Bluetooth
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Bluetooth is a short-range wireless technology that allows data exchange between devices like phones, laptops, and printers. It was developed in 1994 and uses radio waves in the 2.4 GHz band to connect devices within a 10-100 meter range. Bluetooth devices can form ad-hoc networks called piconets to share data and voice signals. While convenient, Bluetooth has limitations like low data rates, short range, and potential security issues if not configured properly. It finds applications in wireless headsets, car infotainment systems, and wireless speakers. Future developments aim to improve bandwidth, reduce interference, and streamline connection setup while maintaining compatibility.
Bluetooth
- 1. Bluetooth Presented By: Bhushan Bagde
- 2. Contents Definition of Bluetooth. History of Bluetooth. Characteristics of Bluetooth. Working of Bluetooth. Security Features of Bluetooth. Advantages of Bluetooth. Disadvantages of Bluetooth. Application of Bluetooth. Future of Bluetooth. Conclusion
- 3. Definition of Bluetooth. Bluetooth is a short range and low power wireless technology originally developed for exchanging data over short distances from fixed and mobile devices, creating personal area network.
- 4. History of Bluetooth The word “Bluetooth” is taken from the 10th century Danish King Harlard, who unified Scandinavian people tribes into a single kingdom. Bluetooth was named because – Bluetooth technology was developed in Scandinavian. Bluetooth technology was able to unite different industries such as cell phone, computing and automotive markets. The Bluetooth specification was first developed in 1994 by Ericsson Mobile Communication Ltd. 5 Companies (Ericsson, Nokia, Intel, Toshiba, & IMB) joined to form Bluetooth Special Interest Group (SIG) in 1998. In 1999, first specification of Bluetooth i.e. Bluetooth 1.0 is released.
- 5. Characteristics of Bluetooth Bluetooth stands for Short-range transmission of digital voice and data. Frequency Range: ISM (Industrial, Scientific and Medical Radio Bands) 2200MHz – 2400 MHz Bluetooth used a Radio Technology called Frequency Hopping Spread Spectrum. Vanishes the need of chord and wire. Range of Connection : 10 m – 100 m. Supports data rate of : 1Mb/s.
- 6. Characteristics of Bluetooth There are three classes of Bluetooth devices. Class 3 Radio: have range up to 1 meters or 3 feet. Class 2 Radio: most commonly found in mobile devices – have range of 10 metes or 30 feet. Class 1 Radio: used primarily in Industrial use cases – have range of 100 meters or 300 feet.
- 7. Working of Bluetooth Uses short range of RF spectrum at 2.45 GHz. Uses quick frequency hoping packet switch Protocol. Transceiver has a unique 48 bit address. Uses IEEE 802 Standards. Several Bluetooth devices can form an AD-HOC Network called a “PICONET”. In PICONET, one device is act like a master (sets frequency hoping behavior) and the others as slaves.
- 9. Working of Bluetooth More than one PICONET is called SCATTERNET. Up to Eight devices are allowed in PICONET. Each PICONET is identified by a different frequency hopping structure. Connections can be made up to 10 meters or can be extended to 100 meters. Power consumption is 0.3 mA.
- 10. Security Features of Bluetooth Bluejacking Funny type message sent to people’s Bluetooth enabled device without owner permission. Bluesnarfing Hacker’s gaining access to people Bluetooth enabled device mainly to made some harm. Allows hackers to send message, make phone calls etc. The hacker to be within 30 ft rage To avoid set your phone to non-discoverable mode Bluebugging Advanced level of hacking with technology use Hacker’s gaining access to people Bluetooth enabled device mainly to made some harm. Allows hackers to send message, make phone calls etc. Also 30 ft range
- 11. Advantages of Bluetooth Bluetooth devices are wireless Bluetooth technology is inexpensive Bluetooth is automatic Share voice and data Low energy consumption Accessible from anywhere
- 12. Disadvantage of Bluetooth Low data rate. Short range. Low security. Interference with other devices.
- 13. Applications of Bluetooth Laptops Cellular phones Personal digital assistants Headsets Printers Car GPS etc…
- 14. Future of Bluetooth Radio2 Working Group • Working to overcome bandwidth, interference, and connection setup issues while remaining compatible with current radio Other Working Groups • Audio/Video, Car, Co-existence, ISDN, Local Positioning, Personal Area Networking, Printing Study Groups • Industrial Automation
- 15. Conclusion A new global standard for data and voice Eliminates Cables . Low Power, Low range, Low Cost network devices. Bluetooth seems to have a bright future after reviewing its benefits and wide use. Further improvements are planned to be made in – Data Rates – Power Reduction – Range
- 16. References i. www.bluetooth.com ii. en.wikipedia.org/wiki/Bluetooth iii. www.google.com/images
- 17. THANK YOU