UC [Sls-slp] Updated Prox-1 Data Link Layer book Now Available

Enrico.Vassallo at esa.int Enrico.Vassallo at esa.int
Wed Oct 26 10:07:58 UTC 2011


thanks for your inputs. Note that the deadline for input papers expired 
one week ago. Additionally, we have an internal ESA problem since the 
EXOMARS team did not deliver any request for changes to us.
I propose the following way forward:

1) With priority one we discuss in Boulder the changes necessary to align 
the 3 books for a mission starting today so that we eliminate the many 
inconsistencies we found. This can be done by looking at the inputs 
delivered in time for the meeting. 3 clean and correct books can be 
delivered at the end of the meeting.
2) With a view to integrating comments requesting additional capabilities 
(inputs from you and Greg, delivered late), we could dedicate the time 
that remains from activity 1and maybe generate a new set of drafts that 
should remain in the WG. By the next meeting, we can work out the internal 
ESA problems and check that EXOMARS is approved as we know it today (if 
the Russians come on board by next January, we may need to add additional 
non CCSDS standard modes......)

Given that the new features in 2 require independent verification as for 
CCSDS rules, I would recommend that we go ahead with agency review of the 
documents resulting from 1. In two years from now, we may be able to 
submit the documents initiated in 2 for an add-on review. There are too 
many problems with the current books to delay delivering corrected 
versions. One idea would be not to do an agency review but to call this 
delivery a corrigendum. In this case, we can have only one agency review 
once the new capabilities have been properly added and verified.

Let's discuss it in Boulder so as to avoid too many emails .....

Regards, Enrico

"Cosby Matthew" <MCOSBY at qinetiq.com>
<sls-slp at mailman.ccsds.org>
<Gian.Paolo.Calzolari at esa.int>, <Enrico.Vassallo at esa.int>, "Kazz, Greg J 
\(313B\)" <greg.j.kazz at jpl.nasa.gov>
26/10/2011 11:41
RE: UC [Sls-slp] Updated Prox-1 Data Link Layer book Now Available

Sorry for the delay?
I have now added a new document to the CWE ( http://tinyurl.com/3n9qx9r - 
same link as below) that contains the comments from UKSA on the P1 Data 
Link Layer. This has been done from the ExoMars lander point of view.
I have also added the document that has the proposed changes to the hail 
for Set V(R) ? which was presented in Berlin.
Matthew Cosby
Communications Engineering, Space Manpower
Tel: 01252 396313
email: mcosby at QinetiQ.com
QinetiQ - Delivering customer-focused solutions 
Please consider the environment before printing this email. 

From: sls-slp-bounces at mailman.ccsds.org [
mailto:sls-slp-bounces at mailman.ccsds.org] On Behalf Of Kazz, Greg J (313B)
Sent: 19 October 2011 19:50
To: sls-slp at mailman.ccsds.org
Cc: Gian.Paolo.Calzolari at esa.int; Enrico.Vassallo at esa.int
Subject: [Sls-slp] Updated Prox-1 Data Link Layer book Now Available
Dear SLS-SLP members,
Please find a new draft review version of the Prox-1 Data Link Layer 
recommendation in: (filename: Prox1 Data Link Oct 14 2011 includes ESA)
There are a few ESA comments that are pending resolution. You can find 
these and NASA comments concerning them in the same URL with filename:
Comments to ESA on DLL Oct 18
Best regards,
Greg Kazz
Chairman SLS-SLP WG
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