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BLUETOOTH

BLUETOOTH. A WAY TO WIRELESS COMMUNICATION. B luetooth. U C E, BURLA. O utline. Introduction Difference Architecture Communication Problems Conclusion. I ntroduction. Bluetooth Wireless communication History. Specification of Bluetooth. Operates at 2.4 Ghz 79 Channels

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BLUETOOTH

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  1. BLUETOOTH A WAY TO WIRELESS COMMUNICATION

  2. Bluetooth U C E, BURLA

  3. Outline • Introduction • Difference • Architecture • Communication • Problems • Conclusion

  4. Introduction • Bluetooth • Wireless communication • History

  5. Specification of Bluetooth • Operates at 2.4 Ghz • 79 Channels • Uses FHSS, GFSK modulation • 1600 hops/sec • Can have 8 devices in a piconet • Non line of sight • Low cost, Short range

  6. Difference • IEEE 802.11 • IrDA • Less range • Max speed 4Mb/s • Line of sight protocol

  7. Comparison Table 1: (ref -> www.mobileinfo.com)

  8. Architecture Fig 1. Piconet [5]

  9. Fig 2 Scatternet [5]

  10. 0 1 2 78 2.402 GHz 2.480 GHz f=2.402+nMHZ, n=0, 1…..., 78 Fig 3 Frequency Division [7]

  11. Radio Layer: Design of Bluetooth transceivers. • Baseband Layer: • SCO • ACL Link Management Layer: manages the properties of the air interface link between device L2CAP: provides the interface between the higher- layer protocols

  12. Communication

  13. Problems • Bluejacking • Bluesnarfing • Bluespamming • Low data rate • Only point to point

  14. Conclusion Bluetooth technology encompasses several key points that facilitate its widespread adoption: • Its specification is publicly available and free . • Its short-range wireless capability allows peripheral devices to communicate replacing cables that use connectors. • Bluetooth supports both voice and data. • Bluetooth uses an unregulated frequency band

  15. References • Computer Networks by A.S. Tanenbaum • www.sig.com • www.sig.org • www.techweb.com • Paper by Patricia McDermott-Wells

  16. References • www.ericcson.com • “Bluetooth” presentation by ZHE ZHU College of Technology, University of Houston • www.mobileinfo.com

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