[Sis-mia] Resolution SIS-R-2020-04-001 Agency Review of CCSDS 766.1-B-2 Digital Motion Imagery

[Jeremy.Mayer at dlr.de]

Scott,

Understood; that's older text, albeit refactored to remain in line with the "state of the world"... I would approve of your proposed text. Alternately, if there's a relevant section (discussing end-to-end reliability) in the CFDP blue/green books, we can punt completely and refer to that section.


Thanks,

Jeremy

________________________________
From: SIS-MIA <sis-mia-bounces at mailman.ccsds.org> on behalf of Burleigh, Scott C (US 312B) via SIS-MIA <sis-mia at mailman.ccsds.org>
Sent: Friday, July 31, 2020 12:37:00 AM
To: 'sis-mia at mailman.ccsds.org'
Subject: Re: [Sis-mia] Resolution SIS-R-2020-04-001 Agency Review of CCSDS 766.1-B-2 Digital Motion Imagery

Hi.  I was just now leafing through the Digital Motion Imagery pink sheets, in preparation for voting to send it to agency review, when some language in 3.7.22 caught my eye:

CFDP provides the following two classes for file transmission:

–        Class 1—Unreliable CFDP transfer over a reliable UT layer;

–        Class 2—Reliable CFDP.

For video data, class 2 CFDP shall be used for end-to-end reliability; however, user requirements may stipulate that Class 1 CFDP may be utilized.

A pre-RID, I guess: we really are trying to slowly deprecate class-2 CFDP in favor of running class-1 CFDP over BP/LTP (or just over LTP).  That policy isn’t yet so fully established as to merit a SHALL in this language, but maybe a SHOULD.  Something like “Class-1 CFDP is recommended for the transmission of video data files.  For reliable transmission, class-1 CFDP over a reliable UT layer, with closure requested, is recommended.”

Scott


From: CESG <cesg-bounces at mailman.ccsds.org> On Behalf Of Burleigh, Scott C (US 312B) via CESG
Sent: Thursday, April 16, 2020 6:44 PM
To: Thomas Gannett <thomas.gannett at tgannett.net>
Cc: 'sis-mia at mailman.ccsds.org' <sis-mia at mailman.ccsds.org>; cesg at mailman.ccsds.org
Subject: [EXTERNAL] [CESG] Resolution SIS-R-2020-04-001 Agency Review of CCSDS 766.1-B-2 Digital Motion Imagery


Hi.  A resolution from SIS:

The Space Internetworking Services Area,

CONSIDERING that

·         the Motion Imagery and Applications (MIA) Working Group has reviewed Pink Sheets that add the h.265 compression protocol to the Digital Motion Imagery Blue Book, and

·         the Working Group has reached consensus on requesting Agency Review of these Pink Sheets,

RESOLVES to request that CESG approve an Agency Review of the Pink Sheets titled “CCSDS 766.1-B-2 Digital Motion Imagery”.

Scott
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