AW: test conditions provided
Gero.X.Baese at MCHP.SIEMENS.DE
Wed Oct 18 08:53:35 EDT 2000
Dear experts, Mr. Li,
we want to proceed with a technical and objective discussion.
Everybody is solicited to suggest further improvements for the provided
test conditions to become as realistic as possible. Any constructive
criticism is welcome as well.
Concerning your point Mr. Li, if you read the test conditions
carefully you will see it is one item out of a list where you
have the choice to take what you think is suitable. You will
find the H.263 Wireless Profile also.
Furthermore we want to discuss the main points of the test
conditions (bearer service, ...). What is your opinion
about the UMTS scenario ?
We are still convinced, the provided test conditions are fair
> -----Ursprüngliche Nachricht-----
> Von: Adam Li [mailto:adamli at icsl.ucla.edu]
> Gesendet am: Montag, 16. Oktober 2000 07:00
> An: Mailing list for parties associated with ITU-T Study Group 16
> Cc: Baese Gero; Yung Lyul Lee; Jeong-Hoon Park; John D. Villasenor
> Betreff: RE: test conditions provided
> Dear experts and Mr. Gero,
> It seems that the conditions described in the document can hardly be
> called "reasonable and fair conditions".
> For example, for Media codecs, it specifies H.263 with Annex O. As we
> all know, Annex O (with spatial, temporal and SNR scalability) is NOT
> in the Wireless Profiles of H.263. Indeed, it is not in ANY of the
> profiles defined in H.263.
> The whole Annex O is such a very complex algorithm, that it is NOT
> even in the most complex profiles where complexity is not that much a
> concern. It is really unimaginable that any mobile applications will
> use Annex O.
> If the Siemens proposal needed such a un-realistic scenario to provide
> any possible gain, the wireless connection oriented Annex I seems is
> not the right place for it.
> Since Mr. Gero have just proposed the condition now, he may have
> enough resource to test it before the document submission date. Maybe
> you can test it also without Annex O, Mr. Gero?
> Adam Li
> Adam H. Li, Ph.D.
> Image Communication Lab (310) 825-5178 (Lab)
> University of California, Los Angeles (310) 825-7928 (Fax)
> > -----Original Message-----
> > From: Mailing list for parties associated with ITU-T Study Group 16
> > [mailto:ITU-SG16 at mailbag.cps.intel.com]On Behalf Of Baese Gero
> > Sent: Friday, October 13, 2000 7:38 AM
> > To: ITU-SG16 at mailbag.cps.intel.com
> > Subject: test conditions provided
> > Dear experts,
> > the long lasting diskussion about the superiority of one
> > of the proposals concerning error resilient transmission
> > of progressive multimedia streams(H.323 Annex I) needs
> > to be decided on an objective basis soon.
> > Therefor we are providing reasonable and fair test conditions.
> > The test conditions are focused on a common UMTS scenario with
> > video input and PSNR as an objective quality measurement.
> > Furthermore
> > every step in between is well defined and a graphic visualization of
> > the outcome is the ideal and easy basis, with not much room for
> > interpretation, for the decision process.
> > Comments, questions and supplements are welcome.
> > Best wishes
> > Gero Baese
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