The NWDAF provides analytics to 5GC NFs, and OAM as defined in clause 7
Analytics information are either statistical information of the past events, or predictive information.
Different NWDAF instances may be present in the 5GC, with possible specializations per type of analytics. The capabilities of a NWDAF instance are described in the NWDAF profile stored in the NRF.
In order to support NFs that are consumers of analytics with the discovery of a NWDAF instance that is able to provide some specific type of analytics, each NWDAF instance should provide the list of Analytics ID(s) that it supports when registering to the NRF, in addition to other NRF registration elements of the NF profile. Other NFs requiring the discovery of an NWDAF instance that provides support for some specific type of analytics may query the NRF and include the Analytics ID(s) that identifies the desired type of analytics for that purpose.
The consumers i.e. 5GC NFs and OAM decide how to use the data analytics provided by NWDAF.
The interactions between 5GC NF(s) and the NWDAF take place within a PLMN.
The NWDAF has no knowledge about NF application logic. The NWDAF may use subscription data but only for statistical purpose.
The NWDAF service consumer selects an NWDAF that supports requested analytics information by using the NWDAF discovery principles defined in clause 6.3.13 of TS 23.501