[linux-dvb] DVB-H support

Uri Shkolnik urishk at yahoo.com
Mon Sep 22 17:43:04 CEST 2008




--- On Mon, 9/22/08, Javier Gálvez Guerrero <javier.galvez.guerrero at gmail.com> wrote:

> From: Javier Gálvez Guerrero <javier.galvez.guerrero at gmail.com>
> Subject: Re: [linux-dvb] DVB-H support
> To: urishk at yahoo.com
> Cc: linux-dvb at linuxtv.org
> Date: Monday, September 22, 2008, 3:02 PM
> Hi Uri,
> 
> Thanks for your answer.
> 

Welcome

> 2008/9/22 Uri Shkolnik <urishk at yahoo.com>
> 
> > Hi,
> >
> > yep, you can do it with any Siano chipset based
> device.
> 
> 
> Do you know any specific device with Siano chipset that
> works properly or
> any device will do?
>

Since I'm Siano's software architect I can't (or won't) recommend any specific hardware manufacturer from all who use Siano's chipsets (you can understand me here....)

Please refer to other people from this ML regarding this issue. 
 
> 
> > How are you going to deal with ESG and HO?
> >
> 
> I want to develop a handover framework for IEEE 802.11 //
> 3G // DVB-H

I don't think that it's feasible to combine those standards HO to single framework. The HO schemes and guidelines are totally different. 

> networks, dealing with different parameters depending on
> what drivers API
> allowed me, but basically the signal strength would be the
> main one.

Signal strength can not be a sole parameter, even not the major one. You should use the strength, SNR, BER, RSSI, geographic network data and other for good algorithm for DVB-H HO.

> 
> Regarding the ESG I don't know how to deal with it as
> I'm a complete novice
> with LinuxTV/dvb-utils. First I wanted to know if it was
> possible to get
> DVB-H streams with it and what hardware would be proper. I
> supposed that
> demuxing and selecting the contents would be nearly the
> same that in DVB-T,
> as the main difference is the time slicing in DVB-H
> streams.
> 

Not so easily. DVB-H is RTP based, so the content is delivered using IP multicast. True you can pass the entire non-PSI/SI ES (meaning most of the TS) to the IP stack, but this is not feasible for weak machine (embedded) and even for strong machines it will take lots of CPU resources. In order to know which ES to extract, you need the parse the ESG (xml based).

> Anyway, do you have any idea or piece of advice? Is what I
> want to do
> possible or not?
> 

Sure it's possible, but its a big task....

> >
> >
> >
> > Best Regards,
> >
> > Uri Shkolnik
> >
> >
> >
> > --- On Mon, 9/22/08, Javier Gálvez Guerrero <
> > javier.galvez.guerrero at gmail.com> wrote:
> >
> > > From: Javier Gálvez Guerrero
> <javier.galvez.guerrero at gmail.com>
> > > Subject: [linux-dvb] DVB-H support
> > > To: linux-dvb at linuxtv.org
> > > Date: Monday, September 22, 2008, 11:01 AM
> > > Hi everyone,
> > >
> > > Has anyone succeed in receiving a DVB-H stream
> with
> > > dvb-utils? If so, which
> > > hardware have you used?
> > >
> > > Any help is much appreciated.
> > >
> > > Regards,
> > > Javi
> > > _______________________________________________
> > > linux-dvb mailing list
> > > linux-dvb at linuxtv.org
> > >
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
> >
> >
> >
> >


      



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