Study on UPF enhancement for Exposure And SBA
The Technical Report studies on key issue description, solution and conclusion on the support of better integration of UPF into the 5GC SBA. The objectives include:
- Study UPF event exposure service(s) registration/deregistration, and discovery via the NRF.
- Study UPF event exposure service(s) that would support, e.g.:
- Consumption of UPF exposure services by the PCF, NWDAF, CHF, NEF, Trusted AF and other NFs (if needed).
- (To support the UPF exposure service, if needed) Use of SMF services, PCF services, NWDAF services, CHF services, NEF services, Trusted AF services by the UPF.
NOTE 1: This will not define solutions where UPF exposes information that it is not originator of, i.e. not re-expose information owned and exposed by other NFs.
- Relevant Event IDs.
- Evaluate usage of UPF event exposure service(s) as defined in WT#2 also considering the architectural impacts.
NOTE 2: SMF is responsible for controlling UPF packet processing.
NOTE 3: The performance of UP traffic handling shall not be degraded due to mechanisms defined in this study.
NOTE 4: The study shall address generic UPF data exposure mechanisms via SBA based mechanisms, and the coordination with other SIDs for this aspect may be needed in study phase.
This study shall maintain the Rel‑17 backward compatibility on the N3, N6, N9, N4 interfaces.