sunil bluetooth

8/9/2019 Sunil Bluetooth

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BLUETOOTH TECHNOLOGYPrepared By: Sunil


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Whats With the Name?

The name Bluetooth was named after 10th centuryViking king in Denmark Harald Bluetooth who unitedand controlled Denmark and Norway.

The name was adopted because Bluetooth wirelesstechnology is expected to unify the

telecommunications and computing industries


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Who Started Bluetooth?

Bluetooth Special Interest Group (SIG)

Founded in Spring 1998

By Ericsson, Intel, IBM, Nokia, Toshiba;

Now more than 2000 organizations joint the SIG


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What Is Bluetooth?

Bluetooth is an open standard for short-rangedigital radio to interconnect a variety of devices Cell

phones, PDA, notebook computers, modems,

cordless phones, pagers, laptop computers, printers,cameras by developing a single-chip, low-cost,radio-based wireless network technology


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Bluetooth

Simplifying communications between:- devices and the internet- data synchronization

Operates in licensed band at 2.4ghz

Uses frequency hoping spread spectrum Omni directional, no requiring line of sight Bluetooth offers data speeds of up to 1 Mbps up to 10

meters (Short range wireless radio technology ) Unlike IrDA, Bluetooth supports a LAN-like mode

where multiple devices can interact with each other. The key limitations of Bluetooth are security and

interference with wireless LANs. Short range wireless radio technology


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Bluetooth

Bluetooth is a PAN Technology

Offers fast and reliable transmission for

both voice and data

Support both packet-switching and circuit-switching


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Bluetooth

Personal Area Network (PAN) Bluetooth isa standard that will

Eliminate wires and cables between both

stationary and mobile devices Facilitate both data and voice

communications

Offer the possibility of ad hoc networks and

deliver synchronicity between personal

devices


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Bluetooth Topology

Bluetooth-enabled devices can automaticallylocate each other

Topology is established on a temporary and

random basis Up to eight Bluetooth devices may be

networked together in a master-slave

relationship to form a Piconet


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Cont.

One is master, which controls and setup thenetwork

All devices operate on the same channel and

follow the same frequency hopping sequence Two or more piconet interconnected to form ascatter net

Only one master for each piconet

A device cant be masters for two piconets

The slave of one piconet can be the master ofanother piconet


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A piconet

is an ad-hoc computer networkof devicesusing Bluetooth technology protocols toallow one masterdevice to interconnect

with up to seven active slave devices Up to 255 further slave devices can be

inactive, orparked, which the master device

can bring into active status at any time.


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A Typical Bluetooth Network Piconet

Master sends its globally unique 48-bit id andclock Hopping pattern is determined by the 48-bit device ID Phase is determined by the masters clock

Why at most 7 slaves? (because a three-bit MAC adress is used). Parked and standby nodes

Parked devices can not actively participate in thepiconet but are known to the network and can be

reactivated within some milliseconds 8-bit for parked nodesNo id for standby nodes Standby nodes do not participate in the piconet


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Bluetooth Frequency

Has been set aside by the ISM( industrial ,sientificand medical ) for exclusive use of Bluetooth wirelessproducts

Communicates on the 2.45 GHz frequency


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Frequency Selection

FH is used for interference mitigationand media access;

TDD (Test-Driven Development) is usedfor separation of the transmission

directions In 3-slot or 5-slot packets


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How Does It Work?

Bluetooth is a standardfor tiny, radio frequencychips that can be plugged

into your devices

The information is then transmitted to your device

These chips were designed totake all of the information thatyour wires normally send, and

transmit it at a specialfrequency to something

called a receiverBluetooth chip.


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Bluetooth Chip

RFBaseband

Controller

Link

Manager

Bluetooth Chip


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SPECIFICATIONS

Application Specifications These specifications include the following

Profiles Cordless Telephony

Serial Port

Headset Intercom

Dialup Networking

Fax

File Transfer Service Discovery Application

Generic Access


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PowerManagement Benefits

Cable Replacement Replace the cables for peripheral devices

Ease of file sharing

Panel discussion, conference, etc. Wireless synchronization

Synchronize personal information contained in the addressbooks and date books between different devices such asPDAs, cell phones, etc.

Bridging of networks Cell phone connects to the network through dial-up

connection while connecting to a laptop with Bluetooth.


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Bluetooth Devices

Telephones Headsets Computers Cameras

PDAs Cars Etc

Bluetooth will soon be enabled in

everything from:


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Bluetooth Products 1

Bluetooth-enabledPC Card


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Bluetooth-enabledPDA


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Bluetooth-enabledCell Phone


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Bluetooth-enabledHead Set


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Usage Models

Cordless computer Ultimate headset

Three-in-one phone

Interactive conference (file transfer)

Direct network access

Instant postcard


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Wireless Technologies

There are two technologies that have beendeveloped as wireless cable replacements:

Infrared (IRDA) and radio (Bluetooth).


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Why Not Infrared?

Intended for point to point links Limited to line of sight have a narrow angle (30 degree cone), Low penetration power

Distance covered is low(1 meter approx) have a throughput of 9600 bps to 4 Mbps IrDA has proven to be a popular technology with

compliant ports currently available in an array of

devices including: embedded devices, phones,modems, computers (PCs) and laptops, PDAs,printers, and other computer peripherals


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Compare Infrared, Bluetooth

Bluetooth Infrared

ConnectionType

SpreadSpectrum

Infrared, narrowbeam

Spectrum 2.4GHz Optical 850nano meters

Data Rate 1Mbps 16Mbps

Range 30 Feet 3 Feet

SupportedDevices

Upto 8 2


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Advantages (+)

Wireless (No Cables)

No Setup Needed

Low Power Consumption (1 Milliwat)

Industry Wide Support


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Disadvantages (-)

Short range (10 meters)

Small throughput rates- Data Rate 1.0 Mbps

Mostly for personal use (PANs) Fairly Expensive


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Bluetooths Future

The future of this technology becoming a standard is likely

With a strong industry pushing behind it, success is inevitable.

Often, with new technology, early changes meanreconstruction. Not With Bluetooth, instead, there will be

an improvement to the existing standard.

Bluetooth will soon be known as Bluetooth 2.2 as they are trying todevelop the product to better fulfill the needs of consumers


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The End

Thank You, for attending my presentation.

sunil bluetooth

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