What is Blue Tooth ?What is Blue Tooth ?Blue tooth is a cable replacement technology Blue tooth is a cable replacement technology that can be used to connect almost any device that can be used to connect almost any device to any other devices. to any other devices.

Blue tooth is the implementation of a protocol Blue tooth is the implementation of a protocol defined by IEEE 802.15 standard . defined by IEEE 802.15 standard .

WPAN Wireless Personal Area Network.WPAN Wireless Personal Area Network.

Short Range wireless (10 – 100 m).Short Range wireless (10 – 100 m). Low Power Transmission (1 – 100 m W).Low Power Transmission (1 – 100 m W). Lower Data Rates < 1 Mbps like audio, Lower Data Rates < 1 Mbps like audio,

text, graphics & even Videotext, graphics & even Video Using 2.4 GHz ISM Band.Using 2.4 GHz ISM Band. FHSS over 79 Chls (1 MHz each) , 1600 FHSS over 79 Chls (1 MHz each) , 1600

hops/sec , to avoid freq selective fading & hops/sec , to avoid freq selective fading & provide security.provide security.

Non Line Of sight communication.Non Line Of sight communication.

What is Blue Tooth ?What is Blue Tooth ?

Blue Tooth Logo showing Blue tooth Blue Tooth Logo showing Blue tooth enabled devices i.e. home appliances ,enabled devices i.e. home appliances ,

Laptop/PDA/ Palm top/Desktop etcLaptop/PDA/ Palm top/Desktop etc

History Of Blue ToothHistory Of Blue Tooth

Blue Tooth Technology was originally Blue Tooth Technology was originally started by the Eriksson company . It is started by the Eriksson company . It is named for Blaatand King of Denmark named for Blaatand King of Denmark (Blue Tooth in English).(Blue Tooth in English).

SIGSIG (Special Interest Group) in May 1998 (Special Interest Group) in May 1998 Founding Members :- Erikson, Toshiba, Founding Members :- Erikson, Toshiba,

Intel, IBM, Nokia.Intel, IBM, Nokia. Now all of biggest companies in Telecom Now all of biggest companies in Telecom

Business joined the SIG – 1500 Members.Business joined the SIG – 1500 Members.

Blue Tooth ArchitectureBlue Tooth Architecture

Blue Tooth defines two types of Networks.Blue Tooth defines two types of Networks.

1- Pico Nets (Adhoc Network ) 1- Pico Nets (Adhoc Network ) A small net.A small net. A Piconet can have up to 8 stations – one of A Piconet can have up to 8 stations – one of

which is called which is called MasterMaster, the rest are called , the rest are called ActiveActive Slaves.Slaves.

All the stations synchronize their clocks / hoping All the stations synchronize their clocks / hoping sequences with (as set by Master).sequences with (as set by Master).

Pico Net can have only one Master Station.Pico Net can have only one Master Station.

Parked SlaveParked Slave

Although a Pico net can have a max of Although a Pico net can have a max of seven slaves , an additional slaves can be seven slaves , an additional slaves can be in parked state .in parked state .

A Slave in Parked state is synchronized with A Slave in Parked state is synchronized with Master but cannot take part in Master but cannot take part in communication until it is moved from the communication until it is moved from the parked state in to active state.parked state in to active state.

Pico NetPico Net

Pico NetPico Net

The communication The communication between the master & between the master & the slaves can be one the slaves can be one to one & one to many.to one & one to many.

A Slave may only A Slave may only communicate with communicate with Master& may only Master& may only communicate when communicate when granted permission by granted permission by the Master.the Master.

Scatter NetScatter Net

Piconets can be combined to form what is called Piconets can be combined to form what is called a Scatter Net . A slave station in one piconet can a Scatter Net . A slave station in one piconet can become the master in another piconet.become the master in another piconet.

This station can receive messages from the This station can receive messages from the master of first piconet (as a slave) and acting as master of first piconet (as a slave) and acting as a master deliver it to slaves in the second a master deliver it to slaves in the second piconet.piconet.

A station can be a member of two piconets.A station can be a member of two piconets.

Co-existence Of BT in Wi-Fi N/WsCo-existence Of BT in Wi-Fi N/Ws

Wi-Fi Networks 802.11 use also 2.5 GHz Wi-Fi Networks 802.11 use also 2.5 GHz Band same as used in Blue tooth Band same as used in Blue tooth Networks.Networks.

