A Balanced Energy Depletion Strategy for the Energy Hole Problem in Wireless Sensor Networks  

作　　者：LIU Yanbing GUO Wenxu 

机构地区：[1]Chongqing University of Posts and Telecommunications, Chongqing 400065, China [2]Chongqing University, Chongqing 400060, China

出　　处：《Chinese Journal of Electronics》2009年第3期535-538,共4页电子学报（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China （No. 60702055）, Natural Science Foundation of CQUPT （No. A2004-64）.

摘　　要：Wireless sensor networks suffer from unbalanced energy depletion since sensor nodes sitting around the sink need to carry more traffic loads and thus would deplete energy faster, leading to what is known as ＂energy hole＂ problem. This phenomenon is due to intrin- sic many-to-one traffic pattern of wireless sensor networks. In this paper, we deploy an analytical model to characterize the ＂energy hole＂ problem and describe an iterative process to determine the optimum value of the model parameters. Then, we propose a balanced energy depletion strategy based on the derived optimal parameters to mitigate the ＂energy hole＂ problem. Finally, extensive simulations have been performed to validate the analysis and the effectiveness of the energy strategy.

关 键 词：Wireless sensor network Energy hole problem Network lifetime Network topology. 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] F426.2[自动化与计算机技术—控制科学与工程]