Re: [Openbts-discuss] Device doesn't see network at all (openbts-uhd + usrp2 + wbx)

[Љубомир С. <lj...@gm...>]

Hi,

I don't have any sim that has no local roaming contract, but I tried the
opposite: to act as a network from a neighbour country (and all local
operators do have roaming contracts with that network). So at least I
expected the OpenBTS to be listed. Also, I tried with different sims of all
three local operators (and all possible sim+device combinations :) ). And of
course, manual search (expecting to see the network).

This is config:
http://pastebin.com/knwDVC9a

And logs after start look like:

(test.TRX.out)
1307701026.9116 FORCE 3051153104 Logger.cpp:120:gSetLogFile: new log path
test.TRX.out
1307701031.9203 WARN 3042220912 Transceiver.cpp:594:driveControl: bogus
command SETMAXDLY on control interface.

(test.out)
1307701026.8982 FORCE 3075475152 Logger.cpp:120:gSetLogFile: new log path
test.out
1307701026.8983 ALARM 3075475152 ControlCommon.cpp:573:load: TMSITable
cannot open TMSITable.txt for reading
1307701026.8984 ALARM 3075475152 OpenBTS.cpp:129:main: OpenBTS starting, ver
2.6PUBLIC build date Jun  9 2011
1307701031.9205 ALARM 3075475152 TRXManager.cpp:447:setMaxDelay: SETMAXDLY
failed with status -1
1307701032.0751 NOTICE 3075475152 GSMConfig.cpp:317:createCombinationVII:
Configuring combination VII on C0T1
1307701032.3288 NOTICE 3075475152 GSMConfig.cpp:301:createCombinationI:
Configuring combination I on C0T2
1307701032.3294 NOTICE 3075475152 GSMConfig.cpp:301:createCombinationI:
Configuring combination I on C0T3
1307701032.3303 NOTICE 3075475152 GSMConfig.cpp:301:createCombinationI:
Configuring combination I on C0T4
1307701032.3309 NOTICE 3075475152 GSMConfig.cpp:301:createCombinationI:
Configuring combination I on C0T5
1307701032.3330 NOTICE 3075475152 GSMConfig.cpp:301:createCombinationI:
Configuring combination I on C0T6
1307701032.3343 NOTICE 3075475152 GSMConfig.cpp:301:createCombinationI:
Configuring combination I on C0T7

After playing with power parameter I've got for the power:
current downlink power -7 dB wrt full scale
current attenuation bounds 7 to 7 dB

Cheers,
Ljubomir

2011/6/9 Thomas Tsou <tt...@vt...>

> 2011/6/9 Љубомир Самарџић <lj...@gm...>:
> > Hi everybody,
> >
> > As title says, I'm dealing with that problem ... :)
> >
> > I'm running openbts-uhd (currently head revision from git - commit:
> > d186353546d29032759f17872224187b736439dc).
> > The version of uhd driver is also currently fresh (commit
> > e625e890f5f341e4e93bec46a5279a96523a7b24), (libuhd.so.003.001 with
> > appropriate images on usrp2 as well)
> >
> > The problem is that the OpenBTS network is not visible at all, on any
> tested
> > device (several Nokia phones and one HTC). Tried gsm900 and gsm1800
> bands,
> > several arfcns...
>
> One of the more recent changes is the enabling of automatic transmit
> gain, which formerly only existed on the 52MHz transceiver. The config
> values GSM.PowerManager.MaxAttenDB and GSM.PowerManager.MinAttenDB
> control the minimum and maximum transmit power respectively. The
> default configuration starts at 30dB attenuation, which only provides
> minimal range, but the transmit power will ramp up as time progresses.
>
> You can view the current transmit power (attenuation) by typing
> 'power' at the OpenBTS prompt.
>
> Have you tried manual network search and selection on your phone? Have
> you read the phone camping page on the wiki?
>
> http://gnuradio.org/redmine/wiki/gnuradio/OpenBTSMS_Camping
>
> > Also, I skipped asterisk instalation completely at this point. My
> thoughts
> > were that network should be visible no matter what happens with Asterisk.
>
> You are correct. If your phone cannot detect the network, than you can
> ignore Asterisk installation at this point.
>
>  Thomas
>