umtrx - OpenBTS UMTS Support

Alexander Chemeris alexander.chemeris at gmail.com
Mon Aug 17 16:43:50 UTC 2015


Amber & Sarosh,

Osmo-trx works only with the GSM version of OpenBTS. UMTS version has its
own transceiver, which supports UHD AFAIK, so you just need to add
resampling support to get it working with UmTRX.

On Mon, Aug 17, 2015 at 1:54 AM, Amber and Sarosh <amber_sarosh at hotmail.com>
wrote:

> Thanks for your response Alexander.
> Does this mean that OpenBTS-UMTS with osmo-trx as transceiver should run
> fine with umtrx? We have tried to do this but either OpenBTS-UMTS or
> osmo-trx crashes every time.
>
> Regards,
> Amber & Sarosh
>
>
> > From: alexander.chemeris at gmail.com
> > Date: Thu, 13 Aug 2015 11:58:07 -0400
> > Subject: Re: umtrx - OpenBTS UMTS Support
> > To: amber_sarosh at hotmail.com
> > CC: michael.iedema at rangenetworks.com; umtrx at lists.osmocom.org;
> tom at tsou.cc; andy.avtushenko at gmail.com; arthur.rabate at gmail.com
>
> >
> > Amber & Sarosh,
> >
> > UmTRX should work fine with the standard OpenBTS. If it doesn't, you
> > can try to use osmo-trx as a transceiver instead of a standard OpenBTS
> > transceiver. OsmoTRX has a lot of improvements compared to the latter.
> >
> > We don't have any special branch for OpenBTS-UMTS, as we haven't tried
> > it ourselves. The only issue I can see is if OpenBTS-UMTS transceiver
> > doesn't support our sample rate. In that case one will need to add a
> > resampler to the code (borrowing one from osmo-trx shold work).
> >
> > Patches and sharing experience is more than welcome.
> >
> > On Thu, Aug 13, 2015 at 2:57 AM, Amber and Sarosh
> > <amber_sarosh at hotmail.com> wrote:
> > > Thanks for your response.
> > > OpenBTS(2G) has a separate branch at
> > > https://github.com/fairwaves/openbts-2.8
> <https://t.yesware.com/tl/f95bee9e3006b0a4fbb5d87c3f2c04fb2de74bfc/e5366caf9c1eb284894809255bfbabac/8eece341c4ea0732be599fe1b55ab71f?ytl=https%3A%2F%2Fgithub.com%2Ffairwaves%2Fopenbts-2.8>
> with all the required changes to
> > > run OpenBTS with umtrx hardware. Is there any such source available for
> > > running OpenBTS-UMTS(3G) with umtrx as well?
> > >
> > > Regards,
> > > Amber & Sarosh
> > >
> > >
> > > ________________________________
> > > Date: Wed, 12 Aug 2015 05:17:14 -0800
> > > Subject: Re: umtrx - OpenBTS UMTS Support
> > > From: andy.avtushenko at gmail.com
> > > To: amber_sarosh at hotmail.com
> > > CC: alexander.chemeris at gmail.com; umtrx at lists.osmocom.org; tom at tsou.cc
> ;
> > > arthur.rabate at gmail.com; michael.iedema at rangenetworks.com
> > >
> > >
> > > Hi Amber and Sarosh.
> > > UmTRX will work with OpenBTS-UMTS
> > > You can find all related information
> > > http://openbts.org/w/index.php/OpenBTS-UMTS
> <https://t.yesware.com/tl/f95bee9e3006b0a4fbb5d87c3f2c04fb2de74bfc/e5366caf9c1eb284894809255bfbabac/63e8380296120450f26e7f9b2baa8215?ytl=http%3A%2F%2Fopenbts.org%2Fw%2Findex.php%2FOpenBTS-UMTS>
> > > I've attached getting started with OpenBTS, you will find a lot of
> useful
> > > information regarding OpenBTS software as well
> > > Thanks
> > >
> > > 2015-08-12 1:14 GMT-08:00 Amber and Sarosh <amber_sarosh at hotmail.com>:
> > >
> > > Hi
> > > Can you please confirm if umtrx works with OpenBTS-UMTS version?
> > >
> > > Regards,
> > > Amber & Sarosh
> > >
> > >
> > >
> > >
> > > --
> > > Best regards,
> > > Andy
> >
> >
> >
> > --
> > Regards,
> > Alexander Chemeris.
> > CEO, Fairwaves, Inc.
> > https://fairwaves.co
> <https://t.yesware.com/tl/f95bee9e3006b0a4fbb5d87c3f2c04fb2de74bfc/e5366caf9c1eb284894809255bfbabac/70cb852ae6723e4a1f6c80cb0346e9e6?ytl=https%3A%2F%2Ffairwaves.co>
> >
> > 
> <https://t.yesware.com/tl/f95bee9e3006b0a4fbb5d87c3f2c04fb2de74bfc/e5366caf9c1eb284894809255bfbabac/de659b11de3e420be110050cfdb3c27c?ytl=http%3A%2F%2Feepurl.com%2FbaL_pf>
>



-- 
Regards,
Alexander Chemeris.
CEO, Fairwaves, Inc.
https://fairwaves.co
<https://t.yesware.com/tl/f95bee9e3006b0a4fbb5d87c3f2c04fb2de74bfc/e5366caf9c1eb284894809255bfbabac/596152af632f115e5f36835ca71b3ae8?ytl=https%3A%2F%2Ffairwaves.co>


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