作　　者： ; ;

机构地区： 南开大学信息技术科学学院

出　　处： 《天津大学学报》 2007年第9期1054-1059,共6页

摘　　要： 在无线传感器网络设计中,为节约系统能量、延长网络寿命,提出了基于自适应拓扑变化(SAT)的路由协议.该协议的路由搜索主要集中在生成的连通支配集内,网络中各节点维护简单的路由信息表.当网络中少数节点发生变化时,只需个别相关节点更新它们的状态,不需要网络中所有节点重新计算连通支配集.考虑到网络内传感器节点能量分布均衡,各节点可以轮换充当支配点,支配点的数据融合可以大大减少传输信息的数量.仿真结果表明,与LEACH协议相比,SAT路由协议明显均衡了各节点的能量消耗,有效地延长了网络寿命. In order to reduce power consumption and prolong the network lifetime, a routing algorithm based on self-adaptive topology （ SAT ） for wireless sensor network was proposed. In the algorithm, the searching space for a route was reduced to nodes in the connected dominating set. The nodes in the network maintained a simple routing information table. When only a few mobile nodes were in movement, it＇s no need to recalculate the connected dominating set from scratch, which meant only individual nodes update their status. The SAT routing algorithm utilized rotation of dominating nodes to evenly distribute energy of sensor nodes in the network and incorporated data fusion into routing protocol to reduce the amount of information that must be transmitted. Simulation results show that the SAT muting algorithm can distribute energy dissipation evenly throughout the sensors, extending the system lifetime in contrast with the LEACH algorithm for networks.

关 键 词： 无线传感器网络 最小连通支配集 能量有效 节点更新 路由

领　　域： [自动化与计算机技术] [自动化与计算机技术]