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<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">Dear Peter,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">We will go through your remarks/issues at the upcoming meeting next week. Hopefully, we will decide on a way forward for all of them.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">See you next week in Toulouse,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">Gilles<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">Gilles MOURY</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D">
<br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">CNES Toulouse</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D">
</span><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b>De :</b> Shames, Peter M (US 312B) <peter.m.shames@jpl.nasa.gov>
<br>
<b>Envoyé :</b> samedi 8 octobre 2022 19:35<br>
<b>À :</b> Moury Gilles <Gilles.Moury@cnes.fr>; Ignacio Aguilar-Sanchez <ignacio.aguilar.sanchez@esa.int><br>
<b>Cc :</b> Weiss, Howard <Howard.Weiss@parsons.com>; Kazz, Greg (US 312B) <greg.j.kazz@jpl.nasa.gov><br>
<b>Objet :</b> Re: [EXTERNAL] SDLS Green Book issue 2 : WG resolution to publish for area approval<br>
<b>Importance :</b> Haute<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">Dear Gilles, Ignacio, et al,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">As I noted earlier I found a number of issues in this document that I thought needed to be addressed. Some of those are noted below. I am attaching the marked up document here. To be transparent I will state that I
only read through sec 1-3 and stopped at sec 4. So I primarily gave attention to the introductory, explanatory, non-normative parts of this non-normative document.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">That said, I believe that as you remedy the issues that I have pointed out that you will identify aspects of the latter chapters that also need to be fixed. My recommendation is that you make note of each of these kinds
of changes that you identify and apply them, uniformly, throughout all of the sections of the document. Some of these items that I found appeared to be inconsistencies from section to section that were derived from the changes in the protocol set, and coding
sets, and directionality caused by the later addition of new standards that were not smoothly integrated into the whole document. For example, USLP, in particular, seems to have been added in without due consideration being given to the fact that it can be
used in both forward and return directions, and with newer codes than Reed-Solomon.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Here are my high level observations:<o:p></o:p></span></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="MsoNormal" style="mso-list:l3 level1 lfo3"><span lang="EN-US">It appears that the inclusion of AOS and USLP in this discussion is less than thorough. Since both of them are now documented for use on the forward link, for “telecommanding” the treatment
of them in that context should, in my opinion, be more thorough and careful.<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l3 level1 lfo3"><span lang="EN-US">There is a lot of casual use of TC and TM when it appears that telecommand and telemetry are really mean. Likewise these words appear capitalized, implying the protocols, rather than
lower case, implying the functions. This should be cleared up.<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l3 level1 lfo3"><span lang="EN-US">There are a lot of references to the use of Reed Solomon which appear to make the assumption that this is the only forward coding allowed. I believe that we now allow LDPC as well on
the forward path, so this should be cleaned up too.<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l3 level1 lfo3"><span lang="EN-US">There is a fair amount of “we may do this” language in the document which seems to be a hold-over from White Book days. This should be cleaned up. It makes the document sound tentative.<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l3 level1 lfo3"><span lang="EN-US">It is not clear from the document if it is possible to apply these same link layer security approaches over an inter satellite link (ISL). That kind of deployment, of course, would bring
all kinds of key management complexities, and the whole use of terms like “telemetry” vs “telecommand” would need to be clarified, but in principle, given the essential protocol features, it should be possible to use it in this way. Is this intended, or even
possible?<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">There is more, but these are the top items that I identified in reading through the document. By the way, I do think that this is a really good piece of work technically, I just think we need to do a better job of explaining
what it is, how it is intended to work, and where it may be applied.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best regards, Peter<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:12.0pt;color:black">From:
</span></b><span lang="EN-US" style="font-size:12.0pt;color:black">Peter Shames <<a href="mailto:peter.m.shames@jpl.nasa.gov">peter.m.shames@jpl.nasa.gov</a>><br>
<b>Date: </b>Thursday, October 6, 2022 at 10:35 AM<br>
