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By: Raginee Ranjan SinhaRoll: 06ESBEC071
BLUETOOTH
DefinitionBluetooth is a method for data communication that uses short-range radio links to replace cables between computers and their connected units.
TABLE:SPECIFICATION OF BLUETOOTH
PARAMETER RADIO SPECIFICATION Topology Connect up to 8 nodes in logical star(Pico net) Frequency Band 2.4-2.4835 GHz, ISM Band Channel Bandwidth 1 MHz Numbers of Channels 79 Peak Data Rate 1 Mbps Modulation Technique GFSK Transmit Power 0.1 Watt Frequency Hop Rate 1600 hops/sec Pico net Access FH-TDD Scatter net Access FH-CDMA
ORIGINATION OF “BLUETOOTH”
In 10th century Harald Bluetooth the king of Denmark united Norway and Denmark into a single kingdom. Apparently he got that name from his penchant for blueberries.
HISTORY OF BLUETOOTH
In 1994, Ericsson Mobile Communication Ltd. Started project named “Bluetooth”.
In 1998, Bluetooth SIG was formed and it officially adopts the project name “Bluetooth” as the name of technology.
Frequency Hopping Spread Spectrum
Technology was used for data transformation.
In 1999, Bluetooth 1.0 & Bluetooth 1.0B Specification was released
In 2000, Bluetooth headset and phone adaptor from Ericsson; the first consumer product.
In 2003, Bluetooth 1.2 was released.Improved resistance to radio frequency
interference. Ratified as IEEE 802.15.1-2005
In 2004, Bluetooth 2.0 with enhanced data rate (EDR) is released.
In Jun 2007, Nokia and Bluetooth SIG announced that Wibree will be a part of Bluetooth Specification as an ultra low power Bluetooth technology.
In July 2007, Bluetooth 2.1 Core Specification is released.
Extended Inquiry Response. Sniff Sub-rating. Secure Simple Pairing. Near field Communication (NFC)
Cooperation.
Comparison with other wireless technologies
802.11 Has higher bit rate compared to Bluetooth . But has
higher power consumption. Basic a LAN technology so not a direct competitor for Bluetooth
IrDA (Infrared Data Association) Low cost but require Line of sight. Only point to point Home RF Competing technology. But current Bluetooth is better
positioned in market
NEED FOR BLUETOOTH
A Cable Replacement Technology
It’s wireless.
It’s inexpensive.
You don’t have to think about it.
Personal Ad Hoc Networks
Cable Replacement
Landline
Data/Voice Access Points
What Can Bluetooth Do For You?
Connection via bluetooth
APPLICATION EXAMPLES:
A Bluetooth–mouseA Bluetooth-keyboard Cable-less connection to
printersUse e-mail while your portable
PC is still in the briefcase!
BLUETOOTH DEFINITIONS
Single-slave Multi-slave (up to 7 “slaves”on one master) Scatternet
PICONETS A set of
BLUETOOTH devices sharing a common channel is called a PICONET
SCATTERNETS Scatternets are
two or more independent and non-synchronized piconets that communicate with each other by making bridge nodes.
ARCHITECTURE STRUCTURE
COMPONENTS OF ARCHITECTURE
Radio Front End (RF) Defines characteristics of RF, frequency bands,
channel arrangements & receiver sensitivity level.
Logical Link Control & Adaptation Protocol (L2CAP)
For transporting bigger data products to higher layer.
Service Discovery Protocol (SDP) To query and discover services supported by peer
Bluetooth devices.
Link Manager Protocol (LMP) PICONET, master slave role assignments and link
configuration. Security configuration by device authentication using
secret key.
RFCOMM Provides transport capabilities for high level services.
CREATION OF A SCATTERNET
A Master orSlave can
becomeSlave in anotherpiconet by beingpaged by theMaster in thisother piconet.
NETWORK FORMATION AND CONTROL
ADVANTAGES OF BLUETOOTH
Bluetooth is used widely across countries and almost by everyone.
It has simple features. It is free of charge and not added to our
budget. It allow us to stay cord free. It has the ability to keep our information
private. Bluetooth isn't requires a line of sight.
Advantages (contd.)
It provides ranges of up to 100 meters.
Bluetooth is also low power and low processing with an overhead protocol.
To put it short, the applications with Bluetooth are virtually endless.
DISADVANTAGES OF BLUETOOTH
More battery power when Bluetooth is enable on the phone all day.
Throughout all device, when using Bluetooth internet, the connection sometimes may run very slow so Bluetooth internet is not highly suggested for all cases.
The only real downside s are the data rate and security. Infrared can have data rates of up to 4 M Bps, which provides very fast rates for data transfer, while Bluetooth only offers 1 M Bps
CONCLUSION
Bluetooth is a short range radio link wireless technology used to connect various device by a invisible link getting rid of wires.
Last but not the least, WHENEVER THINK OF WIRELESS,”THINK BLUETOOTH”, this is the best way of communication.
BIBLIOGRAPHY
WIKIPEDIA www.bluetooth.com
E-book on Wireless Lan Techniques-RF, Wi-Fi, Bluetooth.
E-book on Introduction of Bluetooth.
Wireless Technology By-INTEL.
E-book on Bluetooth Security.