[Sls-slp] Re: Comments on lastest draft version of TC and AOS Space Data Link Protocols with SDLS
Kazz, Greg J (313B)
greg.j.kazz at jpl.nasa.gov
Wed Jun 26 19:00:42 UTC 2013
Dear SLP and SDLS WGS:
I have accepted the comments below from Ignacio and Marjorie and have made
the changes to TM, TC, and AOS Space Data Link Protocols.
The final versions (file names all ending in "final3") are now on the SLP
CWE under this tiny URL:
http://tinyurl.com/qdgws7m
At this point, based upon the agreement both SLP and SDSL WG have, I
recommend that the CCSDS Secretariat take these files and compose Pink
Sheets for Agency Review to occur before the Fall 2013 in San Antonio, TX,
USA.
The files with the history of changes (red lines) can be found in this CWE
directory with file names ending in ("with edits" or "with comments"):
http://tinyurl.com/qe92pv5
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)
------------------------------------------------------
On 6/26/13 5:52 AM, "Ignacio.Aguilar.Sanchez at esa.int"
<Ignacio.Aguilar.Sanchez at esa.int> wrote:
>Dear Greg,
>
>Please forward this e-mail to SLP distribution list.
>
>Finally I have had a chance to look at the 6 files you posted in CWE (see
>below).
>
>Marjorie had already look at them and identified the following minor
>editorial to which I concur. I quote her input:
>
>"My only comment is on the TC draft (with filename ending "Final2.doc"),
>and it concerns the Note at the end of section 6.4.2. The Note describes
>the checks performed by the All Frames Reception Function.
>
>The last two sentences of the Note say:
>"It is recommended that a frame that fails any of these checks is
>discarded. In particular, processing of frames failing verification is
>implementation specific and depends also on the processing capabilities
>of the service user for eventual forensic investigation."
>
>These two sentences should be replaced by a single sentence saying:
>"A frame that fails any of these checks is discarded."
>
>- Discarding a failed frame is the behaviour specified for the check
>procedures inside the All Frames Reception Function. So it is not just
>"recommended".
>
>- The Note is not about the frame verification (i.e. SDLS checks of the
>frame). So the sentence about "frames failing verification" is not
>appropriate in this Note. (And the paragraph immediately before the Note
>describes what happens when SDLS detects an error in a frame.)
>
>I know we (and Greg) dealt with a similar note in the AOS book, but this
>one still needs changing!"
>
>In addition I have found a minor editorial inconsistency on the way
>reference
>[8], which is the future SDLS Blue Book, is written down in TC, TM and
>AOS.
>In TM and AOS it says "November 2012". In TC it says "To be issued".
>I think the latter is the correct approach (not sure we can refer to Red
>Books instead!) but Tom should confirm.
>
>Kind regards,
>
>Ignacio & Marjorie
>
>
>|------------>
>| From: |
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> |"Kazz, Greg J (313B)" <greg.j.kazz at jpl.nasa.gov>
>
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> |"Ignacio.Aguilar.Sanchez at esa.int" <Ignacio.Aguilar.Sanchez at esa.int>
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>| Cc: |
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> |"sls-sea-dls at mailman.ccsds.org" <sls-sea-dls at mailman.ccsds.org>,
>"marjorie at delandelong.com" <marjorie at delandelong.com>,
>"sls-slp at mailman.ccsds.org" |
> |<sls-slp at mailman.ccsds.org>
>
> |
>
>>-------------------------------------------------------------------------
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>| Date: |
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> |10/06/2013 23:56
>
> |
>
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>| Subject: |
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>>-------------------------------------------------------------------------
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>>----|
> |Re: Comments on lastest draft version of TC and AOS Space Data Link
>Protocols with SDLS
> |
>
>>-------------------------------------------------------------------------
>>-------------------------------------------------------------------------
>>----|
>
>
>
>
>
>Dear Ignacio,
>
>Thanks for your and Marjorie's comments on the AOS Space Data Link
>Protocol concerning SDLS. I agreed with your comments and I have accepted
>them into the document. I have also resolved the open issues that Marjorie
>pointed out concerning the equivalent for the term, FDU in AOS as well as
>referencing the correct procedures in AOS.
>
>I invite everyone to take a look at the following documents that I have
>posted today to the CWE under the SLP WG.
>
>http://tiny.cc/zfbhyw
>
>This directory now contains 6 files. For each TM, AOS, TC there is a file
>with both the review comments and red lines turned on. There is also a
>so-called "final" or clean file for each of them, without any remarks,
>with comments accepted.
>
>I have updated TM based upon the agreed to updates and comments for AOS
>and checked the section reference numbers for correctness, since TM and
>AOS contain to some extent different services.
>
>I request that both SLP and SDLS review these documents by June 26, so
>that I can send the to Tom Gannett in order for him to produce pink sheets
>for agency review in time before the Fall 2013 meeting.
>
>Best regards,
>
>Greg
>
>
>------------------------------------------------------
>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)
>
>------------------------------------------------------
>
>
>
>
>
>On 6/4/13 11:07 PM, "Ignacio.Aguilar.Sanchez at esa.int"
><Ignacio.Aguilar.Sanchez at esa.int> wrote:
>
>>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)
>>
>>
>>|------------>
>>| From: |
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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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>>|------------>
>>| Cc: |
>>|------------>
>>
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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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>>
>
>[attachment "default.xml" deleted by Ignacio Aguilar Sanchez/estec/ESA]
>
>
>
>This message and any attachments are intended for the use of the
>addressee or addressees only. The unauthorised disclosure, use,
>dissemination or copying (either in whole or in part) of its content is
>not permitted. If you received this message in error, please notify the
>sender and delete it from your system. Emails can be altered and their
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>Please consider the environment before printing this email.
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