Understanding 5G Core Architecture

The 5G Core (5GC) is the heart of modern mobile networks. It introduces a Service-Based Architecture (SBA) that separates network functions into modular services.

AMF

The Access and Mobility Management Function (AMF) handles registration, authentication, and mobility management.

SMF

The Session Management Function (SMF) is responsible for PDU session establishment, modification, and release.

UPF

The User Plane Function (UPF) forwards user traffic and applies QoS and routing policies.