4.2.1 General

The 5GS System architecture for AIoT includes core network functions, different AIoT Reader architectures and AIoT Devices. The different AIoT Reader architectures allow for different deployment options. The following AIoT Reader architectures are defined:

• NG-RAN reader architecture, with an NG-RAN supporting AIoT Reader functionality. The architecture includes either a direct connectivity between NG-RAN and the AIOTF or an indirect connectivity between NG-RAN and the AIOTF via an AMF.
• UE Reader architecture, with a UE supporting AIoT Reader functionality. NG-RAN and the AIOTF is connected indirectly via AMF.

The NG-RAN in this specification refers to the gNB which supports AIoT related functionalities, as specified in TS 38.300 [5]. The gNB may only support communication with AIoT Devices.

The architecture for Network Exposure Function, using reference point representation, defined in clause 4.2.3 of TS 23.501 [3] is applicable for AIoT, with a southbound interface from the NEF to AIOTF.