Lectures notes for 2010 - KTH

Are interplanetary and intergalactic networks
relevant to you?
1 Some customers: NASA, ESA, … ; but also scientists/astronomers
who want to look back in time
2 Future space explorers & tourists?
3 ⇒ delay tolerant networks (DTNs) - since the one-way delays are very
high - perhaps this offers insights into other DTNs
• For example, content distribution by the physical movement of “carriers” near to someone
who wants the content or someone who will pass it on (and on and on and on!)
4 The communication is going to have to remain uncorrupted for a very
long period of time (http://www.digitalpreservationeurope.eu/ )
• Note the Austrian goal of preserving digital documents for 200 years; this is much harder
than just copying the bits from one media to another, but also includes issues such as the
validity period for a digital signature (for authentication) or encryption (for privacy) and how
these properties can be extended for much longer periods of time
• Who is going to provide this storage/archiving/ … ?
• Who is going to transfer the “documents” to and from the storage repository (repositories)?
Maguire Are interplanetary and intergalactic networks relevant to you? 13: 7 of 91
maguire@kth.se 2010.03.21 Internetworking/Internetteknik