Content for  TS 23.288  Word version:  18.2.0

Clause 6.18 describes how NWDAF can provide E2E data volume transfer time analytics, in the form of statistics or predictions or both, to a service consumer. NWDAF collects E2E data volume transfer time related input data from 5GC NFs, OAM and AF. The consumer can either subscribe to analytics notifications (i.e. a Subscribe-Notify model) or request a single notification (i.e. a Request-Response model). The E2E data volume transfer time refers to a time delay for completing the transmission of a specific data volume from UE to AF, or from AF to UE. If a target number of repeating data transmissions or a target time interval between data transmissions is given, the E2E data volume transfer time can be provided as an average value of every data volume transfer time within the Analytics target period. The E2E data volume transfer time analytics may be used to assist an AF hosting AI/ML-based services, e.g. for member selection of federated learning. The E2E data volume transfer time analytics may be provided as defined in clause 6.18.3 for a UE individually or a list of UEs. More than one E2E data volume transfer time classes might be assigned by operator or AF for a group of UEs. The UEs might be classified to high-, medium-, and low-transfer time classes with respect to the threshold(s) of the corresponding class. The service consumer may be an NF (e.g. AF, or NEF). The consumer of these analytics may indicate in the request:

• Analytics ID = "E2E data volume transfer time ".
• Target of Analytics Reporting: a single UE (SUPI/GPSI) or a group of UEs (a list of SUPIs/GPSIs).
• Analytics Filter Information optionally including:
  • DNN;
  • S-NSSAI;
  • Application ID;
  • Area of Interest (AOI(s)): restricts the scope of the E2E data volume transfer time analytics to the provided area;
  • An optional list of analytics subsets that are requested (see clause 6.18.3);
  • Data Volume UL/DL: indicates a specific data volume transmitted once from UE to AF and/or from AF to UE;
  • QoS requirements (e.g. 5QI, QoS Characteristics);
  • Optionally, either a target number of repeating data transmissions or a target time interval between data transmissions within the Analytics target period;
  • Optionally, a request for geographical distribution (i.e. the AoIs) of the UEs.
• An Analytics target period indicates the time period over which the statistics or predictions are requested.
• In a subscription, the Notification Correlation Id and the Notification Target Address are included.
• Optionally, preferred level of accuracy of the analytics.
• Optional preferred order of results for the list of E2E data volume transfer time:
  • ordering criterion: "E2E data volume transfer time",
  • order: ascending or descending.
• Optionally, Reporting Thresholds, which indicate conditions on the level to be reached for respective analytics subsets (see clause 6.18.3)
• Optionally, maximum number of UEs.

The NWDAF supporting analytics on E2E data volume transfer time shall be able to collect E2E data volume transfer time information from AF, OAM and 5GC NFs. More detailed information collected by the NWDAF from the OAM is defined in the Table 6.18.2-1, from relevant 5GC NFs (i.e. UPF, SMF, AMF) is defined in Table 6.18.2-2, and from AF is defined in Table 6.18.2-3.

NWDAF subscribes the network data from OAM in the Table 6.18.2-1 by using the services provided by OAM as described in clause 6.2.3.

The NWDAF supporting E2E data volume transfer time analytics provides the analytics results to consumer NFs, e.g. AF, or NEF. The analytics results provided by the NWDAF could be E2E data volume transfer time statistics as defined in Table 6.18.3-1 or predictions as defined in Table 6.18.3-2.

The NWDAF can provide E2E data volume transfer time analytics to a 5GC NF (e.g. AF, or NEF).