Re: Switching mpeg2 packets on satellite

["Kearney" <clausen@cosy.sbg.ac.at>]

----- Original Message -----
From: <harri.hakulinen@nokia.com>
To: <ip-dvb@erg.abdn.ac.uk>
Sent: Monday, April 22, 2002 7:06 AM
Subject: RE: Switching mpeg2 packets on satellite


> Moro, It seems that we are approaching the point...
>
> If you put "Label" to TS level, you are really playing
> the "ATM card", because you now have PID/Label pair in
> comparison to VPI/VCI pair.
>
> In other words, that label can't really relate to individual
> SNDU's, because they really are "inside the pipe".
>
> If you want to switch SNDU's, you need to do it based on
> a field that is inside SNDU...
>
Right - if you really want to use the Label for switching you need to map it
into each TS-packet header, as close as possible to the PID field. Otherwise
you have to reassemble the complete SNDU and switch that packet - fragment
it again into TS-packets etc...; except, of course, if the next link is e.g.
a PPP link.....

> //Harri
--Horst
>
> > -----Original Message-----
> > From: ext Ghassane Aniba [mailto:Ghassane.Aniba@sophia.inria.fr]
> > Sent: Monday, April 22, 2002 3:04 PM
> > To: ip-dvb@erg.abdn.ac.uk
> > Subject: Switching mpeg2 packets on satellite
> >
> >
> > HI,
> > First, if we want switch the mpeg packet on the satellite, we need to
> > add a label to distinguish between the differents flows.
> >
> > Second, if we have two SNDUs with differents destinations, we can't put
> > them or their fragments in  the same mpeg2-tp, or we need a label for
> > each fragment added to the pointer which is specified in the last draft.
> >
> > Aniba.
> >
> > --
> > Ghassane ANIBA
> > INRIA (Projet PLANETE)             | Email :
> > ghassane.aniba@sophia.inria.fr
> > 2004, Route des Lucioles BP 93     | Phone : +33 4 92 38 75 63
> > 06902 Sophia Antipolis CEDEX France| Fax   : +33 4 92 38 79 78
> >
>