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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Gian-Paolo,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I would simply add in the coordination section :<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="margin-left:27.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">with SEA for
<b><u>development</u></b>, adoption and integration of security-related recommended standards and practices;</span><span lang="EN-US">
</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">rationale : SDLS is a joint WG with SEA that develops security standards<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Gilles<br>
<br>
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Gilles MOURY</span><span style="color:#1F497D">
<br>
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">CNES Toulouse</span><span style="color:#1F497D">
</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">De :</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> sls-bounces@mailman.ccsds.org [mailto:sls-bounces@mailman.ccsds.org]
<b>De la part de</b> Enrico.Vassallo@esa.int<br>
<b>Envoyé :</b> jeudi 2 juillet 2015 11:15<br>
<b>À :</b> Gian.Paolo.Calzolari@esa.int<br>
<b>Cc :</b> sls-bounces@mailman.ccsds.org; SLS - Space Link Services Area<br>
<b>Objet :</b> Re: [SLS] Review of SLS Area Contents and Goals by 10 July<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">No change for RFM goal.</span>
<br>
<br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Enrico</span> <br>
<br>
<br>
<br>
<span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#5F5F5F">From: </span><span style="font-size:7.5pt;font-family:"Arial","sans-serif""><a href="mailto:Gian.Paolo.Calzolari@esa.int">Gian.Paolo.Calzolari@esa.int</a></span>
<br>
<span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#5F5F5F">To: </span><span style="font-size:7.5pt;font-family:"Arial","sans-serif"">"SLS - Space Link Services Area" <<a href="mailto:sls@mailman.ccsds.org">sls@mailman.ccsds.org</a>>,
</span><br>
<span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#5F5F5F">Date: </span><span style="font-size:7.5pt;font-family:"Arial","sans-serif"">02/07/2015 10:07</span>
<br>
<span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#5F5F5F">Subject: </span><span style="font-size:7.5pt;font-family:"Arial","sans-serif"">[SLS] Review of SLS Area Contents and Goals by 10 July</span>
<br>
<span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#5F5F5F">Sent by: </span><span style="font-size:7.5pt;font-family:"Arial","sans-serif""><a href="mailto:sls-bounces@mailman.ccsds.org">sls-bounces@mailman.ccsds.org</a></span>
<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
<br>
<br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Dear All,</span> <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<br>
CMC and CESG Chair has requested to review the Area contents (Area content tab) and goals in the CWE on-line strategic plan.</span>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
For SLS you can find this information here: </span><a href="http://cwe.ccsds.org/fm/sp/Lists/SLSContent/AllItems.aspx"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">http://cwe.ccsds.org/fm/sp/Lists/SLSContent/AllItems.aspx</span></a><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
and at the bottom of this mil for your convenience.</span> <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<br>
Keeping in mind that we have six goals (i.e. one per WG), can you please review the general description of SLS Area and (at least) the goal related to your WG?</span>
<br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
I think the contents below are quite stable and I would expect only minor changes (if any).</span>
<br>
<b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
I would appreciate receiving any comment by 10 July 2015.</span></b> <br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
Thank you all for the collaboration.</span> <br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
Gian Paolo</span> <br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
==================================</span> <b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
SPACE LINK SERVICES AREA</span></b> <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<br>
The objective of the SLS area is to address all of the point-to-point communications links and protocols that interconnect a spacecraft with its ground-support system, or with another spacecraft, by developing standards for efficient and reliable space link
communications systems addressing nominal as well as emergency scenarios. Specific attention is given by SLS to needs for higher data rates and better link performances, a standard security mechanism, and lower cost, mass, and power.</span>
<br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
SLS area objectives focus on Layers 1 & 2 (of the Open Systems Interconnection [OSI] protocol stack)—i.e., the Physical Layer and the Data Link Layer. This means that SLS concentrates in particular on radio-frequency and optical systems, modulation, synchronization
and channel coding, and data link protocols, for both long-haul (e.g., spacecraft-to-ground) and proximity links (e.g., orbiter-to-lander). Moreover SLS concentrates also on two additional functions essential on the space link: data compression for end-to-end
data transfer optimization, and ranging for accurate orbit determination.</span>
<br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
The SLS area needs to coordinate:</span> <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<br>
with CSS for the identification of relevant parameters for service management;</span>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
with CSS for the inner behavior (i.e., the implementation aspects and not the terrestrial interface characteristics) of the CSTS to be made available to other agencies;</span>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
with SEA for Delta-DOR issues;</span> <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<br>
with MOIMS and CSS if the need of standardized exchange of meteorological and orbital data will be required for optical communications;</span>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
with SEA for adoption and integration of security-related recommended standards and practices;</span>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
the SANA-recommended practices for registries and repositories.</span> <br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
The strategic goals of the SLS area are presented below.</span> <br>
<b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
SLS GOAL 1</span></b> <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<br>
Enable efficient bi-directional transmission for near-Earth spacecraft (including missions to—and/or orbiting around—the Moon and at Lagrange points) and deep-space spacecraft (especially Mars missions) by developing appropriate modulation schemes for
telecommand, telemetry, and ranging signals in the applicable frequency bands while providing narrower bandwidth and higher data returns.</span>
<br>
<b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
SLS GOAL 2</span></b> <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<br>
Produce efficient standards for coding schemes and synchronization, providing new generations of space missions with telecommand and telemetry capabilities beyond current technologies, such that spacecraft interconnection with its ground support system,
or with another spacecraft, can accommodate higher data rates and better link performances, together with lower cost, mass, and power.</span>
<br>
<b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
SLS GOAL 3</span></b> <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<br>
To provide efficient space data link protocols capable of satisfying the needs of current and future missions; i.e., to produce or maintain standards to support smoothly higher data rates with seamless interface to both user applications and communication
technologies over radio frequency (RF) and/or optical links.</span> <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<br>
<b><br>
SLS GOAL 4</b></span> <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<br>
Develop data compression standards enabling efficient data rates and volume reduction to maximize the usage of available space links bandwidth and onboard storage capacity. These internationally agreed data compression standards will foster interoperability
and multi-mission development of compression functions.</span> <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<br>
<b><br>
SLS GOAL 5</b></span> <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<br>
Provide security functions operating at Layers 1 & 2 (of the OSI protocol stack) of CCSDS space links. The targeted security services include authentication, integrity check, anti-replay, and confidentiality both for uplink and downlink. The corresponding
security protocols/functions shall be compatible with CCSDS TM, TC, and AOS data link protocols and be independent from any specific cryptographic algorithm. Develop associated management functions for monitoring and control, key and security association management.
Security at Physical Layer level should also be considered.</span> <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<br>
<b><br>
SLS GOAL 6</b></span> <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<br>
Establish a common framework of standardized services for space optical communications for interoperability and cross support by creating new standards for optical links (ISO Layers 1 & 2), taking into account the uniqueness of these types of links,
such as very high data rates, geographic station diversity, and atmosphere (“weather”) influences. Consider also the services to be offered/required to/by space data link protocols and relevant procedures. Finally, identify the needed coordination with other
CCSDS areas.</span> <br>
<br>
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