<b>To: </b>Gilles Moury <<a href="mailto:Gilles.Moury@cnes.fr">Gilles.Moury@cnes.fr</a>>, Ignacio Aguilar-Sanchez <<a href="mailto:ignacio.aguilar.sanchez@esa.int">ignacio.aguilar.sanchez@esa.int</a>><br>
<b>Cc: </b>Howie Weiss <<a href="mailto:Howard.Weiss@parsons.com">Howard.Weiss@parsons.com</a>><br>
<b>Subject: </b>Re: [EXTERNAL] SDLS Green Book issue 2 : WG resolution to publish for area approval<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><span lang="EN-US">Dear Gilles and Ignacio,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">This is just a quick “head’s up” that in reading through this draft of the SDLS GB I have found a quite large number of editorial issues. Many of these seem to be caused by the inclusion in the current draft of language
that appears to have been in there from “white book” days. Words like “we may do this” or “we think we will do that”. I think this is the time to clean that sort of thing up.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I also found references to SLE services that will never be defined (according to the CSS area) and several uses of non standard terms when agreed terms are already defined (authenticity vs authentication, TCR instead
of TT&C, etc).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Having found many of these issues in the first few pages (I am only up to page 2-11) I will continue to look through the rest of the doc and then send it back to you with a request to clean it all up.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks, Peter<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Gilles Moury <<a href="mailto:Gilles.Moury@cnes.fr">Gilles.Moury@cnes.fr</a>><br>
<b>Date: </b>Thursday, October 6, 2022 at 8:07 AM<br>
<b>To: </b>Ignacio Aguilar-Sanchez <<a href="mailto:ignacio.aguilar.sanchez@esa.int">ignacio.aguilar.sanchez@esa.int</a>>, Peter Shames <<a href="mailto:peter.m.shames@jpl.nasa.gov">peter.m.shames@jpl.nasa.gov</a>><br>
<b>Cc: </b>Howie Weiss <<a href="mailto:Howard.Weiss@parsons.com">Howard.Weiss@parsons.com</a>><br>
<b>Subject: </b>[EXTERNAL] SDLS Green Book issue 2 : WG resolution to publish for area approval<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal"><span style="color:#1F497D">Dear Ignacio and Peter,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Please find attached an SDLS WG resolution to publish SDLS Green Book Issue 2, together with the final draft of the updated document. Please indicate at your earliest convenience whether you approve
this resolution requesting CESG/CMC publication poll.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Gilles<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">Gilles MOURY</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D">
<br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">SDLS WG Chairman</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D">
</span><span style="color:#1F497D"><o:p></o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b>De :</b> Moury Gilles <br>
<b>Envoyé :</b> jeudi 6 octobre 2022 16:54<br>
<b>À :</b> <a href="mailto:sls-sea-dls@mailman.ccsds.org">sls-sea-dls@mailman.ccsds.org</a><br>
<b>Objet :</b> SDLS Green Book issue 2 : WG resolution to publish<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Dear SDLS WG member,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Please find attached the WG resolution to publish SDLS Green Book Issue 2 (final draft attached) submitted to SLS and SEA area directors.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Gilles<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">Gilles MOURY</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D">
<br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">SDLS WG Chairman</span><span style="color:#1F497D"><o:p></o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b>De :</b> SLS-SEA-DLS <<a href="mailto:sls-sea-dls-bounces@mailman.ccsds.org">sls-sea-dls-bounces@mailman.ccsds.org</a>>
<b>De la part de</b> Moury Gilles via SLS-SEA-DLS<br>
<b>Envoyé :</b> jeudi 4 août 2022 19:07<br>
<b>À :</b> <a href="mailto:sls-sea-dls@mailman.ccsds.org">sls-sea-dls@mailman.ccsds.org</a><br>
<b>Objet :</b> [Sls-sea-dls] SDLS Green Book issue 2 : final draft for review by the WG<o:p></o:p></p>
</div>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Dear SDLS WG member,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">As agreed at our last meeting, please find attached for review by the WG the final draft of the SDLS Core Protocol Green Book Issue 2 which includes various updates concerning :<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Addition of USLP as SDLS compatible data link protocol<o:p></o:p></span></p>
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<![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Reference to SDLS Extended Procedures for key and SA management<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Please provide your comments before end September so we can issue the WG resolution for publication of this document before our fall meeting.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Gilles Moury<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">CCSDS SDLS WG Chairman.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="line-height:115%"><b><span style="font-family:"Arial",sans-serif;color:#005191">Gilles MOURY<o:p></o:p></span></b></p>
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