4.6.2.4 Protocol Stack between AF and AIoT Device for UE Reader

Legend:

• AIoT Data: It is the application data exchanged between the AIoT Device and the AF.
• AIoT NAS: The NAS protocol between AIoT Device and the AIOTF.
• AIoT AS: It is between the AIoT Device, and the UE as specified in TS 38.300 [5].
• NGAP: Application Layer Protocol between the AMF and the NG-RAN as defined in TS 38.413 [10].
• NGAP AIoT Information: It is the subset of NGAP information that the AMF transparently relays between the NG-RAN and the AIOTF, and is included in the NGAP messages and the AIOT3 messages.
• RRC: It is between the UE Reader and the NG-RAN as specified in TS 38.300 [5].

When UE Reader is used, the AIoT NAS messages between the AIoT Device and the AIOTF are transferred via UE reader, NG-RAN and AMF transparently.