[SLS-CC] C&S - AI status for 131.0-B update

Mon Dec 18 19:50:16 UTC 2023

Dear WG,
Here an update for AI_23_09 and AI_23_10 (see table in email below).

AI_23_10 - symbol terminology. With the help of Victor, I reviewed the blue book and my proposal is to remove 'channel symbol' in favour of  'coded symbol',
Additionally, I spotted possible discrepancies about CADU, SMTF, codeblock terminology and their usage (some of them already noticed by NASA GSFC colleagues during Fall 2023), that I tried to fix.

For AI_23_09, I did not receive further comments beyond those of Goddard's folks in Fall 2023, so I provide just my comments, and I propose the AI for closure.

However, while reviewing 131.0-B, I thought about two additional changes, that I wish to discuss:

  1.  Given the new TF slicer, and recent new randomizer, should we maybe consider to make randomization mandatory (except for legacy system without TF slicing)?

  *   Notice that from practical perspective nothing changes wr.t.. current approach (backward compatibility of bypassing randomization is still guaranteed) but with the subtle difference that 'new' systems are obliged to use the randomization (and not anymore highly recommended). Such proposal was done already in past by NASA GSFC, and now it could be the chance that we make it finally mandatory while keeping backward compatibility.

  1.  Should we add a note that Transfer Frame lengths (for Uncoded, and CC, or with slicing) are limited to 2k and 65k octects, because of the FHP?

--> I noticed that the rationale of such limitation is not given in CCSDS. So it could be worth to add a Note about it (had a preliminary check with Greg and he is fine that we add it in our book)

For all points, you can find in attachment the word file, so that you can check more in details my proposals.

As way forward, before Ken/Jorge go ahead in their AI_23_11 to update the 131.0-B accordingly, I poll the WG about:

  1.  Letting me know if there is any objections/doubts about the terminology proposal (or if you spot any additional discrepancy).
  2.  Letting me know your preference (possibly per Agency or Agency's site) about
     *   making randomization mandatory (with the exception of legacy systems w/o slicing), OR
     *   keeping it as optional when no slicing is adopted, mandatory otherwise (as it is right now);
  3.  Letting me know if there is any objection in adding a Note that 2k and 65k TF lengths are due to the FHP.

For giving everybody enough time, taking into account possible winter breaks, I propose as deadline January 26th.

In case of objections/doubts, feel free to raise the interest in having a dedicated WG Telco for better discussing the points above

Regards

Ph.D. Andrea Modenini
TT&C Communications Systems Engineer
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
European Space Agency, ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int<mailto:andrea.modenini at esa.int> | www.esa.int<http://www.esa.int/>
T +31 6 484 56 527

From: Andrea Modenini
Sent: Monday, December 4, 2023 12:47 PM
To: sls-cc at mailman.ccsds.org
Subject: C&S - AI status for 131.0-B update

Hi all,
Kind reminder (also for myself) for the AIs below:

[cid:image001.png at 01DA2DE2.1B8D39F0]

For AI_23_09, if no more comments are expected, I will close the AI (let me know otherwise).

For AI_23_10, I inform that I am late, apologies for that. I will do my best to complete within December

Regards,
Andrea

Ph.D. Andrea Modenini
TT&C Communications Systems Engineer
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
European Space Agency, ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int<mailto:andrea.modenini at esa.int> | www.esa.int<http://www.esa.int/>
T +31 6 484 56 527

From: Andrea Modenini
Sent: Tuesday, November 28, 2023 1:24 PM
To: sls-cc at mailman.ccsds.org<mailto:sls-cc at mailman.ccsds.org>
Subject: RE: C&S draft MoM

Hi all,
Please find in attachment the C&S MoM, final version.
I received no comments, so I simply updated the list of AIs in annex stemming from joints (see RFM MoM), and updated the status of the VCM green book potential project.

