对中国铁路移动通信系统演进的认识

The understanding of the evolution of China railway mobile communication system

随着高速铁路的发展,高速铁路车地之间以乘客为主体的宽带数据业务也逐渐成为高速铁路宽带无线接人的主要业务,而目前我国高速铁路宽带无线网络建设已经明显滞后。本文从系统的需求出发,研究了几种宽带无线接入技术。LTE技术是目前车地间宽带无线通信系统建设方案中比较理想的技术,结合车载宽带接入系统,既能提供安全、可靠的车地间宽带无线通信,又是今后车地宽带无线通信发展的方向,同时还符合目前国际铁路联盟确定的GSM-R向LTE-R的基本演进策略和步骤。

With the development of high-speed railway,the train-wayside broadband date services based on passengers is becoming the main part of high-speed railway broadband wireless access businesses.Now the LTE technology is an ideal technology for the train-wayside broadband wireless communication.It not only can provide the safe and reliable train-wayside broadband wireless communication,but also be the direction of the development of the train-wayside broadband wireless communication.At the same time,it tal ies with the gradual tactics and procedure from the GSM-R to LTE-R deifned by the International Union of Railways.