Presentation On Bluetooth

Presentation On Bluetooth

Made by:Nishchay Sharma Anubhav Bhargava

Introduction Ø Greatest synchronization and file transfer technologies. Ø Bluetooth technology is the key to moving files effortlessly off and on to various communication devices. Ø Bluetooth is a global de facto standard for wireless connectivity. Based on a low-cost, short-range radio link, Bluetooth cuts the cords that used to tie up digital devices. Ø When two Bluetooth equipped devices come within 10 meters range of each other, they can establish a connection together. And because Bluetooth utilizes a radio-based link, It doesn't require a line-of-sight connection in order to communicate.

Why it’s Name is called Bluetooth? ØScandinavian countries have been leading the world in wireless communications for a long time now; and Bluetooth technology was named after a Scandinavian historical figure: King Harald Bluetooth, a famous Danish king of the 10th century; who united Denmark and introduced Christianity to the country.

History Ø 1994 - Ericsson releases Bluetooth specification. Ø Early 1998 - Bluetooth Special Interest Group (SIG) was formed. Ø July 1999 - Bluetooth 1.0 Specification Release. Ø 2000 - 2001 - Ongoing work on Bluetooth 2.0 Specification Ø Bluetooth became an IEEE (Institute of Electrical and Electronics Engineers) standard during 2002.

What is Bluetooth? ØLow bandwidth wireless networking technology ØDesigned primarily to replace cables for communication between personal computing/communication devices ØUsed for both voice and data communications ØCommon standard for wireless communications between cell phones and PDAs, headsets

In Home wired Network v/s In Bluetooth Network

In Home Wired Network x DSL Cordless communicator

Digital cable networ k

Internet and entertainment gateway

Internet Gateway Home Intranet

Display Pad Entertainment gateway Digital satellite networ k

In Home Bluetooth Network Office Laptop

Connect to office LAN Email Home Printer access Surf from anywhere Share files

Main Home PC

Internet Service Pipe

Family Car Trip Navigation downloads Download News/Entertainment 3 cups flour 1 cup grated chocolate 1 cup sugar 1 stick butter 1/2 cup chopped walnuts minutes.

Fridge Pad Family Calendar Recipe Display Build shopping lists Voice messaging Intercom

Personal display pad Shopping lists Fast food ordering Book/News/Home PIM

Cordless Phone Remote Speech recognition Call by name Build shopping lists Home PBX

Bluetooth Devices •Mobile Phones •Video Games •Keyboards •Headsets •PDA’S •Bluetooth USB port

Bluetooth Actions ØBluetooth will be used for personal area networks ØVery small range networks between cell phones, PDAs, MP3 players, etc. and computers ØBuilt-in voice channels will allow cordless telephony and headset applications ØPDA-computer synchronization, wireless home networking, connection of keyboards, modems, cameras etc. are all possible ØBluetooth even unlock your car

Bluetooth Makes life easier ØIn office You arrive at the office and put down your briefcase, while your Personal Digital Assistant (PDA) automatically synchronizes with your desktop PC and transfers files, e-mails and schedule information. While in a meeting, you access your PDA to send your presentation to the electronic whiteboard. You record meeting minutes on your PDA and wirelessly transfer these to the attendees before they leave the meeting.

ØAt Home Upon arriving at your home, the door automatically unlocks for you, the entry way lights come on, and the heat is adjusted to your pre-set preferences.

An alarm notifies you that your toddler has just left the house

ØIn Public Places

You arrive at the airport. A long line is formed for ticketing and seat assignment. You avoid the line, using your PDA to present an electronic ticke and automatically select your seat. The airline's on-line system checks identification via the "ID-tag" feature built into your PDA and confirms your reserved seat. You arrive at the hotel. As you enter, you are automatically checked in and your room number and electronic key are transferred to your PDA. As you approach the room, the door automatically opens.

ØAnd in Car As you approach your vehicle, the door unlocks automatically, the radio tunes in your favorite station, and the seat adjusts to your preferred settings. As you enter your vehicle, you are reminded of the items on your daily calendar and the results of a recent diagnostic test of your vehicle.

You receive a new message en route, which is verbally transmitted to you via the vehicle's speakerphone

Bluetooth ØFeatures

Bluetooth Features

Technical ØNormal range 10 m Specifications ØOptional range 100 m

ØNormal transmitting power 1 mw ØOptional transmitting power 100 mw ØReceiver sensitivity -70 dBm ØFrequency band 2.4 GHz ØGross data rate 1Mbps ØMax. Data transfer 721 +56 kbit/3 voice channels ØPower consumption, standby 20 µA ØPower consumption, max. 30 µA Packet switching protocol based on a frequency hop scheme with 1600 hops/s

Bluetooth Protocol

How Do Bluetooth Devices Deal With Interference? ØRadio waves can pick up noise from nearby devices like microwave ovens especially since the ISM band is unlicensed. This is where a technique called "frequency hopping" comes into the picture. ØBluetooth has chosen to provide an acknowledgment-based scheme with automatic repeat request (ARQ). What is transferred during a Bluetooth communication are packets. With frequency hopping, after the transmission or reception of a packet, the device hops or changes to a different frequency. The signal frequency changes about 1600 times per second. ØIn addition, it uses smaller packets and the header information in packets which is very critical to the link operation is protected first by a cyclic redundancy check and further a 1/3 rate Forward Error Check (FEC) is applied, which repeats each bit three times.

Parallel Technologies There is no single competitor covering the entire concept of the Bluetooth wireless technology but in certain market segments other technologies exist. Which are as follows:-

IrDA For cable replacement the infrared standard IrDA has been around for some years and is quite well known and widespread. IrDA is faster than the Bluetooth wireless technology but is limited to point-to-point connections and above all it requires a clear line-of-sight. In the past IrDA has had problems with incompatible standard implementations, a lesson that the Bluetooth SIG has learnt.

Wireless LAN Wireless LANs based on the IEEE 802.11 standard. The technology is used to replace a wired LAN throughout a building. The transmission capacity is high and so is the number of simultaneous users. On the other hand, compared to Bluetooth wireless technology, it is more expensive and power consuming, and the hardware requires more space. It is therefore not suitable for small mobile devices.

Parallel Technologies Home RF The Home RF also uses the 2.4 GHz radio band and has many similarities to the Bluetooth wireless technology. Home RF can operate ad hoc networks (data only) or be under the control of a connection point coordinating the system and providing a gateway to the telephone network (data & voice). The hop frequency is 8 Hz while a Bluetooth link hops at 1600 Hz.

Ultra-Wideband Radio Ultra-Wideband Radio (UWB) is a new radio technology still under development. Short pulses are transmitted in a broad frequency range. The capacity appears to be high while power consumption is expected to be low.

Comparison between Technologies

Security

Future of Bluetooth

The Dream Ø You enter a bus and your bus fare is automatically paid by your mobile phone Ø You could even use your mobile phone to control the locking and alarm on your car, as well as integrate it with the car's stereo so you can talk hands free while you are driving.

ØThe Possibilities are Endless…

Thank You