<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<div class="" style="word-wrap:break-word; line-break:after-white-space">
<div dir="auto" class="" style="word-wrap:break-word; line-break:after-white-space">
Andrea,
<div class=""><br class="">
</div>
<div class="">Finally, an updated version of the TC Green Book is attached, in both .docx and .pdf formats (showing change tracking). The only change from the prior version, dated July 8, is that I reverted the modifications that were intended to address point
2. This means that Section 10.1 now reads the same as it did prior to the CESG poll, and I deleted references [8] and [9] again (which were cited in Section 10.1 as references for CFDP and LTP). As for change tracking, I took the time to accept each change
that was caused by Microsoft’s automatic renumbering. The result (I hope) is that the change tracking now shows all human-made edits since the CESG poll, in a readable way.</div>
<div class=""><br class="">
</div>
<div class="">I believe this completes our action with respect to the “Approve with Conditions” result from the CESG poll for publication, and these changes can now go back to Tom Gannett for one more update. After that, I don’t know if the CCSDS procedure
is to get Peter Shames’s concurrence (as the CESG member who imposed these conditions), or to repeat the full CESG poll, or whether it can now proceed to the CMC poll for publication.</div>
<div class=""><br class="">
</div>
<div class="">-Ken</div>
<div class=""><br class="">
</div>
<div class=""></div>
</div>
</div>
<div style="word-wrap:break-word; line-break:after-white-space">
<div dir="auto" style="word-wrap:break-word; line-break:after-white-space">
<div></div>
</div>
</div>
<div class="" style="word-wrap:break-word; line-break:after-white-space">
<div dir="auto" class="" style="word-wrap:break-word; line-break:after-white-space">
<div class=""><br class="">
<div><br class="">
<blockquote type="cite" class="">
<div class="">On Aug 19, 2021, at 6:46 AM, Andrea Modenini (external) <<a href="mailto:Andrea.Modenini@esa.int" class="">Andrea.Modenini@esa.int</a>> wrote:</div>
<br class="x_Apple-interchange-newline">
<div class=""><span class="" style="font-size:10pt; font-family:sans-serif">Dear Ken,</span>
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif"> following the comments we received, I believe we had WG consensus. All points are accepted, except 2).</span>
<br class="">
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">If you could please provide us an updated draft accordingly and then we can ask for a SLS AD resolution.
</span><br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">I guess it is sufficient to reject the edit in Section 10.1, but please let me know.</span>
<br class="">
<br class="">
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">Thanks in advance,</span>
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">Kind Regards</span>
<br class="">
<br class="">
<br class="">
<span class="" style="font-size:8pt; color:#808080; font-family:Verdana"><b class="">HE Space Operations for ESA - European Space Agency</b></span>
<br class="">
<span class="" style="font-size:8pt; color:#00a1e0; font-family:Verdana"><b class="">Ph.D. Andrea Modenini</b></span><span class="" style="font-size:8pt; color:#808080; font-family:Verdana"><b class=""><br class="">
Communication Systems & Technologies Engineer</b></span><span class="" style="font-size:12pt; font-family:Tms Rmn"><b class="">
</b></span><span class="" style="font-size:8pt; color:#808080; font-family:Verdana"><br class="">
TT&C and PDT Systems & Techniques Section (TEC-EST)<br class="">
RF Systems Division<b class=""><br class="">
ESTEC</b><br class="">
Keplerlaan 1, PO Box 299<br class="">
NL-2200 AG Noordwijk, The Netherlands</span><span class="" style="font-size:8pt; color:blue; font-family:Verdana"><u class=""><br class="">
</u></span><span class="" style="font-size:8pt; color:#808080; font-family:Verdana"><a href="mailto:andrea.modenini@esa.int" class="">andrea.modenini@esa.int</a> |
</span><a href="https://urldefense.us/v3/__http://www.esa.int/__;!!PvBDto6Hs4WbVuu7!cIc9E32LLHyMjJ-uo1Oqz86iETs6la0_4ahaNg3YU-oMMPxxVlmDEmHkS2d8i13z_KZP4EpP$" class=""><span class="" style="font-size:8pt; color:#8f8f8f; font-family:Verdana"><u class="">www.esa.int</u></span></a><span class="" style="font-size:8pt; color:#808080; font-family:Verdana"><br class="">
