Aiming at the consumption inequality problem of the wireless senor network, the paper proposes an improved and energy-efficient routing protocol named LEACH-PSOC based on LEACH. The paper improves election method of cluster-heads for the LEACH algorithm. It firstly cuts the wireless senor network into more than one sub-domains by PSO,which is provided with nice convergence and global optimization ability,and then,selects cluster-heads within the factor of node residual energy. The result of experiment shows that, comparing with LEACH, LEACH-PSOC can balance the network load efficiently, improve the energy utilization, prolong the network lifetime.%针对无线传感器网络中网络能量损耗不均的问题,提出了一种基于LEACH的改进节能路由协议LEACH-PSOC.本文针对LEACH算法中的簇首选举方法进行了改进,首先利用粒子群算法良好的收敛性和全局优化能力将整个网络区域合理分割成多个子区域,然后在子区域内通过考虑节点剩余能量的因素进而选举出簇首.实验结果表明:与经典路由协议LEACH相比,该协议能够更加有效的平衡网络负载,提高了能量的利用率,延长了网络的生命周期.
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