1. Bluetooth: an IntroductionBy
Venkateshwar rao namilakonda
&
Naren Kumar chennuru

2. Outline Bluetooth Comparision with other technologies
Bluetooth architecture
Bluetooth profiles

3. What Is Bluetooth? Low-cost, low power, short-range radio technology
Intended for cable replacement
Operates in licensed exempt ISM band at 2.4ghz
Uses frequency hoping spread spectrum
Omni directional, no requiring line of sight
Secure
Extreamely popular

4. Why Not Infrared? Intended for point to point links
Limited to line of sight
Low penetration power
Distance covered is low(1 meter approx)

5. Why Not 802.11? Intended for wireless communication High-cost
High-power consumption

6. Compare 802.11, Infrared, Bluetooth
Connection Type
Spread Spectrum
Infrared, narrow beam
Spectrum
2.4GHz
Optical 850 nano meters
Data Rate
1Mbps
16Mbps
11Mbps
Range
30 Feet
3 Feet
300 Feet
Supported Devices
Upto 8 2
Multiple

7. Cont….. Voice Channels 3 1 VoIP Data Security 8-128bit Key
No special security
40/128bit key
Addressing
48 bit MAC
32 bit ID

8. Bluetooth Chip RF
Baseband
Controller
Link
Manager
Bluetooth Chip

9. Bluetooth Protocol Stack by SIG

10. Simplified Bluetooth stack

12. Bluetooth Profile Structure

13. Usage Models Cordless computer Ultimate headset Three-in-one phone
Interactive conference (file transfer)
Direct network access
Instant postcard

14. Our Focus
Bluetooth security

15. References Wireless communications and networks Bluetooth.org
WWW is our main resource