[Sls-slp] Fw: [Sls-sea-dls] Re: Comments on lastest draft version of TC and AOS Space Data Link Protocols with SDLS

Wed Jun 5 06:50:28 UTC 2013

Just preceding Greg in the forwarding.

Gian Paolo
----- Forwarded by Gian Paolo Calzolari/esoc/ESA on 05/06/2013 08:48 -----

From:
Ignacio.Aguilar.Sanchez at esa.int
To:
"Kazz, Greg J (313B)" <greg.j.kazz at jpl.nasa.gov>
Cc:
"sls-sea-dls at mailman.ccsds.org" <sls-sea-dls at mailman.ccsds.org>, 
marjorie at delandelong.com
Date:
05/06/2013 08:08
Subject:
[Sls-sea-dls] Re: Comments on lastest draft version of TC and AOS Space 
Data Link Protocols with SDLS
Sent by:
sls-sea-dls-bounces at mailman.ccsds.org

Dear Greg,

Please forward this e-mail as well to the SLP distribution list.

Following previous response to your e-mail below, Marjorie and I have both
reviewed  and discussed our findings on the AOS update.
Please find enclosed our amendments.

Kind regards,

Ignacio

(See attached file: AOS Space Data Link 
Protocol_732x0p21_June04_2013M2.docx)

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  |"Kazz, Greg J (313B)" <greg.j.kazz at jpl.nasa.gov>                |

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  |"sls-slp at mailman.ccsds.org" <sls-slp at mailman.ccsds.org>, 
"Ignacio.Aguilar.Sanchez at esa.int" <Ignacio.Aguilar.Sanchez at esa.int>    |

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  |"sls-sea-dls at mailman.ccsds.org" <sls-sea-dls at mailman.ccsds.org>         
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| Date:      |
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  |21/05/2013 01:42                         |

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  |Comments on lastest draft version of TC and AOS Space Data Link 
Protocols with SDLS            |

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Dear All,

I have responded to the edits and comments of both Marjorie and Ignazio 
based
upon their latest edits to the TC Space Data Link Protocol with SDLS.

Please see the following URL that contains proposed changes to both TC and
AOS. (TM will follow essentially the same types of changes as AOS, so 
after
we have consensus, I will modify TM.)

http://tinyurl.com/mo6m5sl

Your Figure 6-c Marjorie in the TC book is quite innovative. You have also
clearly identified all the processes and functions involved in the TC SDLS
case. Under the Notes in Section 6.3.7, I had to change the reference to
6.3.2 since the order of processing for SDLS does not follow Section 4.3.5
(which was correctly called out in the text of 6.3.2).

I decided not to include any figure such as 6c in the AOS book, simply
because the COP-1 is not an issue for AOS and we are only dealing with the
order of processing of the AOS functions and SDLS, which I believe is 
handled
easily with text. I added a section "Error Reporting" to discuss the
verification issues in lieu of the order of processing discussion in TC.

For both documents in Section 6.4.2, I softened the text to say that the
Virtual Channel Reception Fct will not deliver (in lieu of discard ) the
frame if SDLS reports an error. In my mind, I want to prohibit the 
function
from delivering the frame to the user, but not prohibit the capability for
future forensic analysis by a select group of analysts. I think this best
adresses Ignazio's concerns and questions. (Change also added to AOS).

Please let me know if the text for both TC and AOS is now consistent and
acceptable. If so, I will procede to make the changes to TM as well.

Best regards,

Greg
Chairman SLS-SLP WG
------------------------------------------------------
Greg Kazz
EEISE Group Supervisor
Systems Engineering Section (Section 313)
Jet Propulsion Laboratory
4800 Oak Grove Drive, Pasadena  CA 91109
MS 301-490
(818) 393-6529 (office)

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