Thomas Schlichter
b9e99f1e64
Tests with our USRP X300, connected via PCIe, show that tx_sample_advance of 45 is slightly too much. Unfortunately, transmitting the PRACH preamble too early is very bad, slightly too late is no problem. So change this value from 45 to 40. This helps receiving the PRACH preamble reliably.
OpenAirInterface License
OpenAirInterface is under OpenAirInterface Software Alliance license.
It is distributed under OAI Public License V1.1.
The license information is distributed under LICENSE file in the same directory.
Please see NOTICE file for third party software that is included in the sources.
Where to Start
RAN repository structure
The OpenAirInterface (OAI) software is composed of the following parts:
openairinterface5g ├── ci-scripts : Meta-scripts used by the OSA CI process. Contains also configuration files used day-to-day by CI. ├── 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. ├── doc : Contains an up-to-date feature set list and starting tutorials. ├── executables : Top-level executable source files. ├── LICENSE : License file. ├── maketags : Script to generate emacs tags. ├── nfapi : Contains the NFAPI code. A local Readme file provides more details. ├── openair1 : 3GPP LTE Rel-10/12 PHY layer / 3GPP NR Rel-15 layer. A local Readme file provides more details. │ ├── PHY │ ├── SCHED │ ├── SCHED_NBIOT │ ├── SCHED_NR │ ├── SCHED_NR_UE │ ├── SCHED_UE │ └── SIMULATION : PHY RF simulation. ├── openair2 : 3GPP LTE Rel-10 RLC/MAC/PDCP/RRC/X2AP + LTE Rel-14 M2AP implementation. Also 3GPP NR Rel-15 RLC/MAC/PDCP/RRC/X2AP. │ ├── COMMON │ ├── DOCS │ ├── ENB_APP │ ├── F1AP │ ├── GNB_APP │ ├── 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 │ ├── M2AP │ ├── MCE_APP │ ├── NETWORK_DRIVER │ ├── NR_PHY_INTERFACE │ ├── NR_UE_PHY_INTERFACE │ ├── PHY_INTERFACE │ ├── RRC │ ├── UTIL │ └── X2AP ├── openair3 : 3GPP LTE Rel10 for S1AP, NAS GTPV1-U for both ENB and UE. │ ├── COMMON │ ├── DOCS │ ├── GTPV1-U │ ├── M3AP │ ├── MME_APP │ ├── NAS │ ├── S1AP │ ├── SCTP │ ├── SECU │ ├── TEST │ ├── UDP │ └── UTILS └── targets : Top-level wrappers for unitary simulation for PHY channels, system-level emulation (eNB-UE with and without S1), and realtime eNB and UE and RRH GW.