T +31 71 56 53439, M +31 6 484 56 527</span> <br class="">
<br class="">
<br class="">
<br class="">
<span class="" style="font-size:9pt; color:#5f5f5f; font-family:sans-serif">From: </span><span class="" style="font-size:9pt; font-family:sans-serif">Andrea Modenini/estec/ESA</span>
<br class="">
<span class="" style="font-size:9pt; color:#5f5f5f; font-family:sans-serif">To: </span><span class="" style="font-size:9pt; font-family:sans-serif">"Space Link Coding & Synchronization Working Group" <<a href="mailto:sls-cc@mailman.ccsds.org" class="">sls-cc@mailman.ccsds.org</a>></span>
<br class="">
<span class="" style="font-size:9pt; color:#5f5f5f; font-family:sans-serif">Date: </span><span class="" style="font-size:9pt; font-family:sans-serif">28-07-21 16:01</span>
<br class="">
<span class="" style="font-size:9pt; color:#5f5f5f; font-family:sans-serif">Subject: </span><span class="" style="font-size:9pt; font-family:sans-serif">[SLS-CC] CCSDS 230.1-G-2.1 - Green Book TC - approved with comments - please check deadline</span>
<br class="">
<hr noshade="" class="">
<br class="">
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">Dear colleagues,</span>
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif"> with reference to the Green Book of the TC, at CESG pool, we got an approval with conditions from SEA AD, with the feedback below.</span>
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">Following discussion with the SLS AD and DAD, it was decided to re-iterate such conditions at WG level.</span>
<br class="">
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">Kindly, Ken already took action to provide a draft of the TC Green Book implementing such edits (see attachment).</span>
<br class="">
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">I myself reviewed the comments:
</span><br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">-Point 3, 4, and 5, look normal editorials.</span>
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">-point 1) is about including USLP. This appear in line with the Blue Book review that we had recently</span>
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">-point 2) implies instead the introduction of CFDP and LTP for TC. Personally I am not aware that we had any discussion/input in the WG for allowing the use of such protocols for TC, nor I see any
content in the BlueBook. </span><br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">If this is the case, my personal opinion would be to discard this last point.</span>
<br class="">
<br class="">
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">Starting from this, could you please assess my conclusions and let me know any disagreement no later than
<b class="">13rd August EOB</b>?</span> <br class="">
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">In case deadline <b class="">
<u class="">does not fit</u></b> because of planned vacation, please also let me know that I will consider an extension.</span>
<br class="">
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">Kind Regards</span>
<br class="">
<br class="">
<br class="">
<br class="">
<br class="">
<span class="" style="font-size:10pt; font-family:sans-serif">----</span> <br class="">
<br class="">
<p class="" style="margin-top:0px; margin-bottom:10px"><span class="" style="font-size:10pt; font-family:Segoe UI"><i class="">It's great that this doc is now being updated, given all of the changes in the C&S WG and other SLS standards. I identify the following
Issues:</i></span></p>
<p class="" style="margin-top:0px; margin-bottom:10px"><span class="" style="font-size:10pt; font-family:Segoe UI"><i class="">1) There is no mention of USLP, expecially in the variable length frame mode. Only TC is included. This must be fixed. Too many
sections to list.</i></span></p>
<p class="" style="margin-top:0px; margin-bottom:10px"><span class="" style="font-size:10pt; font-family:Segoe UI"><i class="">2) In sec 10.3.3.1 (and 10.3.3.4) the only option described for handling "long wait times" on deep space links is the repeat function.
