1 19 September 2005 Space Link Services Area report to CESG Atlanta, Georgia, USA, 19 September 2005.

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Presentation transcript:

1 19 September 2005 Space Link Services Area report to CESG Atlanta, Georgia, USA, 19 September 2005

2 19 September 2005 SLS AREA REPORT CONTENTS A.CURRENTLY ACTIVE WGs AND BOFs WITHIN AREA B.SUMMARY TECHNICAL STATUS OF EACH WG & BOF C.INTRA & CROSS-AREA TECHNICAL ISSUES D.OTHER ISSUE AND CONCERNS E.PROPOSED AREA RESOLUTIONS / ACTION ITEMS

3 19 September SLS-RFM - RF & Modulation WG (*) 2.SLS-RNG – Ranging WG (*) 3.SLS-TCC – Telecommand Channel Coding WG 4.SLS-C&S – Coding & Synchronization WG 5.SLS-LEC - Long Erasure Codes BOF 6.SLS-SLP – Space Link Protocols WG 7.SLS-PROX – Proximity Links-1 Build-2 WG 8.SLS-HDRU – High Data Rate Uplink BOF 9.SLS-DC – Data Compression WG 10.SIS-IPCL – IP-over-CCSDS Links BOF (**) (*) did not meet in Atlanta, will meet 11/29  12/2 after SFCG (**) not in the area but dealing with space link interface A.LIST OF CURRENT WGs AND BOFs WITHIN AREA SLS AREA REPORT

4 19 September 2005 SLS-TCC: Telecommand Channel Coding WG Goal: Development of a Telecommand Channel Coding Green Book. Working Group Status: Active Working Group Summary Situation: Working Group Summary progress:  Green Book finalized.  Rids to BB 231 processed – Agreed to ask Technical Corrigendum instead of Pink Sheets (Change previous resolution on the subject) status:OKCAUTIONPROBLEM comment: Good progress SLS AREA REPORT

5 19 September 2005 SLS-C&S: Coding & Synchronization WG (1) Goal : - Issue TM Channel Coding GB - Issue new codes experimental (orange) book(s) Working Group Status: Active Working Group Summary Situation: Working Group Summary progress :  See next slide status:OKCAUTIONPROBLEM comment:X SLS AREA REPORT

6 19 September 2005 SLS-C&S: Coding & Synchronization WG (2) Telemetry Channel Coding Green Book prepublication version provided by secretariat. A few minor changes agreed in this meeting (old resolution existed covering publication of GB) Orange Book on GSFC LDPC Codes: Book was discussed, update to be performed according to comments received. Ready to be published. Orange Book on JPL LDPC Codes: No update provided. Previous version considered “Ready for publication” by JPL NASA official decision awaited w.r.t. the number of orange books (1 or 2) to be published Orange Book on ESTEC SCCC: Initial Draft provided. Report on Requirements from (closed) New Codes BOF presented. No further progress made towards a common set of requirements SLS AREA REPORT

7 19 September 2005 SLS-LEC: Long Erasure Codes (‘tornado codes’) BOF Goal: Make, if conclusive, a proposal for the creation of a WG on application of long erasure-correction codes to CCSDS coms BOF Status : Active BOF Summary Situation: Working Group Summary progress:  NASA and ESA reports presented.  Draft Requirements for eventual WG identified (To Be Discussed).  Decision on creation of WG to be taken at Spring 2006 meeting.  Presentation to SDLP/MOIMS/SIS of LEC capabilities in spring 2006 foreseen to have feedback on mission scenarios & requirements. status:OKCAUTIONPROBLEM comment: work in progress SLS AREA REPORT

8 19 September 2005 SLS-Space Link Protocols WG Goal: Dispose AOS Frame Sequence counter extension RID to Pink Sheet. Discuss Encapsulation Header Pink Sheet (32-bit compatibility) Discuss RID on Prox-1 Data Link Layer Pink Sheet (Frame Prioritization) Pink Sheets to Space Link Identifiers Discussion on comments to Link Layer Green books BOF Status: Active X Idle ____ BOF Summary Situation: status:OKCAUTIONPROBLEM comment:Good progress SLS AREA REPORT

