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在传统的铁路无线列调系统中,较多的车上与地面铁路数据业务传送已大量使用,为铁路运输的安全生产起到一定的作用。传统的无线列调传送数据信息靠网络的单信道资源方式,调制存在数据和话音业务共享信道现象,致使数据传送失败的几率较大,在枢纽地区还存在同频干扰现象。采用GSM-R技术能将现有行车调度、列车运行控制等铁路通信应用融合到单一网络平台中,该技术传送数据和语音使用不同的信道,相互之间影响较少、频率利用率也较高。每个用户无论是在语音还是在数据传送时使用单独信道,相互之间干扰较少。对比采用传统的无线列调和GSM-R技术传送铁路数据业务的区别,尤其是采用GSM-R技术后存在问题的克服就显得较为重要。
In the traditional railway wireless alignment system, more on-board and terrestrial railway data service transmission has been extensively used, which plays a role in the safe production of railway transportation. The traditional wireless data transmission and data transmission rely on the single-channel resource of the network to modulate the shared channel phenomenon of data and voice services, resulting in a greater probability of data transmission failure and co-channel interference in the hub area. The use of GSM-R technology can integrate existing railway dispatching and train control applications into a single network platform that uses different channels for transmitting data and voice with less impact on each other and higher frequency utilization . Each user uses separate channels, either in voice or in data transfer, with less interference between each other. Contrast to the traditional use of wireless transmission line and GSM-R technology to transmit the difference between the railway data services, especially after the adoption of GSM-R technology to overcome the problem is more important.