sgsn/ggsn bitrate tests and reflexions

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carcelle carcellelist at free.fr
Thu Apr 26 10:22:16 UTC 2012


Hi Harald,

thanks for your reply

On Thu, Apr 26, 2012 at 08:56:08AM +0200, Harald Welte wrote:
> On Thu, Apr 26, 2012 at 08:23:20AM +0200, carcelle wrote:
> > Should i change the channel configuration to get more bitrate ? 
> 
> you can increase the bitrate by adding more PDCH on other timeslots.
> You will lose those for voice, though.  The nanoBTS is capable of
> dynamic TCH/F + PDCH switching, but we don't support that in OpenBSC
> yet.

ok understand, TCH/F + PDCH repartitions based on your
how could i calcultate the theorical layer2/ip troughput available for one PDCH
and correlate it to the troughput measured from the MS to an external IP ?
 
> > Should add more cells (bts?) to add more channels ?
> 
> More BTSs (stand-alone) is not improving capacity, but you can increase
> coverage by putting them at different locations.
> 
> If you stack BTSs (multi-TRX), you can e.g. run the firs TRX with 7*PDCH
> and run the second TRX with TCH.  This way you have maximum GPRS/EDGE
> bitrate, plus full set of voice channels.

Excellent, i will work in this direction and let you know.

My best regards,

Xavier.
 
> Regards,
> 	Harald
> -- 
> - Harald Welte <laforge at gnumonks.org>           http://laforge.gnumonks.org/
> ============================================================================
> "Privacy in residential applications is a desirable marketing option."
>                                                   (ETSI EN 300 175-7 Ch. A6)




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