1. BLUETOOTH TECHNOLOGY Sanjay Lamba M.Sc. Tech. Mathematics Central University of Rajasthan Presented By :-

2. Contents

Introduction

History

Technology Review

Bluetooth vs Other Wireless Technologies

Advantages of Bluetooth Technology

Disadvantages of Bluetooth Technology

Future of Bluetooth

Conclusion

References

3. Introduction 4. Introduction

Definition

Bluetoothis 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.

5. Value proposition of Bluetooth Cable replacement Ad hoc networking Data access point Internet access Cordless headset Cell phone mouse 6. History

The word "Bluetooth" is taken from the 10th century Danish KingHarald 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.

7. Technology Review 8. Technology Review

Bluetooth uses a radio technology calledfrequency-hopping spread spectrum.

Supports data rate of1 Mb/s (originally).

The Bluetooth specifications are developed and licensed by the Bluetooth Special Interest Group (SIG).

9. Classes Of Bluetooth

Bluetooth devices are classified according to

three different power classes, as shown in the

following table.

10.

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.

Piconets 11. Piconet formation Master Active Slave Parked Slave Standby 12. Inter piconet communication Cell phone Cordless headset Cordless headset Cell phone Master Active Slave Cordless headset Cell phone mouse 13.

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.

Scatternets 14. Scatternetformation Master Active Slave Parked Slave Standby 15. Bluetooth Protocols 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 Control 16. Bluetooth Protocols

Radio Protocol

Responsible for the modulation and demodulation of data into RF signals.

The radio layer describes the physical characteristics a Bluetooth devices 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.

17. 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 Interface

The 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.

18. Bluetooth Protocols

Service Discovery Protocol

Defines procedures for

Discovering 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.

19. Bluetooth vs Other Wireless Technologies 20. Bluetooth vs Other Wireless Technologies 21. The World According toBluetooth 22. 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 23. 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 24. 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 doheadsetandhands-free . What about you ? 25. 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. 26. 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. 27.

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 28. Bluetooth Technology

Advantages and Disadvantages

29. 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

30. Disadvantages

Relatively short range

Less secure

Interference with other devices

Mediocre Data rates

Bluetooth internet connection gets slow sometimes

31. Future Of Bluetooth 32. 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-speedand large range.

Many companies are designing impressive bluetooth applications in demand.

33. 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

34. 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 owners permission

http://www.wonderhowto.com/how-to/video/how-to-hack-a-cell-phone-to-make-free- phone-calls-218649/

35. 36.

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