This annex documents a set of collaboration scenarios that illustrate potential deployments of the data collection and reporting architecture as defined in the present document. In deployment, it is possible that some UE data is provided to the Data Collection AF using the direct data reporting method at reference point R2, while other (application-private) UE data is collected via reference R8 and provided to the Data Collection AF via the indirect data reporting method at reference point R3 (R3' in Collaboration D). In certain domains, UE data is collected in the first instance by an AS and therefore needs to be provided to the Data Collection AF at reference point R4 (R4' in Collaboration D). Hence, all three data reporting reference points are potentially in scope for all of the documented collaboration scenarios.

In this collaboration scenario all of the functions are deployed inside the trusted domain. This corresponds to the case where the functional entities of the Application Service Provider as well as the Application Server (AS) are internal to the 5G System.

In this collaboration scenario the functional entities of the Application Service Provider are deployed outside the trusted domain. Interactions between these functions and the Data Collection AF must therefore be mediated by the NEF.

This collaboration scenario illustrates the case where the Application Server (AS) is also deployed outside the trusted domain (in addition to the functional entities of the Application Service Provider per Collaboration B). In this case, the AS must therefore additionally interact with the Data Collection AF via the NEF.

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. Specifically:

• The externally deployed Data Collection AF registers with the NRF inside the trusted domain using the Nnef_NFManagement service via the NEF.
• The NWDAF inside the trusted domain uses the Nnef_EventExposure service (as specified in clause 5.2.6.2 of TS 23.502) to subscribe to and receive events exposed by the externally deployed Data Collection AF.

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.

In this collaboration scenario, the Data Collection Client is deployed as a subfunction of the UE Application. As a consequence of this arrangement, reference point R7 is subsumed into the UE Application. This collaboration may be combined with any of the preceding collaboration scenarios. Hence, only reference points R2 and R8 are depicted in the Figure in the interests of brevity.

The Direct Data Collection Client could, for example, be realised as a software library that implements the appropriate protocol at reference point R2. In such a realisation, the procedures defined in the present document at reference point R7 would likely form the API of the Data Collection Client library.