AMF Proxy / NGAP-Flex
AMF Proxy load-balances NGAP signalling from gNBs across an AMF set, implementing the 5G equivalent of MME pooling (NGAP-Flex / AMF Set operation) so 5G core capacity scales horizontally and independently of the RAN.
Key features
- NGAP load balancing across AMF Sets and AMF Regions
- GUAMI-aware routing consistent with 3GPP AMF selection rules
- RAN paging and N2 handover signalling relay
- Weighted AMF Load Balancing per TS 23.501 §5.21.1
- Zero-downtime AMF scale-out and scale-in
- Telemetry export to NMS-UI for real-time signalling KPIs
Governing 3GPP & O-RAN specifications
These are the primary specifications this product implements or interoperates against. NgRAN tracks each release train and updates products as specifications evolve.
| Specification | Title / scope |
|---|---|
| 3GPP TS 23.501 | System architecture for the 5G System (5GS) — AMF Set, Region, Pointer |
| 3GPP TS 38.413 | NG Application Protocol (NGAP) |
| 3GPP TS 29.518 | Namf services (Access and Mobility Management) |
| 3GPP TS 23.502 | Procedures for the 5G System — registration & mobility |
Specification titles are summarised for reference. Full texts are maintained by 3GPP (3gpp.org) and the O-RAN ALLIANCE and are not reproduced here.
Architecture & interfaces
AMF Proxy terminates N2 from the gNB and forwards NGAP messages to the correct AMF in an AMF Set based on the 5G-GUTI / GUAMI, following the same set/region/pointer addressing 3GPP defines for AMF selection. It supports both service-based and reference-point deployments and can front a mixed pool of AMF vendors during migration.
Reference interfaces
Deployment model
Cloud-native CNF (Kubernetes, Helm chart included) with optional VM packaging.