JPL 5G Network Slice Selection Function (NSSF) Partner Validated

The JPL NSSF provides consumer network functions such as AMF or NSSF in a different PLMN, and services to retrieve the information related to a network slice in both non-roaming and roaming scenarios. Based on the Network Slice Selection Assistance Information (NSSAI) configured in the UE, current Tracking Area (TA), and the NSSAIs provisioned for the UE in the network, NSSF selects the network slice to serve the UE. It determines the list of allowed NSSAIs for the subscriber and then maps it with the subscriber NSSAI. NSSF provides a list AMFs (AMF-Set) to the consumer Network Function (NF) to select a suitable AMF for serving the UE. The configured list of candidate AMFs is available at NSSF for each NSSAI. NSSF also provides the list of allowed NSSAIs to the consumer network function.

The JPL NSSF exposes provisioning interface to configure slice configuration data.
The Network Slice Provisioning or NSP Portal is a tool that has been created to assist with the creation of slice service-specific configuration in the network using a single portal. The portal provides the following functions for NSSF:
▪ Slice provisioning in NSSF
▪ NSSAI mapping with VPLMN
▪ Slice restriction for roamers
▪ HPLMN list management

The JPL NSSF stores the slice mapping data of vPLMNand hPLMNslices for roaming use cases during registration procedures.