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An Energy Efficient and Fair MAC Protocol Using Preamble Counting for Wireless Sensor Networks  

Lee, Dong-Ho (광운대학교 전자통신공학과)
Chung, Kwang-Sue (광운대학교 전자통신공학과)
Abstract
Since wireless sensor networks consist of nodes with the constrained battery, energy efficient MAC operation is one of the important issues. Low duty cycle operation is critical to conserve energy in wireless sensor network MAC protocol. Some paper proposed a new approach to low power listening, which employs a short preamble to further reduce energy consumption and to reduce latency. But short preamble suffers from unfair channel access problem since there was no consideration for contention between transmission nodes. Preamble counting proposes a solution to each of these problems by employing node selection information. Simulation results show that the preamble counting provides an improved energy efficiency and fairness of packet delivery.
Keywords
Wireless Sensor Networks; MAC protocol; Duty Cycle; Short Preamble;
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