Re: [Discuss-gnuradio] GSM not detecting station, USRP1, FA-SY1, WBX, DBS

[Thomas Tsou]

On Tue, Jun 7, 2011 at 3:28 AM, Paul Lambert <address@hidden> wrote:
> Hello list,
>
> I'm having a lot of trouble here while trying to make openBTS work with my 
> USRP1
> to play with GSMs.

This question belongs on the OpenBTS list.

> First of all, a little description of my setup:
> Software:
> openbts-2.6.0Mamou
> gnuradio v3.4.0git-130-g207a2ae7
> UHD from git
> OS: ubuntu 11.04
>
> # sudo lsusrp
> USRP 0 serial number 4c76a203
>  RX d'board A: WBX NG RX
>  RX d'board B: DBS Rx
>  TX d'board A: WBX NG TX
>  TX d'board B: <none>

The combination of version 2.6.0-Mamou and WBX isn't supported.
Official releases and the mainline tree only support operation with
dual RFX900/1800 d'boards. Understandably, this can be easily missed
when browsing the wiki page. The FAQ, however, makes this clear and
provides a solution for the WBX.

http://gnuradio.org/redmine/wiki/gnuradio/OpenBTSFAQ

> /usr/local/share/gnuradio/examples/usrp/usrp_benchmark_usb.py
> Max USB/USRP throughput = 32MB/sec
>
> I'm using a FA-SY clock to get 52Mhz and I followed the guide in [1]
> I didn't modify any of the code, since I'm using gnuradio 3.4. (But I
> adapted my OpenBTS.config)
> When I start openBTS I get the following output:
> http://pastebin.com/raw.php?i=nKbG4j3z  (I pasted the whole output)

These messages are normal. Read the TRX log and you might find a
RXTUNE error, which will be the only sign that something is wrong.

> Here is the openBTS config I use:
> http://pastebin.com/raw.php?i=aUQfYWGu
> (This is the last I used, but I tried several other configs)

Nothing wrong here.

> I would be glad if somebody had an idea where I could look next.

http://gnuradio.org/redmine/wiki/1/OpenBTSUHD
http://lists.sourceforge.net/lists/listinfo/openbts-discuss

  Thomas