3. Definition of Bluetooth
Bluetooth is a short range (10-100 m)
and low-cost wireless
network system to replace cables and
give RF connection
between consumer devices.
4. • What is Bluetooth?
o Bluetooth is a short-range wireless communications
technology.
• Why this name?
o It was taken from the 10th century Danish King
Harald Blatand who unified Denmark and Norway.
• When does it appear?
o 1994 – Ericsson study on a wireless technology to
link mobile phones & accessories.
o 5 companies (Ericssn,Nokia,IBM,Toshiba &
Intel)joined to form the Bluetooth Special Interest
Group (SIG) in 1998 named.
o First specification released in July 1999.
5.
6. • Uses the radio range of 2.45 GHz
• Theoretical maximum bandwidth is 1 Mb/s
• Several Bluetooth devices can form an ad
hoc network called a “piconet”
– In a piconet one device acts as a master (sets
frequency hopping behavior) and the others as
slaves
– Example: A conference room with many
laptops wishing to communicate with each
Other
7. • Laptops
• Cellular phones
• Personal Digital Assistants
• Headsets
• Printers
• Keyboards/mice
• GPS, etc…
• Major use in consumer electronics
8. • Allows up to 8 devices to communicate in a local
network called a Piconet, also known as a Personal
Area Network or PAN
• Because of its low power consumption, its range is
limited to 10 m.
• However, range can be increased to 100 m by
employing a scatternet topology or a higher powered
antenna
• Three classes of Bluetooth devices
-Class 3 radios – have a range of up to 1 meter or 3
Feet.
-Class 2 radios – most commonly found in mobile
devices – have a range of 10 meters or 30 feet
-Class 1 radios – used primarily in industrial use
9. • The Bluetooth standard is maintained and published
by the Bluetooth Special Interest Group (SIG)
• Includes thousands of member companies
• Covers topics such as interoperability, testing and
qualification of bluetooth devices
• Most important, outlines the specifications for:
- Bluetooth Radio
- Baseband
- LMP – Link Manager Protocol
10. • Responsible for link set-up between devices,
including security functions :
– Authentication
– Encryption
11. • Infrared IrDA (WPAN) : synchronization, link
between a phone and a laptop…
– Less flexible than Bluetooth, need of a line of site
– Comparable data rate
• Wi-Fi (WLAN) : Wireless LAN access
– Far higher bandwidth and data rate than Bluetooth
– Higher power consumption than Bluetooth
– Requires infrastructure investment
12.
13. •Success of Bluetooth depends on how well it is
integrated into consumer products
-Consumers are more interested in applications than the
technology
-Bluetooth must be successfully integrated into consumer
-- products
-Must provide benefits for consumer
-Must not destroy current product benefits
•Key Success Factors
-Interoperability
-Mass Production at Low Cost
-Ease of Use
