3GPP Analyzer

F1AP

F1 Application Protocol

InterfaceIntroduced Rel-15

Definition

The signaling protocol over the F1 interface between a gNodeB-CU and gNodeB-DU in a disaggregated RAN deployment.

Evolution Across Releases

  • Introduced in Rel-15 to enable the CU/DU functional split standardized for NG-RAN.

Related Specifications