OpenAirInterface is under OpenAirInterface Software Alliance license.

├── http://www.openairinterface.org/?page_id=101

├── http://www.openairinterface.org/?page_id=698



The OpenAirInterface (OAI) software is composed of the following parts: 



openairinterface5g

├── cmake_targets: build utilities to compile (simulation, emulation and real-time platforms), and generated build files

├── common : some common OAI utilities, other tools can be found at openair2/UTILS

├── COPYING

├── maketags : script to generate emacs tags

├── openair1 : 3GPP LTE Rel-10 PHY layer + PHY RF simulation and a subset of Rel 12 Features.

├── openair2 :3GPP LTE Rel-10 RLC/MAC/PDCP/RRC/X2AP implementation. 

    ├── LAYER2/RLC/ with the following subdirectories: UM_v9.3.0, TM_v9.3.0, and AM_v9.3.0. 

    ├── LAYER2/PDCP/PDCP_v10.1.0. 

    ├── RRC/LITE

    ├── PHY_INTERFACE

    ├── X2AP

    ├── ENB_APP 

├── openair3: 3GPP LTE Rel10 for S1AP, NAS GTPV1-U for both ENB and UE.

    ├── GTPV1-U

    ├── NAS 

    ├── S1AP

    ├── SCTP

    ├── SECU

    ├── UDP

└── targets: top level wrapper for unitary simulation for PHY channels, system-level emulation (eNB-UE with and without S1), and realtime eNB and UE and RRH GW.