name: NSSAA
full_form: Network Slice-specific Authentication and Authorization
context: This solution addresses the Key Issue#8 for REQ-NSCH-13 and is based on use of Nchf converged charging service by 5GS Network Functions involved in UE NSSAA procedures. AMF interacts with CHF during NSSAA procedure with the Network Slice-Specific Authentication and Authorization Function (NSSAAF) for a given UE and S-NSSAI for CHF to produce appropriate CDR. NSSAAF interacts with CHF during NSSAA procedure for a given UE and S-NSSAI for CHF to produce appropriate CDR. The solution applies for NSSAA, AAA Server triggered Network Slice-Specific Re-authentication and Re-authorization procedure and AAA Server triggered Slice-Specific Authorization Revocation. The AMF Charging characteristics (Annex A of TS 32.256[10]) is extended to include NSSAA related configuration. NSSAAF Charging characteristics pre-configured in NSSAAF includes NSSAA related information.
description: The Network Slice-Specific Authentication and Authorization Function (NSSAAF) is responsible for handling authentication and authorization procedures specific to network slices. It interacts with the Charging Function (CHF) to produce charging data records (CDRs) for a given user equipment (UE) and S-NSSAI.
explanation: The text describes NSSAAF as a function that performs specific tasks within a network slice context, including authentication, authorization, and interaction with the Charging Function. This clearly classifies it as a Network Function.
section_title: 6.8.2.1General description
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