The NF sends Nnwdaf_AnalyticsSubscription_Subscribe or Nnwdaf_AnalyticsInfo_Request (Analytics ID="Network Performance", Target of Analytics Reporting, Analytics Filter="Area of Interest", "Reporting Thresholds" and Analytics target Period(s)) to the NWDAF.
The NWDAF discovers from NRF the AMF(s) belonging to the AMF Region(s) that include(s) the Area of Interest and subscribes to NF load and status information from NRF about these AMF(s).
The NWDAF subscribes to OAM services to get the status and load information and the resource usage on the Area of Interest in clause 6.6.2
, following the procedure captured in Clause 188.8.131.52
The NWDAF collects the number of UEs located in the Area of Interest from AMF using Namf_EventExposure_Subscribe service, including the Target of Event Reporting provided as an input parameter (i.e. any UE or Internal Group Identifier).
The NWDAF derives the requested analytics.
The NWDAF sends Nnwdaf_AnalyticsSubscription_Notify or Nnwdaf_AnalyticsInfo_Request response (Network Performance analytics, Subscription Correlation Id, Probability of assertion).
A change of network performance information, i.e. change in the gNB status information, gNB resource usage, communication performance and mobility performance in the area of interest at the observed period, is detected by OAM, or a change in the NF load information is reported by NRF, and is notified to NWDAF.
The NWDAF derives new analytics taking into account the most recent data collected.
When relevant according to the Analytics target period and Reporting Thresholds, the NWDAF provides a notification using Nnwdaf_AnalyticsSubscription_Notify (Network Performance analyticsSubscription Correlation Id, Probability of assertion).