基于无线GPRS专网的可变信息标志优化传输方案

摘要

In this paper the important role in the traffic management and control of the highway played by variable message signs,which is based on the wireless GPRS,are described.The principle of the wireless GPRS is presented.It is indicating that the transmission scheme of wireless GPRS is an effec-tive complement and backup program of the VMS transmission plan.The wireless GPRS network is proved to be an effective complement and alternation of the VMS cable transmission.There is a pro-motional value,available for the industry professionals only.%介绍了高速公路中基于无线 GPRS专网传输的可变信息标志 VMS在交通管理和控制中所发挥的重要作用，论述了无线 GPRS专网传输技术的基本原理，探讨了 VMS无线 GPRS专网传输实现方案和数据传输的过程，指出了无线 GPRS专网传输方案是 VMS有线传输方案的一种有效的补充和备用方案。