基于自适应信道切换的抗干扰技术研究  

Adaptive Channel Hopping for Interference Mitigation in Wireless Sensor Networks

作　　者：吴迪 施伟斌[1] 王宇波 WU Di;SHI Wei-bin;WANG Yu-bo(College of Optoelectronic Information and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《软件导刊》2020年第8期207-211,共5页Software Guide

基　　金：上海理工大学科技发展项目(2017KJFZ053)。

摘　　要：无线传感器网络(WSN)作为家庭智能化应用的重要技术,由于与其它无线技术共用相同频段,导致其结果产生交叉干扰,通信可靠性降低。通过对处于WiFi环境中WSN设备的通信可靠性进行研究,对自适应信道切换(ARCH)协议进行改进,与汇聚路由树协议(CTP)协调使用,重新设计了无控制信道的自适应信道切换(non-Ctrl CAH)协议。该协议基于实时检测的链路质量,以自适应方式切换到其它信道进行通信,以缓解WiFi干扰。实验结果表明,在干扰环境中,与固定信道协议相比,non-Ctrl CAH协议的包接收率达到95%以上,而且在干扰情况下non-Ctrl CAH协议的功耗仅为控制信道自适应信道切换(Ctrl CAH)协议和固定信道协议的1/2。non-Ctrl CAH协议能以最低功耗获得较高的包接收率,并且能够有效缓解家庭环境中的WiFi干扰。As an important technology of home intelligent application,WSN shares the same frequency band with other wireless tech⁃nologies,resulting in cross interference and reduced communication reliability.By studying the communication reliability of WSN de⁃vices in WiFi environment,the adaptive channel frequency hopping protocol is improved,and it is easy to coordinate with the aggrega⁃tion routing tree protocol.The protocol is based on the link quality detected in real time and switches to other channels for communica⁃tion in an adaptive manner to mitigate WiFi interference.The experimental results show that the packet reception rate of the non-Ctrl CAH protocol is over 95%.Compared with the fixed channel protocol,in terms of low power consumption,the power consumption of the non-Ctrl CAH protocol is 1/2 of the control channel adaptive hopping(Ctrl CAH)protocol and the fixed channel protocol.The non-Ctrl CAH protocol achieves a higher packet reception rate with the lowest power consumption and effectively mitigates WiFi inter⁃ference in the home environment.

关 键 词：无线传感器网络 信道切换 WiFi干扰 智能家居 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]