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<p class="MsoNormal"><span style="color:#212121">Dear SLP WG,<o:p></o:p></span></p>
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<span style="color:#212121"> <o:p></o:p></span></p>
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<span style="color:#212121">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></span></p>
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<span style="color:#212121">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.<span class="apple-converted-space"> </span><o:p></o:p></span></p>
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<span style="color:#212121"> <o:p></o:p></span></p>
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<span style="color:#212121">The 3 documents are:<o:p></o:p></span></p>
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<span style="color:#212121"> <o:p></o:p></span></p>
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<span style="font-size:11.0pt">Default Session Access Control Parameters: Settings for hailing at UHF and S-band<o:p></o:p></span></li><li class="MsoListParagraph" style="color:#212121;margin-top:0in;margin-bottom:0in;">
<span style="font-size:11.0pt">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></span></li><li class="MsoListParagraph" style="color:#212121;margin-top:0in;margin-bottom:0in;">
<span style="font-size:11.0pt">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></span></li></ol>
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<span style="color:#212121"> </span><span style="color:#212121"><o:p></o:p></span></p>
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<span style="color:#212121">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></span></p>
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<span style="color:#212121"> <o:p></o:p></span></p>
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<span style="color:#212121">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></span></p>
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<span style="color:#212121"> <o:p></o:p></span></p>
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<span style="color:#212121">URL:<o:p></o:p></span></p>
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<span style="color:#212121"> <o:p></o:p></span></p>
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<span style="color:#212121"><a href="https://urldefense.us/v3/__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__;JSUlJSUlJSUlJSUlJSUlJSUl!!PvBDto6Hs4WbVuu7!M89B36zbQfzZZZT2d3_oXiSNLuI0L-nIYCm9Mx_jrRzpOP6ScTXlRXOz19tkKluC32lxVvmmuxsHpM-nTFDlsdV-E3Q8td8$" title="https://urldefense.us/v3/__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*2"><span style="color:#0078D7">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</span></a><o:p></o:p></span></p>
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<span style="color:#212121"> <o:p></o:p></span></p>
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<span style="color:#212121">Best regards,<o:p></o:p></span></p>
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<span style="color:#212121">Greg<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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