5G • Core Network
TNGF
Trusted Non-3GPP Gateway Function
Gateway function connecting operator-managed trusted Wi-Fi networks directly to the 5G Core.
Technical Explanation
Introduced in 3GPP Rel-16, the TNGF allows trusted non-3GPP access (such as carrier-grade enterprise Wi-Fi) to connect to 5GC without requiring heavy IPsec tunneling. It relies on EAP-5G over 802.11 for direct authentication, lowering device computational load while preserving 5GC security.
Key Functions
- Connects trusted carrier Wi-Fi directly to 5GC without full IPsec
- Supports direct EAP-5G authentication over 802.11 radio links
- Exposes standard N2 and N3 interfaces to AMF and UPF
Specifications
3GPP TS 23.501, TS 23.502
Interfaces
N2N3Ta
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