Bluetooth is a short-range wireless technology that allows devices such as phones, laptops, headphones, and other electronics to connect and communicate with each other over short distances of around 10 meters. It was developed in 1994 by telecom company Ericsson to replace wired cables and provide wireless connections between devices. The Bluetooth standard is maintained by the Bluetooth Special Interest Group, which oversees specifications that ensure interoperability between Bluetooth devices. Common uses of Bluetooth include connecting headphones to phones, transferring files between laptops and phones, and enabling wireless input devices like mice and keyboards.

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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.

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

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

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