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Sensors 2012, 12(8), 10930-10946; doi:10.3390/s120810930
Article

A Beacon Interval Shifting Scheme for Interference Mitigation in Body Area Networks

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,
 and
*
Department of Electrical Engineering, Korea University, Seoul 136-713, Korea
* Author to whom correspondence should be addressed.
Received: 10 April 2012 / Revised: 22 May 2012 / Accepted: 3 August 2012 / Published: 7 August 2012
(This article belongs to the Section Sensor Networks)
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Abstract

This paper investigates the issue of interference avoidance in body area networks (BANs). IEEE 802.15 Task Group 6 presented several schemes to reduce such interference, but these schemes are still not proper solutions for BANs. We present a novel distributed TDMA-based beacon interval shifting scheme that reduces interference in the BANs. A design goal of the scheme is to avoid the wakeup period of each BAN coinciding with other networks by employing carrier sensing before a beacon transmission. We analyze the beacon interval shifting scheme and investigate the proper back-off length when the channel is busy. We compare the performance of the proposed scheme with the schemes presented in IEEE 802.15 Task Group 6 using an OMNeT++ simulation. The simulation results show that the proposed scheme has a lower packet loss, energy consumption, and delivery-latency than the schemes of IEEE 802.15 Task Group 6.
Keywords: beacon interval shifting; body area network; IEEE 802.15.6; interference mitigation beacon interval shifting; body area network; IEEE 802.15.6; interference mitigation
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Kim, S.; Kim, S.; Kim, J.-W.; Eom, D.-S. A Beacon Interval Shifting Scheme for Interference Mitigation in Body Area Networks. Sensors 2012, 12, 10930-10946.

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