9 19 September 2005 SLS-Space Link Protocols WG (cnt’d) SLS-SLP Summary progress: JAXA RID to AOS Pink Sheet for Frame Sequence Counter Extension handled by using 4-bits from Signaling Field in Primary Header. Encapsulation Packet Pink Sheet requires further agency review CIS-Lunar requirements need to be evaluated Need for protocol ID extension? End destination addressing in encapsulation packet header ? Prox-1 Data link layer frame prioritization adjusted to prevent data starvation case on the forward link during an unbalance link condition – requires new pink sheet for agency review No RIDs to Space Link Identifiers – addition of Prox-1 well-known Port IDs and comments. Takahiro’s Space Packet Protocol GB requires review from SIS area SLS AREA REPORT

10 19 September 2005 SLS-SLP WG (cnt’d) Problems and Issues: Need to update Encapsulation Packet Pink Sheet to incorporate more Protocol IDs Need wider agency review of Encapsulation Packet Pink Sheet Need SIS area support for Space Packet Protocol GB SLS AREA REPORT

11 19 September 2005 Prox-1 Build-2 WG Goal: Provide a requirement in the Prox-1 Physical Layer for data rate stability: both short and long term Address the RID on the Frame Priority within the Data Link layer of Proximity-1 Develop Proximity links GB WG Status: Active X Idle ____ WG Summary Situation: status:OKCAUTIONPROBLEM comment:Good progress SLS AREA REPORT

12 19 September 2005 Prox-1 Build-2 WG (cnt’d) WG Summary progress: Consensus on the value for the short and long term data rate stability requirements. Consensus on the modified frame prioritization rules. First draft of Proximity links GB discussed SLS AREA REPORT

13 19 September 2005 Prox-1-Build-2 WG (cnt’d) Resolutions : Request CESG to approve Pink Sheet P-2.1 Dec that establishes the data rate stability requirements for Prox-1 SLS AREA REPORT

14 19 September 2005 High Rate Uplink BOF Goal: Provide technical recommendations to the CIS-Lunar WG in the areas of RF&Modulation, Coding, and Link Layer protocols in support of the Lunar Exploration Missions. Address the high rate uplink requirements from the IOAG. BOF Status: Active X Idle ____ BOF Summary Situation : Convert to a WG in support of CIS-Lunar status:OKCAUTIONPROBLEM comment:Good progress SLS AREA REPORT

15 19 September 2005 High Rate Uplink BOF (cnt’d) BOF Summary progress: This BOF has provided a preliminary set of issues/requirements for the CIS-Lunar WG to respond to. The draft WG charter will be updated to become the WG charter (if approved by CESG) SLS AREA REPORT

16 19 September 2005 High Rate Uplink BOF (cnt’d) Problems and Issues: Without a focus on the RF, Coding, and Link layer problems of CIS- Lunar, the High Rate BOF’s problem domain would be too broad. Once the needs of the CIS-Lunar WG are understood better, a High Rate Uplink WG charter can be more definitively formulated. SLS AREA REPORT

17 19 September 2005 High Rate Uplink BOF (cnt’d) Planning : Deliver the WG Charter Sept.30, 2005 Participate in CIS-Lunar Telecons, On-going, SLS AREA REPORT

18 19 September 2005 High Rate Uplink BOF (cnt’d) Resolutions : Request CESG to enable the formation of the High Rate Uplink WG in support of the CIS-Lunar WG objectives in the areas of RF&Modulation, Coding & Synchronization, and Link Layer ; SLS AREA REPORT

19 19 September 2005 Data compression WG Goal: Specify an image compression algorithm fulfilling identified space mission requirements Develop a subsequent recommendation together with the supporting information (performances, usage, reference software, test data for compliance testing, …). Working Group Status: Active X Idle ____ Working Group Summary Situation: status:OKCAUTIONPROBLEM comment:Good progress SLS AREA REPORT

20 19 September 2005 Data compression WG (cnt’d) Working Group Summary progress: Red book issue 2 has been reviewed : 46 RIDS received and closed.  Update RB-2 with disposed RIDS and request for promotion to BB. Green book is being assembled; editing leadership has been split among WG members; major chapters completed.  Complete GB draft WG review and request approval from CESG Cross verification of recommendation near completion: 3 S/W under verification with 95% completion. Decision is to host JPL S/W at Open Channel S/W website which JPL has an agreement for open-source S/W. Compression needs and on-going work presented by ESA, CSA, CNES and NASA JPL.  Three topics for potential BOFs will be considered, only one will be chosen before next meeting. SLS AREA REPORT

