3GPP Glossary
Comprehensive reference of mobile network terms, components, and technologies
54 terms
Interface (7)
F1 Application Protocol
The signaling protocol over the F1 interface between a gNodeB-CU and gNodeB-DU in a disaggregated RAN deployment.
N2 Interface
The 5GC reference point between the NG-RAN and the AMF, carrying NGAP signaling.
N3 Interface
The 5GC reference point carrying user-plane GTP-U traffic between the NG-RAN and the UPF.
NG Application Protocol
The signaling protocol over the N2 interface between the gNodeB and the AMF, carrying UE context and PDU session management.
S1 Application Protocol
The signaling protocol over the S1-MME interface between eNodeB and MME, carrying context setup, handover, and paging procedures.
X2 Application Protocol
The signaling protocol over the X2 interface between neighboring eNodeBs, used for handover preparation and interference coordination.
Xn Application Protocol
The signaling protocol over the Xn interface between NG-RAN nodes, supporting dual connectivity and mobility.

