5.2.20 NSSAAF services
23.5023GPPProcedures for the 5G System (5GS)Release 18TS
5.2.20.1 General
The following table illustrates the NSSAAF Services.
Table 5.2.20-1: List of NSSAAF Services
|
Service Name |
Service Operations |
Operation Semantics |
Example Consumer(s) |
|
Nnssaaf_NSSAA |
Authenticate |
Request/Response |
AMF |
|
Re-AuthenticationNotification |
Notify |
AMF |
|
|
RevocationNotification |
Notify |
AMF |
|
|
Nnssaaf_AIW |
Authenticate |
Request/Response |
AUSF |
5.2.20.2 Nnssaaf_NSSAA service
5.2.20.2.1 General
Service Description: The NSSAAF provides Network Slice- Specific Authentication and Authorization (NSSAA) service to the requester NF by relaying EAP messages towards a AAA-S or AAA-P and performing related protocol conversion as needed. It also provides notification to the current AMF where the UE is of the need to re-authenticate and re-authorize the UE or to revoke the UE authorization. The AMF to receive the notification is implicitly subscribed and it is found in the UDM by providing the UE GPSI.
5.2.20.2.2 Nnssaaf_NSSAA_Authenticate service operation
See TS 33.501 [15].
5.2.20.2.3 Nnssaaf_NSSAA_Re-AuthenticationNotification service operation
See TS 33.501 [15].
5.2.20.2.4 Nnssaaf_NSSAA_RevocationNotification service operation
See TS 33.501 [15].
5.2.20.3 Nnssaaf_AIW service
5.2.20.3.1 General
Service Description: The NSSAAF provides Authentication and Authorization service to the requester NF by relaying EAP messages towards a AAA-S or AAA-P and performing related protocol conversion as needed.
5.2.20.3.2 Nnssaaf_AIW_Authenticate service operation
See TS 33.501 [15].