一种基于移动预测的无线传感器网络动态拓扑管理机制

拓扑管理是节省无线传感器网络能量消耗的主要方法之一.通常采用的拓扑管理是静态的.即在整个网络范围内通过定期让冗余节点休眠来节能.但在诸如移动目标定位跟踪的应用场景中.静态拓扑管理会造成较大的能量消耗的浪费.提出一种动态拓扑管理机制,利用移动预测技术在移动目标的附近动态构造拓扑管理区域,并只在该区域内实施拓扑管理,而让区域之外的大部分节点休眠.分析了动态拓扑管理的性能并通过仿真比较了动态拓扑管理与其他相关机制的能量消耗.

A Dynamic Topology Management Scheme Based on Mobility Prediction in Wireless Sensor Networks

Topology management is a common way to save the energy consumption in wireless sensor networks. It is usually static to turn off redundant sensors periodically within whole network region, whereas in many application scenarios such as target tracking, static topology management wastes much energy. A dynamic topology management scheme is presented in this paper. By means of mobility prediction technology, it constructs a topology management region around the target and only implements topology management within this region. Many sensors outside this region are turned off. This paper analyzes the performance of dynamic topology management and compares the energy consumption of dynamic topology management with other related schemes through simulation.