[Smwg] AI2018-0411014: Update Ref-Framework diagram and add to Interrecommendation...

Tue Oct 9 01:45:39 UTC 2018

Just as a datapoint, I will say that In the SN, scheduling of playbacks is a way to make sure that offline services don't impact simultaneous online services sharing the bandwidth of the ground network WAN links.  That network capacity is treated as a resource by the scheduling system.  There are potentially other ground resources that could have capacity constraints (e.g. I/O bandwidth of a disk array, etc) which might make it preferable to schedule offline services in some cases ... Though I would agree that it does seem counter-intuitive, and there are possibly other decent ways to deal with preventing impact to online services..

From: SMWG <smwg-bounces at mailman.ccsds.org> On Behalf Of Barkley, Erik J (3970)
Sent: Friday, October 5, 2018 6:30 PM
To: Marcin.Gnat at dlr.de; smwg at mailman.ccsds.org
Subject: Re: [Smwg] AI2018-0411014: Update Ref-Framework diagram and add to Interrecommendation...

Hello Marcin,

I think we have an additional item for the Berlin meetings - double check the updated reference framework.  I have included this on the agenda for Thursday morning of the meeting week.

Re your questions:

1)      "-  The Service Package has no reference to the Service Agreement (possibly it should have)"   Yes, I think it should.  And perhaps this is something to consider as optional in the common information entities magenta book. No doubt more discussion at the meetings in Berlin.

2)     -    "Simple Schedule does not include at the moment Offline Service Package, or?".  My preference would be to keep the off-line service packages out of the simple schedule definition. The rationale being that the notion of an off-line service package is frankly rather archaic by today's standards (the SSF is really about who is utilizing which aperture and not who is scheduling access to an archive - really I have to schedule access to an archive?).  I believe that if an implementation really needs to note that data retrieval/off-line service packages are scheduled that can be accommodated by adding an appropriate implementation unique extension parameter or parameters but I don't think there is really a widely supported business case here.  Perhaps yet more discussion in Berlin :)

Best regards,
-Erik

From: SMWG <smwg-bounces at mailman.ccsds.org<mailto:smwg-bounces at mailman.ccsds.org>> On Behalf Of Marcin.Gnat at dlr.de<mailto:Marcin.Gnat at dlr.de>
Sent: Thursday, September 27, 2018 04:46
To: smwg at mailman.ccsds.org<mailto:smwg at mailman.ccsds.org>
Subject: [Smwg] AI2018-0411014: Update Ref-Framework diagram and add to Interrecommendation...

Dear All,

I worked out new FW-references. This is something one calls major rework, I suppose.
Should fit to the current status of our Information Entities. There are two points which came to me when doing:

-          The Service Package has no reference to the Service Agreement (possibly it should have)

-          Simple Schedule does not include at the moment Offline Service Package, or?

Aside, I used some coloring, to group the entities (grey - offline, orange/red - online related, blue - planning and green reporting).

Please have a look at the updated diagram below:
[cid:image001.png at 01D45F50.3690AAE0]
Also I have uploaded new Interrecommendation Worksheet (which btw. includes newest State Machines as well):
https://cwe.ccsds.org/css/docs/CSS-SM/CWE%20Private/Administration/Inter%20Recommendation/InterRecommdation%20Tracker-27-September-2018.xlsx

The Visio File for the Model itself:
https://cwe.ccsds.org/css/docs/CSS-SM/CWE%20Private/Administration/Inter%20Recommendation/Models/Referential%20FW%20Information%20Model/F5-1_InfoEntitiesReferenceFramework-180927.vsd

Best regards

Marcin Gnat

--------------------------
Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
German Aerospace Center
Space Operations and Astronaut Training | German Space Operations Center (GSOC) | Communications and Ground Stations
Oberpfaffenhofen, 82234 Wessling, Germany

Marcin Gnat | Team Leader Ground Data Systems
Telephone +49 (8153) 28 3201 | Telefax +49 (8153) 28 1456 | marcin.gnat at dlr.de<mailto:marcin.gnat at dlr.de>
www.DLR.de<http://www.dlr.de/>

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