6/29/20161 BLUETOOTH A WAY TO WIRELESS COMMUNICATION

6/29/20162 B luetooth U C E, BURLA

6/29/20163 O utline Introduction Difference Architecture Communication Problems Conclusion

6/29/20164 I ntroduction Bluetooth Wireless communication History

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

6/29/20166 D ifference IEEE IrDA Less range Max speed 4Mb/s Line of sight protocol

6/29/20167 Comparison Peak Data Rate RangeRelative CostVoice network support Data network support IEEE 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 ->

6/29/20168 A rchitecture Fig 1. Piconet [5]

6/29/20169 Fig 2 Scatternet [5]

6/29/ GHz2.480 GHz f=2.402+nMHZ, n=0, 1…..., 78 Fig 3 Frequency Division [7]

6/29/201611

6/29/ 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

6/29/ C ommunication

6/29/ P roblems Bluejacking Bluesnarfing Bluespamming Low data rate Only point to point

6/29/ 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

6/29/ R eferences Computer Networks by A.S. Tanenbaum Paper by Patricia McDermott-Wells

6/29/ R eferences “Bluetooth” presentation by ZHE ZHU College of Technology, University of Houston