4 General description

24.5493GPPNetwork slice capability enablement- Service Enabler Architecture Layer for Verticals (SEAL)Protocol specificationRelease 17Stage 3TS

The present document enables a SEAL Network Slice Capability Enablement Client (SNSCE-C) and a Vertical Application Layer server (VAL server) that communicate with a SEAL Network Slice Capability Enablement Server (SNSCE-S). The network slice capability enablement is a SEAL service that provides the network slice capability enablement related capabilities to one or more vertical applications.

In a trusted network, the network slice capability enablement can be used to re-map a vertical application to different slices based on the configuration of the SNSCE-S for updating the application traffic. Therefore, the SNSCE-S acts as an Application Function (AF) and influences the UE’s URSP rules for the application traffic by providing guidance on the route selection descriptors S-NSSAI and DNN.

NOTE: In this release, S-NSSAI and DNN are only used as the route selection descriptor.