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<p class="MsoNormal"><span style="font-size:11.0pt">I’m sure it can but everyone has their own unidentified secondary header.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt">From:</span></b><span style="font-size:11.0pt"> Burleigh, Scott C (312B)
<br>
<b>Sent:</b> Sunday, April 22, 2018 9:16 AM<br>
<b>To:</b> Greenberg, Edward (312B) <Edward.Greenberg@jpl.nasa.gov>; sls-slp@mailman.ccsds.org; Jonathan.J.Wilmot@NASA.gov<br>
<b>Cc:</b> Lee Pitts <robert.l.pitts@nasa.gov><br>
<b>Subject:</b> RE: Call for Use Cases of Space Packet Protocol<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Ed, I think of the Space Packet as being the thing that the old Constellation project called a Data Exchange Message (DEM). I think it performs the same function in the stack, and I suspect that it could
easily carry all the same metadata that the DEM was supposed to carry.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Scott<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt">From:</span></b><span style="font-size:11.0pt"> Greenberg, Edward (312B)
<br>
<b>Sent:</b> Sunday, April 22, 2018 7:37 AM<br>
<b>To:</b> <a href="mailto:sls-slp@mailman.ccsds.org">sls-slp@mailman.ccsds.org</a>;
<a href="mailto:Jonathan.J.Wilmot@NASA.gov">Jonathan.J.Wilmot@NASA.gov</a><br>
<b>Cc:</b> Lee Pitts <<a href="mailto:robert.l.pitts@nasa.gov">robert.l.pitts@nasa.gov</a>><br>
<b>Subject:</b> Call for Use Cases of Space Packet Protocol<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There seems to be lots of new Use Cases for Space Packets then were considered in the original specification. For example:<o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoNormal" style="mso-list:l0 level1 lfo3">ESA has PUS<o:p></o:p></li><li class="MsoNormal" style="mso-list:l0 level1 lfo3">Space Station has its own secondary header<o:p></o:p></li><li class="MsoNormal" style="mso-list:l0 level1 lfo3">Orion is looking for a secondary header<o:p></o:p></li></ul>
<p class="MsoNormal">Originally the Space Packet was an envelope for data transferred over single link (includes tunneling), now the packet is being looked at for network data transfer, local onboard data transfer (including measurement broadcasting).
<o:p></o:p></p>
<p class="MsoNormal">It is possible that the role of the packet might change with the use of DTN bundles.<o:p></o:p></p>
<p class="MsoNormal">Just to take the broadest view: We currently have two forms of packets, should there be more or should even these be examined to determine if they should be blended into a new packet design.
<o:p></o:p></p>
<p class="MsoNormal"><span style="background:yellow;mso-highlight:yellow">Can we get each of you to send in your present and possibly desired Use Cases for our beloved Space Packet so that we could determine its future.</span>
<o:p></o:p></p>
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