NGAP

Technical Explanation

NGAP governs all control plane interactions across the N2 interface. It establishes, modifies, and releases PDU session resources in the RAN, coordinates inter-gNodeB N2 handovers, transfers mobility restriction lists, conveys Paging messages, and routes NAS control PDUs transparently.

Key Functions

• Standardizes signaling across the N2 interface between gNodeB and AMF
• Coordinates PDU Session Resource Setup, Modify, and Release
• Controls N2 Handover, Paging, and Initial Context Setup