[CESG] [EXTERNAL] MAL PIDs spreadsheet

Tomaso.deCola at dlr.de Tomaso.deCola at dlr.de
Fri Jul 29 14:49:16 UTC 2022

Dear All,

Following Erik's email, I also looked into the excel sheet prepared by Peter with all remarks&iterations made by him, Mehran, and further extended by Erik. I've also added a few comments (updated version herewith attached, also uploaded on cwe).

In general, as already commented during the telco a few weeks ago, I don't see unrecoverable points. In particular:

  1.  This is a revision of an existing blue book and I think it's not appropriate to move it to a different track (i.e. magenta), since this revision is indeed part of the current WG charter.
  2.  The main critical points are in my opinion confined to the first sections in terms of definition, terminology and overall scope. Then, the security implications are also currently vaguely addressed, whereby a rework of this will be probably necessary.
  3.  Some of the points have been in part already answered by Mehran (and in general by the WG), so that probably implementing the remaining points should not be an exhausting exercise.
  4.  Last but not the least, I know that the preparation of the book has been subject to thorough iterations in the WG in order to take into account all concerns/requirements exposed by the different agencies. Moreover I have the impression the delayed agency review is affecting also books under preparation in the same WG or at least within the overall MOIMS area. I certainly concur that a book can go to agency review only when fulfils certain CESG quality principles, but we cannot certainly delay the process forever, more importantly if the book is a (in my opinion light) revision of an existing one. Maybe some points could have been even directly raised during agency review.

Best Regards,


From: CESG <cesg-bounces at mailman.ccsds.org> On Behalf Of Barkley, Erik J (US 3970) via CESG
Sent: Donnerstag, 28. Juli 2022 02:31
To: cesg at mailman.ccsds.org
Subject: Re: [CESG] [EXTERNAL] MAL PIDs spreadsheet

Dear CESG Colleagues,

At the July 18 meeting I agreed to take a look at the spreadsheet that Peter prepared and to check the PIDs listed therein against the latest MAL document. Essentially to perform a review of the review. Accordingly, please see the attached spreadsheet.

My conclusion is that, on balance, there does indeed need to be some revision of the document prior to agency review. Having said that, I will note, that as I was on vacation and did not participate in the vote, these are of course not any kind of conditions but rather hopefully some assistance in sorting out the PIDs that were recorded for the vote.  To be more specific, my findings can be summarized as:

  1.  Terminology is used in multiple senses in different parts of the document and/or not defined in the terminology section; this tends to lead some definitions that are circular (e.g., "...attribute extends 'Attribute'...")
  2.  The PICs proforma is not properly stated (see comments in the spreadsheet)
  3.  It seems that some sort of requirements on the transport layer should be stated
  4.  Cybersecurity needs to be addressed

I will also note there are some of the PIDs where I think Peter stated some things incorrectly and/or I did not really see the issue.  Perhaps this is a case where the definition of success is getting everybody angry at you :-)

Best regards,

Ps, the spreadsheet has also been uploaded to the CWE space used for the July 18 meeting.

From: CESG <cesg-bounces at mailman.ccsds.org<mailto:cesg-bounces at mailman.ccsds.org>> On Behalf Of Barkley, Erik J (US 3970) via CESG
Sent: Monday, July 18, 2022 12:25
To: Shames, Peter M (US 312B) <peter.m.shames at jpl.nasa.gov<mailto:peter.m.shames at jpl.nasa.gov>>
Cc: cesg at mailman.ccsds.org<mailto:cesg at mailman.ccsds.org>
Subject: [EXTERNAL] [CESG] MAL PIDs spreadsheet

Hello Peter,

As you may recall, I volunteered to take a look at the MO MAL Agency Review CESG Poll PIDs and check them against the latest MAL document.  I see the presentation, dated July 11 in the CWE for CESG, but I do not find the spreadsheet there.  Can you please either send or (probably better) post the spreadsheet?  Thank you.

Best regards,

Erik Barkley
Cross Support Services Area Director
Consultative Committee for Space Data Systems

+1 818.393.4972

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