Jaroslava Fiedlerova
0c4882940c
Avoid measGap configuration on handover in intra-freq scenarios During the handover, we are incorrectly configuring the measGap, even though neighboring cells are on the same frequency. Since gNB is not expecting this measGap, the SRS scheduling is performed. Therefore, we are periodically receiving these logs after the handover: [NR_MAC] Invalid timing advance offset for RNTI 58e2 [NR_MAC] Invalid timing advance offset for RNTI 58e2 [NR_MAC] Invalid timing advance offset for RNTI 58e2 [NR_MAC] Invalid timing advance offset for RNTI 58e2 [NR_MAC] Invalid timing advance offset for RNTI 58e2 [NR_MAC] Invalid timing advance offset for RNTI 58e2 These logs occur at a time when UE is performing a MeasGap operation and not sending the SRS, while gNB thinks it will receive the SRS, but will not receive any SRS. This MR resolves this issue, and after the handover, these logs no longer appear.
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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