session management function; or
a user identity of the wireless device.
8. The method of claim 1 , wherein the network slice isolation information comprises a first indicator to indicate a network slice of the at least one network slice is isolated from one or more other network slices.
9. The method of claim 1 , wherein the network slice isolation information comprises a network slice isolation level to indicate a level of the at least one network slice is isolated from one or more other network slices.
10. The method of claim 1 , wherein the network slice isolation information comprises a network slice instance identifier of the network slice.
11. An access and mobility management function (AMF) comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the AMF to:
receive a registration request for a wireless device;
send, to a network repository function (NRF) and in response to the registration request, a discovery request for an address of a session management function (SMF), the discovery request comprising network slice isolation information for at least one network slice;
receive, from the NRF and based on the discover request, a discovery response comprising the address of the SMF; and
send, to the SMF, a session create request to create a session for the wireless device.
12. The AMF of claim 11 , wherein the discovery response further comprises a fully qualified domain name of the session management function.
13. The AMF of claim 11 , wherein the discovery request comprises a user identity of a wireless device.
14. The AMF of claim 11 , wherein the discovery request comprises at least one data network name.
15. The AMF of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the AMF to receive, from a wireless device, a third message requesting to establish a packet data unit session, wherein the third message comprising an allowed single network slice selection assistance information.
16. The AMF of claim 15 , wherein the third message comprises a network slice isolation information applied to the allowed single network slice selection assistance information.
17. The AMF of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the AMF to transmit, to the network repository function, a fourth message requesting to release the session management function, wherein the fourth message comprises at least one of:
an address of the session management function;
an identifier of the session management function; or
a user identity of the wireless device.
18. The AMF of claim 11 , wherein the network slice isolation information comprises a first indicator to indicate a network slice of the at least one network slice is isolated from one or more other network slices.
19. The AMF of claim 11 , wherein the network slice isolation information comprises a network slice isolation level to indicate a level of the at least one network slice is isolated from one or more other network slices.
20. A system comprising:
a network repository function (NRF); and
an access and mobility management function (AMF) comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the AMF to:
receive a registration request for a wireless device;
send, to the NRF and in response to the registration request, a discovery request for an address of a session management function (SMF), the discovery request comprising network slice isolation information for at least one network slice;
receive, from the NRF and based on the discover request, a discovery response comprising the address of the SMF; and
send, to the SMF, a session create request to create a session for the wireless device.