[Sls-sea-dls] FW: Does SDLS apply to USLP truncated transfer frame ?

[Kazz, Greg J (US 312B)]

From: "Kazz, Greg J (US 312B)" <greg.j.kazz at jpl.nasa.gov>
Date: Monday, October 26, 2020 at 10:44 AM
To: Moury Gilles <Gilles.Moury at cnes.fr>, "sls-sdls at mailman.ccsds.org" <sls-sdls at mailman.ccsds.org>
Cc: "Kazz, Greg J (US 312B) via SLS-SLP" <sls-slp at mailman.ccsds.org>
Subject: Does SDLS apply to USLP truncated transfer frame ?

Dear Gilles and SLDS WG,

SLP WG has a question regarding the application of the SDLS protocol to truncated USLP Transfer Frames.
These truncated frames are envisioned for very short length telecommands or forward link Proximity-1 link commanding. This frame type provides backward compatibility with TC hardware commands or immediate commands. These commands are typically 2 octets long. We envision the truncated USLP frame length to be between 8 and 32 octets.
The 8 octet case is for backward compatibility with short Telecommands. The 32 octet case is for the LDPC(512,256) codeblock case.
In that context, does it make sense for SDLS header and possibly SDLS trailer to apply to the USLP truncated frame.

The discussion of the proposed non-use of SDLS for truncated USLP frames is mentioned in Chapter 6, specifically  in Section 6.3.2. The definition of the truncated USLP frame is in Annex G of the attached draft document

SLS WG would like your opinion on this matter.

Best regards,
Greg Kazz
Chair SLP WG

From: SLS-SLP <sls-slp-bounces at mailman.ccsds.org> on behalf of Matthew Cosby <Matt.Cosby at Goonhilly.org>
Date: Monday, October 26, 2020 at 9:27 AM
To: "sls-slp at mailman.ccsds.org" <sls-slp at mailman.ccsds.org>
Subject: [EXTERNAL] [Sls-slp] Updated Book

All,

Here is the updated book from the working group today.

Regards, Matt.

Matthew Cosby
Chief Technology Officer
Goonhilly Earth Station Ltd
[cid:image001.jpg at 01D6AB8E.2FE26440]


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ccsds.org/pipermail/sls-sea-dls/attachments/20201026/97cd75f1/attachment-0001.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 26078 bytes
Desc: image001.jpg
URL: <http://mailman.ccsds.org/pipermail/sls-sea-dls/attachments/20201026/97cd75f1/attachment-0001.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 732x1b1_USLP_ALLchanges-20201022b_toWG-working-group-changes.docx
Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
Size: 563910 bytes
Desc: 732x1b1_USLP_ALLchanges-20201022b_toWG-working-group-changes.docx
URL: <http://mailman.ccsds.org/pipermail/sls-sea-dls/attachments/20201026/97cd75f1/attachment-0001.docx>
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: ATT00001.txt
URL: <http://mailman.ccsds.org/pipermail/sls-sea-dls/attachments/20201026/97cd75f1/attachment-0001.txt>