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6/29/20161 BLUETOOTH A WAY TO WIRELESS COMMUNICATION
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6/29/20162 B luetooth U C E, BURLA
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6/29/20163 O utline Introduction Difference Architecture Communication Problems Conclusion
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6/29/20164 I ntroduction Bluetooth Wireless communication History
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6/29/20165 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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6/29/20166 D ifference IEEE 802.11 IrDA Less range Max speed 4Mb/s Line of sight protocol
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6/29/20167 Comparison Peak Data Rate RangeRelative CostVoice network support Data network support IEEE 802.112 Mbps50mMediumVia IPTCP / IP IrDA16 Mbps < 2m LowVia IPVia PPP Bluetooth1 Mbps < 10m MediumVia IP and cellularVia PPP H ome RF 1.6 Mbps50m Medium Via IP and PSTN TCP / IP Table 1: (ref -> www.mobileinfo.com)
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6/29/20168 A rchitecture Fig 1. Piconet [5]
![6/29/20168 A rchitecture Fig 1. Piconet [5]](http://images.slideplayer.com/39/10850143/slides/slide_8.jpg "6/29/20168 A rchitecture Fig 1. Piconet [5]")
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6/29/20169 Fig 2 Scatternet [5]
![6/29/20169 Fig 2 Scatternet [5]](http://images.slideplayer.com/39/10850143/slides/slide_9.jpg "6/29/20169 Fig 2 Scatternet [5]")
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6/29/201610 01278 2.402 GHz2.480 GHz f=2.402+nMHZ, n=0, 1…..., 78 Fig 3 Frequency Division [7]
![6/29/ GHz2.480 GHz f=2.402+nMHZ, n=0, 1…..., 78 Fig 3 Frequency Division [7]](http://images.slideplayer.com/39/10850143/slides/slide_10.jpg "6/29/ GHz2.480 GHz f=2.402+nMHZ, n=0, 1…..., 78 Fig 3 Frequency Division [7]")
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6/29/201612 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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6/29/201613 C ommunication
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6/29/201614 P roblems Bluejacking Bluesnarfing Bluespamming Low data rate Only point to point
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6/29/201615 C onclusion 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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6/29/201616 R eferences Computer Networks by A.S. Tanenbaum www.sig.com www.sig.org www.techweb.com Paper by Patricia McDermott-Wells
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6/29/201617 R eferences www.ericcson.com “Bluetooth” presentation by ZHE ZHU College of Technology, University of Houston www.mobileinfo.com
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