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Bluetooth

Bluetooth. Ville Jounio Dap02s. Intoduction to Bluetooth Brief history How does it work? Other wireless methods Bluetooth devices today Future of Bluetooth. Definition. ” wireless short-range communications of data and voice between both mobile and stationary devices. ”. www.symbian.com.

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Bluetooth

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  1. Bluetooth Ville Jounio Dap02s

  2. Intoduction to Bluetooth • Brief history • How does it work? • Other wireless methods • Bluetooth devices today • Future of Bluetooth

  3. Definition ”wireless short-range communications of data and voice between both mobile and stationary devices.” www.symbian.com

  4. Some devices with Bluetooth • Mobile phones • Computers • MP3 Players • PDAs

  5. Where does the name come from? • The 10th century Danish King Harald Blatand • United tribes in Denmark, Norway and Sweden

  6. Logo • Designed by a Scandinavian company • Combination of runic characters H and B

  7. Timeline

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  12. Timeline

  13. SIG • SIG = Special Interest Group • Global headquarter in Overland Park (Arkansas, USA) • Driving the development of Bluetooth • Promoter members -Board of Directors, Bluetooth Qualification Review Board • Associate members • Adopter members

  14. How Bluetooth works? • Frequency 2.4 gHz (ISM) • Sends out weak signals (1milliwatt) • Range 10m • 721 Kbp/s • Half-duplex • Full-duplex

  15. Interference • What about interference when using many devices in the same area? • Spread-spectrum frequency hopping • 1600 times a second

  16. Bluetooth networks • Personal-area network (PAN, piconet) • Devices in the net use frequency hopping the same way • Master, slave • Up to 8 devices in one piconet • Several piconets form scatternet

  17. Piconet

  18. Scatternet

  19. Why use Bluetooth? • Cheap solution • Less cables (wireless) • Automatic (no setup) • Can be applied to almost anywhere • Trendy

  20. Other wireless methods • Infrared • UWB (Ultra Wideband) • ERF (Embedded Wireless Platform)

  21. Infrared • Information transfer via light • Must have a line of sight • Used in remote controllers etc. • Cannot send data to multiple devices at the same time • Reliable and low cost

  22. UWB • UWB 480 Mbps • No single specification • Highest speed only within 1m

  23. ERF Espotel • Developed by a finnish company • Highly configurable • Range 10-20m • 256 kbps (theoretical max of the net) • Low cost • Low power consumption (2 AA batteries, can work upto 2-3 years)

  24. Marketing • Bluetooth is sexy! • Implemented in trendy and fancy products • Most visible products MP3 players, cell phones and gaming devices • Used everywhere – at home, work, hobbies etc. • ”Best thing ever happened to you”

  25. Products using Bluetooth • Zodiac • Diva Gem GB4000 • Nokia N-Gage • Nokia Image Viewer • Crabat Mobile Media Viewer

  26. Diva Gem GB4000 Daisy Multimedia • MP3 Player, radio and recorder • Bluetooth • Incoming calls • Dialling using voice commands

  27. Bluetooth goodies • wrist watch • t-shirts • caps • bags • cups

  28. Bluetooth 2.0 + EDR • Specification launched November 2004 • EDR (Enhanced Data Rate) • Faster file transfer • 2.1 Mbps • Longer battery life • Backwards compatible

  29. Future • Bluetooth 2.0 devices on market early 2005 • 150 million devices in the end of 2004 • 470 million devices in the end of 2006 • 2005 concentrated on security issues and power consumption • 2006 multi-cast, improved range (100m)

  30. Thank you for listening! Now it’s opponent’s turn!

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