📶 Telecom · Network
5G Core Network Topology
A simplified 5G standalone network: phones and radio sites, the 5G core network functions, and the connection out to the internet.
Drawing diagram…
What this diagram shows
- Radio sites (gNodeB) connect to the core over the transport network
- Control-plane functions (AMF, SMF, AUSF, UDM) handle login and sessions
- User traffic goes through the UPF to the internet
Prompt used
Network topology of a 5G standalone network: user devices connect to gNodeB radio sites, which connect over the transport network to the 5G core. The control plane has AMF (access and mobility), SMF (sessions), AUSF (authentication), UDM (subscriber data) and PCF (policy). User data flows from the gNodeB through the UPF (user plane function) to the internet and to an IMS core for voice.
Mermaid code
flowchart LR
UE1[Phone] --- G1[gNodeB Site 1]
UE2[IoT Device] --- G2[gNodeB Site 2]
G1 --- T[Transport Network]
G2 --- T
subgraph Core[5G Core]
AMF[AMF - Access and Mobility]
SMF[SMF - Session Management]
AUSF[AUSF - Authentication]
UDM[(UDM - Subscriber Data)]
PCF[PCF - Policy]
UPF[UPF - User Plane]
end
T --- AMF
T --- UPF
AMF --- AUSF
AUSF --- UDM
AMF --- SMF
SMF --- PCF
SMF --- UPF
UPF --- NET((Internet))
UPF --- IMS[IMS Core - Voice]Related templates
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