Study on enablers for network automation for the 5G System (5GS); Phase 2
The purpose of this Technical Report is to study enhancements for analytics and NWDAF for the following objectives:
- Remaining key issues from Release 16: UE driven analytics; How to ensure that slice SLA is guaranteed; Which data from UPF can be used by NWDAF (e.g. applications, other user data characteristics);
- NWDAF architecture enhancements: Multiple NWDAF Instances in one PLMN including hierarchies, roles and inter-NWDAF instance cooperation;
- NWDAF features enhancement: Enabling real-time or near real-time NWDAF communication, including mechanism for data collection; Service MOS based NWDAF-Assisted UP Optimization; Minimization of the load generated by NWDAF data collection;
- New Use Cases/key issues: Interaction between NWDAF and ML Model & Training Service owned by the operator.