The document discusses the history and technology of Bluetooth and infrared wireless communication. It describes how Bluetooth was developed in Scandinavia in the 1990s to connect devices wirelessly like computers and printers. Bluetooth uses short-range radio transmission at 2.4GHz to connect up to 7 devices within a 10-100 meter range. Infrared technology also enables wireless connectivity up to 1 mile using line-of-sight transmission in the terahertz frequency range, and has applications in local area networks and banking. Both technologies allow devices to communicate without wires but Bluetooth has now become more widely used.

1. & Infrared Technology Presented By: Nitin Rana - 58 Pranav Priyadarshi-67 Prashant Kumar -68 Prashant Priyam -70 Priyank Suman -71 Priyanka Kumari -72

2. Name taken from the 10 th century King Herald Bluetooth King Bluetooth attached all Scandinavian people when they were torn apart due to wars and feuding lans.

3. Bluetooth was first developed in Scandinvia It is also able to unite differing industries E.g. cell phone, computer, automotive markets

4. It was officially introduced in 1998 Basic purpose was to be a wire replacement technology

5. In 2003 the bluetooth 2.1 intorduced In 2004 bluetooth 2.0+EDR introduced Devices using BT+EDR entered in 2005

6. 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

7. 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

8. The master bluetooth device can communicate with seven other bluetooth enabled device. Bluetooth 3.0 provides high speed connections It also supports VOIP technology

9. Typical bluetooth device consist of RS trenceiver, protocol stack and baseband It was able to connect computer with printer and other nodes

10. 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

11. 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

12. 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

13. 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

14. Logical Link Control and Adaptation protocol (L2CAP) Link Manager (LM) protocol Host to Controller Interface (HCI)

15. Advantage It is wireless technology It is safe and convenient Made networking portable It makes life easier

16. DISADVANTAGE Battery use Bluetooth Internet speed is slow

18. Infrared technology It was established in 1993 Purpose was to provide wireless connectivity It allows point to point user access model Frequency id THz Communication is possible due to tansceiver

19. IR can be used over longer interconnections and has an applicability to local area networks (LANs) Maximum distance is 1mile Maximum bandwidth is 16 Mbps It is secure networking application In future it will be implemented in BANK,ATM, Credit Cards etc.

20. It is more reliable Some manufacturer provides IrDA port that allows wireless keyboard to communicate with PC Infrared signals defined by IrDA transmit through line of sight Standard originally data transmission rate is 75Kbps for a distance up to 8 meter Now it is 4Mbps.