A WAY TO WIRELESS COMMUNICATION

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Presentation transcript:

A WAY TO WIRELESS COMMUNICATION BLUETOOTH A WAY TO WIRELESS COMMUNICATION 11/13/2018

School of Information Technology Bluetooth Presented By: Sourabh Gupta 05IT6016 Mtech (IT) Under Guidance: Prof. C.R.Mandal School of Information Technology 11/13/2018

Outline Introduction Difference Architecture Communication Problems Conclusion 11/13/2018

Introduction Bluetooth Wireless communication History 11/13/2018

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 11/13/2018

Difference IEEE 802.11 IrDA Less range Max speed 4Mb/s Line of sight protocol 11/13/2018

Comparison Table 1: (ref -> www.mobileinfo.com) < 2m < 10m Peak Data Rate Range Relative Cost Voice network support Data network support IEEE 802.11 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 -> www.mobileinfo.com) 11/13/2018

Architecture Fig 1. Piconet [5] 11/13/2018

Fig 2 Scatternet [5] 11/13/2018

1 2 78 2.402 GHz 2.480 GHz f=2.402+nMHZ, n=0, 1…..., 78 Fig 3 Frequency Division [7] 11/13/2018

11/13/2018

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 11/13/2018

Communication 11/13/2018

Problems Bluejacking Bluesnarfing Bluespamming Low data rate Only point to point 11/13/2018

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 11/13/2018

References Computer Networks by A.S. Tanenbaum www.sig.com www.sig.org www.techweb.com Paper by Patricia McDermott-Wells 11/13/2018

References www.ericcson.com “Bluetooth” presentation by ZHE ZHU College of Technology, University of Houston www.mobileinfo.com 11/13/2018