一种改进的室内wsn仿真模型

摘要

Considering multipath transmit effect of indoor wireless propagation model and the protocol stack of wireless sensor networks, this paper proposed an improved indoor wireless sensor networks simulation method. The proposed method used shadowing model to simulate the multipath effect of indoor wireless link, and predicted the in-door actual transmission distance according to the parameters of common wireless sensor chip. It also realized an im-proved indoor wireless sensor networks simulation model in NS2 based on the indoors wireless propagation model and wireless sensor networks protocol stack. The simulation results show that this indoor wireless sensor networks simula-tion model has a similar performance with the actual indoor wireless sensor network on packet delivery ratio and resid-ual energy ratio. The proposed indoor wireless sensor networks simulation model can offer dependable references for designing indoor wireless sensor networks.%针对室内无线传播模型具有多径传播效应的特性和无线传感器网络协议栈的特点,提出了一种改进的室内无线传感器网络仿真方法.方法使用阴影模型模拟室内无线传播模型的多径传播效应,结合常用的无线传感器网络节点芯片的性能参数预测出无线信号在室内的实际传输距离,并在NS2中以该无线信道模型为基础,以无线传感器网络协议栈为标准,建立了一个改进的室内无线传感器网络仿真模型.仿真模型的测试结果表明该模型在数据包投递率及网络剩余能量的比率上与实际室内无线传感器网络的性能相似.证明建立的模型能为室内无线传感器网络的实际布网和应用提供可靠的依据.