1. A WAY TO WIRELESS COMMUNICATION
BLUETOOTH
A WAY TO WIRELESS COMMUNICATION
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2. School of Information Technology
Bluetooth
Presented By:
Sourabh Gupta
05IT6016
Mtech (IT)
Under Guidance:
Prof. C.R.Mandal
School of Information Technology
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3. Outline Introduction Difference Architecture Communication Problems
Conclusion
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4. Introduction
Bluetooth
Wireless communication
History
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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
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6. Difference IEEE 802.11 IrDA Less range Max speed 4Mb/s
Line of sight protocol
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7. Comparison Table 1: (ref -> www.mobileinfo.com) < 2m < 10m
Peak Data Rate
Range
Relative Cost
Voice network support
Data network support
IEEE
2 Mbps
50m
Medium
Via IP
TCP / IP
IrDA
16 Mbps
< 2m
Low
Via PPP
Bluetooth
1 Mbps
< 10m
Via IP and cellular
Home RF
1.6 Mbps
Via IP and PSTN
Table 1: (ref ->
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8. Architecture
Fig 1. Piconet [5]
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9. Fig 2 Scatternet [5]
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10. 1 2 78
2.402 GHz
2.480 GHz
f=2.402+nMHZ, n=0, 1…..., 78
Fig 3 Frequency Division [7]
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12. 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
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13. Communication
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14. Problems Bluejacking Bluesnarfing Bluespamming Low data rate
Only point to point
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15. 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
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16. References Computer Networks by A.S. Tanenbaum www.sig.com www.sig.org
Paper by Patricia McDermott-Wells
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17. References www.ericcson.com
“Bluetooth” presentation by ZHE ZHU College of Technology, University of Houston
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