无线传感器网络基于簇的数据传输可靠性研究  

ON RELIABILITY OF CLUSTER-BASED DATA TRANSMISSION IN WIRELESS SENSOR NETWORKS

作　　者：黄力[1,2] 周新莲[1] 

机构地区：[1]湖南科技大学计算机科学与工程学院,湖南湘潭411201 [2]武汉理工大学信息工程学院,湖北武汉430070

出　　处：《计算机应用与软件》2010年第8期55-58,共4页Computer Applications and Software

基　　金：国家自然科学基金项目(60673061)

摘　　要：在无线传感器网络中,采用多路径传输方法作为保证可靠数据传输的主要手段。但是,如果对所有收集到的数据都采用多路径同时传输则会耗费大量节点能量。因此,需要使用路径选择策略,区分服务方案。提出基于区分服务方案的多路径数据传输算法CBMMA(Cluster Based Multi-hop Multi-Path Routing Algorithm)。一般情况,对数据传输的可靠性要求并不高。为节约资源,在簇间多条不相交路径中,源节点根据概率选取其中的一条路径进行传输数据;一旦紧急事件发生,为收集到紧急事件数据,源节点将同时启动所有到Sink节点的不相交路径进行传输,以提高紧急性数据传输的可靠性,从而满足用户监测突发事件的可靠性要求。仿真实验表明,该算法比LEACH的数据传输有更好的可靠性。Multi-path transmission is used in WSNs as a basic technique to guarantee the reliable data transmission. However, if all the col- lected data are transmitted simultaneously through muhi-path, it will result in wasting mass energy of the nodes. Thus, we need to adopt path selection policy and the differentiated services scheme. We propose in the article the cluster-based multi-hop multi path routing algorithm （CBMMA） based on the differentiated services scheme. In general, there is no high requirement on data transmission reliability. The source node can choose one path among multiple noncrossing paths within the cluster to transmit data according to probability for saving energy ; once the emergency occurs,for the collection of data of emergencies, the source node will start all noncrossing paths leading to the Sink node to transmit, so as to improve the reliability of emergency data transmission, and to satisfy user＇s requirement on reliability of monitoring the incidents. Simulation experiments show that CBMMA can achieve better data transmission reliability than using LEACH.

关 键 词：无线传感器网络 可靠数据传输 多路径路由 区分服务 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]