Network Slice Selection Function Functional Description

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Below are the Functionalities supported by Network Slice Selection Function (NSSF).

Selecting the set of Network Slice instances serving the UE,

Determining the Allowed NSSAI and, if needed, the mapping to the Subscribed S-NSSAIs,

Determining the Configured NSSAI and, if needed, the mapping to the Subscribed S-NSSAIs,

Determining the AMF Set to be used to serve the UE, or, based on configuration, a list of candidate AMF(s), possibly by querying the NRF.