bluetooth, infrared

& Infrared Technology

Presented By:Nitin Rana - 58

Pranav Priyadarshi-67Prashant Kumar -68Prashant Priyam -70Priyank Suman -71Priyanka Kumari -72

Name taken from the 10th century King Herald Bluetooth

King Bluetooth attached all Scandinavian people when they were torn apart due to wars and feuding lans.

Bluetooth was first developed in Scandinvia

It is also able to unite differing industries

E.g. cell phone, computer, automotive markets

It was officially introduced in 1998

Basic purpose was to be a wire replacement technology

In 2003 the bluetooth 2.1 intorduced

In 2004 bluetooth 2.0+EDR introduced

Devices using BT+EDR entered in 2005

Bluetooth uses wireless protocol for the devices

It forces devices to agree on When bits are sent How many will be sent at a time How devices can sure message received

It is short range wireless ,secure and international std. technology

It provides communication between bluetooth enabled device.

It uses radio waves that operates @2.4GHz

The master bluetooth device can communicate with seven other bluetooth enabled device.

Bluetooth 3.0 provides high speed connections

It also supports VOIP technology

Typical bluetooth device consist of RS trenceiver, protocol stack and baseband

It was able to connect computer with printer and other nodes

Bluetooth provides speed of 1-2 Mbps

It can be used internally as well as externally

Bluetooth enabled devices can change their frequency rapidly so they can be saved from external interference

For security it uses pin code and 128 encryption

It uses AFH facility to control interference

AFH works within the spectrum to take advantage of the available frequency

Range of Bluetooth• Class 3 radios – have a range of up to 1 meter or 3

feet• Class 2 radios – most commonly found in mobile

devices – have a range of 10 meters or 33 feet• Class 1 radios – used primarily in industrial use

cases – have a range of 100 meters or 300 feet

• Bluetooth technology operates in the unlicensed industrial, scientific and medical (ISM) band at 2.4 to 2.485 GHz, using a spread spectrum, frequency hopping, full-duplex signal at a nominal rate of 1600 hops/sec

Logical Link Control andAdaptation protocol (L2CAP)

Link Manager (LM) protocol

Host to

Controller Interface

(HCI)

Host to

Controller Interface

(HCI)

Advantage• It is wireless technology

• It is safe and convenient

• Made networking portable

• It makes life easier

DISADVANTAGE1. Battery use2. Bluetooth Internet speed is slow

Infrared technologyIt was established in 1993Purpose was to provide wireless connectivityIt allows point to point user access modelFrequency id THzCommunication is possible due to tansceiver

IR can be used over longer interconnections and has an applicability to local area networks (LANs)

Maximum distance is 1mileMaximum bandwidth is 16 MbpsIt is secure networking applicationIn future it will be implemented in BANK,ATM,

Credit Cards etc.

It is more reliableSome manufacturer provides IrDA port that allows

wireless keyboard to communicate with PCInfrared signals defined by IrDA transmit through

line of sightStandard originally data transmission rate is

75Kbps for a distance up to 8 meterNow it is 4Mbps.