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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">I am going to chime in on Felix’s second comment below on behalf of Rachel Dudukovich and mine’s conversation about the ppt.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">It would be good to include more 3GPP/WiFi nodes but in addition, build up a scenario with different sub-networks that are both DTN and non-DTN. That’s one of the things DTN is supposed to
help handle. By doing this there would be a lot of things to work out for the ground DTN gateways and such. For example, there would be different classes of nodes (gateway, edge nodes, etc). If you can create a picture encompassing it all that would be great!
Especially for network management and routing since we need to clearly show where the various decision-making elements take place.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Stephanie Booth<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none">From:</span></b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none"> SIS-DTN <sis-dtn-bounces@mailman.ccsds.org>
<b>On Behalf Of </b>Felix Flentge via SIS-DTN<br>
<b>Sent:</b> Friday, June 7, 2024 4:13 AM<br>
<b>To:</b> Tomaso.deCola@dlr.de<br>
<b>Cc:</b> sis-dtn@mailman.ccsds.org<br>
<b>Subject:</b> [EXTERNAL] [BULK] Re: [Sis-dtn] DTN Reference Scenarios<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<b><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:black;mso-ligatures:none">CAUTION:</span></b><span style="font-family:"Calibri",sans-serif;color:black;mso-ligatures:none">
</span><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:black;mso-ligatures:none">This email originated from outside of NASA. Please take care when clicking links or opening attachments. Use the "Report Message" button to report suspicious
messages to the NASA SOC.</span><span style="font-family:"Calibri",sans-serif;color:black;mso-ligatures:none">
</span><span style="font-family:"Calibri",sans-serif;mso-ligatures:none"><o:p></o:p></span></p>
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<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB">Hi Tomaso,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Please see my replies below.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB" style="mso-ligatures:none;mso-fareast-language:EN-GB">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-ligatures:none;mso-fareast-language:EN-GB">Felix<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:EN-GB">From:</span></b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:EN-GB">
<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a> <<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>>
<br>
<b>Sent:</b> Friday, June 7, 2024 9:44 AM<br>
<b>To:</b> Felix Flentge <<a href="mailto:Felix.Flentge@esa.int">Felix.Flentge@esa.int</a>><br>
<b>Cc:</b> <a href="mailto:sis-dtn@mailman.ccsds.org">sis-dtn@mailman.ccsds.org</a>;
<a href="mailto:Edward.Birrane@jhuapl.edu">Edward.Birrane@jhuapl.edu</a><br>
<b>Subject:</b> AW: DTN Reference Scenarios<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="DE" style="font-family:"Calibri",sans-serif">Hi Felix,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="DE" style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-family:"Calibri",sans-serif">thank you for sharing the slides presented yesterday.
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-family:"Calibri",sans-serif">Just three comments:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style="font-family:"Calibri",sans-serif"><span style="mso-list:Ignore">1)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-family:"Calibri",sans-serif">I see no mention of optical communications, while the lunar WG within IOAG was pointing to them too. Any reason for excluding them now from the picture?<br>
<br>
FF: At least Moonlight does not include optical trunk link (, yet) and the scenario seems complex enough for the time being.
<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style="font-family:"Calibri",sans-serif"><span style="mso-list:Ignore">2)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-family:"Calibri",sans-serif">The SOIS-WIR WG has been working on green and blue books about the communication solutions for in-situ planetary network, possibly resulting in the coexistence of 3GPP/WiFi solutions
with DTN-based ones. Is this also captured in the pictures you have put in your slides?<br>
<br>
FF: No, we have considered adding more nodes on surfaces but I think it does not considerably change the scenario (again, seems already complex enough). It would certainly be exciting to consider surface IP networks as well but I would keep this for later.<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style="font-family:"Calibri",sans-serif"><span style="mso-list:Ignore">3)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-family:"Calibri",sans-serif">As to where push information about all (and possibly other) DTN reference scenarios, let’s not forget that we have the CCSDS 734.0-G-1 “Rationale, Scenarios, and Requirements for
DTN in Space” which is since long (the document was published already in 2010) in our ToDo list for the 5-year review. Probably the material you provided in the slides could be further elaborated and expanded for a new version of that green book. In any case
it is probably now time to think how and when to start the 5-year review of that book (I know all our resources are on the blue and orange books, but that green book is really old and must be refreshed)<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">FF: Yes, I could imagine the scenarios ending up in the green book but I would like to finish the first version asap. Maybe we can have them yellow (‘yellow is the new green’) first just to have something to reference
to.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.75in"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-family:"Calibri",sans-serif">Just another point somehow correlated to scenarios: during the monthly telco between SIS and IETF DTN WG, it emerged that IETF would like to come up with a concept/white
paper about the challenges of space internetworking. Moreover, a first step would be to review and update RFC4838 which now contains some outdated content that should be revised. I add here Ed who can say a few words more on this point.<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-indent:.5in">FF: Indeed, I think that these scenarios are also relevant in this context as they may help to add some more realism to the general discussions. However, we should stress that the intention is more short-term and
still very agency-centric so this should not limit work on scalable solutions for large networks.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-family:"Calibri",sans-serif">Regards,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-family:"Calibri",sans-serif">Tomaso<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><b><span lang="DE" style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:DE">Von:</span></b><span lang="DE" style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:DE">
SIS-DTN <<a href="mailto:sis-dtn-bounces@mailman.ccsds.org">sis-dtn-bounces@mailman.ccsds.org</a>>
<b>Im Auftrag von </b>Felix Flentge via SIS-DTN<br>
<b>Gesendet:</b> Donnerstag, 6. Juni 2024 17:57<br>
<b>An:</b> Dr. Keith L Scott via SIS-DTN <<a href="mailto:sis-dtn@mailman.ccsds.org">sis-dtn@mailman.ccsds.org</a>><br>
<b>Betreff:</b> [Sis-dtn] DTN Reference Scenarios<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span lang="DE"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-GB">Dear All,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-GB">I have uploaded today’s presentation on DTN Reference Scenarios to CWE:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-GB"><a href="https://cwe.ccsds.org/sis/docs/SIS-DTN/Other%20Documents/DTN%20Reference%20Scenario/CCSDS%20DTN%20Scenarios.pptx?d=wf3b24c8d83344cf998bc7846fe279269">https://cwe.ccsds.org/sis/docs/SIS-DTN/Other%20Documents/DTN%20Reference%20Scenario/CCSDS%20DTN%20Scenarios.pptx?d=wf3b24c8d83344cf998bc7846fe279269</a><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-GB">Please let us know if you have any feedback (in particular, on the overall topologies – we need to fix them now for the next steps).<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-GB" style="mso-ligatures:none;mso-fareast-language:EN-GB">Regards,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-GB" style="mso-ligatures:none;mso-fareast-language:EN-GB">Felix<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-GB" style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:DE">This message is intended only for the recipient(s) named above. It may contain proprietary information and/or
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<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Calibri",sans-serif;mso-ligatures:none">This message is intended only for the recipient(s) named above. It may contain proprietary information and/or protected content. Any unauthorised disclosure,
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