[srsran-users] Getting 5G SA to work with USRP

[Johannes Wegener]

Hello,

I'm trying to get a 5G SA network working using srsUE and srsENB (with 
open5gs as CN). It works using ZeroMQ as described here: 
https://docs.srsran.com/projects/4g/en/latest/app_notes/source/5g_sa_E2E/source/index.html

But this also just works using the provided band/frequency settings. 
Using something else than band 3 the UE won't connect to ENB.

I my lab setup with X310 USRPs the band 3 is not usable. I have a device 
config similar to what is described here: 
https://docs.srsran.com/projects/4g/en/latest/app_notes/source/5g_sa_amari/source/index.html

And trying other frequency settings in empty bands I'm seeing that the 
ENB is sending but the UE cannot connect. Since other bands than 3 also 
didn't work using ZeroMQ do I need to change anything else in the srsUE 
configuration than the band setting in the [rat.nr] section? Do I need 
to set the ARFCN somewhere? Or is the ZeroMQ not supposed to work in 
anything else than band 3?

Best regards,
Johannes