A.55 Monitoring of NF service discovery

28.5523GPP5G performance measurementsManagement and orchestrationRelease 18TS

An NF service is one type of capability exposed by an NF (NF Service Producer) to other authorized NF (NF Service Consumer) through a service-based interface. A Network Function could expose one or more NF services.

The NF discovery and NF service discovery enable Core Network entities (NFs or Service Communication Proxy (SCP)) to discover a set of NF instance(s) and NF service instance(s) for a specific NF service or an NF type. Unless the expected NF and NF service information is locally configured on the requester NF, e.g. when the expected NF service or NF is in the same PLMN as the requester NF, the NF and NF service discovery is implemented via the Network Repository Function (NRF).

If the NF service instance(s) cannot be discovered by the NF consumer, the network feature may not be fully supported thus the uses may suffer from service failures. Therefore, the performance of the NF service discovery needs to be monitored.