What is 5G service based architecture?

The introduction of control and user plane separation in the 4G EPC is the first step towards the 5G architecture. The SGW and PGW functions were split into a control and data plane component. As shown in the above figure, the 4G EPC components have been reorganized into service-oriented functions .20 Eki 2018

Oracle Communications NRF is a critical component required to implement the new service-based architecture (SBA) in the 5G core .

The 3GPP defines a Service-Based Architecture (SBA), whereby the control plane functionality and common data repositories of a 5G network are delivered by way of a set of interconnected Network Functions (NFs), each with authorization to access each other’s services .