[Css-csts] Draft Red FF book on CWE

Tue Jun 19 06:36:34 UTC 2018

Hi Erik and John,
I think John summarizes quite nicely the position of the CSTS WG as 
discussed in Gaithersburg (yes, saves some typing :-). However, since the 
CSTS SFW should contain soon all changes required for CSTS FF I wanted to 
talk to Wolfgang, back in July, when he thinks the updates can be done and 
how close we are to a SFW B-2 ready for AD review and submission to 
secretariat for Agency Review. As far as I had understood, the current 
changes to the SFW impact mostly the forward procedures, which justifies 
the prototyping approach (SFW covered by FF prototyping). For SFW updates 
impacting return procedures we have to be a little bit careful to
        a) not impact TD (as far as we can)
        b) avoid the need of prototyping again the SFW return procedures, 
which is not covered yet by anything

I have (had) the hope that we could reach these two conditions for the SFW 
and even more, that it would be perhaps possible to go down the route Erik 
outlines, namely to pass the SFW also for review relatively soon. Clearly 
we can then prioritize the FF over the SFW.

What I always have in mind is that we must by all means work on the 
Functional Resources. Currently I believe they are not completed to an 
extent that allows an MD implementation.

Best regards,
Holger

Holger Dreihahn
European Spacecraft Operations Centre | European Space Agency | S-431
+49 6151 90 2233 | http://www.esa.int/esoc

From:   "Barkley, Erik J (3970)" <erik.j.barkley at jpl.nasa.gov>
To:     John Pietras <john.pietras at gst.com>, "Holger.Dreihahn at esa.int" 
<Holger.Dreihahn at esa.int>
Cc:     CCSDS_CSTSWG <css-csts at mailman.ccsds.org>, "Colin.Haddow at esa.int" 
<Colin.Haddow at esa.int>
Date:   19/06/2018 04:04
Subject:        RE: Draft Red FF book on CWE

John,

Thanks for the inputs, background.  I certainly am aware of the priorities 
that NASA has expressed with regard to FF CSTS.  We have TD CSTS which 
will likely be going forward for blue book publication consideration as 
soon as the prototyping completes and I would very much not like to have 
this upset by changes to the framework (probably slim-to-none chance of 
that as no doubt the FF CSTS supporting changes affect the forward side of 
the framework only? ).  In any case, I still look forward to hearing what 
Holger has to say – perhaps you have saved him some typing :-) 

Best regards,
-Erik

From: John Pietras <john.pietras at gst.com> 
Sent: Monday, June 18, 2018 6:27 PM
To: Barkley, Erik J (3970) <erik.j.barkley at jpl.nasa.gov>; 
Holger.Dreihahn at esa.int
Cc: CCSDS_CSTSWG <css-csts at mailman.ccsds.org>
Subject: RE: Draft Red FF book on CWE

Erik,
If I can offer some thoughts, I believe that I can address the WG’s 
position on this. Of course, if I’ve misunderstood something I’m sure that 
Holger can set the record straight. 

First, we did (and do) have the understanding that getting the FF book 
published is a very high priority, at least for NASA. We are hoping to 
have the F Red-1 review completed and the RID resolutions determined (that 
is, know the answers even if they aren’t updated in the book itself) by 31 
December, on a path to get a Blue-1 in the summer of 2019. We were 
concerned that delaying the review of the FF book until both it and the 
updated SFW can get through the Secretariat editing process and have both 
of them formally reviewed simultaneously could seriously jeopardize that 
schedule. We thought maybe you (and maybe Peter) could pull some strings 
to bump up the priority in the Secretariat’s queue for the FF book, but 
didn’t want to push our luck with doing that for 2 books. Throw August 
slowdown in the middle of all of this and you can see our motivation for 
focusing as narrowly as we could justifiably get away with.

Second, although we are quite confident that the current draft SFW Pink 
Book addresses the issues raised by the FF book in the procedures most 
directly associated with the FF services, there may be some residual 
“echoes” that affect other procedures in the book. Due to our focus on 
supporting the progression of the FF book, the focus on the SFW draft Pink 
Book has been primarily on those FF-related procedures. There is also the 
issue of re-prototyping the other procedures that have been affects, for 
which the current thinking is that the WG can do some regression testing 
of the changes with the other CSTSes (MD and TD) that use them. 

So the approach that we WG developed in Gaithersburg was as follows:
1.       Get the SFW draft Pink Book to a point where it accurately 
reflects the current thinking, and matches and supports the FF book.
2.       Make the SFW *informal draft* Pink Book available *as a review 
aid* for the FF Red-1 review. Perhaps by posting it to the public folder 
of the CSTSWG CWE. We could even informally solicit comments on the SFW 
changes in case anyone wishes to offer them.
3.       While the FF Red-1 review is underway (e.g., late summer into 
fall), work more on the SFW Pink Book, ideally to the point where it could 
be ready for submission the Secretariat. However, depending on the actual 
timing of the FF red-1 book review completion and the process of 
completion of the SFW Pink Book generation, the WG might decide to wait to 
see if any of the FF review comments are significant enough to ripple back 
into the SFW itself.
4.       Conduct the formal CCSDS review of the SFW Pink Book while the FF 
book is being updated to Blue-1 (hopefully) or Red-2. In any case, the 
goal would be to have an approved Blue-2 SFW in the next spring/summer 
timeframe, ready to support Blue-1 FF if we are fortunate enough to be 
able to go directly to FF Blue-1. 

Peter Shames was in the room with us when we discussed this and he thought 
it was a good approach.

Holger, have a done a reasonably good job of summarizing our approach?

