地铁通信传输系统OTN与MSTP技术的对比

Comparative Analysis of OTN and MSTP Technology in Metro Communication Transmission System

传输系统作为通信系统的基础网络，是城市轨道交通通信系统的重要子系统。传输系统是一个基于光纤的宽带综合业务数字传输网络，为各种业务信息提供传输通道，构成传送语言、文字、数据和图像等各种信息的综合业务传输网。是保证城市轨道交通运行所必需信息的传输媒介。目前光传输系统应用最广泛的技术是OTN技术和基于SDH的MTSP技术。本文阐述了这两种技术的传输原理、传输特点．分析了它们在地铁通信系统中的应用。

As the basic network of a communication system, transmission system is the key subsystem of an urban rail transit communication system. It is a broadband integrated services digital transmission network based on optic fiber, which provides transmission channels for various services information, and forms an integrated services transmission network to send information of language, text, data and image. Transmission system is the transmission media of all necessary information which ensures the operation of urban rail transit. At present, the most widely used technologies of transmission system are OTN technology and SDH-based MTSP technology. This paper describes the transmission principles and the characteristics of the two technologies, and analyzes their applications in metro communi- cation system.