RE: Discussion on IP over DVB-S2 -

[Jérôme Lacan <jerome.lacan@ensica.fr>]

> -----Message d'origine-----
> De : owner-ipdvb@erg.abdn.ac.uk 
> [mailto:owner-ipdvb@erg.abdn.ac.uk] De la part de Gorry Fairhurst
> Envoyé : mercredi 22 juin 2005 14:16
> À : ipdvb@erg.abdn.ac.uk
> Objet : Re: Discussion on IP over DVB-S2 -
> 
> 
> I think DVB-S2 is a topic which seems related to the work of 
> the ipdvb WG, and that there is probably sufficient expertise 
> within this WG to discuss this (I've seen several responses already).
> 
> I'd encourage three things:
> 
> (i) This is an IETF mailing list - all contributions must 
> adhere to the IETF copyright rules, please do not introduce 
> things that include IPR, unless you notify the IETF of this.
> 
> (ii) This topic does not address a current Charter item of 
> the ipdvb Working Group. The discussion of the topic on the 
> list does NOT imply the willingness of the IETF to 
> standardise a new method. This is an IESG decision, that 
> would require prior publication of an Internet Draft, and 
> much discussion.
> 
> (iii) I think we need to start with a requirement for what 
> needs to be done, this would be useful to many in this WG. 
> The normal way to contribute such documents is again, by 
> publishing of an Internet-Draft on the topic. I do encourage 
> you to do this.

OK. I propose you to begin the preparation of this I-D.
Is it possible to have an agenda slot at the next IETF meeting to present it
? 

Jerome




> 
> Best wishes,
> 
> Gorry
> (ipdvb WG Chair)
> 
> P.S. I am also interested in this topic.
> 
> Jérôme Lacan wrote:
> 
> > Dear all,
> > 
> > With our colleagues from Alcatel-Space, we are working on 
> the mapping 
> > of IP over DVB-S2.
> > 
> > Recall that DVB-S2 is the "second generation" DVB system 
> for broadband 
> > satellite service. It will probably replace DVB-S in the 
> next few years.
> > You
> > can find the specifications in ETSI document - EN 302 307.
> > 
> > One of the main business targets of DVB-S2 is IP packet 
> transmission. 
> > The mapping/encapsulation of IP over this system remains an 
> open research issue.
> > Actually, DVB-S2 proposes 2 modes to transport the data. The first 
> > one, Transport Stream-TS, is designed to transport MPEG2-TS packets 
> > whereas the second one, Generic Stream-GS, is designed to transport 
> > continuous streams (which can be compound of variable size 
> packets). 
> > Regardless of the chosen mode, the resulting data are then 
> mapped on 
> > Data Fields (of length varying from 16008 to 58192 bits) to 
> be encoded by the FEC (LDPC + BCH).
> > 
> > Several options can be considered for this mapping. We 
> think that the 
> > ipdvb group is a good place to start a discussion on this subject.
> > If you are interested on this subject, could you please 
> manifest your 
> > interest?
> > 
> > best regards,
> > 
> > Jerome Lacan
> > ENSICA/TeSA/LAAS-CNRS
> > Toulouse, France
> > 
> > 
>