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<p class="MsoNormal">Dear SLP WG,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In preparation for our Spring 2024 SLP WG meetings in Washington D.C., I’d like you all to review the updates I have made to 3 documents (URL below) concerning the update of Prox-1 (CCSDS 211.0-B) for lunar proximity operations.<o:p></o:p></p>
<p class="MsoNormal">The updates include a description in Prox-1 of the link negotiation procedure, i.e., the query/response mechanism for settling on the physical parameters used on the working channel. There have been several meetings taking place between
the lunar proximity-1 implementors on the lander and orbiter sides, in which they have provided feedback to CCSDS.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The 3 documents are:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Default Session Access Control Parameters: Settings for hailing at UHF and S-band<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Lunar Prox1 directives: Building from what we learned at Mars and encorporating for example the link negotiation mechanism of Query/Response.<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Updated Prox-1 (CCSDS 211.0-B) which adds the link negotiation mechanism (which was only mentioned before), along with the directives for lunar ops.<o:p></o:p></li></ol>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">You will be familiar with most of this material in these 3 documents since we have been discussing it for several meetings. In concern with our work, we will also see updates from the RF&MOD WG on the CCSDS 211.1-B Physical Layer Prox-1
BB and the CCSDS 211.2-B ….Prox-1 C&S blue book as well from the C&S WG.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I will call a teams meeting to discuss the current status of these documents so all can be informed before we hold our SLP WG and joint meetings in April/May.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">URL:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><a href="https://cwe.ccsds.org/sls/docs/Forms/AllItems.aspx?RootFolder=%2Fsls%2Fdocs%2FSLS%2DSLP%2FMeeting%20Materials%2F2024%2FSpring%2FProx%2D1%20Lunar%20Ops&FolderCTID=0x012000439B56FF51847E41B5728F9730D7B55F&View=%7BAE8FB44C%2DE80A%2D42CF%2D8558%2DFB495ABB675F%7D">https://cwe.ccsds.org/sls/docs/Forms/AllItems.aspx?RootFolder=%2Fsls%2Fdocs%2FSLS%2DSLP%2FMeeting%20Materials%2F2024%2FSpring%2FProx%2D1%20Lunar%20Ops&FolderCTID=0x012000439B56FF51847E41B5728F9730D7B55F&View=%7BAE8FB44C%2DE80A%2D42CF%2D8558%2DFB495ABB675F%7D</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best regards,<o:p></o:p></p>
<p class="MsoNormal">Greg<o:p></o:p></p>
<p class="MsoNormal">Chair SLP WG<o:p></o:p></p>
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