In case you should have residual comments, just give a holler, otherwise I will upload them in CWE

Regards

PS: thanks again Dennis for covering joint meetings

Ph.D. Andrea Modenini
TT&C Communications Systems Engineer
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
European Space Agency, ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int<mailto:andrea.modenini at esa.int> | www.esa.int<http://www.esa.int/>
T +31 6 484 56 527

From: SLS-CC <sls-cc-bounces at mailman.ccsds.org<mailto:sls-cc-bounces at mailman.ccsds.org>> On Behalf Of Andrea Modenini via SLS-CC
Sent: Wednesday, November 1, 2023 5:04 PM
To: sls-cc at mailman.ccsds.org<mailto:sls-cc at mailman.ccsds.org>
Subject: [SLS-CC] C&S draft MoM

Dear C&S WG,
Thanks again for your availability in hosting the C&S meeting remotely.

You can find enclosed the draft MoM.
Notice that I have already provided in yellow some placeholders that needs to be confirmed/phrased after physical meetings in The Hague.

If you can review the MoM and let me know if you have comments no later than November 20th COB.

Regards

Ph.D. Andrea Modenini
TT&C Communications Systems Engineer
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
European Space Agency, ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int<mailto:andrea.modenini at esa.int> | www.esa.int<http://www.esa.int/>
T +31 6 484 56 527

From: Andrea Modenini
Sent: Friday, October 20, 2023 2:37 PM
To: sls-cc at mailman.ccsds.org<mailto:sls-cc at mailman.ccsds.org>
Subject: RE: inputs for Fall 2023 meetings now available

Obviously I can't write an email without remarking my clumsiness: I meant inputs 14 and 15

Ph.D. Andrea Modenini
TT&C Communications Systems Engineer
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
European Space Agency, ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int<mailto:andrea.modenini at esa.int> | www.esa.int<http://www.esa.int/>
T +31 6 484 56 527

From: SLS-CC <sls-cc-bounces at mailman.ccsds.org<mailto:sls-cc-bounces at mailman.ccsds.org>> On Behalf Of Andrea Modenini via SLS-CC
Sent: Friday, October 20, 2023 2:34 PM
To: sls-cc at mailman.ccsds.org<mailto:sls-cc at mailman.ccsds.org>
Subject: Re: [SLS-CC] inputs for Fall 2023 meetings now available

I confirm now that all inputs are in CWE, ready to be downloaded.
Notice that SLS-CS_23-13 and SLS-CS_23-15 were merged into a single one, since referring to a single book.

Thanks all for providing the inputs timely, especially considering the busy period.

See you on October 30th, remotely.

Andrea

PS: reminder that we plan to have the full C&S meeting on October 30th, while October 31st is just for back-up in case we run late.

Ph.D. Andrea Modenini
TT&C Communications Systems Engineer
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
European Space Agency, ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int<mailto:andrea.modenini at esa.int> | www.esa.int<http://www.esa.int/>
T +31 6 484 56 527

From: SLS-CC <sls-cc-bounces at mailman.ccsds.org<mailto:sls-cc-bounces at mailman.ccsds.org>> On Behalf Of Andrea Modenini via SLS-CC
Sent: Thursday, October 19, 2023 1:41 PM
To: sls-cc at mailman.ccsds.org<mailto:sls-cc at mailman.ccsds.org>
Subject: [SLS-CC] inputs for Fall 2023 meetings now available

Dear all,
By means of this email please be informed that inputs for Fall 2023 meetings are available on https://tinyurl.com/CCSDS2023Fall
(don't forget to login in CWE in the upper-right corner, otherwise you will see an empty folder)

There is still one input missing, but deadline is COB, so it is expected by tomorrow,

Regards
Andrea

Ph.D. Andrea Modenini
TT&C Communications Systems Engineer
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
European Space Agency, ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int<mailto:andrea.modenini at esa.int> | www.esa.int<http://www.esa.int/>
T +31 6 484 56 527

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