RE: DRAFT TEXT v2 : All contributions most welcome

["Harald Skinnemoen" <harald.skinnemoen@nera.no>]

Gorry,

I suggest the following inclusions of reference to the ETSI BSM work in the
text:

> Background
>
> The need for DVB systems to carry data has already been recognised.

The ETSI Broadband Satelilte Multimedia Work Group also focuses work on
broadband satellite data communication, both for DVB and for non-DVB air
interfaces. ETSI BSM is further cooperating also with the DVB-BSS group,
which is outlining requirements for a furture DVB-S format.

> It
> has also been shown that problems exist with the current MPE
> specification, which led to an RFI being issued by DVB-IPI AHG.  This
> RFI requested information on current deficiencies (with any solutions)
> for the current MPE specification...... [and as before]



> Potential Solutions
>
> At present, only outline solutions have been proposed, including a
> leaner encapsulation. A leaner encapsulation, offering faster
> processing, may also permit a more flexible use of MPEG-2 PIDs.  The
> position of the encapulsation form the IP network viewpoint, and its
> relationship with the DVB systems stream needs also to be considered to
> ensure good and efficient interoperability.

It is also possible to envision a minimum encapsulation process that allows
even more optimum use of the spectrum, by segmenting IP packets in
optionally other than ATM (53 byte) or MPEG-TS (188 byte) segments. An
interface between satellite dependent and non-satellite dependent layers is
being considered by ETSI BSM, which may be useful in this respect.

>
> The following principles are suggested for this work:
>
> (iv) Minimal set of required options.

(v) Definition of future proof interface(s) that allows use of 'satelite
optimized' IP over various DVB (ATM, MPEG) or other segmentation schemes,
taking into account issues like adaptive coding and modulation.


> Recommendations
>
> DVB supports and contributes to the work being proposed within IETF to
> take advantage of the knowledge within that group and to align with
> other transport systems, e.g. IP over Cable Data Networks.

DVB also supports the harmonization of such work with ETSI BSM [, and TIA?]
<<comments on the TIA bit please!>>

>
> References
>
> EN 301 192 : Digital Video Broadcasting (DVB);
> DVB specification for data broadcasting
> European Standard (Telecommunications series)
>
> S. Bradner, IETF Working Group Guidelines and Procedures,
> RFC2418 (BCP25 ), September 1998.
>
> Bradner, S., Editor, The Internet Standards Process -- Revision 3,
> RFC 2026 (BCP 9), October 1996.
>
> Hovey, R., and S. Bradner, The Organizations involved in the IETF
> Standards Process, RFC 2028 (BCP 11), October 1996.
>
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>