Guido Casati f6d23422aa NGAP: enable Handover Cancel encoding
This commit adds support for the Handover Cancel initiating message
procedure code (NGAP_ProcedureCode_id_HandoverCancel).

Changes:
- ngap_gNB_decoder.c: Added case handler for Handover Cancel in
  ngap_gNB_decode_initiating_message() to properly decode and log
  incoming Handover Cancel messages from the AMF.

- ngap_gNB_encoder.c: Added Handover Cancel to the list of supported
  initiating message procedure codes in ngap_gNB_encode_initiating(),
  allowing the gNB to encode and send Handover Cancel messages.

The Handover Cancel procedure is already implemented in other parts of
the NGAP stack, these changes were missing to complete the support
by ensuring the procedure code is properly recognized in both the encoder
and decoder switch statements, following the same pattern as other
procedure codes.
2026-01-14 17:05:35 +01:00
2025-12-20 08:54:11 +01:00
2025-10-30 08:04:39 +01:00
2025-08-11 17:11:21 +02:00
2023-08-23 17:15:48 +02:00
2025-12-03 22:25:56 +01:00
2024-10-11 09:12:49 +02:00
2024-03-08 15:53:42 +01:00
2022-10-18 15:24:48 +02:00

OAI

License Supported OS Ubuntu 22 Supported OS Ubuntu 24 Supported OS RHEL9 Supported OS Fedora 41

GitLab Release (custom instance)

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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

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 .conf format only.
  • Logs of OAI gNB/DU/CU/CU-CP/CU-UP in .log or .txt format 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.

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