Save the World!

1
Save the World!

• Whats appropriate for global networking?

2
Where do we go from here?

• Networking costs money
• Market payback has driven network infrastructure
• Without networking, what do you do? Can you take
  part in the global market?
• Is networking a right?
• Who pays?

3
Pieces of the net

• Connections
• Wiring, especially fiber, expensive
• Wireless initially more expensive, less overall
  cost
• Routers
• Expensive ones make network use efficient
• Cheap ones, but not very efficient. QoS!

4
Bigger pieces

• Network backbone
• ATM infrastructure. REALLY expensive! But uses
  network more efficiently.
• IP Gigabit infrastructure. Cheaper, but doesnt
  go very far, doesnt use network efficiently.
  Wiring expensive.
• Dedicated WAN systems Frame, T1, and more.

5
What do we want to do?

• Applications
• E-mail
• Browsing a web site
• Creating a web site
• Video/audio conferencing
• Receiving small messages
• Sending small messages

6
E-mail

• The usual way - Simple Mail Transfer Protocol
  (SMTP) over Internet links.
• Can be slow links.
• Older ways - E-mail via shortwave radio modems,
  dial-up to dial up networking, other radio
  systems.

7
Browsing a web site

• The usual way - HTTP via an Internet link
• Can be cached - Local (proxy) server stores
  pages, and passes them on to users.
• Synchronization technologies (Avantgo and more)
  can deliver pages for later browsing.
• Wireless web, voice web? Low bandwidth browsing.

8
Creating a web site

• The usual way - editing files online (UNIX) or
  uploading files to web sites.
• More advanced modern ways - XML creation of
  content.
• Can E-mail updated sites, especially if using
  XML.
• Experiments with updating web sites using XML for
  mountain climbing.

9
Receiving small messages

• Usual way - peer to peer chat clients, cell
  phones, etc.
• Can be VERY low bandwidth
• Multiple radio systems can carry the information
  from a big transmitter to a large region.

10
Transmitting small messages

• Same method chat clients, cell phones.
• Still low bandwidth
• Need power at your end to send a signal a long
  distance.

11
How to get information around cheap

• Low-speed radio networking
• high-speed radio networking
• Satellite messaging
• Satellite network connectivity
• By foot!

12
Low-speed radio

• Often used in Amateur Radio
• Emergency use
• TNC - Terminal network controller
• CHEAP! 500.
• 1200 bps or 9600 bps. Long range.
• Messaging, GPS, other data packets.

13
Cheap high-speed radios

• IEEE 802.11b standard
• 11 Mbps over short range. 1 Mbps short.
• Can be extended to large range over flat terrain
• cheapish 500-1,500.
• Real Internet

14
Advanced Radios

• Extreme range
• High speed (4.5Mbps to 33 Mbps)
• Able to handle yucky topography
• More expensive 3000
• Social Intranets

15
Satellite solutions

• Satellite high-speed Internet Expensive, but
  fast. Slow possible.
• Satellite phone services - dial up network and
  SMS.
• Satellite messaging - cheap two way SMS-like
  messages.

16
By Foot?!

• Can place content, deliver content, via
  CD-ROM/DVD-ROM, etc.
• Can update via messaging systems.
• Limited, but possible.
• Dont knock it. The government does it!

17
Hybrid solutions

• Direct PC - high speed downlink of data from
  space.
• Uses phone link back
• Can use other routes back, like radio networks,
  maybe even SMS?
• Has very high speed package delivery.
• Small, cheap, easy to use.

18
Whats best?

• Up to you! Go build solutions.
• Different situations determine needs
• Arctic different from here
• Arctic different from Africa, Malaysia.
• Different topography, needs, culture
• Society Intranets can help maintain culture.
  Internet can impact on culture.
• Who pays?