一种基于LEACH的改进型无线传感器网络路由算法  

Improved Wireless Sensor Network Routing Algorithm Based on LEACH

作　　者：闫仁强[1] 田华[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007

出　　处：《现代电子技术》2009年第3期36-40,共5页Modern Electronics Technique

摘　　要：路由算法是无线传感器网络研究的核心技术之一。在LEACH算法的基础上,提出了一种基于距离和能量考虑选择第二层簇头的两层LEACH算法DE-LEACH,有效避免了低能量且离基站较远的节点与基站直接通信,提高了网络生存时间和数据采集能力。利用事件驱动的方法,减少了发送数据量,进一步延长了网络生存期。Routing algorithm is one of the key technologies of wireless sensor network. Based on the LEACH algorithm. A two- layer algorithm called DE- LEACH is proposed, it takes the cluster- bead＇s residual energy and distance to BS into account, and then chooses a senior cluster- head. The new algorithm avoids direct communication between BS and the cluster- head which has low energy and far away from BS,thus prolongs lifetime of the network,enhances the ability of data collection. Technique of event- driven can cut down the data transmission, further extend the lifetime of network.

关 键 词：路由算法 第二层簇头选择 网络生存时间 数据采集能力 数据融合 事件驱动 

分 类 号：TN915[电子电信—通信与信息系统]