无线传感器网络路由优化中的能量均衡LEACH改进算法

Improved LEACH algorithm based on energy balance in route optimization of wireless sensor networks

详细分析了LEACH算法,并介绍了LEACH算法的优缺点。针对LEACH算法选择簇头没有考虑剩余能量,提出一种改进后的算法LEACH-N。主要节点利用剩余能量和特定范围内相邻节点数的不同,给予不同成为簇头的概率;同时,增加普通节点可以直接发送数据到汇聚节点(Sink),减少能量的消耗。仿真结果表明,与传统LEACH算法相比,LEACH-N算法能均衡节点能量消耗,延长网络的生命周期。

The LEACH algorithm is analyzed in detail,including its advantages and disadvantages.As the LEACH algorithm fails to take into account the residual energy in the selection of cluster head,an improved algorithm LEACH-N is proposed.It can get the main nodes′different probabilities in becoming cluster heads according to the different remaining energy and the number of adjacent nodes in specific scope,.Meanwhile,common nodes are added,which can send data directly to the aggregation node(Sink)to reduce the energy consumption.The simulation results show that,in comparison with the traditional LEACH algorithm,the LEACH-N algorithm can balance the energy consumption of the nodes,and prolong the network life cycle.