bluetooth-130516090846-phpapp01

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CONTENTS

1-What is Bluetooth?

2-History.

3-Technology Review.

4-Basic Ideas About Bluetooth.

5-Bluetooth Architecture.

6-Competting Technologies.

7-Advantages And Disadvantages Of Bluetooth.

8-Future of Bluetooth.

9-Conclusions.

10-References.



What is Bluetooth?

Bluetooth is a short range(10-100m) and low-

cost wireless network system to replacecables and give RF connection betweenconsumer devices.



Bluetooth Was Originally a Cable-Replacement Technology

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HISTORY

The word ‘Bluetooth’ is taken from the 10 th century Danish King Harald Bluetooth,hehad been influential in uniting Scandinaviantribes into a single kingdom.

Bluetooth was so named 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

Bluetooth uses a radio technology called frequency -hopping spread spectrum.

Supports data rate of 1 Mb/s(originally).

The Bluetooth specification are developed and licensed by the Bluetooth Special Interest

Group(SIG).



BASIC IDEAS ABOUT

BLUETOOTH: 1)- Bluetooth Characteristics

2)-Classes of Bluetooth 3)-Bluetooth enabled devices

4)-Bluetooth Details



Bluetooth Characteristics: Allows up to 8 devices to communicate in a

localnetwork called a Piconet, also known as

a PersonalArea Network or PAN Because of its low power consumption, its

range islimited to 10 m.

However, range can be increased to 100 m by employing a scatternet topology or a higher powered antenna.



Classes Of Bluetooth:Three classes of bluetooth devices:

1) Class 3 radios: Have a range of upto

1 meter or 3 feet.

2) Class 2 radios: Most commonly found

in mobile devices-have a range of 10 meters

or 30 feet.

3) Class1 radios: Used primarily in industrial use

cases-have a range of 100 meters or 300 feet .



Bluetooth Enabled Devices: Laptop

Cellular phones

Personal Digital assistants

Headsets

Printers Keyboards

GPS,etc

Major use in consumer electronics



Bluetooth Details: 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.





BLUETOOTH ARCHITECTURE



The Bluetooth technology is divided

into two specifications: Core Specification -

Deals with the lowerlayers of the

architecture anddescribes how thetechnology works.

Profile Specification -

Focuses on how to buildinteroperating devicesusing the coretechnology.



Competting Technologies: Infrared Data Association(IrDA):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.



ADVANTAGES AND

DISADVANTAGESOF

BLUETOOTHTECHNOLOGY



ADVANTAGES: Eliminates wires.

Facilitates Data and Voice

Communication. Standardized protocol.

Free of charge.

Easy to use.



DISADVANTAGES: Relatively short range.

Less secure.

Interference with other devices.



FUTURE OF BLUETOOTH: Bluetooth has a good future ahead

because it meets a basic need of

connectivity. Latest version of Bluetooth are

improving both its security and

capabilities.



New versions of Bluetooth technology will meet the high-speed and large

range. Many companies are designing

impressive bluetooth applications in

demand.



CONCLUSIONS: 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 :

1-Data rates 2-Power Reduction 3-Range



REFERENCES: Bluetooth Architecture Overview

James Kardach

www.bluetooth.com

www.palowireless.com

www.google.com www.wikipidia.com

http://www.bluetooth.com/

http://www.palowireless.com/

http://www.google.com/

http://www.wikipidia.com/

http://www.wikipidia.com/

http://www.google.com/

http://www.palowireless.com/

http://www.bluetooth.com/



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