Random Access Procedure in 5G-LENA

[Marcello Morini]

Hi all,
I am running the example cttc-3gpp-channel-example.cc to monitor the Random Access Procedure of the nodes connecting.
In particular, I am interested in studying the time required by an increasing number of UEs (from 1 to 100) to complete the Random Access.
To do so, I parse the log file, looking for "NrUeMac:DoNotifyConnectionSuccessful" or "LteUeRrc:DoNotifyRandomAccessSuccessful".
However, at the end of the analysis, all UEs turn out to connect at the same time instant, regardless of the number and the positions of UEs,
and without any collision, thus following what appears to be an ideal behavior.
I don't think this is a realistic outcome of the simulation.
Is there a way I can get a reliable result for my RA delay evaluation?

Any help would be really appreciated.
Thank you in advance,

MM

[Marcello Morini]

For those who might be interested,

After a deep investigation I understood that, as of the beginning of September 2022 (Release NR-v2.2), NR-LENA does not implement the detailed NR Random Access Procedure. All the devices that request access are simply attached to the network at the same instant, thus without following the complete procedure.

MM

[Biljana B.]

Hi Marcello,

I did not see your first email from August. Yes, you are right, there is only an idealistic, simplified RACH in the public NR. We worked on the real RACH, but it is uncertain when it will be ready to be published. As soon there is more info we will send an update to the 5G-LENA users' mailing list.

Kind regards,

Biljana