5G System; Network Exposure (NE) function services for Non-IP Data Delivery (NIDD) and Short Message Services (SMS); Stage 3
The present document specifies the stage 3 protocol and data model for the Nnef Service Based South-Bound Interfaces for NIDD. It provides stage 3 protocol definitions and message flows, and specifies the API for each service offered by the NEF.
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].