5G-LENA v4.1 release (compatible with ns-3.45)

[Gabriel Ferreira]

Hi all,

We are happy to announce the v4.1 release of 5G-LENA.
This release is compatible with ns-3.45.

This release includes some features, such as:
- Resource assignment matrix (currently used to ensure there are no overlapping allocated resources):
- Wraparound model and support for hexagonal deployments, which allows for higher interference without requiring the simulation of additional rings, which can drastically speed up simulations;
- FastFadingConstantPositionMobilityModel, a static mobility model with non-zero velocity to exercise channel fading code;
- Indoor and Outdoor calibration examples were updated to reflect RP-180524;

- Add new random TDMA and OFDMA schedulers, to maximize the chance of interference between network nodes (used for testing);

- Add CI jobs to test nr on MacOS, and to perform periodic regression testing with outdoor calibration;

This release includes important fixes, such as:
- Schedulers now have memory, maintaining their fairness over time;
- Downlink HARQ is now transmitted in scenarios where there are more active transmissions than symbols.

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 4.1 5G-LENA release please use: https://zenodo.org/records/15830121 (in addition to the reference papers listed in https://5g-lena.cttc.es/papers/)

The 5G-LENA team