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我们处在一个高速发展的时代,随着人口、能源、气候、环境等问题日益突出,航空、公路运输、铁路等交通方式遭遇前所未有的压力。可以预见,高速铁路作为高效、节能、环保的运输方式,将进入黄金发展时期。铁路专用的GSM-R无线通信系统承载着高速铁路的列车控制业务。自2009年开始我国进入3G时代。仅一年的时间便普及开来,本文针对3G在铁路通信应用上的不足,简单阐述一下4G的发展趋势。
We are in an era of rapid development. With population, energy, climate and environment issues becoming more prominent, the traffic pressure on airlines, road transport and railways has come under unprecedented pressure. It is foreseeable that high-speed railway will enter the golden period of development as an efficient, energy-saving and environment-friendly mode of transportation. Railway dedicated GSM-R wireless communication system carrying high-speed railway train control services. Since 2009, China has entered the 3G era. Only a year’s time will be popularized, this article for the lack of 3G in the railway communications applications, a brief account of the development trend of 4G.