摘要
为避免LEACH算法因远端节点与汇聚节点长距离通信能耗过大而提前死亡的弊端,提出一种查询式多路径分簇路由算法——QMR-LEACH算法,该算法按需对监测区域进行查询,由查询所在簇的簇头对查询进行响应,在数据回传过程中引入节点剩余能量、传输消耗能量和跳数等参数,选取最优路径完成数据转发工作。计算机仿真结果表明,所提出算法可以根据节点剩余能量、传输能耗和跳数等参数自适应的选择一条最优路径或以单跳形式转发数据,能够有效地延长节点和整个网络的生命周期,并降低了数据丢失率。
A query-based multi-hop clustering routing algorithm （QMR-LEACH algorithm）, which queries the monitoring area according to the demand and responses the query by the cluster-head, is proposed to avoid the disadvantage that the long- distance communication between remote node and the sink node could lead to premature death of LEACH algorithm because of much energy consumption. During the process of data pass back, the parameters such as node residual energy, transmission energy consumption and hop count are led in the algorithm, and a optimal path is chosen to complete the data forwarding. The computer simulation results show that the QMR-LEACH algorithm can adaptively select an optimal path according to the parameters of residual energy, transfer energy consumption and hop, or transmit the data in single hop form, it can effectively extend the life cycle of nodes and the entire network, and also can reduce the data loss rate.
出处
《现代电子技术》
2013年第15期36-40,共5页
Modern Electronics Technique
关键词
无线传感器网络
路由协议
多路径
查询式
wireless sensor network
routing protocol
multipath
query method
