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介绍了接入网技术在铁路通信网中的广泛应用及其发展趋势,同时又对铁路数字调度通信网的概要情况进行分析。在此基础上着重探讨了利用光纤接入技术组建区段数字调度通信网的网络结构等相关问题。得出随着通信的实时性和各种非通话信息的快速发展都要求将全光网络作为组建调度通信网的最终目标,但光接入网技术的使用是必须经历的一个阶段。
The application and trend of access network technology in railway communication network are introduced. At the same time, the outline of railway digital dispatching communication network is also analyzed. On this basis, it mainly discusses the related issues such as the network structure of the digital dispatch communication network using optical fiber access technology. It is concluded that with the real-time communication and the rapid development of various non-talk messages, all-optical network is required to be the ultimate goal of establishing a dispatching communication network. However, the use of optical access network technology is a stage that must go through.