Pervasive Learning with Wireless

1
Pervasive Learning with Wireless

• Class Presentation by Lin Zhong April 24th, 2001
• for ELE580U group of Sujoy Banerjee, Chao Huang
  and Lin Zhong

2
Pervasive Learning

• Check the schedule
• Requirements for Pervasive Learning
• Wireless Network and Handheld Device Evaluation
• Check the schedule

3
Check the Schedule

• Our schedule in proposal
• http//www.ee.princeton.edu/lzhong/presentation/e
  le580u/proposal.pdf

4
Check the schedule
Define bandwidth and other requirements
Evaluate wireless devices and networks
Select the devices and networks
Design a prototype
5
Requirements for P-Learning
Source Aberdeen Group, Nov. 2000
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Requirements for P-Learning

• Bandwidth
• At least 28.8kbps to ensure comfortable web
  browsing experience
• Latency
• No more than 1.5 second(?)
• Price
• Service fee should be less than 100/month
• Availability
• At least major metro areas
• All the time

7
Requirements for P-Learning

• Security/Commercial profitability
• Accessible only for legal users
• A user can access only subscribed stuffs.

8
Network Evaluation

• Palm.Net vs. Ricochet Wireless LAN
• Structure
• Bandwidth
• Price
• Availability
• Browser

9
Palm.Net-gtStructure
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Palm.Net

• BellSouth Wireless Data Networks
• 1G/2G Wireless Network
• 8kbps to 19.2 kbps
• 3G promise 386kbps(pedestrian)/128kbps(car)/2Mbps
  (fixed)
• Will not be true for US in several years
• High latency

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Palm.Net

• Availability
• over 260 of the most populated areas in the U.S.
  The same rates apply everywhere, and there are no
  roaming charges.

12
Palm.Net-gtPrice
13
Palm.Net-gtBrowser
Not browsing! Web Clipping
14
Palm.Net-gtHardware
Palm OS PDAs
15
Ricochet-gtStructure
900 MHz
PoletopRadio
2.3 GHz
2.4 GHz
High-speed dedicated wired connections
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Ricochet

• Poletop Radios Mesh Network
• Download 128Kbps
• Upload 64Kbps
• Mobility
• Travel within any covered Metro Area
• Be in motion up to 70 MPH
• Reliability
• No busy signals
• No dropped connections

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Ricochet-gtAvailability

• Availability
• at 128 kbps in Atlanta, Baltimore, Dallas/Ft
  Worth, Denver, Detroit, Houston, Los Angeles,
  Minneapolis-St Paul, New York City, Philadelphia,
  Phoenix, San Diego, and the San Francisco Bay
  Area.

planned for the following markets Albany,
Albuquerque, Austin, Boston, Buffalo, Charlotte,
Chicago, Cincinnati, Cleveland, Colorado Springs,
Columbus,Indianapolis, Kansas City, Las Vegas,
Memphis, Miami, Milwaukee, Omaha, Orlando,
Pittsburgh, Portland, Providence, Raleigh
/Durham, Richmond /Petersburg, Rochester,
Sacramento, Salt Lake City, Santa Fe, Seattle,
St Louis, Tulsa, Virginia Beach and Washington,
D.C..
18
Ricochet-gtPrice
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Ricochet-gtHardware
Laptop PCs, Handheld PCs, Pocket PCs, Windows CE
PDAs Windows CE WAP mobile phones
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Palm.Net Vs. Ricochet
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Palm.Net Ricochet

• Different Services and different markets
• Palm.Net
• Pervasive Dictionaries/Technical
  handbooks/manuals
• Ricochet
• Pervasive Learning with multimedia experience
• Interactive Learning

22
Check the Schedule(again)

• Whats going on?
• Developing the web clipping program for
  terminology searching
• Reconfigure the existent database to
  facilitate/enhance the wireless accessing
  experience
• Wireless user Authentication Paradigm
• Reconfigurable P-Learning Platform.

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Reconfigurable P-Learning Platform

• One wired exmaple
• Princeton University's Blackboard CourseInfo 4.0
• http//courseinfo.princeton.edu/
• How can we implement P-learning system while
  maximizing resource reuse?
• Like platform-based embedded system design.

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Reference

• http//www.metricom.com/ricochet_advantage/index.h
  tml
• http//www.palmos.com/dev/tech/webclipping/
• http//www.circuitcity.com
• http//www.microsoft.com/mobile/
• http//www.arm.com/app.ns4/html/wireless
• http//www.intel.com/mobile/
• http//www.handspring.com
• http//www.clio.com