Network Data Analytics Function Functional Description.

NWDAF represents operator managed network analytics logical function. NWDAF provides slice specific network data analytics to a NF.

NWDAF provides network analytics information to a NF on a network slice instance level and the NWDAF is not required to be aware of the current subscribers using the slice.

NWDAF notifies slice specific network status analytic information to the NFs that are subscribed to it.

NF may collect directly slice specific network status analytic information from NWDAF.

In this Release of the specification, both PCF and NSSF are consumers of network analytics. The PCF may use that data in its policy decisions. NSSF may use the load level information provided by NWDAF for slice selection.