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BLUETOOTH. 第七組 王文道. Outline. What is “Bluetooth” Characteristic Security Comparison Application/ Conclusion. Wireless World. IEEE 802.1X Home RF GSM 、 GPRS 、 3G ZigBee IrDA Bluetooth. About Bluetooth……. Where SIG ,founded in September 1998

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Presentation Transcript
bluetooth

BLUETOOTH

第七組 王文道

outline
Outline
  • What is “Bluetooth”
  • Characteristic
  • Security
  • Comparison
  • Application/ Conclusion
wireless world
Wireless World
  • IEEE 802.1X
  • Home RF
  • GSM、GPRS、3G
  • ZigBee
  • IrDA
  • Bluetooth
about bluetooth
About Bluetooth……
  • Where

SIG ,founded in September 1998

IBM, Intel, Ericsson, Nokia, Microsoft……

  • Why

Danish King - Harald Bluetooth

  • What

Short range (10 meters)

Frequency-hopping radio link

outline1
Outline
  • What is “Bluetooth”
  • Characteristic
features
Features
  • 2.4GHz
  • Range : 0.1~100 meters
  • Low power
features1
Features
  • GFSK (Gaussian Frequency Shift Key)
  • TDMA (Time Division Multiple Access)
  • FHSS (Frequency Hopping Spread Spectrum)
slide9
FHSS
  • 79 (23)channels
  • Each one is 1MHz
  • Hopping 1600/s
features2
Features
  • Max Bandwidth: 1Mb/s
  • Average Rate: 720kb/s
  • 1 Master connect to 7 Active Mode Slave ( or 255 Standby Mode ones ) to from a Piconet
  • Extension : Piconet -> Scatternet
topology
Topology

Piconet

Scatternet

states
States

Inquiry

Page

Connected

Standby

modes

Fastest

Responsiveness

Slowest

Active

Sniff/Hold

Park

Power Consumption

Highest

Lowest

Modes
outline2
Outline
  • Characteristic
  • Security
security
Security
  • Frequency hopping
  • Stream cipher EO
security1
Security
  • Mode1: no security. 應用於不重要的資料
  • Mode2: service level-enforced security.富有彈性, 建立連線後才根據應用的不同來決定安全性的高低.
  • Mode3: link level-enforced security. 在建連結時就會啟用安全模式, 如果沒有通過則連結不會被建立.
outline3
Outline
  • Security
  • Comparison
bluetooth v s irda
Bluetooth V.S IrDA
  • Convenience

Radio wave V.S Infrared light

  • Range

0.1-100 meters V.S 1 meter

  • Data rate

1 Mbps V.S 4 Mbps

bluetooth v s irda1
Bluetooth V.S IrDA
  • Power

100 mW V.S 10 mW

  • Safety
  • Price

$5.00 V.S <$1.00

outline4
Outline
  • Comparison
  • Application/ Conclusion
bluetooth products
Bluetooth Products
  • Mobile Phones
bluetooth products1
Bluetooth Products
  • Computer Equipment
bluetooth products2
Bluetooth Products
  • Home Environment