[Sls-slp] FW: 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 15:52:06 UTC 2013
Dear SLP,
Below please find comments from Ignacio and Marjorie below.
Greg
------------------------------------------------------
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
>
>
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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
> |
>
>>-------------------------------------------------------------------------
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>
>
>
>
>
>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)
>>
>>
>>|------------>
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>> |"Kazz, Greg J (313B)" <greg.j.kazz at jpl.nasa.gov>
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>> |
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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
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