Hello everyone,
For a research project, I would like to setup a standalone 5G network and perform benchmarks.
The setup consists of two machines"
- Ubuntu System with GNB (USRPB210)
- Ubuntu System connected to 4x Quectel RM520N-GL modems
The Quectel modems successfully register at the GNB. And they are all shown in Ubuntu under the Mobile Settings.
However, so far, it seems I can only have one modem/SIM active at the same time.
I would like to have all 4 Quectel modems active and send data (via iperf3 speedtest) to the GNB in parallel.
I am using NetworkManager to ensure the Quectel modem connect automatically.
I do this like so:
- I create a new connection:
sudo nmcli c add con-name "srs" type gsm ifname "*" apn "srsapn"
- I enable auto connect on boot:
sudo nmcli c mod "srs" connection.autoconnect yes
- I start the connection:
sudo nmcli c up "srs"
The following image illustrates the setup I would like to achieve, and also highlights the problem how in the Mobile Network settings I only have a dropdown where I can only select one modem:
I would like some guidance how I can have both modems not only registered but connected at the same time so I can do performance tests in parallel.