[SLS-CC] Joint C&S/SLP

Fri Dec 6 08:16:12 UTC 2019

A brief update:

OID - the action on NASA/GSFC is closed. V. Sank confirmed the feasibility 
and the agreement (making the random pattern OID mandatory) is confirmed

USLP - the second action refers specifically to the concerns raised by 
Wolfgang Hell about "systematic retransmission" in section 4.2.10.8 of 
USLP with respect to 231.0
I'm sorry that my formulation in yesterday's notes was not clear.

Best regards,
Massimo

---------------------------------------------------
Massimo Bertinelli
Communication Systems Engineer
ESA/Estec

Tel. +31 (0)71 5653435
--------------------------------------------------

From:   Massimo.Bertinelli at esa.int
To:     brent.r.andres at nasa.gov, Enrico.Vassallo at esa.int, 
Gian.Paolo.Calzolari at esa.int, sls-cc at mailman.ccsds.org, 
sls-slp at mailman.ccsds.org
Date:   05/12/2019 18:33
Subject:        [SLS-CC] Joint C&S/SLP
Sent by:        "SLS-CC" <sls-cc-bounces at mailman.ccsds.org>

Dear all, 

a very brief summary of our discussion: 

- OID 
 Most of the participants agreed to make the proposal (OID random pattern) 
mandatory. 
 Participants from NASA/GSFC asked for more time to confirm (or not) the 
decision 
 The proposal, once agreed, will be anyway subject to Agency Review 
 AI (V. Sank): report NASA/GSFC position by end of December 12 

- TERMINOLOGY 
  G. Kazz/NASA presented a proposal to align the terminology (regarding 
re-transmission) of the protocol books (232.1-B-2 and 232.0-B-3) to that 
used in the coding 
  book (231.0-B) 
  G. P. Calzolari/AD stated that the change of terminology was not 
actually required, and proper referencing inside the protocol books would 
achieve the target. 
  This will translate in actions internal to the SLP WG and the issue, 
from the joint C&S/SLP point of view, is closed 

- USLP 
 G. Kazz/NASA presented the (limited) changes required in 231.0-B (TC 
coding book) in order to reference 732.1 (USLP), stating how USLP already 
foresees this service 
 It was agreed background underlying the actual need for this change 
(possibly linked to Lunar missions) will be provide. 
 Besides, it was agreed to provide material (presentation/paper...) to 
show how the use of USLP would not be detrimental 
 to the TC service 
AI (G. Kazz): provide rationale for the change 
 AI (G. Kazz): provide material about use of USLP with TC, showing 
compatibility 

---------------------------------------------------
Massimo Bertinelli
Communication Systems Engineer
ESA/Estec

Tel. +31 (0)71 5653435
-------------------------------------------------- 

__________________ 

Dear all, 

based on the results of the poll, we are going to have a first joint 
C&S/SLP discussion on the following topics on Thursday 5 December, 
starting at 4pm (CET). 

- introduction of OID random pattern 
- possible alignment of terminology in the TC books regarding 
retransmission 
- additionally, SLP would like to discuss adding USLP to the TC coding 
book and assessing its impact (other books are mentioned in the 
presentation, but agreement on these ones has already been reached) 

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