Hi Vadim: Thanks a lot for you reply. It locked now. Another simple question is how to start the phone in vty. When i entered : OsmocomBB(mobile)> en OsmocomBB(mobile)# sim testcard 1 SIM already attached, remove first! it seems not triggered plmn search.what is the command to start the phone? Thank again!
Vadim Yanitskiy axilirator@gmail.com 于2024年3月22日周五 01:36写道：
On 21.03.2024 17:04, hellowangfang@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.