From greg.j.kazz at jpl.nasa.gov Wed Dec 3 20:03:44 2014 From: greg.j.kazz at jpl.nasa.gov (Kazz, Greg J (312B)) Date: Wed, 3 Dec 2014 20:03:44 +0000 Subject: [Sls-slp] Changes to CCSDS 130.2-G-2 Space Data Link Protocols GB - update from London Meeting Message-ID: Dear SLP WG, I’ve placed the update to the FAQ section of CCSDS 130.2-G-2 on the CWE under the following URL for your review and comment: http://tiny.cc/cs5aqx I would like to receive all of your comments by Dec. 17 2014. The proposal is to make these changes to this green book coincident with the release of the SDLS protocol along with the changes already approved to the TM, TC, and AOS Blue Books. Best regards, Greg Chairman CCSDS SLS-SLP WG -------------- next part -------------- An HTML attachment was scrubbed... URL: From greg.j.kazz at jpl.nasa.gov Fri Dec 5 00:22:32 2014 From: greg.j.kazz at jpl.nasa.gov (Kazz, Greg J (312B)) Date: Fri, 5 Dec 2014 00:22:32 +0000 Subject: [Sls-slp] Draft SLS-SLP WG London Fall 2014 Meeting Minutes Message-ID: Dear SLP, Attached please find a word copy of the draft SLP WG minutes. Please email me your comments by Dec. 18. I’d like to publish the final minutes soon thereafter. Best regards, Greg Kazz Chairman CCSDS SLP WG -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: SLS_SLP_WG_Minutes_London_Fall_2014_Nov_Draft2.docx Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document Size: 526362 bytes Desc: SLS_SLP_WG_Minutes_London_Fall_2014_Nov_Draft2.docx URL: From greg.j.kazz at jpl.nasa.gov Fri Dec 19 21:59:43 2014 From: greg.j.kazz at jpl.nasa.gov (Kazz, Greg J (312B)) Date: Fri, 19 Dec 2014 21:59:43 +0000 Subject: [Sls-slp] Action Item from CMC to SLP WG Message-ID: Dear SLP members, I have received the following action item from the CCSDS today: Date: 24/11/2014 20:23 Subject: SLP-WG Action Item from London ________________________________ Below is the action item assigned to the SLP WG. Let me know if you want to send to Greg or if you want me to send to Greg directly. CMC-A-2014-11-19 The SLP WG is requested to do an analysis and create procedures (if applicable) for assigning SCIDs to multiple spacecraft (this is needed for V1 and V2 but most critical for V2). Provide recommendations to the Secretariat for forwarding to the CMC and SANA Steering Group. Action: SLP WG Due Date: 31 December 2014 Status: Open Obviously, we cannot nor do we need to meet the 31 Dec 2014 deadline. It is negotiable with the CMC. However, I want to bring this A.I. to your attention and explain it’s motivation. The main reason for this A.I. was a warning provided by SANA to the CMC after the London meeting that Version 2 SCIDs (AOS) may very well be exhausted within 6 months time. The number of "available “ V2 SCIDs is approx. 13%. The number of V1 SCIDs “available” meaning capable of being assigned is approx 27%. So the motivation is clear. What needs to be done? CMC wants a recommendation from us on the way forward. Apparently the wording in the A.I. referring to "assigning SCIDs to multiple spacecraft " had two origins: 1. Requests that are submitted for the same SCID for both type V1 and V2 SCIDs. 2. Requests that are submitted to assign SCIDs for more than one spacecraft (as in a constellation) So SLP WG needs to consider solutions to the problem of CCSDS running out of assignable SCIDs. Some immediate thoughts come to mind in how to increase the SCID assignment pool: * Short term: Have each agency poll it’s missions to return SCID assignments no longer in use. * Longer term: Adopt USLP which increases the size of the SCID to at least 13 bits and does away with multiple SCID assignments due to use (Telemetry, Telecommand, Proximity). I look forward to continuing this dialog with you after the holiday. Happy holidays to all ! Greg Chairman CCSDS SLS-SLP WG -------------- next part -------------- An HTML attachment was scrubbed... URL: From Gian.Paolo.Calzolari at esa.int Mon Dec 22 13:24:30 2014 From: Gian.Paolo.Calzolari at esa.int (Gian.Paolo.Calzolari at esa.int) Date: Mon, 22 Dec 2014 14:24:30 +0100 Subject: [Sls-slp] Action Item from CMC to SLP WG In-Reply-To: References: Message-ID: <30149_1419254684_54981B9C_30149_8_1_OF71A4ADEA.591FF21D-ONC1257DB6.003EBAC4-C1257DB6.0049A718@esa.int> Greg, clearly I do agree that the 31 December deadline is simply impossible and we should work this out in 2015 to finalize it before Spring 2015 Meetings in Pasadena. I think there are other two options to be explored. 