Hi Priyanka,
On Tue, Jul 09, 2013 at 02:31:19PM +0800, Priyanka Behl wrote:
I have to setup a complete call with voice support and
also a complete
working GPRS network with just simulation and no physical base
station, is it achievable? It would be great if someone could
enlighten me on this.
Of course it is achievable - it primarily depends on how much
development effort you are capable / willing to do as part of the task,
and particularly how close to the real world you need to be.
For the GSM (voice/sms/ussd/...) side, connecting OsmocomBB with
Osmo-BTS has been suggested several times. Instead of sending the
messages over a real L1, you could send them over GSMTAP. Different
ARFCN/timeslot/etc. can be encoded in the GSMTAP header, and you have
nice debugging by the GSMTAP dissector in wireshark.
I would guess that this can be done by a skilled developer in one week.
For GPRS, a similar approach can be used. but: there is no MS-side
implementation at all. You may be able to reuse higher layers like
SNDCP and LLC from OsmoSGSN, as well as RLC/MAC message encoding and
parsing from osmo-pcu. but you will definitely have to implement the
full MS-side GPRS stack, mostly from scratch. We're talking about
something in the oder of (few) months of development time.
Regards,
Harald
--
- Harald Welte <laforge(a)gnumonks.org>
http://laforge.gnumonks.org/
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