[Sls-sea-dls] results of CESG poll for SDLS BB publication

[Ignacio.Aguilar.Sanchez at esa.int]

Dear Gilles and colleagues,

I believe the comment from Tomaso, supported by Keith, is easy to deal with
the inclusion of such note.

Concerning Peter's comments,

1) We all agreed and supported harmonisation of the SDLS with the SLPs, Part
of the agreement was the assumption that the potential user shall start
reading the SLPs before getting to the SDLS (since it is a NEW optional SLP
function). And we (SLP WG + SDLS WG) were very careful in deciding what to
put where. This can explain why the SDLS does not read so well stand-alone,
as Peter seems to want.
Including the three different scenarios (TC, TM, AOS) with corresponding
drawings into the SDLS will substantially  'inflate' the introduction.
 And will risk causing incoherency issues with the SLPs and the still-to-be
published SDLS Green Book.

I think the issue needs to be re-discussed with Peter since the drawings are
already at the documents where they are supposed to be.

2) The word 'payload' is mentioned 72 times in the document. The last mention
is in paragraph B1.1, which is perhaps the one that I can see somewhat
inconsistent but it should be easy to fix. Hence, I beg to disagree with
Peter concerning inconsistency in its use. A different thing is whether
another term could be used to avoid confusion with the classical meaning of
payload in space missions but I think the meaning in SDLS is pretty clear and
defined. On his proposals "package" looks too close to "packet" and "user
provided data" too close to "service data unit" (note that the 'payload' as
in SDLS context includes the SDU and something else, hence not a valid
substitute).

Unless someone finds a clear and unambiguous term to replace 'payload' in the
SDLS context, I would advocate to re-discuss the comment with Peter.


3) If the document has to be self-standing concerning its interpretation,
this is definitely a section that I think should stay. It is addressing a
core element of the SDLS. The Green Book will provide further elaboration but
a bare minimum is needed to be able to understand and interpret SDLS.

4) There are three NOTES covering this issue that are consistent. I think we
did not want to impose requirements in this subject, reason why they are
notes. But we could change it to requirements with the word 'may' to make
them more visible as suggested by Peter.

I hope the above helps.

Kind regards,

Ignacio



From:	Moury Gilles <Gilles.Moury at cnes.fr>
To:	"sls-sea-dls at mailman.ccsds.org" <sls-sea-dls at mailman.ccsds.org>
Date:	13/08/2015 11:01
Subject:	[Sls-sea-dls] results of CESG poll for SDLS BB publication
Sent by:	sls-sea-dls-bounces at mailman.ccsds.org



Dear CCSDS SDLS WG member,

Please find attached 2 files:

The results of the CESG poll (as of today – it terminates tomorrow)
The commented version of the SDLS Blue Book attached to the comments of Peter
Shames (SEA AD)

We have to respond to those comments and resolve them with the issuer before
we can actually publish the BB. Please advise on the way to respond to those
comments.

Best regards,

Gilles MOURY
SDLS WG Co-Chair
          =========================================================
                                Gilles MOURY
                                CNES Toulouse
                    Expert senior "Plateforme Satellite"
      Sous-Direction "Techniques Véhicule, Architecture & Intégration"
                           DCT/TV-RA  -  Bpi 1416
                          18, avenue Edouard Belin
                          F-31401 TOULOUSE Cedex 9
                             http://www.cnes.fr
                          tel : +33 (0)5 61 27 3790
                          fax : +33 (0)5 61 27 4099
                          sec : +33 (0)5 61 27 3882
                          mob : +33 (0)6 83 56 0485
          =========================================================


 [attachment "results CESG SDLS BB poll.docx" deleted by Ignacio Aguilar
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Ignacio Aguilar Sanchez/estec/ESA]
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