一种基于射频指纹的 Wi-Fi6 用户身份认证方法  

A Wi-Fi 6 User Authentication Method Based on RF Fingerprint

作　　者：薛林 XUE Lin(Shanghai WuQi Microelectronics Co.,Ltd.,Shanghai 201203,China)

机构地区：[1]上海物骐微电子有限公司,上海201203

出　　处：《通信技术》2023年第9期1088-1092,共5页Communications Technology

摘　　要：提出了一种适用于Wi-Fi 6协议的射频指纹技术,用于对Wi-Fi网络接入用户进行身份验证。该方法主要由Wi-Fi AP接收机的物理层实现,首先对上行各用户在正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)的资源单元(Resource Units,RUs)进行提取,其次使用信道估计获得各上行用户设备的发射机射频特征,最后计算该射频特征与已有合法接入设备射频特征的相似度,确定用户设备是否合法。该方法可有效弥补原有认证方法的不足,实现更高等级的网络安全。This paper proposes an RF(Radio Frequency)fingerprint technology for Wi-Fi6 protocol in order to authenticate the users accessing Wi-Fi network.The method is mainly implemented by the physical layer of the Wi-Fi AP receiver.First,the RUs(Resource Units)of each user in uplink at OFDMA(Orthogonal Frequency Division Multiple Access)are extracted.Then,the transmitter RF features of each uplink user device are obtained by using channel estimation.Finally,the RF feature is compared to the RF feature of already authorized device to determine whether the user device is authorized.This method can effectively overcome the shortcomings of previous authentication method and achieve a higher level of network security.

关 键 词：WI-FI接入点 正交频分复用多址 射频指纹 网络安全 

分 类 号：TN918.9[电子电信—通信与信息系统]