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it is a interesting topic. ietf protocols may
be extended to space.
Jiankang Yao
Date: 2013-12-28 06:31
Subject: Re: Chang'E 3
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@xxxxxxxxx]
Sent: 27 December 2013
06:01
To: Wood L Dr (Electronic Eng)
Cc: mcr+ietf@xxxxxxxxxxxx; ietf@xxxxxxxx
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@xxxxxxxx<_javascript_:;>] On Behalf
Of Abdussalam Baryun [abdussalambaryun@xxxxxxxxx<_javascript_:;>]
Sent:
26 December 2013 16:40
To: Michael Richardson
Cc: ietf@xxxxxxxx<_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
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