Robert Schmidt
9c0eaefb93
Disable EPS NAS security algorithms in 5GMM UE capabilities OAI nrUE is not supporting multiple RATs, therefore the EPS NAS security algorithms bit in 5GMM UE capabilities is not relevant. This bit is only relevant if N26 interface is supported by the AMF and the UE is supporting S1 mode, meaning that the UE is connected to a 4G LTE network, via the S1 interface (eNB - MME/SGW). When the UE performs an inter-system change from N1 mode to S1 mode, it transitions from 5GC to the EPC: at network level this happens over the N26 interface (which connects the 5G AMF to the 4G MME). In this transition is where the EPS security context becomes relevant: the UE does not know about the N26 interface, however is the AMF that can tell the UE, e.g. during the registration procedure, if the UE sets the S1 mode bit to "S1 mode supported" in the 5GMM capability IE, and the AMF supports the N26 interface, the AMF will include the Selected EPS NAS security algorithms IE in the SECURITY MODE COMMAND message, which is what happened in #915. Closes: #915
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
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- OAI gNB/DU/CU/CU-CP/CU-UP configuration file in
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- Known/open issues are present on GitLab, so keep checking.
Always remember a structured email will help us understand your issues quickly.