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<p class="MsoNormal">Looking at table C-1, it seems that there are two parameters related to SDA aggregation, size and time. If I understand this correctly, the problem with the current spec only applies when the LTP block is released because the SDA Aggregation
timer expires (if the size limit is reached, then no problem, the size of the block is already specified in Table C-1 and thus is a managed parameters known to the receiver). Is that the correct interpretation? If so, I am not sure we can simply say “that
the information needed to delimit the aggregated data units in the SDA structure is beyond the scope of the specification” because it is at least partially already in the specification MIB.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Maybe the solution is to add a note in 7.2.3.4.1.3 saying that implementations may find it useful to pad all LTP blocks released due to time limit reached with enough zeros to complete the LTP block size as specified in Table C-1? But does
that really solve the problem? How will the rx know when data ends and padding zeroes start…<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-----------------------------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal">Marc Sanchez Net (332H)<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:gray">Telecommunications Engineer</span><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;color:gray">Jet Propulsion Laboratory<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;color:gray">Cell:</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#222222"> </span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><a href="mailto:(617)%20953-7977"><span style="color:#0563C1">(617)
953-7977</span></a></span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#0070C0">
</span><span style="font-size:10.0pt;color:gray">|</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#0070C0">
</span><span style="font-size:10.0pt;color:gray">Email:</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#222222"> </span><span style="color:black"><a href="mailto:marc.sanchez.net@jpl.nasa.gov"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">marc.sanchez.net@jpl.nasa.gov</span></a></span><span style="font-size:9.5pt;font-family:"Arial",sans-serif;color:#222222"><o:p></o:p></span></p>
<p class="MsoNormal">-----------------------------------------------------------------------------------------------------------------------<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> SIS-DTN <sis-dtn-bounces@mailman.ccsds.org> <b>
On Behalf Of </b>sburleig.sb--- via SIS-DTN<br>
<b>Sent:</b> Wednesday, June 21, 2023 7:08 AM<br>
<b>To:</b> 'Keith Scott' <keithlscott@gmail.com>; 'Tomaso de Cola' <Tomaso.deCola@dlr.de><br>
<b>Cc:</b> sis-dtn@mailman.ccsds.org<br>
<b>Subject:</b> [EXTERNAL] Re: [Sis-dtn] Updates on LTPv2 Corrigendum and BPv7 RID database<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Right, I think it’s not that the specification is not interoperable, only that the nature of the client data units – including the information needed to delimit the aggregated data units in the SDA structure – is identified by the client
ID; that registration is beyond the scope of the specification.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Scott<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> SIS-DTN <<a href="mailto:sis-dtn-bounces@mailman.ccsds.org">sis-dtn-bounces@mailman.ccsds.org</a>>
<b>On Behalf Of </b>Keith Scott via SIS-DTN<br>
<b>Sent:</b> Wednesday, June 21, 2023 2:36 AM<br>
<b>To:</b> Tomaso de Cola <<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>><br>
<b>Cc:</b> <a href="mailto:sis-dtn@mailman.ccsds.org">sis-dtn@mailman.ccsds.org</a><br>
<b>Subject:</b> Re: [Sis-dtn] Updates on LTPv2 Corrigendum and BPv7 RID database<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Mmmm.... will try to find the right words. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> -keith<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, Jun 21, 2023, 10:48 AM <<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi Keith,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thank you for the summarized discussion on LTP-corrigendum.
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Just one consideration about SDA aggregation (point 7 in the list). The description seems to point about the fact that the current specification of the mechanism does not allow
interoperability because of the lack of information of the client data unit, which is I think agreed and well understood. I’d however try to find a “smarter” way to say this, since having a specification which has a non-interoperable feature will not be accepted
by CESG and this will cause endless iterations and discussions there before getting the green light.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Regards,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Tomaso<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="DE">Von:</span></b><span lang="DE"> SIS-DTN <<a href="mailto:sis-dtn-bounces@mailman.ccsds.org" target="_blank">sis-dtn-bounces@mailman.ccsds.org</a>>
<b>Im Auftrag von </b>Keith Scott via SIS-DTN<br>
<b>Gesendet:</b> Dienstag, 20. Juni 2023 18:35<br>
<b>An:</b> <a href="mailto:sis-dtn@mailman.ccsds.org" target="_blank">sis-dtn@mailman.ccsds.org</a><br>
<b>Betreff:</b> [Sis-dtn] Updates on LTPv2 Corrigendum and BPv7 RID database</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">LTP Corrigendum (from the telecon last Thursday):<o:p></o:p></p>
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<li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3">
Discussed the latest JPL collection of issues here (<a href="https://urldefense.us/v3/__https:/cwe.ccsds.org/sis/_layouts/15/WopiFrame.aspx?sourcedoc=*7bA52D5D6D-7A66-4CCD-AB61-B215AA2B8C36*7d&file=Draft*20LTP*20corrigendum*20-*20JPL*20edits*20(1).docx&action=default__;JSUlJSUlJSU!!PvBDto6Hs4WbVuu7!LCeuTfHRA-LEWR-KvEDLe0i6i_hNmJSv6s71tkiKsE8GF9G2WuONw5VgyJ3VhoHWAzOx4uoYfTZbeHQbcqsxLE9Ue77kmlg$" target="_blank">https://cwe.ccsds.org/sis/_layouts/15/WopiFrame.aspx?sourcedoc={A52D5D6D-7A66-4CCD-AB61-B215AA2B8C36}&file=Draft%20LTP%20corrigendum%20-%20JPL%20edits%20(1).docx&action=default</a>)<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3">
We definitely want a CORRIGENDUM (non-normative, no changes to the protocol) NOT a set of Pink sheets or a Pink Book (which would/could be normative and would require agency review). So, all proposed text should be in the form of non-normative suggestions
to implementers.<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3">
We discussed putting all of the proposed changes into a single location or spreading them throughout the document. The consensus was that it would be better for implementers to put the suggestions proximate to the places in the document that discuss the protocol
mechanisms (i.e. mixed throughout). Should ask Tom what he thinks of this...<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3">
Blue text in the document reflects the WG consensus on the telecon; we agreed that folks would propose final "copy-ready" text in green together with the location where that text should go.<o:p></o:p></li></ul>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Added the CNES RIDs to the spreadsheet.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> --keith<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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