Re: Communication with a colony on the Moon


"Mike Williams" <nospam@xxxxxxxxxxxxxxxxxx> wrote in message
news:9GtMOCAf8xFEFwUV@xxxxxxxxxxxxxxxxxxxxx
Wasn't it Technoknight who wrote:
Hi all,

Here's the questions: do we have a way for new Moon colonists to
communicate with Earth? What about getting an Internet connection
with an ISP back on Earth?

The Internet would be a bit clunky with the 1.34 seconds light delay in
each direction. Static web pages would take at least 5.36 seconds longer
to load due to those latencies (send request, get html, browser finds
the URLs of the images and other media and sends the requests, get
media). I'd imagine that they'd have special browsers that were
specifically designed to minimise the number of back-and-forth messages,
otherwise there'd be extra delays for things like asking if the server
had a more recent copy of the file than the one held in cache.

Similarly, they'd probably want to run special versions of the low level
protocols that would increase the amount of data that could be in-flight
at any instant, and the time delay before an acknowledgement is
required. Otherwise the ISP would fire off its maximum number of data
packets in a fraction of a second, then wait 2.68 seconds for the
acknowledgements to come back before sending the next data packet.

--
Mike Williams
Gentleman of Leisure


The problem is being actively addressed by technical experts:
http://www.livinginternet.com/i/ii_cerf.htm



.

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