There is a possible chance of interference There is a possible chance of interference with each other.with each other.

Can be controlled by reducing transmit Can be controlled by reducing transmit power of Blue tooth devices ( 1-100 mW) power of Blue tooth devices ( 1-100 mW) while in case of Wi-Fi transmitters (1-4 W).while in case of Wi-Fi transmitters (1-4 W).

Blue Tooth ApplicationsBlue Tooth Applications

Internet Bridge:Internet Bridge:

Use your portable PC to surf internet any Use your portable PC to surf internet any where.where.

Whether you are connected wirelessly Whether you are connected wirelessly through mobile fone or through a wired through mobile fone or through a wired connection (PSTN, xDSL, ISDN)connection (PSTN, xDSL, ISDN)

Blue Tooth ApplicationsBlue Tooth Applications

Data Access Point:Data Access Point:

LAN access LAN access replaces a cable replaces a cable with a blue tooth with a blue tooth link.link.

Interactive Conference:Interactive Conference:In meeting /conference , you can share information In meeting /conference , you can share information

instantly with other participants. instantly with other participants. Users are able to transfer files a business cards, Users are able to transfer files a business cards,

fone records or larger files between them.fone records or larger files between them.You can also operate a projector remotely without You can also operate a projector remotely without

wire connectors.wire connectors.NLOS Environment NLOS Environment Blue tooth can replace a wired /IR link to Blue tooth can replace a wired /IR link to

transferring files b/w devices.transferring files b/w devices.Professor & class example.Professor & class example.

Blue Tooth ApplicationsBlue Tooth Applications

Delayed Messages/Emails:Delayed Messages/Emails:

Compose email on yours PC while you are Compose email on yours PC while you are in plan . When you land & switch yours in plan . When you land & switch yours mobile fone ON , the messages will be mobile fone ON , the messages will be sent immediately.sent immediately.

Cordless DesktopCordless Desktop

Connect your Laptop/Desktop cordlessly to Connect your Laptop/Desktop cordlessly to printer, scanner , keyboard & mouse.printer, scanner , keyboard & mouse.

Blue Tooth ApplicationsBlue Tooth Applications

Blue Tooth ApplicationsBlue Tooth Applications

The Ultimate Headset :The Ultimate Headset :

The blue tooth headset can create The blue tooth headset can create an audio link to other Blue tooth an audio link to other Blue tooth equipped devices.equipped devices.

Make & receive calls from headset Make & receive calls from headset connected remotely to cell connected remotely to cell fone/PSTN.fone/PSTN.

Automatic SynchronizationAutomatic Synchronization

Blue tooth can provide convenient file Blue tooth can provide convenient file synchronization between several devices.synchronization between several devices.

For Example :- Office desktop & PDA , For Example :- Office desktop & PDA , Home Desktop & PDA.Home Desktop & PDA.

Blue Tooth ApplicationsBlue Tooth Applications

Health Care Center:Health Care Center:

Monitoring devices can communicate with Monitoring devices can communicate with sensor devices in IC Units .sensor devices in IC Units .

Security Devices :Security Devices :

Installed Sensors i.e. door opening, smoke Installed Sensors i.e. door opening, smoke detector for security purposes may detector for security purposes may communicate with Main Room. communicate with Main Room.

Blue Tooth ApplicationsBlue Tooth Applications

Misc Applications:Misc Applications:

A BT enabled PDA can be used for A BT enabled PDA can be used for accessing flight information at an airport.accessing flight information at an airport.

Ordering of an electronic menu at a Ordering of an electronic menu at a Resturant.Resturant.

Obtaining information about players when Obtaining information about players when attending a sport event.attending a sport event.

Blue Tooth ApplicationsBlue Tooth Applications

In shopping Mall, it will provide all In shopping Mall, it will provide all information about items to be sold.information about items to be sold.

Blue Tooth Home Network:Blue Tooth Home Network:When you are entering in yours home , you When you are entering in yours home , you

can open garage door, home door can open garage door, home door electronically , turn on home appliances i.e electronically , turn on home appliances i.e oven, lights, fans, ACs.oven, lights, fans, ACs.

To set the alarmTo set the alarmJoy sticks & Loud speakers, KEY BOARDSJoy sticks & Loud speakers, KEY BOARDS

Blue Tooth ApplicationsBlue Tooth Applications