[Moims-sc] [CCSDS] MAL Header - Optimization

[Dominik Marszk]

Fine with me. We usually used anything above 128 as "private" ids anyway.

Cheers,
Dominik

ESA - European Space Agency

Dominik Marszk
Data System Engineer
Applications and Robotics Data Systems Section (OPS-GDA)

ESOC - European Space Operations Centre
Robert-Bosch-Strasse 5, 64293 Darmstadt, Germany
dominik.marszk at esa.int<mailto:dominik.marszk at esa.int> | www.esa.int<http://www.esa.int/>
T +49 6151 902219

From: MOIMS-SC <moims-sc-bounces at mailman.ccsds.org> On Behalf Of Coelho, César via MOIMS-SC
Sent: 19 May 2023 16:30
To: moims-sc at mailman.ccsds.org
Subject: [Moims-sc] [CCSDS] MAL Header - Optimization

Dear SM&Cers,

I would like to propose an optimization in the MAL Headers.
Basically, to change the type of Service Area, Service, and Operation, to UOctet (range is 0 to 255):

Field
Type
Description
From
Identifier
Message Source
Authentication Id
Blob
Authentication Identifier of Message Originator
To
Identifier
Message Destination
Timestamp
Time
Message generation timestamp
Interaction Type
InteractionType
Interaction Pattern Type
Interaction Stage
UOctet
Interaction Pattern Stage
Transaction Id
Long
Unique to consumer
Service Area
UShort
Service Area
Service
UShort
Service
Operation
UShort
Service Operation
Service version
UOctet
Service version
Is Error Message
Boolean
'True' if this is an error message; else 'False'
Supplements
List<NamedValue>
Optional supplementary fields


This optimization also allows the Fully Qualified Short Form Part to be defined using a UInteger (4Bytes) instead of a ULong (8Bytes).
From:  Area Number (UShort - 2B), Area Version (UShort - 2B), Service Number (UShort - 2B), SFP (Short - 2B)
To: Area Number (UOctet - 1B), Area Version (UOctet - 1B), SFP (Short - 2B)

In terms of changes, this is easy to fix in the books, and also in the code.
Let me know if you disagree with this optimization.
If I receive no reply within the next 2 weeks, I will assume that you agree and I will update the book accordingly.

Best regards,
César Coelho


Dr. César Coelho
CGI Deutschland B.V. & Co. KG  | Space
Mornewegstr. 30 | 64293 Darmstadt | Germany
T: +49 173 54100 45 | email: cesar.coelho at cgi.com<mailto:cesar.coelho at cgi.com>

Unsere Pflichtangaben gemäß § 35a GmbHG / §§ 161, 125a HGB finden Sie unter de.cgi.com/pflichtangaben.

This message is intended only for the recipient(s) named above. It may contain proprietary information and/or protected content. Any unauthorised disclosure, use, retention or dissemination is prohibited. If you have received this e-mail in error, please notify the sender immediately. ESA applies appropriate organisational measures to protect personal data, in case of data privacy queries, please contact the ESA Data Protection Officer (dpo at esa.int).
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ccsds.org/pipermail/moims-sc/attachments/20230522/fb617578/attachment-0001.htm>