基于WiFi嗅探的感知系统研究  

Sensing system based on WiFi probing

作　　者：赵飞飞[1,2] 金彦亮[1] 熊勇[2] Zhao Feifei Jin Yanliang Xiong Yong(School of Communications and Information Engineering, Shanghai University, Shanghai 200444, China Key Laboratory of Wireless Sensor Network Communication, Shanghai Institute of Microsystem and Information Technology, Shanghai 200050, China)

机构地区：[1]上海大学通信与信息工程学院,上海200444 [2]中国科学院上海微系统与信息技术研究所无线传感网与通信重点实验室,上海200050

出　　处：《电子测量技术》2016年第10期108-113,共6页Electronic Measurement Technology

摘　　要：为了获取某一区域内开启WiFi功能的移动终端的数量,设计了一种基于WiFi芯片MT7620A和嵌入式操作系统OpenWrt的移动终端感知系统。在深入地研究了移动终端加入WiFi网络流程的基础上,通过选择合适的硬件平台和软件系统,在监听模式下利用抓包工具抓取移动终端发出的嗅探帧,并解析出嗅探帧中的媒体访问控制地址等数据。重点阐述了感知系统的软件实现机制和关键技术,关键技术包括在U盘上外扩交换空间以及系统抓取并保存移动终端数据的算法。实验结果表明系统具有使用方便、能持续稳定抓包等特点,具有一定的商业价值。In order to obtain the number of mobile devices WiFi on in some region,a WiFi device sensing system based on MT7620 Achipset and embedded operation system OpenWrt was designed.The principle how a mobile device was studied,and then suitable hardware and software platform were chosen.After that,the system was set to monitor mode.With the help of sniff pro,probe requests from mobile devices were captured and media access control addresses were parsed.Implementation mechanism and key technology of the sensing system were elaborated,which include the creation of swap partition on a U disk and the algorithm of how related data captured and saved.The experiment result shows that our system can capture Probe Request stably and is ease to use,and it has some commercial value.

关 键 词：移动终端检测 WIFI 嗅探帧 

分 类 号：TN99[电子电信—信号与信息处理]