0ceb5fd3d45c2496fffe92f5fbbbfe381a08c62d
Introduce UE NAS Simulator This MR introduces a simple standalone tester for 5G UE NAS signaling and NGAP messages. It connects to the AMF to perform NGAP and NAS encoding/decoding and validates the UE Registration and PDU Session Establishment processes without the overhead of a full Radio Access Network (PHY/MAC/RLC). The motivation for this tester is as follows, - This tester is a lightweight, deterministic tool to test the UE NAS layer directly. - Developers can easily inject specific NAS messages depending on the use-case. - Developers can validate custom NAS/NGAP messages without the need to implement complete RRC/MAC etc procedures. Start the 5G Core network to test the UE NAS simulator. The compiling and testing procedure is described below. To compile: mkdir build && cd build && cmake .. -GNinja && ninja nr-ue-nas-simulator-test To run: LD_LIBRARY_PATH=. ./tests/nr-ue-nas-simulator/nr-ue-nas-simulator-test -O ../tests/nr-ue-nas-simulator/test.conf
Merge remote-tracking branch 'origin/grafana-dist-channel_quality' into integration_2026_w13 (!3805)
Merge remote-tracking branch 'origin/fix-ssPBCH_BlockPower-config' into integration_2026_w12 (!3909)
OpenAirInterface 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
- General overview of documentation
- The implemented features
- System Requirements for Using OAI Stack
- How to build
- How to run the modems
Not all information is available in a central place, and information for specific sub-systems might be available in the corresponding sub-directories. To find all READMEs, this command might be handy:
find . -iname "readme*"
RAN repository structure
The OpenAirInterface (OAI) software is composed of the following parts:
openairinterface5g
├── charts
├── ci-scripts : Meta-scripts used by the OSA CI process. Contains also configuration files used day-to-day by CI.
├── CMakeLists.txt : Top-level CMakeLists.txt for building
├── cmake_targets : Build utilities to compile (simulation, emulation and real-time platforms), and generated build files.
├── common : Some common OAI utilities, some other tools can be found at openair2/UTILS.
├── doc : Documentation
├── docker : Dockerfiles to build for Ubuntu and RHEL
├── executables : Top-level executable source files (gNB, eNB, ...)
├── maketags : Script to generate emacs tags.
├── nfapi : (n)FAPI code for MAC-PHY interface
├── openair1 : Layer 1 (3GPP LTE Rel-10/12 PHY, NR Rel-15 PHY)
├── openair2 : Layer 2 (3GPP LTE Rel-10 MAC/RLC/PDCP/RRC/X2AP, LTE Rel-14 M2AP, NR Rel-15+ MAC/RLC/PDCP/SDAP/RRC/X2AP/F1AP/E1AP), E2AP
├── openair3 : Layer 3 (3GPP LTE Rel-10 S1AP/GTP, NR Rel-15 NGAP/GTP)
├── openshift : OpenShift helm charts for some deployment options of OAI
├── radio : Drivers for various radios such as USRP, AW2S, RFsim, 7.2 FHI, ...
├── targets : Some configuration files; only historical relevance, and might be deleted in the future
└── tools : Tools for use by the developers/ci machines: code analysis and formatting
How to get support from the OAI Community
You can ask your question on the mailing lists.
Your email should contain below information:
- A clear subject in your email.
- For all the queries there should be [Query] in the subject of the email and for problems there should be [Problem].
- In case of a problem, add a small description.
- Do not share any photos unless you want to share a diagram.
- OAI gNB/DU/CU/CU-CP/CU-UP configuration file in
.confformat only. - Logs of OAI gNB/DU/CU/CU-CP/CU-UP in
.logor.txtformat only. - In case your question is related to performance, include a small description of the machine (Operating System, Kernel version, CPU, RAM and networking card) and diagram of your testing environment.
- Known/open issues are present on GitLab, so keep checking.
Always remember a structured email will help us understand your issues quickly.
Languages
C
91.8%
CMake
2.9%
C++
1.9%
TeX
1%
Python
1%
Other
1.1%