Best regards,
John

From: CSS-CSTS [mailto:css-csts-bounces at mailman.ccsds.org] On Behalf Of 
Barkley, Erik J (3970)
Sent: Monday, June 18, 2018 8:00 PM
To: Holger.Dreihahn at esa.int
Cc: CCSDS_CSTSWG <css-csts at mailman.ccsds.org>
Subject: Re: [Css-csts] Draft Red FF book on CWE

Dear Holger,
Thank you very much for sending the notification and the link to the FF 
CSTS book. I will endeavor to take a look and get through the review as 
soon as possible. However, in the meantime, I do have a question as to 
approaching agency review for this. To me it makes sense, if we can, to 
run the reviews of the updated SFW (pink sheets) in parallel with those of 
the FF CSTS book.  The rationale being that if a reviewer is being 
thorough (yes it might happen :-)) it would be good to have both books 
available. Can you please let me know your thoughts on this?

Best regards,
-Erik

From: Holger.Dreihahn at esa.int <Holger.Dreihahn at esa.int> 
Sent: Monday, June 18, 2018 5:21 AM
To: Barkley, Erik J (3970) <erik.j.barkley at jpl.nasa.gov>
Cc: CCSDS_CSTSWG <css-csts at mailman.ccsds.org>
Subject: Fw: Draft Red FF book on CWE

Dear Erik, 
Please find below the link to the CSTS FF Red-1 book for your review and 
approval for submission to secretariat. Below is also a link to the 
updated CSTS SFW (now a Draft Pink Book). There are some CSTS SFW changes 
pending, but as said below we believe the CSTS SFW is fine for serving the 
purpose of reviewing the CSTS FF. 

Please let us know your comments and then how to proceed. 

Best regards, 
Holger 

Holger Dreihahn
European Spacecraft Operations Centre | European Space Agency | S-431
+49 6151 90 2233 | http://www.esa.int/esoc 
----- Forwarded by Holger Dreihahn/esoc/ESA on 18/06/2018 14:18 ----- 

From:        John Pietras <john.pietras at gst.com> 
To:        "Holger.Dreihahn at esa.int" <Holger.Dreihahn at esa.int>, "Pham, 
Timothy T (3300) (timothy.t.pham at jpl.nasa.gov)" <
timothy.t.pham at jpl.nasa.gov>, Wolfgang Hell <wo_._he at t-online.de> 
Date:        17/06/2018 21:14 
Subject:        Draft Red FF book on CWE 

Dear Holger, Tim, and Wolfgang, 
I have finished my updates of the FF book, which include the updates from 
Wolfgang’s review plus those resulting from the discussion that Wolfgang 
and I had last Monday. I believe that unless you have additional comments, 
this is ready to send to Erik for his AD review and approval for 
submission to the Secretariat to request Red-1 review. The draft FF book 
can be found at URL 
https://cwe.ccsds.org/css/docs/CSS-CSTS/CWE%20Private/Future%20Services%20using%20Toolkit/Forward%20Frame%20CSTS/FF-CSTS-r-0_1-180615.zip 

Note that there is a difference between the information Annex “Cross 
References to Cross Support Transfer Service Specification Framework” 
(Annex L) and the corresponding annexes in the MD and TD book and 
Guidelines. Section 4.18 of the Guidelines states “The CSTS shall provide 
in an informative annex a table listing the specific (sub)sections and 
paragraphs of the CSTS Specification Framework (reference [1]) that are 
referenced by the new CSTS, and identifies the (sub)sections and 
paragraphs of this new CSTS that make specific reference to each of those 
CSTS Specification Framework (sub)sections/paragraphs.” The reason that 
this annex is to exist is to aid the updating of the CSTS specification if 
and when the SFW is updated. I had suggested this particular approach. 
However, I have found that constructing this annex is a time-consuming and 
error-prone process. For the Forward Frames book I have instead listed the 
pages of the FF book on which the references exist instead of the 
(sub)sections of the FF book in which the cross-references appear. This 
allowed me to use Word’s built-in indexing capability. This produces a 
much more complete and consistent cross reference annex, and it serves the 
same purpose as the originally-defined annex. I recommend that we use this 
approach from now on. If you do not agree that this approach can be used, 
I can generate the (sub)section-based annex in the coming weeks, but for 
the purposes of Erik’s review the current form is fine. (Note also that if 
we take this approach, we don’t necessarily need to change the 
corresponding annexes MD and TD books because they still meet the intent 
of the annexes.)   

Wolfgang had sent to me his markup of the CSTS SFW, to which I aligned the 
FF book. In our discussion last Monday, Wolfgang and discovered a few more 
changes that need to be made to the SFW, which he will make when he 
returns in July. In the process of finishing the FF book edits, I also 
discovered a very few more items that need to be updated in the SFW, 
mostly along the lines of making agreed changes consistent across the DP, 
BDP, and SCPD procedures. I have documented these needed changes in detail 
and will send them tomorrow to Wolfgang and copy you. I have also changed 
the labelling of the draft SFW to that of a Draft Pink Book and uploaded 
it to the CWE at URL 
https://cwe.ccsds.org/css/docs/CSS-CSTS/CWE%20Private/CSTS%20Framework%20and%20Concept/CSTS%20SFW%20Pink%20Book/921x1p1x1%20draft%20180613.doc 

Wolfgang and I agreed that for the purposes of Erik’s review the changes 
that are still to be made to the SFW are in the noise, and so we agree 
that we can safely point Erik to this draft for whatever cross-referencing 
he might choose to do. 

Best regards, 
John 

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It is intended only for the recipient(s) named above.
It may contain proprietary information and/or protected content.
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