一种针对无线传感器网络LEACH协议的改进算法

随着无线传感器网络技术的不断发展和完善,越来越多的领域需要用到这项技术.但是无线传感器网络中节点携带电量有限,容易造成网络的寿命短的问题.这也制约了无线传感器网络技术的广泛应用. LEACH算法是现在无线传感器网络中广泛使用的协议.它有效的改善了节点能耗问题,但该算法簇头是自适应随机生成、未考虑当前节点剩余能量以及簇头分布均衡性等问题.因此会使网络中能量损耗不均衡,导致网络过早死亡.本文采用理论分析和仿真验证相结合的方法.针对LEACH协议成簇过程引入最佳簇头数,双簇头传输数据等方法来均衡网络中节点的能耗延长网络寿命.实验结果表明,改进后的方法有效地减少了网络能量消耗、保证了网络负载的平衡、延长了网络的寿命.

Improved Algorithm of LEACH Protocol for Wireless Sensor Network

With the continuous development of wireless sensor network technology, more and more fields need to use it. But node carrying capacity is limited in the network, causing the problem of short lifetime. It also restrict the widely used of this technology. LEACH algorithm is now widely used in wireless sensor network protocol. It improved the node energy consumption effectively, but the cluster in the algorithm is adaptive random, lack of considering the current node's energy and cluster distribution balance. So it may make the network energy loss uneven, lead to network premature death. This article combine theoretical analysis and simulation verification. For LEACH agreement clusters process, introduced into optimal cluster, dual cluster head to transmit data and other methods to prolong the network lifetime, balance energy consumption of nodes in the network, The experimental results show that, the improved method effectively reduces the network energy consumption, ensure the network load balance, and prolong the life span of the network.