Bluetooth technology

1. BLUETOOTH TECHNOLOGY

2. TOPICS TO BE DELIVERED
Introduction
History
Technology Review
Bluetooth vs Other Wireless Technologies
Advantages of Bluetooth Technology
Disadvantages of Bluetooth Technology
Future of Bluetooth
Conclusion
References

3. Introduction
Definition
Bluetooth is a short-range and low power wireless technology
originally developed for exchanging data over short distances from fixed
and mobile devices, creating personal area networks (PANs).
Short-range radio frequency technology that operates at 2.4 GHz on an
unlicensed Industrial Scientific Medical (ISM) band.
Effective range of Bluetooth devices is 10 meters.
It was originally conceived as a wireless alternative to data cables.

4. History
Dr. Jaap Haartsen, who invented Bluetooth while working at Ericsson in
the 1990s,
The word "Bluetooth" is taken from the 10th century Danish King Harald
Bluetooth, he had been influential in uniting Scandinavian tribes into a
single kingdom.
In 1994 a group of engineers at Ericsson, a Swedish
company, invented a wireless communication
technology, later called Bluetooth.
Dr. Jaap Haartsen
Harald
Bluetooth

5. Value proposition of Bluetooth
Cordless
headset
Cell
phone
mouse
Cable replacement
Ad hoc networking
Data access
point
Internet access

6. Technology Review
Bluetooth uses a radio technology called frequency-hopping spread
spectrum.
Supports data rate of 1 Mb/s(originally).
The Bluetooth specifications are developed and licensed by the Bluetooth
Special Interest Group (SIG).

7. Your site here
LOGO Classes Of Bluetooth
Bluetooth devices are classified according to
three different power classes, as shown in the
following table.

8. Piconets
Definition
“Two or more Bluetooth units
sharing the same channel”
One device acts as a master and the devices connected
to it act as slaves.
Slaves can not directly send data to each other.
In effect, the master acts as a switch for the piconet
and all traffic must pass through the master.
There can be up to 7 active slaves in a piconet but only
one master.

9. Your site here
LOGO Piconet formation
Master
Active Slave
Parked Slave
Standby

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LOGO
Cell phone Cordless
headset
Cordless
headset
Cell phone
Cordless
headset
Cell phone
mouse
Inter piconet communication
Master
Active Slave

11. Scatternets
DEFINITION
“A set of two or more interconnected piconets form scatternets.”
A Bluetooth unit can be a slave in two or more piconets, but it can
be a master in only one.
Devices that participate in two or more piconets may act as
“gateways.”
Bluetooth units can only transmit and receive data in one piconet
at a time.
Piconets may be identified by the master's identity and clock.
Devices give notification of inactivation to master before becoming
inactive in its piconet for a finite length of time.

12. Your site here
LOGO Scatternet formation
Master
Active Slave
Parked Slave
Standby

13. Your site here
LOGO
Application Framework
and Support
Link Manager and L2CAP
Radio & Baseband
Host Controller
Interface
RF
Baseband
Audio
Link Manager
L2CAP
TCP/IP HID RFCOMM
Applications
Data
Bluetooth Protocols

14. Your site here
LOGO
Bluetooth vs Other Wireless
Technologies

15. Your site here
LOGO
The Hands Free synchronizes its phonebook with the contacts on the
mobile phone.
The phonebook is vocally available at any time through Voice
Recognition, Text To Speech & Voice Tags.
Synchronization is done only once (at first connection).
Phonebook synchronization
Automatic
Alessandro Del Piero
Gianluigi Buffon
Fabio Cannavaro
Fabio Grosso
Tiago
David Trezeguet
Alessandro Del Piero
Gianluigi Buffon
Fabio Cannavaro
Fabio Grosso
Tiago
David Trezeguet

16. Advantages
Eliminates wires
Offers formation of Ad hoc networks
Standardized protocol
Free of charge
Easy to use
Low power consumes battery less
Stationary and mobile environments
Facilitates Data and Voice Communication

17. Disadvantages
Relatively short range
Less secure
Interference with other devices
Mediocre Data rates
Bluetooth internet connection gets slow
sometimes

18. Your site here
LOGO Future Of Bluetooth
Bluetooth has a good future ahead because it
meets a basic need of connectivity.
Currently a protocol is being researched that
would support large ad hoc networks.
Latest version of Bluetooth are improving both
its security and capabilities.
Ultra wide band has been chosen by the
Bluetooth Special Interest Group as the future
of Bluetooth Technology.
New versions of Bluetooth technology will
meet the high-speed and large range.
Many companies are designing impressive
bluetooth applications in demand.

19. Security
 Authentication and
encryption is
provided at the Link
Manager layer.
 The PIN is translated
into a 128 bit link key
which is used for
authentication.
 After authentication
the radios will settle
on a suitable length
encryption key to be
used.
 Bluetooth relies on
PIN codes to
establish trusted
relationships
between devices.

20. Conclusion
A new global standard for data and voice
Eliminates Cables.
Low Power, Low range, Low Cost network devices.
Bluetooth seems to have a bright future after reviewing its benefits
and wide use.
Further improvements are planned to be made in
Data Rates
Power Reduction
Range

21. Your site here
LOGO References
[1] Future Of Bluetooth Technology
by Justin Blasdin, Kian Pokorny
[2] Security Comparison: BluetoothTM Communications vs. 802.11
Thomas G. Xydis Ph.D, Simon Blake-Wilson
[3] Bluetooth dot dot attacks
By John F.David, Michael Barclay
[4] Bluetooth : A Technology in Demand
By Aniston Roger, Siamonds Lee
[5] Bluetooth Era
http://en.wikipedia.org/wiki/Bluetooth
[6] Blue Tooth
http://www.wirelessdevnet.com/channels/bluetooth/features/bluetooth.html
[7] Introduction To Bluetooth
http://www.gsmfavorites.com/documents/bluetooth/introduction/
[8] Advantages Of Bluetooth
http://ezinearticles.com/?What-Are-The-Advantages-Of-Bluetooth-Technology?&id=562666
[9] Bluetooth vs. Wi-Fi Technology
http://www.smallbusinesscomputing.com/webmaster/article.php/3331421
[10] Hack Device via Bluetooth without owner’s permission
http://www.wonderhowto.com/how-to/video/how-to-hack-a-cell-phone-to-make-free-
phone-calls-218649/