5G-LENA v3.1 (compatible with ns-3.42)

Hi all,

We are pleased to announce that 5G-LENA v3.1 is now available for download. This release is compatible with the latest ns-3.42, so the code base is updated for C++ conformance and aligned with ns-3.42.

This release comes with two new features: 1) a completely new PMI Type-I Single Panel codebook for MIMO, supporting up to 32 antenna ports and 4 streams (rank 4) per user, and 2) the support of sub-band downsampling/upsampling techniques, which follow NR specifications for sub-band PMI reporting and allow speeding up MIMO simulations. The example cttc-nr-mimo-demo.cc shows how to configure the new codebook. In addition, this release includes new performance optimizations for faster simulations and many bugs fixes. You can see the full list of bugs fixed in the RELEASE_NOTES.md file. One of the most important bug fixes is related to NR-U simulations; we have corrected the way the interference events are counted in the NrInterference. Thanks a lot to George Frangulea for reporting such an issue!

In addition to all these, we introduced two new CI jobs. The first to improve uniformization of commit messages. The second catches memory related bugs, allowing us or contributors to fix them before finding them on the wild, crashing simulations or generating bogus results.

Remember to follow the instructions from the README.md file, i.e., to checkout the correct release branch of both ns-3 and the NR module. The information about compatibility with the corresponding ns-3 release branch is stated in the README.md file. You can read a detailed description in the CHANGES.md and the RELEASE_NOTES.md files.

We would like to thank all 5G-LENA users who contribute continuously to the 5G-LENA community by opening issues, proposing solutions, and answering on 5G-LENA users list. Thank you for your support!

To cite this NR 3.1 5G-LENA release please use: https://zenodo.org/records/12773723 (in addition to the reference papers listed in https://5g-lena.cttc.es/papers/)

The 5G-LENA team