无线传感器网络传输错误统计的测距算法

A Method of Measuring Distance by Computing Statistical Transmission Errors for WSN

无线传感器网络的拓扑结构是动态变化的,因此网络中节点的定位至关重要。提出了一种以传输错误统计方式实现节点间距离计算的方法。通过计算不同功率下节点间传输数据包的PLR(包损率)值,得到统计PLR值,对节点间距离进行计算。在Matlab环境下对此算法仿真,仿真结果表明,此算法呈近似线性函数特性,算法机制简单明了。

The topology framework of wireless sensor networks is dynamic, so the node localization is very important in wireless sensor networks. This paper proposes a method for estimating the distance between nodes by computing statistical transmission errors. The way is to measure PLR （packet loss rates） under different power levels firstly, then to calculate the statistical PLR for distance estimation. The method is emulated under Matlab circumstance. The results show that the method has the characteristic of approximately linear function. The mechanism of the method is simple and clear.