A.5 Collaboration D

26.5313GPPData Collection and ReportingGeneral description and architectureRelease 17TS

In this collaboration scenario, the Data Collection AF itself is deployed outside the trusted domain and interactions with functions inside the trusted domain occur via the NEF. This scenario corresponds to the "Procedure for Data Collection from AF via NEF" defined in clause 6.2.2.3 of TS 23.288 [4]. Specifically:

– The externally deployed Data Collection AF registers with the NRF inside the trusted domain using the Nnef_NFManagement service via the NEF.

NOTE: In practice, the Data Collection AF is instantiated as a subfunction of a domain-specific Application Function. The enclosing Application Function should include data collection and reporting capabilities in its own registration with the NRF on behalf of the enclosed Data Collection AF rather than making a separate registration for the subfunction.

– The NWDAF inside the trusted domain uses the Nnef_EventExposure service (as specified in clause 5.2.6.2 of TS 23.502 [3]) to subscribe to and receive events exposed by the externally deployed Data Collection AF.

Figure A.5‑1: Collaboration D with Data Collection AF deployed outside the trusted domain

The functional entities of the Application Service Provider, as well as the Application Server (AS), interact with the externally deployed Data Collection AF using interfaces that are outside the scope of 3GPP specification. However, the interactions at reference points R1′, R3′, R4′ and R6′ are expected to be functionally equivalent to those at R1, R3, R4 and R6 respectively.