| Glossary |
| ======== |
| |
| Protocols |
| --------- |
| - NGAP: NG Application Protocol used over N2 interface |
| - S1AP: S1 Application Protocol used over S1-AP interface |
| - Diameter: S6a |
| - NAS: Non-Access-Stratum used between UE & MME/AMF. |
| - PFCP: Packet Forwarding Control Protocol |
| - GTPv1 |
| - GTPv2 |
| |
| Network Functions |
| ----------------- |
| |
| - AMF: Access and Mobility Management Function |
| - UPF: User Plane Function |
| - SMF: Session Management Function |
| - NRF: Network Repository Function |
| - NSSF: Network Slice Selection Function |
| - PCF: Policy & Charging Function |
| - AUSF: Authentication Server Function |
| - UDM: Unified Data Management |
| - UDR: Unified Data Repository |
| - CHF: Charging Function |
| - NWDAF: Network Data Analytics Function |
| - NEF: Network Exposure Function |
| - MME: Mobility Management Entity |
| - SGW: Serving Gateway |
| - PGW: PDN Gateway |
| - HSS: Home Subscriber Server |
| - PCRF: Policy and Charging Rule Function |
| |
| 3gpp Interfaces |
| --------------- |
| - N2: gNodeB to AMF interface |
| - N4: SMF to UPF interface |
| - SBI interface |
| - S1AP: eNodeB to MME interface |
| |
| Misc |
| ---- |
| SA: Standalone Architecture |