高效节能的无线传感器网络数据收集协议  

Energy-efficient data gathering protocol for wireless sensor networks

作　　者：史久根[1] 胡小博[1] 

机构地区：[1]合肥工业大学计算机与信息学院,合肥230009

出　　处：《电子测量与仪器学报》2012年第5期437-445,共9页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(编号:60873195)资助项目;安徽省国际科技合作计划项目(编号:10080703001)资助项目

摘　　要：无线传感器网络中的节点具有有限的能量,为了延长网络寿命,提出了一种分布式的高效节能的无线传感器网络数据收集协议DEEC-MR。协议中节点根据自身剩余能量竞争簇头,每个簇头节点根据相邻簇头节点与基站的距离、剩余能量等信息寻找父簇头节点,构造一颗以基站为根的近优最小汇集树。簇头将采集到的数据聚合后沿汇集树以多跳的方式传输至基站。仿真实验证明该协议能有效降低网络能耗,与其他两种数据收集协议(LEACH,PEGASIS)相比,DEEC-MR将网络寿命分别提高1600%和200%,同时使能耗均匀分布在每个节点上,避免部分节点过早死亡,具备很高的可靠性。Since wireless sensor networks consist of nodes with limited energy, in order to prolong network life-times, a distributed energy-efficient data gathering protocol（DEEC-MR） is proposed, in which a node according to its residual energy, independently makes its decision to compete for becoming a cluster head. Each cluster head finds a parent node according to the distance between neighbor cluster head and base station, residual energy of neighbor cluster head and so on. Thus a near optimal minimum spanning tree rooted on base station is constructed. Data gathered by a cluster is transmitted along the spanning tree to base station in a multi-hop manner. The experimental results have shown that com- pared with another two data gathering protocols（LEACH, PEGASIS）, DEEC-MR can prolong sensor network lifetime by 1600% and 200%, respectively. Moreover, DEEC-MR balances the energy consumption to avoid some node dying pre- maturely, so the reliability is higher than that of LEACH and PEGASIS.

关 键 词：无线传感器网络 节能 数据收集 簇头 多级路由 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术] TN911[自动化与计算机技术—计算机科学与技术]