I was discussing/commenting on the subject as the thread
did about using space internet protocols on satellites, still no standards
for space.
AB
On Friday, December 27, 2013, wrote:
AB
The Moon is arguably a satellite of Earth, but the distances are different
from LEO and GEO. That affects TCP performance.
TCP was designed with geostationary satellite hops in mind - see eg
RFC829. I use TCP across geostationary satellites daily.
I back up my statements with experience and references. What do you back
yours with? Why is UDP inefficient?
Lloyd Wood
http://about.me/lloydwood
________________________________________
From: Abdussalam Baryun [abdussalambaryun(_at_)gmail(_dot_)com <javascript:;>]
Sent: 27 December 2013 06:01
To: Wood L Dr (Electronic Eng)
Cc: mcr+ietf(_at_)sandelman(_dot_)ca <javascript:;>; ietf(_at_)ietf(_dot_)org
<javascript:;>
Subject: Re: Chang'E 3
So if TCP has problems then MPTCP has problems then they may not be
preferred for that satellite networking. For LEO SATNETs also there are
problems for using TCP. The UDP is a good solution in general but not
efficient, but always I think the SATNETs may need some special internet
transport protocols because they are having more dynamics in the net's
lower layers.
AB
AFAIK vanilla ftp/TCP has (only?) been used on CHIPsat from LEO, but that
did not have much data to transfer.
We designed http://saratoga.sf.net with the idea of a continuous UDP
stream of data from Pluto in mind...
Lloyd Wood
http://sat-net.com/L.Wood/
________________________________________
From: ietf [ietf-bounces(_at_)ietf(_dot_)org <javascript:;><javascript:;>] On
Behalf
Of Abdussalam Baryun [abdussalambaryun(_at_)gmail(_dot_)com <javascript:;>
<javascript:;>]
Sent: 26 December 2013 16:40
To: Michael Richardson
Cc: ietf(_at_)ietf(_dot_)org <javascript:;><javascript:;>
Subject: Chang'E 3
Transport protocol for satellites depend on the applications, the network
dynamics, links and transmission channels. IMO the use of MPTCP for
Back2Earth may not be the best option making the communication complex, not
sure why did you hope to use it with this project.
AB