[Sls-slp] FW: [EXTERNAL] Fw: CCSDS RFM WG Spring meeting - comments received on DDOR inputs - status as of 6 April - C&S proposal

[Marco.Rovatti at esa.int]

Dear Greg, 

Thank you for sharing the document. 
After a preliminary quick coordination within ESA, we would prefer to 
align the deadline for providing comments with the one set-up within C&S 
and RFM WGs (i.e. 4 September 2020). 

Best regards
Marco Rovatti



From:   "Kazz, Greg J\(US 312B\) via SLS-SLP" <sls-slp at mailman.ccsds.org>
To:     "Kazz, Greg J (US 312B) via SLS-SLP" <sls-slp at mailman.ccsds.org>
Cc:     "Enrico.Vassallo at esa.int" <Enrico.Vassallo at esa.int>, 
"Gian.Paolo.Calzolari at esa.int" <Gian.Paolo.Calzolari at esa.int>
Date:   19/05/2020 18:31
Subject:        [Sls-slp] FW: [EXTERNAL] Fw: CCSDS RFM WG Spring meeting - 
comments received on DDOR inputs - status as of 6 April - C&S proposal
Sent by:        "SLS-SLP" <sls-slp-bounces at mailman.ccsds.org>



Dear SLP WG,
 
Attached please find a Word document that contains proposed changes to the 
Shift register CRC diagrams in the AOS, TM, USLP, and Prox-1 CRC Space 
Data Link Protocol blue books.
These changes are proposed by NASA (see SLS_CS action item below). Please 
take some time to review the proposed changes and provide me with your 
comments. I would appreciate hearing back from you by the end of May if at 
all possible concerning those proposed changes to our diagrams.
 
Best regards,
Greg
Chairman SLP WG
 
From: "Enrico.Vassallo at esa.int" <Enrico.Vassallo at esa.int>
Date: Tuesday, May 19, 2020 at 2:49 AM
To: "sls-rfm at mailman.ccsds.org" <sls-rfm at mailman.ccsds.org>, "Border, 
James S (US 335D)" <james.s.border at jpl.nasa.gov>, "Volk, Christopher P (US 
335D)" <christopher.p.volk at jpl.nasa.gov>, "Kazz, Greg J (US 312B)" 
<greg.j.kazz at jpl.nasa.gov>, "Massimo.Bertinelli at esa.int" 
<Massimo.Bertinelli at esa.int>
Subject: [EXTERNAL] Fw: CCSDS RFM WG Spring meeting - comments received on 
DDOR inputs - status as of 6 April - C&S proposal
 
Dear All, 

I have not received any negative comments concerning the suggested way 
forward from April 6, which is therefore agreed by both RFM and DDOR WGs. 

Meanwhile, C&S WG discussed CS_20-03 and tentatively (minutes are still 
draft) agreed on the following action: 
SLS-CS_20-03(PN shift registers, NASA) 
NASA presented a proposal for the unification of the representation of the 
polynomial and diagrams representing PN shift registers in different CCSDS 
books (affecting also other WGs, e.g. RFM) 
AI_20_04 was given to the WG to report about the proposal, the possible 
need to have a similar standard representation and, in case, the preferred 
way forward. September was set as deadline for the action. 

I would suggest that we also agree on a similar action for the RFM WG with 
the same deadline. September would be compatible with the DDOR 
recommendation(s) agency review cycle. 

If I do not hear from you otherwise by Friday, I will enter such action in 
the draft minutes of the meeting held by correspondence. 

Incidentally, I would like to alert Greg that the SLP group should have a 
look at this NASA's input since it also proposes changes to 732.0-B-3  and 
732.1-B-1, which I believe are under SLP WG purview. I attached the input 
again for SLP convenience. 

Regards, Enrico 
 [attachment "SLS-CS_20-03 CCSDS books with PN patterns 4-19-20.docx" 
deleted by Marco Rovatti/estec/ESA] 
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