5G • Services
Allowed NSSAI
Authorized Slice Set
Set of S-NSSAIs authorized by the serving AMF for the UE to use in the current Registration Area.
Technical Explanation
Delivered to the UE in the Registration Accept message, the Allowed NSSAI contains the slices that the UE is officially permitted to access in its current Tracking Area. The UE can immediately establish PDU sessions matching any S-NSSAI present in the Allowed NSSAI.
Key Functions
- List of authorized network slices returned in Registration Accept
- Valid across the UE's current assigned Registration Area
- Enables immediate establishment of user plane PDU sessions on allowed slices
Specifications
3GPP TS 23.501, TS 24.501
Interfaces
N1
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