Content for  TS 23.288  Word version:  18.4.0

With Network Performance Analytics, NWDAF provides either statistics or predictions on the gNB status information, gNB resource usage, communication performance and mobility performance in an Area of Interest; in addition, NWDAF it may provide statistics or predictions on the number of UEs located in that Area of Interest. The service consumer may be an NF (e.g. PCF, NEF, AF), or the OAM. The consumer of these analytics may indicate in the request:

• Analytics ID = "Network Performance";
• Target of Analytics Reporting: either a single UE (SUPI ), or a group of UEs (an Internal Group ID that refers to the group for which the analytics on the number of UEs that are located in the Area of Interest at the time indicated in the Analytics target period is requested) or any UE;
• Analytics Filter Information:
  • Area of Interest (list of TA or Cells) which restricts the area in focus (mandatory if Target of Analytics Reporting is set to "any UE", optional otherwise);
  • Optionally, Traffic type of interest (overall traffic, GBR traffic or Delay-critical GBR traffic);
  • Optionally, a list of analytics subsets that are requested among those specified in clause 6.6.3;
• Optionally, a preferred level of accuracy of the analytics;
• Optionally, preferred level of accuracy per analytics subset (see clause 6.6.3);
• Optionally, preferred order of results for the list of Network Performance information:
  • ordering criterion: "number of UEs", "communication performance" or "mobility performance";
  • order: ascending or descending;
• Optionally, Reporting Thresholds, which apply only for subscriptions and indicate conditions on the level to be reached for respective analytics information (see clause 6.6.3) in order to be notified by the NWDAF;
• An Analytics target period indicates the time period over which the statistics or prediction are requested; and
• Optionally, maximum number of objects.
• In a subscription, the Notification Correlation Id and the Notification Target Address are included.
• Optionally, Spatial granularity size (if an Area of Interest is provided) and Temporal granularity size.

The NWDAF notifies the result of the analytics to the consumer as indicated in clause 6.6.3.

The NWDAF collects Load and Performance information in an Area of Interest from the sources listed in Table 6.6.2-1 and number of UEs within Area of Interest from the sources listed in Table 6.6.2-2.

The NWDAF shall be able to collect UE mobility information as stated in clause 6.7.2.2.

The NWDAF shall be able to provide both statistics and predictions on Network Performance. Network performance statistics are defined in Table 6.6.3-1.

Network performance predictions are defined in Table 6.6.3-2.

The number of network performance information entries is limited by the maximum number of objects provided as part of Analytics Reporting Information. The NWDAF provides Network Performance Analytics to a consumer at the time requested by the consumer in the Analytics target period:

• Analytics ID set to "Network Performance".
• Notification Target Address including the address of the consumer.
• Notification Correlation ID, for the consumer to correlate notifications from NWDAF if subscription applies.
• Analytics specific parameters at the time indicated in the Analytics target period.