<font size=2 face="sans-serif">Sorry Keith but I am quite puzzled as the
mail you forward is not the mail I sent......</font>
<br><font size=2 face="sans-serif">I just said: Also to be said that
USLP is a little schizophrenic as sometimes it looks to saving bits and
sometimes emphasises that USLP framers are so long that it is not worth
saving bits :o)</font><font size=3> </font>
<br>
<br><font size=2 face="sans-serif">Regards</font>
<br>
<br><font size=2 face="sans-serif">Gian Paolo</font>
<br>
<br>
<br>
<br><font size=1 color=#5f5f5f face="sans-serif">From:
</font><font size=1 face="sans-serif">"Scott, Keith
L." <kscott@mitre.org></font>
<br><font size=1 color=#5f5f5f face="sans-serif">To:
</font><font size=1 face="sans-serif">"Gian.Paolo.Calzolari@esa.int"
<Gian.Paolo.Calzolari@esa.int>, "Tomaso.deCola@dlr.de"
<Tomaso.deCola@dlr.de></font>
<br><font size=1 color=#5f5f5f face="sans-serif">Cc:
</font><font size=1 face="sans-serif">"edward.greenberg@jpl.nasa.gov"
<edward.greenberg@jpl.nasa.gov>, "greg.j.kazz@jpl.nasa.gov"
<greg.j.kazz@jpl.nasa.gov>, "peter.m.shames@jpl.nasa.gov"
<peter.m.shames@jpl.nasa.gov>, "sls-slp@mailman.ccsds.org"
<sls-slp@mailman.ccsds.org></font>
<br><font size=1 color=#5f5f5f face="sans-serif">Date:
</font><font size=1 face="sans-serif">05/02/2016 15:39</font>
<br><font size=1 color=#5f5f5f face="sans-serif">Subject:
</font><font size=1 face="sans-serif">Re: [Sls-slp]
CCSDS definition of Protocol IDs</font>
<br>
<hr noshade>
<br>
<br>
<br><font size=2 face="Calibri">Is there a reason people don’t like:</font>
<br>
<br><font size=2 face="Calibri">TFDZ: 3 bits</font>
<br><font size=2 face="Calibri">Reserved: 5 bits</font>
<br><font size=2 face="Calibri">ProtoID: 8 bits</font>
<br><font size=2 face="Calibri">First Header pointer: 16 bits</font>
<br>
<br><font size=2 face="Calibri">?</font>
<br>
<br><font size=3 face="Calibri"><b>From: </b>Gian Calzolari <</font><a href=mailto:Gian.Paolo.Calzolari@esa.int><font size=3 color=blue face="Calibri"><u>Gian.Paolo.Calzolari@esa.int</u></font></a><font size=3 face="Calibri">><b><br>
Date: </b>Friday, February 5, 2016 at 8:03 AM<b><br>
To: </b>"</font><a href=mailto:Tomaso.deCola@dlr.de><font size=3 color=blue face="Calibri"><u>Tomaso.deCola@dlr.de</u></font></a><font size=3 face="Calibri">"
<</font><a href=mailto:Tomaso.deCola@dlr.de><font size=3 color=blue face="Calibri"><u>Tomaso.deCola@dlr.de</u></font></a><font size=3 face="Calibri">><b><br>
Cc: </b>Edward Greenberg <</font><a href=mailto:edward.greenberg@jpl.nasa.gov><font size=3 color=blue face="Calibri"><u>edward.greenberg@jpl.nasa.gov</u></font></a><font size=3 face="Calibri">>,
Greg Kazz <</font><a href=mailto:greg.j.kazz@jpl.nasa.gov><font size=3 color=blue face="Calibri"><u>greg.j.kazz@jpl.nasa.gov</u></font></a><font size=3 face="Calibri">>,
"Scott, Keith L." <</font><a href=mailto:kscott@mitre.org><font size=3 color=blue face="Calibri"><u>kscott@mitre.org</u></font></a><font size=3 face="Calibri">>,
Peter Shames <</font><a href=mailto:peter.m.shames@jpl.nasa.gov><font size=3 color=blue face="Calibri"><u>peter.m.shames@jpl.nasa.gov</u></font></a><font size=3 face="Calibri">>,
"</font><a href="mailto:sls-slp@mailman.ccsds.org"><font size=3 color=blue face="Calibri"><u>sls-slp@mailman.ccsds.org</u></font></a><font size=3 face="Calibri">"
<</font><a href="mailto:sls-slp@mailman.ccsds.org"><font size=3 color=blue face="Calibri"><u>sls-slp@mailman.ccsds.org</u></font></a><font size=3 face="Calibri">><b><br>
Subject: </b>RE: [Sls-slp] CCSDS definition of Protocol IDs</font>
<br>
<br><font size=2 face="Calibri">I think you raised an important point:
compactness vs. processing complexity. I think that however we should see
this trade-off looking at the entire Transfer frame data field header,
which contains the protocol field (s). At the moment it is 32-bit aligned
(TFDZ:3 bits, ProtoID: 5 bits, Extended ProtoID: 8 bits, first header pointer:
16 bits) for a total of 32 bits, which is something always desirable. If
we reduce the protocol IDs from a total of 13 down to 8, the header becomes
of 27 bits. If we reduce from 13 to 6, it becomes 25 bits. </font>
<br>
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