Networks Now and Future

1
Networks Now and Future

• From Ethernet to Interplanetary Networks

2
Basics of networks

• Computers can talk to each other when connected
  together.
• Can send files, log on, chat, send video, audio,
  and much more.
• Can connect in lots of ways.
• Different networks can be connected together The
  Internet.

3
Traditional wired nets

• Some kind of wire connects one machine to
  another.
• Can be copper (normal wire).
• Can be fibre optic.
• Doesnt have to be internet Windows Networking,
  appletalk, and way more.
• Wire can be short, or can go for very long
  distances. Especially if its fibre.

4
Global networking TCP/IP and ATM

• Internetworking connecting one network to
  another to get a network of networks
• TCP/IP, aka The Internet, is based on bouncing
  packets around the world, each one finding its
  own route from one place to another. Rather
  random, but simple.
• ATM, asynchronous transfer mode, based on sending
  cells around the world. Route determined, like
  a phone line. Better quality.

5
Routing, nameservers, and all that

• The packets need to get somewhere.
• Internet has addresses 192.75.245.6
• ATM has connections and addresses.
• Routers move Internet packets around from one
  network to another.
• Switches move ATM cells between links. Like
  telephone switches.
• Nameservers let us know an address,
  tharsis.polylab.sfu.ca, from the number.

6
Mobile nets, wireless nets

• Can transmit digital (ones and zeroes)
  information via radio waves.
• Can bounce those radio waves from place to place
  via repeaters, like amplifiers.
• Can transmit anything, including TCP/IP
  (Internet) and ATM.
• Can connect the radio networks to the Internet.
• Can move around, and be on the net

7
E-commerce

• World used to be business via meetings, or via
  paper.
• These days we send everything, including money,
  via the network.
• In Europe, cash is vanishing. Netherlands folks
  use smart cards instead of it.
• Used to be push-based world business came
  looking for you.
• Now pull-based you, the prosumer, go find what
  you want.

8
M-commerce

• Wireless nets let you be on the net anywhere
• E-commerce lets you do business, buy or sell,
  anywhere on the network.
• M-commerce convergence of the two.
• You can access everything you want from wireless
  connections.

9
Cellphones, networks everywhere

• Cell networks network of networks, like the
  internet.
• Wireless, can support data.
• Wireless web access to your services from the
  cellphone.
• Will grow into a wide range of digital wireless
  services and devices available anywhere.
• Wireless networks to rule within 2 years.

10
Wandering around the network

• You used to have to physically set up your
  computer as you moved from one local network to
  another.
• Now youll have the Next Generation Internet
  (IPv6).
• Network will follow YOU around, over spacelinks,
  over radio links, over your home connection.
• Always at home or at work, as you choose.

11
Using spacecraft to talk

• Cant get wires or radios everywhere.
• Can talk to a spacecraft, and bounce the radio
  signal that way.
• Can have one big spacecraft, far away, or lots
  close up Iridium, GlobalStar, Teledesic.
• Can provide network services for an entire half
  of the planet.
• Can be very cheap.
• Even your radio may use a satellite!

12
Talking on another planet

• Wireless technology can be deployed anywhere
• Go to another planet, like the Moon or Mars
• Put down a wireless network
• Put down routers
• Put radio gear on the spacecraft, on the
  spacesuit, on the robots, on the rovers
• Martian Internet!

13
Talking TO another planet

• Can send a radio wave from Earth to Mars and back
• Can build a network connection on that just a
  big wireless net!
• Can make it REAL fast using lasers.
• Big network delays though.
• Who wants to chat with a doctor, customer service
  agent, SO who takes 40 minutes to answer?

14
Communicating with remote places

• Without a network, you could well be on another
  planet.
• Can use space connections to anywhere in the
  world.
• Who pays for them?
• Other, cheaper solutions, but long delays.
• Wireless nets cut down the cost.
• India space comms, wireless systems, major
  engineering expertise.
• Canada?

15
Communicating in emergencies

• Need to go somewhere weve never gone
• Set up a network
• Quickly
• People could die without it
• Sound familiar?

16
Whats appropriate?

• Network needed.
• Normal internet good? Do we need fast
  connections?
• If we do, how to we get them?
• Can we scale the network, from cellphones to
  broadband. Voice, maybe?

17
Project ideas

• ASI project proposals!
• Need help in community work Arctic, Africa,
  Northern BC.
• M-commerce surveys.
• Wireless web surveys.
• YOU name it.

18
Project ideas?

• WAP/WML/Wireless M-commerce Rick, Celine,
  Trinh, Rose, Tamara, Irene, Denise, Alanna, Joni,
  Chris, Mike, Chirag, Harold
• Arctic (ESA) Peter, Cecilia, David, Alanna,
  Chirag, Julia
• Space links Peter,
• East meets west Shawna, Celine
• Wireless/voice Shawna, Celine, Joni, Eric
• Environmental monitoring David

19
More ideas

• New media growth/alternate media David
• Empower (ESA too), NGO Chaw, Chirag, Trish,
  Julia
• Dangers Mike, Chris, Trinh, Chirag, Harold
• Global commodity exchange Trish, Julia
• Technology transfer Eric