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Design of Energy Efficient MAC Protocol for Delay Sensitive Application over Wireless Sensor Network  

Oh, Hyung-Rai (포항공과대학교 컴퓨터공학과 멀티미디어통신시스템 연구실)
Song, Hwang-Jun (포항공과대학교 컴퓨터공학과 멀티미디어통신시스템 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.11B, 2009 , pp. 1169-1177 More about this Journal
Abstract
This paper presents an energy efficient MAC protocol for delay-sensitive data transmission over wireless sensor network. In general, energy consumption and delay depend on Channel Monitoring Interval and data sensing period at each sensor node. Based on this fact, we propose a new preamble structure to effectively advertise Channel Monitoring Interval and avoid the overhearing problem. In order to pursue an effective tradeoff between energy consumption and delay, we also develop a Channel Monitoring Interval determining algorithm that searches for a sub-optimal solution with a low computational complexity. Finally, experimental results are provided to compare the proposed MAC protocol with existing sensor MAC protocols.
Keywords
Wireless Sensor Network; Sensor MAC Protocol; Energy; Delay;
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