21 19 September 2005 Data compression WG (cnt’d) Planning : Complete S/W cross-verification Oct., 2005 Issue BLUE BOOK, Oct., 2005 Complete GREEN BOOK draft Feb., 2006 Release reference S/W, March, 2006 Issue GREEN BOOK, April, 2006 Begin agency review of B-1: Lossless Data Compression Blue Book issued 1997 for either confirmation, update or retirement, March, 2006 Decision on new Compression BOF (SAR, Multi/Hyper- Spectral, New Lossless), April 2006 SLS AREA REPORT

22 19 September 2005 Data compression WG (cnt’d) Resolutions : Given successful review of RB-2, WG will request promotion to BB after final update WG will request area director to submit GB to CESG polling upon completion of the GB (04/2006) WG request creation of new BOF on subjects to be chosen among three topics: SAR data compression, Multi/Hyper- spectral data compression or new gener. lossless compression WG request area director to invite CESG members to report on agency needs in data compression. SLS AREA REPORT

23 19 September 2005 IP over CCSDS Links BOF Goals: Clearly articulate the need to transfer IPv4 and IPv6 datagrams over the four underlying internationally standardized CCSDS link layer protocols Describe the standard CCSDS options for carrying IP datagrams within those CCSDS frames, including the mode where those IP datagrams are encapsulated within a specific HDLC serial bit stream for interfacing with a COTS router. BOF Status: Active X Idle ____ BOF Summary Situation : There is consensus to form a WG status:OKCAUTIONPROBLEM comment:Good progress SLS AREA REPORT

24 19 September 2005 IP over CCSDS BOF (cnt’d) BOF Summary progress: This BOF has reviewed the Concept Paper i.e., draft White book towards the development of a Recommended Practice for how to guide the user in transferring IP over CCSDS links. The draft WG charter will be updated to become the WG charter SLS AREA REPORT

25 19 September 2005 IP over CCSDS Links BOF (cnt’d) Problems and Issues: Unclear if the Encapsulation Packet Header needs to be modified to include an End-Destination Address for CIS-Lunar. SLS AREA REPORT

26 19 September 2005 IP over CCSDS WG (cnt’d) Planning : Provide a WG Charter, Sept.30, 2005 Deliver CCSDS IP over CCSDS Recommended Practices White Book Oct 15, 2005 Participate in CIS-Lunar Telecons, On-going, SLS AREA REPORT

27 19 September 2005 IP over CCSDS Links BOF (cnt’d) Resolutions : Request CESG to enable the formation of the IP over CCSDS Links WG SLS AREA REPORT

28 19 September 2005 Cross-area technical issue Secure communications Need for secure RF&Mod recommended techniques ? Need for secure data link protocols ? Cislunar missions Input expected from Cis-lunar space internetworking WG - Services & performances expected from layers 1 & 2 - Critical as a starting point for high rate uplink WG SIS area Review by SIS of Space Packet Protocol GB needed Interaction with SIS needed on encapsulation packet definition - Protocol ID extension, end-destination address - Inclusion of “encapsulation packet” rec. in IP-over-CCSDS link charter Interpretation of APID - Old interpretation have been dropped in the restructuring of recommendations

29 19 September 2005 Other issues & concerns IOAG resolutions : Bandwidth efficient modulations High rate telecommand for lunar & planetary missions Delta-DOR ranging Security & authentication Launchers tracking & data acquisition Green Books review : No formal review apart from CESG polling Not enough attention from AD (due to short timeframe) resulting in inadequate cross-area validation of GB Other topics : General approval of CCSDS web site and CWE documents review and editing back on track

30 19 September 2005 Proposed area resolutions & action items Res 1 : request CESG to enable the creation of high rate uplink WG Res 2 : Request CESG to enable the formation of the IP over CCSDS Links WG Res 3 : Request CESG to trigger review of modified Pink Sheet to AOS “extension of VC frame counter” Res 4 : Request CESG to trigger review of Pink Sheet to Prox-1 Data Link Layer Res 5 : Request CESG approve Pink Sheet to Space Link Identifiers as is. Res 6 : Request CESG to approve Pink Sheet P-2.1 Dec that establishes the data rate stability requirements for Prox-1

31 19 September 2005 Proposed area resolutions & action items Res 7 : Given successful review of Image Compression RB-2, request CESG to approve Image Compression recommendation as a blue book after final update Res 8 : request creation (at next meeting) of new BOF on subjects to be chosen among three topics: SAR data compression, Multi/Hyper-spectral data compression or new general-purpose lossless compression Res 9 : Ask Technical Corrigendum for BB 231(TC channel coding & synchronization) instead of Pink Sheets Res 10 : request publication of TM Channel Coding GB Res 11 : request CESG approval of new codes Orange Book(s) from NASA.