摘要： 针对无线传感器网络能量有限的问题，从稳定性的角度出发，提出LEACH协议的低功耗改进方案。借助NS-2仿真对比改进前后协议的运行结果，讨论传感器能耗对协议低功耗改进的影响。仿真结果表明，协议改进后网络生存期和传输数据量分别增加了45.87%和35.16%，变异系数(CV值)得到改善，但当传感器耗能占节点总能量的60%时，协议的改进没有效果。

关键词: LEACH协议, NS-2仿真, 低能耗, 传感器耗能

Abstract: Aiming at the problem of limited energy of Wireless Sensor Networks(WSN), this paper proposes an approach of energy-saving improving for LEACH protocol in aspect of stability. Using a simulation software NS-2 simulation, this paper compares performances of the improved version of LEACH protocol with the original one and discussed the influence of the energy dissipation of sensing module on the protocol improvement. Simulation results show that the modified protocol improves 45.87% longer lifetime and 35.16% more data than the original one as well as the value of CV. But it is found that when the energy dissipation of sensing module is more than 60% of the total energy, the improvement of the protocol is invalid.

Key words: LEACH protocol, NS-2 simulation, low energy consumption, energy dissipation of sensor

中图分类号: 

• TP393