Re: Interplanetary communications protocols

dave.harper_at_gmail.com
Date: 01/20/05 

To: sci-space-tech@moderators.isc.org
Date: 20 Jan 2005 07:14:19 -0800

Paul Hovnanian P.E. wrote:

> In this case, it would be conceivable that the relay satellite would
> provide a routing function. It would depend on the storage capacity
and
> lifetime of the probes vs the relay platform. A request to re-send a
> data packet, forwarded through a relay to the originating probe would
be
> useless if the probe had too short a lifetime or risked being
destroyed
> or lost. A store and forward protocol (like e-mail) might be more
> appropriate.

Yeah, I was thinking TCP/IP wouldn't make much sense unless there was a
network of routing stations in solar orbit. These could be used as a
relay, and also boost signal between ends for faster communication.
Then again, I don't see much advantange of TCP/IP in this situation
either, instead of just using standard deep space comm protocols and
using relay stations as a signal boost.

TCP/IP really would only make sense if there wasn't an easy, direct
link to the satellite. Routing just for the heck of routing doesn't
make much sense.

Dave

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