1) checking with Agencies usage of "TEST SCID". I know some agencies liked to have for a spacecraft also a different ID to be used while testing on ground. As those SCID's are never flying, they might be reused too. Clearly this would need asking back either to CMC Delegates or (better?) to the SCID Representatives listed here http://sanaregistry.org/r/agency_representatives/agency_representatives.html 2) Determining an "escape ID" [e.g. SCID = 0 Hex or another value] that could be interpreted as a value to be detailed somewhere else e.g. in the secondary header or in some spare field, Clearly this should be an extreme resource.... BTW, the list is at http://sanaregistry.org/r/spacecraftid/spacecraftid.html Regards Gian Paolo From: "Kazz, Greg J (312B)" To: "sls-slp at mailman.ccsds.org" , Date: 19/12/2014 23:00 Subject: [Sls-slp] Action Item from CMC to SLP WG Sent by: sls-slp-bounces at mailman.ccsds.org Dear SLP members, I have received the following action item from the CCSDS today: Date: 24/11/2014 20:23 Subject: SLP-WG Action Item from London Below is the action item assigned to the SLP WG. Let me know if you want to send to Greg or if you want me to send to Greg directly. CMC-A-2014-11-19 The SLP WG is requested to do an analysis and create procedures (if applicable) for assigning SCIDs to multiple spacecraft (this is needed for V1 and V2 but most critical for V2). Provide recommendations to the Secretariat for forwarding to the CMC and SANA Steering Group. Action: SLP WG Due Date: 31 December 2014 Status: Open Obviously, we cannot nor do we need to meet the 31 Dec 2014 deadline. It is negotiable with the CMC. However, I want to bring this A.I. to your attention and explain it?s motivation. The main reason for this A.I. was a warning provided by SANA to the CMC after the London meeting that Version 2 SCIDs (AOS) may very well be exhausted within 6 months time. The number of "available ? V2 SCIDs is approx. 13%. The number of V1 SCIDs ?available? meaning capable of being assigned is approx 27%. So the motivation is clear. What needs to be done? CMC wants a recommendation from us on the way forward. Apparently the wording in the A.I. referring to "assigning SCIDs to multiple spacecraft " had two origins: 1. Requests that are submitted for the same SCID for both type V1 and V2 SCIDs. 2. Requests that are submitted to assign SCIDs for more than one spacecraft (as in a constellation) So SLP WG needs to consider solutions to the problem of CCSDS running out of assignable SCIDs. Some immediate thoughts come to mind in how to increase the SCID assignment pool: Short term: Have each agency poll it?s missions to return SCID assignments no longer in use. Longer term: Adopt USLP which increases the size of the SCID to at least 13 bits and does away with multiple SCID assignments due to use (Telemetry, Telecommand, Proximity). I look forward to continuing this dialog with you after the holiday. Happy holidays to all ! Greg Chairman CCSDS SLS-SLP WG_______________________________________________ Sls-slp mailing list Sls-slp at mailman.ccsds.org http://mailman.ccsds.org/mailman/listinfo/sls-slp This message and any attachments are intended for the use of the addressee or addressees only. The unauthorised disclosure, use, dissemination or copying (either in whole or in part) of its content is not permitted. If you received this message in error, please notify the sender and delete it from your system. Emails can be altered and their integrity cannot be guaranteed by the sender. Please consider the environment before printing this email. -------------- next part -------------- An HTML attachment was scrubbed... URL: From greg.j.kazz at jpl.nasa.gov Fri Dec 26 16:29:55 2014 From: greg.j.kazz at jpl.nasa.gov (Kazz, Greg J (312B)) Date: Fri, 26 Dec 2014 16:29:55 +0000 Subject: [Sls-slp] Final Minutes of SLS-SLP WG minutes from London Meeting Message-ID: Dear SLP WG, Attached please find the final minutes of the SLP WG meeting held in London on Nov 10-11, 2014. Best regards and happy new year! Greg Kazz Chairman CCSDS SLP WG -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: SLS_SLP_WG_Minutes_London_Fall_2014_Nov_Final.docx Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document Size: 527388 bytes Desc: SLS_SLP_WG_Minutes_London_Fall_2014_Nov_Final.docx URL: