BLUETOOTH Historical perspective

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BLUETOOTHHistorical perspective

• Deepthi Vemanath
• Prof. Eric Rau
• HIST 285

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What is it?

• Bluetooth technology is a low-power, low-cost
  wireless technology for short range radio
  communication between electronic devices like
  mobile phones, laptops, PDAs, stereo headsets,
  MP3 players, PCs, digital cameras and so on

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Bluetooth Products
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Who, What, Why??

• In 1876, Ericsson initiated Bluetooth technology
  movement to eliminate wire clutter in homes and
  offices.
• February 1998 - SIG

Lars Magnus Ericsson
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History

• Danish king Harald Bluetooth - united Denmark and
  Norway.
• Ericsson mobile communications decided to name
  their technological invention with his name
  hoping that Bluetooth of today would unite the
  world of computers and telecom.

King Harald Bluetooth
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Working of Bluetooth Technology..!

• Core system protocols
• Cable replacement (RFCOMM), Telephony
  control (AT), Adopted (TCP, IP), Radio
  protocol, Link control, Link manager, Logical
  link
• control and adaptation protocol (L2CAP).
• Main parts of the device
• Channel manager L2CAP
• Device manager Link manager
• Link control RF

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Bluetooth System Architecture
http//www.ensc.sfu.ca/ljilja/cnl/presentations/j
effrey/btpresentation/sld022.htm
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Piconet

• Piconet Collection of devices via Bluetooth
  technology in an ad-hoc fashion.
• BEDD Bluetooth wireless communications "to scan
  strangers' phones for their personal profiles.
• Umbrella project

http//ntrg.cs.tcd.ie/undergrad/4ba2.05/group3/ind
ex.html
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Competitive Technology

• Infrared (a standard for wireless connection).
• Infrared needs the transmitter and the receiver
  ports to be in line-of-sight with each other.
• The main drawback - it is a one-to-one
  technology, meaning, at a given time only two
  devices can be connected to each other.

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Competitive Technology (contd.)

• Bluetooth won over Infrared by allowing numerous
  devices to communicate without needing to be in
  line-of-sight.

www.jaht.com/application/bluetooth.jpg
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Other side of the wall

• In spite of all the advantages, there are also a
  few disadvantages of Bluetooth
• It operates on a small bandwidth
• Security Its discovery protocol allows devices
  to automatically find and start interacting with
  each other.

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Applications

• Making calls from a wireless headset connected
  remotely to a cell phone.
• Eliminating cable linking computers to printers,
  keyboards and mouse.
• Hooking up MP3 players wirelessly to other
  machines to download music.

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Applications(contd.)

• Calling home from a remote location to turn
  appliances on and off, set the alarm, and monitor
  activity.
• Use e-mail while your laptop is still in the
  briefcase! When your laptop receives e-mail,
  you'll get an alert on your mobile phone. You can
  also browse all incoming e-mails and read those
  you select in the mobile phone's display.
• And many more..

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Future of Bluetooth

• Tiny Bluetooth device monitors unborn babies
  heartbeat.
• Musically Talented Mobile Phones

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Conclusion

• Thus, the Bluetooth specification is definitely
  real and is being widely adopted by various
  industries. The possibilities for new
  applications is very exciting with this versatile
  technology.

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References

• E. M. Graham, S. M. Petersen, D. K. Christo, and
  H. E. Fox Intrapartum Electronic Fetal Heart
  Rate Monitoring
• and the Prevention of Perinatal Brain
  Injury. Obstet. Gynecol., September 1, 2006
  108(3) 656 - 666.
• Getting Started With Bluetooth - Page 14by
  Madhushree Ganguli - 2002
• Efficient polling schemes for Bluetooth
  picocellsA Capone, M Gerla, R Kapoor -
  Communications, 2001. ICC 2001. IEEE
  International , 2001 - ieeexplore.ieee.org
• Juha T. Vainio (2000-05-25). "Bluetooth
  Security". Helsinki University of Technology.
  Retrieved on 2007-02-01.

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