1 Scope

29.5443GPP5G SystemRelease 18Secured Packet Application Function (SP-AF) servicesStage 3TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

The present document specifies the stage 3 protocol and data model for the Nspaf Service Based Interface. It provides stage 3 protocol definitions and message flows, and specifies the API for each service offered by the SP-AF.

The 5G System stage 2 architecture and procedures are specified in 3GPP TS 23.501 [2] and 3GPP TS 23.502 [3].

The Technical Realization of the Service Based Architecture and the Principles and Guidelines for Services Definition are specified in 3GPP TS 29.500 [4] and 3GPP TS 29.501 [5].