2. What is Bluetooth
› Launched by a special interest group(SIG) in
May 1998.
› Low cost
› Short Range
› Sharing

3. SIG
› Ericsson
› IBM
› Intel
› Nokia
› Toshiba

4. AIM
› To provide wireless
› Low cost
› Simple interface
› To avoid line-of-sight connection

5. How It Works….?
› It communicates on a frequency of 2.45
Ghz (ISM)
› spread-spectrum frequency hopping.

6. How It Works….?
Operational States
D
Master
F N
M
Active Slave
Parked Slave*
Standby* P
O
* Low power state
J
I Q
C

7. In the beginning
D
F N
H
G M
A P
B
O
E
K
J L
I Q
C

8. Inquiry
Note that a device can
be “Undiscoverable”
D
F N
H
G M
A P
B
O
E
K
J L
I Q
C
10 meters

9. Paging or Creating a Piconet
D
F N
H
G M
AA P
B
B
O
E
K
J L
I Q
C
10 meters

10. Expanding a Piconet
D
F N
H
G
G M
A P
B
O
E K
K
J L
I Q
C
10 meters

11. Scatternets
D
F H
G M N
A
B
O P
E K
J L
I
C Q

12. Protocol Architecture
8 Applications
RFCOMM/SDP/TCS/SDP
L2CAP
HCI
Link Manager
Link Controller
Baseband
1 Radio

13. Characteristics
› Allows up to 8 devices to communicate.
› Three classes of Bluetooth devices
‹ Class 3 – have a range of up to 1 meter or 3 Feet.
‹ Class 2 – have a range of 10 meters or 30 feet
‹ Class 1 – have a range of 100 meters or 300 feet

14. Advantages
› Wireless (No Cables)
› Inexpensive
› No Setup Needed
› Low Power Consumption (1 Milliwatt)
› Industry Wide Support
› Multiple simultaneous wireless connections
› Small form factor

15. Disadvantage
› Short range (10 - 100 meters)
› Small throughput rate
‹ 1.0v - 1.0 Mbps
‹ 2.0v - 3.0 Mbps

16. Comparison

17. Bluetooth Enabled Devices
› Laptops
› Cellular phones
› Personal Digital Assistants
› Headsets
› Printers
› Keyboards/mice
› GPS, etc…

18. CONCLUSION
• With its relatively low implementation costs, Bluetooth
technology seems destined to dominate the electronic
landscape, as humans worldwide will be able to form
personal area networks with devices and completely
simplify the way in which they interact with electronic
tools and each other.
• In the years to come, Bluetooth will become a
worldwide connectivity among electronic devices,
leading to applications unthinkable by today’s
technological standards. Because the radio frequency
used is globally available, Bluetooth can offer fast and
secure connectivity all over the world.