[SLS-CC] [EXTERNAL] Fw: Agency review of CCSDS 231.0 - draft of dispositions

Wed Apr 28 08:30:59 UTC 2021

Dear Ken,
 for RID AM-01 and AM-02 it is fine with me your minor changes.
You can find the updated disposition.

For everybody else, kind reminder that deadline for comments is 3rd May.
If there will be no additional comments, I believe we can close the review 
by email

Regards

HE Space Operations for ESA - European Space Agency
Ph.D. Andrea Modenini
Communication Systems & Technologies Engineer 
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int | www.esa.int
T +31 71 56 53439

From:   "Andrews, Kenneth S (US 332B)" <kenneth.s.andrews at jpl.nasa.gov>
To:     "Andrea Modenini (external)" <Andrea.Modenini at esa.int>
Cc:     "Space Link Coding & Synchronization Working Group" 
<sls-cc at mailman.ccsds.org>
Date:   27-04-21 19:47
Subject:        Re: [EXTERNAL] [SLS-CC] Fw: Agency review of CCSDS 231.0 - 
draft of dispositions

Andrea, 

Sure enough, your email messages about RIDs to the “TC Coding” Blue Book 
did not reach me, or presumably the rest of the working group.  There were 
two more RIDs submitted by NASA (one by David Ni, one by John Pietras), 
but both are duplicates of the JAXA RID, which noted the error between 
“Sending” and “Receiving” in the captions of Figures 2-4 and 2-5.

John Pietras also noted that there’s an incorrect cross-reference in the 
document, though it's outside of the material covered by the RIDs.  In 
Section 2.2.3, the last sentence of the first paragraph currently says, 
“This is described in section 4.”  It should say, “This is described in 
section 5”.

I hadn’t seen your two RIDs before, but both look like good ideas to me. 
By preference, I’d change the wording of each of them slightly as follows, 
but I don’t feel strongly about it.

RID AM-01
I would change the “To:” text to be: 
When BCH coding is used, the Pseudo-Randomizer defined in this section is 
required unless the system designer verifies proper operation of the 
system if this Randomizer is not used. Its use is fixed for a Physical 
Channel and is managed (i.e., its presence or absence is not signaled but 
is known a priori by the receiver), per Table 8-2.
RID AM-02:
I would change the “To:” text to be:
6.3.1 The randomization shall be applied at the transmitting end, and it
When BCH coding is used with the Pseudo-Randomizer, randomization shall be 
applied only…
…
NOTES 
1        Requirements for randomization of fill data are specified in 
3.4.3 for BCH coding and 4.4.3 for LDPC coding.
2        Randomization for BCH coding is optional, and managed per Table 
8-2.

Thanks,

-Ken

On Apr 22, 2021, at 1:30 AM, Andrea Modenini (external) <
Andrea.Modenini at esa.int> wrote:

Dear all, 
 it occurred to me that the mailing list below was probably not received 
by everybody because of my mistake in selecting the 'bounces' email. 

In summary, for the Agency Review of CCSDS 231.0 "TC Synchronization and 
Channel Coding", we received the RIDs in attachment (1 SLS, 2 ESA, 1 
JAXA). 
From a quick review they all appear minor modifications. Hence I did a 
draft of dispositions, and I propose to agree them by correspondence 
instead of having a dedicated telco. 

In this respect, by no later than 3rd May EOB (PDT), please let me know if 
you have any issue with the proposed approach or the drafted dispositions. 

Thanks a lot and sorry for the mistake, 

Kind Regards 

NOTE: former discussion below is just provided for information. Please 
refer to the new deadline. 

HE Space Operations for ESA - European Space Agency 
Ph.D. Andrea Modenini
Communication Systems & Technologies Engineer 
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int | www.esa.int
T +31 71 56 53439 
----- Forwarded by Andrea Modenini/estec/ESA on 22-04-21 09:59 ----- 

From:        Andrea Modenini/estec/ESA 
To:        SLS-CC <sls-cc-bounces at mailman.ccsds.org> 
Cc:        Enrico Vassallo/esoc/ESA at ESA, Gian Paolo 
Calzolari/esoc/ESA at ESA, Massimo Bertinelli/estec/ESA at ESA 
Date:        12-04-21 18:07 
Subject:        Re: [SLS-CC] Agency review of CCSDS 231.0 - draft of 
dispositions 

Dear all, 
 please find in attachment a first draft of the dispositions for the 
Agency Review of CCSDS 231.0. 

In order to give enough time to everybody for the review, I suggest a 
deadline in about two weeks. 
Hence, please let me know if you don't agree with the dispositions no 
later than 28th April EOB (PDT) 

Kind Regards 
Andrea 

HE Space Operations for ESA - European Space Agency 
Ph.D. Andrea Modenini
Communication Systems & Technologies Engineer 
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int | www.esa.int
T +31 71 56 53439 

From:        Andrea Modenini/estec/ESA 
To:        SLS-CC <sls-cc-bounces at mailman.ccsds.org> 
Cc:        Enrico Vassallo/esoc/ESA at ESA, Gian Paolo 
Calzolari/esoc/ESA at ESA, Massimo Bertinelli/estec/ESA at ESA 
Date:        10-04-21 13:36 
Subject:        Re: [SLS-CC] Agency review of CCSDS 231.0 

Dear all, 
 I received no objections concerning the approach of drafting disposition 
by correspondence. 

I thus take action to provide a first draft of the disposition within this 
working week and distribute them to the WG for comments/edits. 

Regards 

HE Space Operations for ESA - European Space Agency 
Ph.D. Andrea Modenini
Communication Systems & Technologies Engineer 
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int | www.esa.int
T +31 71 56 53439 

From:        Andrea Modenini/estec/ESA 
To:        SLS-CC <sls-cc-bounces at mailman.ccsds.org> 
Cc:        Enrico Vassallo/esoc/ESA at ESA, Massimo Bertinelli/estec/ESA at ESA, 
Gian Paolo Calzolari/esoc/ESA at ESA 
Date:        01-04-21 17:23 
Subject:        [SLS-CC] Agency review of CCSDS 231.0 

Dear all, 
 with reference to the Agency Review of CCSDS 231.0 "TC Synchronization 
and Channel Coding", we received the RIDs in attachment (1 SLS, 2 ESA, 1 
JAXA). 

From a quick review they all appear minor modifications. Hence I would 
propose to draft dispositions by correspondence instead of having a 
dedicated telco. 

Please let me know if you have any issue with the proposed approach no 
later than 9th April EOB (PST). 

If I will receive no objections, I will then provide a first draft of 
dispositions for the WG assessment. 

Regards 

[attachment "231x0p31.RID_ESA.AM_v1.0.docx" deleted by Andrea 
Modenini/estec/ESA] [attachment "JAXA-PRA20-30 -1.txt" deleted by Andrea 
Modenini/estec/ESA] [attachment "231x0p31.RID_SLS_AD.v1.docx" deleted by 
Andrea Modenini/estec/ESA] 
HE Space Operations for ESA - European Space Agency 
Ph.D. Andrea Modenini
Communication Systems & Technologies Engineer 
TT&C and PDT Systems & Techniques Section (TEC-EST)
RF Systems Division
ESTEC
Keplerlaan 1, PO Box 299
NL-2200 AG Noordwijk, The Netherlands
andrea.modenini at esa.int | www.esa.int
T +31 71 56 53439 

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