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

Wed Oct 26 15:24:15 UTC 2011

All,

I will make this email very short in the attempt to move us forward.

Enrico suggested: "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."

I agree the result of the Boulder meeting should be technical corrigendums of the PL, C&S, and DLL Prox-1 books.

Before these meetings, we need to agree what are the baseline documents for discussion at Boulder.

This is my understanding of our current baseline:

 1.  Physical Layer book – SLSRFM-11-19 published by Enrico in his email on Oct 6 – see attached.
 2.  C&S Sublayer book – SLS-RFM-11-20  published by Enrico in his email on Oct 6 – see attached.
 3.  DLL book -  Prox-1 Data Link Oct 25 2011 includes ESA – see attached. (most comprehesive and up to date version)

Note 3: Before today I did not realize that Enrico's version of DLL book on Oct 6 did not include NASA Electra team comments. Not sure why since we have been publishing these to distribution before any deadlines. Strongly recommend we start with number 3 document at the SLP meeting and resolve differences (published before in word file: Comments to ESA on DLL Oct 18 11. )

I hope we can all agree to these documents as the baseline set. I am sure we can resolve any differences of opinion at the meetings we have in these books.

We also need to make a decision at the Boulder meeting about if and when to add LDPC to the Prox-1 standard based upon the LDPC update to the the C&S book already provided before the deadline.

I am also in agreement that we should do our best to generate PINK SHEETS to the corrigendums we generate in Boulder to address the later breaking inputs.These are the ones that would go out to agency review based upon the timeline we agree to.

Best regards,

Greg

From: "Gian.Paolo.Calzolari at esa.int<mailto:Gian.Paolo.Calzolari at esa.int>" <Gian.Paolo.Calzolari at esa.int<mailto:Gian.Paolo.Calzolari at esa.int>>
Date: Wed, 26 Oct 2011 03:57:40 -0700
To: "Enrico.Vassallo at esa.int<mailto:Enrico.Vassallo at esa.int>" <Enrico.Vassallo at esa.int<mailto:Enrico.Vassallo at esa.int>>, Matthew Cosby <mcosby at qinetiq.com<mailto:mcosby at qinetiq.com>>
Cc: "Kazz, Greg J (313B)" <greg.j.kazz at jpl.nasa.gov<mailto:greg.j.kazz at jpl.nasa.gov>>, sls-slp <sls-slp at mailman.ccsds.org<mailto:sls-slp at mailman.ccsds.org>>
Subject: Re: UC [Sls-slp] Updated Prox-1 Data Link Layer book Now Available

I do agree with Enrico.

________________________________

  From: Enrico Vassallo
  Sent: 26/10/2011 12:07 CEDT
  To: "Cosby Matthew" <MCOSBY at qinetiq.com<mailto:MCOSBY at qinetiq.com>>
  Cc: Gian Paolo Calzolari; "Kazz, Greg J \(313B\)" <greg.j.kazz at jpl.nasa.gov<mailto:greg.j.kazz at jpl.nasa.gov>>; sls-slp at mailman.ccsds.org<mailto:sls-slp at mailman.ccsds.org>
  Subject: RE: UC [Sls-slp] Updated Prox-1 Data Link Layer book Now Available

Matt,

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 yearsfrom 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 reviewbut 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

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

________________________________

Greg,

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.

Matt.

Matthew Cosby
Communications Engineering, Space Manpower
Tel: 01252 396313
email: mcosby at QinetiQ.com<mailto:mcosby at QinetiQ.com>
www.QinetiQ.com<http://www.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> [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<mailto:sls-slp at mailman.ccsds.org>
Cc: Gian.Paolo.Calzolari at esa.int<mailto:Gian.Paolo.Calzolari at esa.int>; Enrico.Vassallo at esa.int<mailto: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)

http://tinyurl.com/3n9qx9r

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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