DSRC协议数据链路层的研究与实现
首发时间:2009-10-05
摘要:DSRC专用短程通信协议是智能运输系统(ITS)领域内用于车路间高速无线通信的重要基础通信协议。本文分析了DSRC通信系统及其协议栈结构,并着重论述了数据链路层的的主要功能及其服务类型,以LLC子层的协议进程为重点,画出了相应的有限状态机,给出了一种基于PowerPC处理器和嵌入式Linux的数据链路层的实现,为DSRC协议应用层的开发、ITS相关领域的研究和其他扩展应用提供了重要的实践基础。
关键词: 介质存取控制 逻辑链路控制 专用短程通信 智能交通系统 Linux
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Research and Implementation of Data Link Layer of DSRC Protocol
Abstract:DSRC is a basic communication protocol used for wireless communication between vehicle and road in the ITS. This paper analyzes DSRC protocol stack and DSRC communication system, states main functions and service types of data link layer with LLC sublayer as a key point, presents the FSM of LLC, and gives a implementation of data link layer based on PowerPC processor and embedded Linux operating system, which lays the foundation for the development of application layer of DSRC protocol, research of ITS field and other extended application.
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