lakshmi narayana.CAbhimat mishra

Siva pradeepB-TECH

VIT UNIVERSITY

Presented By :-

Contents

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

Introduction

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.

Cordlessheadset

Cell phone

mouse

Cable replacement

Ad hoc networking

Data accesspoint

Internet access

History

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.

Bluetooth was named so because

1) Bluetooth technology was developed in Scandinavia.

2) Bluetooth technology is able to unite differing industries such as the cell phone, computing, and automotive markets.

Technology Review

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).

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.

Master

Active Slave

Parked Slave

Standby

Cell phone Cordlessheadset

Cordlessheadset

Cell phone

Cordlessheadset

Cell phone

mouse

Master

Active Slave

ScatternetsDEFINITION “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.

Master

Active Slave

Parked Slave

Standby

Application Framework and Support

Link Manager and L2CAP

Radio & Baseband

Host Controller Interface

RF

Baseband

AudioLink Manager

L2CAP

TCP/IP HID RFCOMM

Applications

DataC

ontro

l

Bluetooth Protocols

Bluetooth ProtocolsRadio Protocol

Responsible for the modulation and demodulation of data into RF signals.The radio layer describes the physical characteristics a Bluetooth device’s receiver-transmitter component must have.

BASEBAND PROTOCOL

Responsible for channel coding and decoding.Digitizes the signals received by the radio for passing up the stack.Formats the data it receives from the Link Controller (upper protocol) for transmission over the channel.

Link Controller

Responsible for establishing and maintaining the links between Bluetooth units.

Bluetooth Protocols

The Link Manager Protocol (LMP) Handles link setup, authentication, link configuration and security procedures. Establishes all connections with the help of baseband protocol.

Host Controller InterfaceThe Host Controller Interface (HCI) defines uniform methods for accessing and controlling the lower layers of the protocol stack (baseband and the link manager).

Logical Link Control and Adaptation Protocol (L2CAP) Responsible for:

Establishing connections across existing ACL (Asynchronous Connection-oriented) links or requesting an ACL link if one does not already exist.Allow many different applications to use a single ACL link through multiplexing.Repackaging the data packets it receives from the higher layers into the form expected by the lower layers.

Bluetooth ProtocolsService Discovery Protocol

Defines procedures forDiscovering services of other devices.Determining the characteristics of those services.

Telephony Control Protocol Specification (TCS) defines call

Control signaling for establishing speech and data calls between Bluetooth devices, providing them with telephony services.

Object Exchange Protocol

Is a specification for Object data exchange over IR(InfraRed links).Examples for using OBEX include exchanging business cards and synchronizing calendar applications.

Bluetooth vs Other Wireless Technologies

Bluetooth vs Other Wireless Technologies

Different phases of Bluetooth Hands free kit connection

Discovery

Pairing

Detection of Profiles

Connection

Data Synchronisation

Hello, I am looking for bluetooth devices

Hello, I am an available Bluetooth

device

Different phases of Bluetooth Hands free kit connection

Discovery

Pairing

Detection of Profiles

Connection

Data Synchronisation

What is your authentification

Code ?

1234…This code has to

be typed on your keyboard

Ok !Now we are

paired

Different phases of Bluetooth Hands free kit connection

Discovery

Pairing

Detection of Profiles

Connection

Data Synchronisation

What type of profile do you

support ?

I can do headset and hands-free.

What about you ?

Different phases of Bluetooth Hands free kit connection

Discovery

Pairing

Detection of Profiles

Connection

Data Synchronisation

Ok, we are now connected in Hands-free.

I can do hands-free.

Different phases of Bluetooth Hands free kit connection

Discovery

Pairing

Detection of Profiles

Connection

Data Synchronization

To complete my phonebook, I

have to synchronise with your contacts

Ok, I transfer my 163

contacts.

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 Piero

Gianluigi Buffon

Fabio Cannavaro

Fabio GrossoTiago

David Trezeguet

Bluetooth TechnologyAdvantages and Disadvantages

Advantages Eliminates wires

Facilitates Data and Voice Communication

Offers formation of Ad hoc networks

Standardized protocol

Free of charge

Easy to use

Low power consumes battery less

Stationary and mobile environments

Disadvantages Relatively short range

Less secure

Interference with other devices

Mediocre Data rates

Bluetooth internet connection gets slow sometimes

Future Of Bluetooth

Future Of BluetoothBluetooth 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.

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 Rates

Power Reduction

Range

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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