大规模无线传感网络的混合LEACH协议研究

能耗问题已经成为大规模无线传感器网络中的研究热点，因此如何设计高能效的路由协议是当前面临的技术挑战。为了降低传感器节点的能耗，提出一种适用大规模网络的基于LEACH算法的混合无线传感网络节能路由算法。首先，根据距离信息，设计一种簇成员向基站直接传输或者通过簇头转发数据的路由协议。然后，推导出满足该算法的能耗条件。最后，通过MATLAB工具仿真表明与已有的LEACH协议和M-LEACH协议相比，混合路由协议能够有效降低基站周围节点的能耗，从而延长整个网路的生存期。

Research on Hybrid LEACH Protocol for Large Scale Wireless Sensor Networks P

In large scale wireless sensor networks,how to reduce energy consumption is the most important techni?cal challenge. Therefore,the design of energy-efficient routing protocol has become a hot research topic. In order to reduce the energy consumption of sensor nodes,based on the LEACH algorithm,this paper proposes a hybrid wire?less sensor network energy saving routing algorithm which is suitable for large scale wireless sensor networks. First?ly,according to distance information,a routing algorithm was designed,in which a cluster member can transmit data to the base station via cluster head or can directly transmit data to the base station. Then the condition that the meth?od must satisfy is derived from the energy consumption. Simulation results obtained by MATLAB show that,com?pared with the existing LEACH protocol and M-LEACH protocol,the hybrid routing protocol can effectively im?prove the life of the nodes around the base station,and thus prolong the lifetime of the whole network.