车联网环境下一种新的Wi-Fi快速接入机制  

Fast Access Mechanism for Wi-Fi in Internet of Vehicles

作　　者：张永忠[1] 乔志龙[1] 

机构地区：[1]北方工业大学城市道路交通智能控制技术北京市重点实验室,北京100041

出　　处：《单片机与嵌入式系统应用》2015年第11期11-14,共4页Microcontrollers & Embedded Systems

基　　金：科研基地建设-首都世界城市顺畅交通协同创新中心-参与单位(2011协同)(市级)项目;代码PXM2014_014212_000020;学科建设-国家特殊需求-城市道路交通智能控制人才项目(市级);代码PXM2014_014212_000053;研究生培养-研究生教育-产学研联合培养研究生基地(市级)项目;代码PXM2014_014212_000032

摘　　要：以车路协同技术为研究背景,分析了现有短程通信技术和Wi-Fi接入认证方案在高速动态的行车环境中存在的问题,基于OpenWrt嵌入式Wi-Fi平台提出了一种新的无线接入认证方法,取消了传统Wi-Fi通信的认证、关联机制,并对STA和AP信道进行配置,实现了STA与AP的快速接入技术,从而为车载单元与路侧单元在Wi-Fi的覆盖范围内相互通信节省时间。实际测试表明,该方法能较好地适应移动环境下的车辆通信。This paper analyzes short-range communication technology and the exiting problems of Wi-Fi access mechanism in the high speed dynamic driving environment based on the background of vehicle-infrastructure cooperative technology. A new wireless access authentication method based on the OpenWrt embedded platform is proposed,in which the authentication and associated mechanism of traditional Wi-Fi communication is canceled. The fast access technology is realized between STA and AP through the STA and AP channel configuration, so the communication time has been shortened between on-board unit and roadside unit in the Wi-Fi signal area. The prac tical results show that this method can better adapt to the communication between vehicles in a dynamic environment.

关 键 词：车路协同 短程通信 Wi—Fi OpenWrt 快速接入 

分 类 号：U463.6[机械工程—车辆工程] TN92[交通运输工程—载运工具运用工程] TP391.44[交通运输工程—道路与铁道工程]