OpenAirInterface is under GNU GPLv3 license. The full GNU General Public License is included in this distribution in the file called "COPYING".



The OpenAirInterface (OAI) software is composed of six different parts: 



openair1: 3GPP LTE Rel-8 PHY layer + PHY RF simulation



openair2: 3GPP LTE Rel-9 RLC/MAC/PDCP/RRC implementations, eNB application, X2AP



openair3: additional networking protocols (PMIP, MIH, Multicasting) and scripts 



openair-cn: 3GPP LTE Rel9 and 10 MME/NAS, S+P-GW, HSS, S1AP (ENB and MME).



openairITS: IEEE 802.11p software modem (all layers)



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





targets: scripts to compile and lauch different system targets (simulation, emulation and real-time platforms, user-space tools for these platforms (tbd)) 



see README files in these subdirectories for more information



see also https://twiki.eurecom.fr/twiki/bin/view/OpenAirInterface/WebHome