BLUETOOTH TECHNOLOGY

TOPICS TO BE DELIVERED

IntroductionHistoryTechnology ReviewBluetooth vs Other Wireless TechnologiesAdvantages of Bluetooth TechnologyDisadvantages of Bluetooth TechnologyFuture of BluetoothConclusionReferences

IntroductionDefinition

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.

HistoryDr. 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

Value proposition of BluetoothCordlessheadset

Cell phone

mouse

Cable replacement

Ad hoc networking

Data accesspoint

Internet access

Technology ReviewBluetooth 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).

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

Piconets Definition

“Two or more Bluetooth units sharing the same channel”

One device acts as a master and the devices connectedto it act as slaves.

Slaves can not directly send data to each other.

In effect, the master acts as a switch for the piconetand all traffic must pass through the master.

There can be up to 7 active slaves in a piconet but onlyone master.

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LOGO Piconet formationMaster

Active Slave

Parked Slave

Standby

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Cell phone Cordlessheadset

Cordlessheadset

Cell phone

Cordlessheadset

Cell phone

mouse

Inter piconet communication

Master

Active Slave

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.

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LOGO Scatternet formationMaster

Active Slave

Parked Slave

Standby

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LOGO

Application Framework and Support

Link Manager and L2CAP

Radio & Baseband

Host Controller Interface

RFBaseband

AudioLink Manager

L2CAP

TCP/IP HID RFCOMM

Applications

DataC

ontro

l

Bluetooth Protocols

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LOGO Bluetooth vs Other Wireless Technologies

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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

AutomaticAlessandro Del PieroGianluigi BuffonFabio CannavaroFabio GrossoTiagoDavid Trezeguet

Alessandro Del PieroGianluigi BuffonFabio CannavaroFabio GrossoTiago

David Trezeguet

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

Disadvantages Relatively short range

Less secure

Interference with other devices

Mediocre Data rates

Bluetooth internet connection gets slow sometimes

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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.

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.

ConclusionA 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 inData RatesPower ReductionRange

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LOGO References[1] Future Of Bluetooth Technology

by Justin Blasdin, Kian Pokorny

[2] Security Comparison: BluetoothTM Communications vs. 802.11Thomas G. Xydis Ph.D, Simon Blake-Wilson

[3] Bluetooth dot dot attacks By John F.David, Michael Barclay

[4] Bluetooth : A Technology in DemandBy Aniston Roger, Siamonds Lee

[5] Bluetooth Erahttp://en.wikipedia.org/wiki/Bluetooth

[6] Blue Tooth http://www.wirelessdevnet.com/channels/bluetooth/features/bluetooth.html

[7] Introduction To Bluetoothhttp://www.gsmfavorites.com/documents/bluetooth/introduction/

[8] Advantages Of Bluetoothhttp://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/

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