However, equally viable methods are to use CFDP of even LTP to provide automated file or link layer reliability. These should be addressed.</i></span></p>
<p class="" style="margin-top:0px; margin-bottom:10px"><span class="" style="font-size:10pt; font-family:Segoe UI"><i class="">3) The term "CODEWORD", "Codeword", and "codeword" are all used, sometimes in the same sentence. They look different but apparently
mean the same thing. Provide some description of this early in the doc to avoid any possible confusion. Too many sections to list.</i></span></p>
<p class="" style="margin-top:0px; margin-bottom:10px"><span class="" style="font-size:10pt; font-family:Segoe UI"><i class="">4) In Glossary "codeword" is not really defined, just a reference is provided. Fix this. Also, both encoding and decoding definitions
only mention BCH, not LDPC. Please fix this throughout.</i></span></p>
<p class="" style="margin-top:0px; margin-bottom:10px"><span class="" style="font-size:10pt; font-family:Segoe UI"><i class="">5) There are many new scholarly references, which is fine. At least one, [27], appears to have no reference identified in the body
of the text. Please fix this.</i></span></p>
<br class="">
<br class="">
<span class="" style="font-size:8pt; color:#808080; font-family:Verdana"><b class="">HE Space Operations for ESA - European Space Agency</b></span>
<br class="">
<span class="" style="font-size:8pt; color:#00a1e0; font-family:Verdana"><b class="">Ph.D. Andrea Modenini</b></span><span class="" style="font-size:8pt; color:#808080; font-family:Verdana"><b class=""><br class="">
Communication Systems & Technologies Engineer</b></span><span class="" style="font-size:12pt; font-family:Tms Rmn"><b class="">
</b></span><span class="" style="font-size:8pt; color:#808080; font-family:Verdana"><br class="">
TT&C and PDT Systems & Techniques Section (TEC-EST)<br class="">
RF Systems Division<b class=""><br class="">
ESTEC</b><br class="">
Keplerlaan 1, PO Box 299<br class="">
NL-2200 AG Noordwijk, The Netherlands</span><span class="" style="font-size:8pt; color:blue; font-family:Verdana"><u class=""><br class="">
</u></span><span class="" style="font-size:8pt; color:#808080; font-family:Verdana"><a href="mailto:andrea.modenini@esa.int" class="">andrea.modenini@esa.int</a> |
</span><a href="https://urldefense.us/v3/__http://www.esa.int/__;!!PvBDto6Hs4WbVuu7!cIc9E32LLHyMjJ-uo1Oqz86iETs6la0_4ahaNg3YU-oMMPxxVlmDEmHkS2d8i13z_KZP4EpP$" class=""><span class="" style="font-size:8pt; color:#8f8f8f; font-family:Verdana"><u class="">www.esa.int</u></span></a><span class="" style="font-size:8pt; color:#808080; font-family:Verdana"><br class="">
T +31 71 56 53439, M +31 6 484 56 527</span> <br class="">
<br class="">
<pre class="">This message is intended only for the recipient(s) named above. It may contain proprietary information and/or
protected content. Any unauthorised disclosure, use, retention or dissemination is prohibited. If you have received
this e-mail in error, please notify the sender immediately. ESA applies appropriate organisational measures to protect
personal data, in case of data privacy queries, please contact the ESA Data Protection Officer (<a href="mailto:dpo@esa.int" class="">dpo@esa.int</a>).
</pre>
<span id="x_cid:394331D3-D7D1-42E9-BC0D-AE221025F3D5"><TC Green 2021July8.docx></span>_______________________________________________<br class="">
SLS-CC mailing list<br class="">
<a href="mailto:SLS-CC@mailman.ccsds.org" class="">SLS-CC@mailman.ccsds.org</a><br class="">
https://urldefense.us/v3/__https://mailman.ccsds.org/cgi-bin/mailman/listinfo/sls-cc__;!!PvBDto6Hs4WbVuu7!cIc9E32LLHyMjJ-uo1Oqz86iETs6la0_4ahaNg3YU-oMMPxxVlmDEmHkS2d8i13z_ClyRnNF$
<br class="">
</div>
</blockquote>
</div>
<br class="">
</div>
</div>
</div>
</body>
</html>