21 Mar
2024
21 Mar
'24
6:36 p.m.
On 21.03.2024 17:04, hellowangfang(a)gmail.com wrote:
I used osmocom-bb and grgsm with usrp b210 to connect
openBTS, but failed. The command is "./mobile -c
/home/oi/wf/osmocom-bb/doc/examples/mobile/default.cfg","./trxcon -p 5075 "
,"grgsm_trx -p 5075" .
When i used “./cell_log -A 1 ”， it could find plmn 1-1 with arfcn 1 which is same with
openBTS.
FYI, grgsm_trx does not implement any kind of power measurement. The
reported RSSI values are just random values between -120 and -100.
Because of that, cell_log may or may not detect cells.
But when test with sim testcard 1, it failed to find
the 1-1 cell. Could anyone give any suggestion about this? Thanks a lot!
It's a good question why cell_log does find your cell, but mobile does
not. As a workaround, I would recommend using the 'stick' parameter in
mobile.cfg. Just add it like this:
ms 1
stick 1
...
This will force the mobile app to use ARFCN 1 and nothing else. This is
exactly what I am doing when running a virtual setup, for instance.
--
Best regards,
Vadim.