Content for  TS 23.288  Word version:  18.6.0

This clause specifies the procedure on how NWDAF can provide NWDAF-assisted PFD Determination analytics, in the form of statistics. To assist determination of PFDs for known application identifiers, if the related Service Level Agreement does not preclude this, an NWDAF may perform data analytics on existing PFD information and user plane traffic and provide analytics results in the form of new or updated PFD determination statistics, e.g. new or updated IP 3-tuple list, to an analytics consumer in the 5GC. The NEF(PFDF) as the consumer uses the suggested PFD information of the PFD determination statistics provided by the NWDAF as defined in clause 4.18.2.2 of TS 23.502 and in TS 23.503. The service consumer is a NEF(PFDF). The consumer of these analytics shall indicate in the subscription:

• Analytics ID = " PFD Determination";
• Target of Analytics Reporting: "any UE";
• Application identifier;
• Analytics Filter Information optionally containing:
  • S-NSSAI(s);
  • DNN(s);
• An Analytics target period indicates the time period over which the statistics are requested;
• Analytics Reporting Parameters indicating either periodic reporting (together with the parameter periodicity) or reporting when threshold is reached (together with the parameter Reporting type (as defined in clause 4.15.1 of TS 23.502) to indicate that the report shall only occur when the information differs from the previous report);
• Optionally, the preferred level of accuracy on the PFD determination statistics;
• Optionally, maximum number of objects. This refers to the analytic output (i.e. maximum number of new or updated suggested PFD information in the PFD determination statistics);
• In a subscription, the Notification Correlation Id and the Notification Target Address are included.

The NWDAF collects information on user data traffic from the UPF for a known Application ID optionally together with a combination of certain S-NSSAI(s) and/or DNN(s) and retrieves the existing PFDs from the NEF(PFDF). The detailed input data are described in Table 6.16.2-1.

The output analytics of PFD Determination is defined in Table 6.16.3-1. The output analysis may be used to provision new or updated PFDs information for known applications. The NWDAF may assign a confidence to the PFD Determination statistics based on the analytics of input data provided by UPF and NEF(PFDF).

The procedure depicted in Figure 6.16.4-1 shows the procedure that the NWDAF can provide PFD Detection analytics to a NEF (PFDF).