Duty cycle optimization for a multi hop transmission method in wireless sensor networks

  • Authors:
  • Kyong-Tak Cho;Saewoong Bahk

  • Affiliations:
  • School of Electrical Engineering and Computer Science, INMC, Seoul National University, Seoul, Korea;School of Electrical Engineering and Computer Science, INMC, Seoul National University, Seoul, Korea

  • Venue:
  • IEEE Communications Letters
  • Year:
  • 2010

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Abstract

Several synchronous and asynchronous MAC protocols have been proposed for wireless sensor networks (WSNs). Among these, RMAC [2] exploits a control frame named Pioneer (PION) to set up the path and transmit a data packet through multiple hops in a single duty cycle. In this letter, we numerically analyze the average packet latency of RMAC in a probabilistic manner, which can be easily applied for any multi hop transmission methods. To evaluate the accuracy of the numerical analysis, we compare the analysis results with the ns-2 simulation results. Then we mathematically obtain an optimal duty cycle value that minimizes the average power consumption while satisfying a given delay bound.