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›› 2010, Vol. 27 ›› Issue (6): 818-823.DOI: 10.7523/j.issn.2095-6134.2010.6.013

• Research Articles • Previous Articles     Next Articles

Study on optimization of communication radii of nodes in hierarchically clustered wireless sensor networks

SUN Bo1, GAO Sui-Xiang2, LU Qing1   

  1. 1. School of Economics and Management, Shanghai University of Electric Power, Shanghai 201300, China;
    2. Graduate University, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2010-04-21 Online:2010-11-15

Abstract:

This study focuses on how to optimize the communication radii of sensor nodes in hierarchically clustered sensor networks to minimize the total energy consumption. The energy model is E=a(dα+c), where R denotes the range of sensor networks and K is the number of layers. When the radii of sensor nodes are fixed, the upper bound of the optimal radii of sensor nodes is proved to be  α c/(α-1)  if α=2,c≤4R2, or if α=4, c≤4R2,K≤ 6 R. When the radii are adjustable and α=2, the radii are obtained by minimizing the average energy consumption layer by layer.

Key words: wireless sensor networks, clustering, energy consumption, communication radius

CLC Number: