PTN传输技术在轨道交通的应用研究

Study on the Application of PTN Transmission Technology on Transit

分析轨道交通传输网承载的业务类型,探讨各系统的组网及接口要求,并结合当前轨道交通传输网制式的选择,根据轨道交通传输网需承载大量宽带IP数据业务的要求,引入基于全IP分组交换的PTN(分组传送网)技术,符合技术发展方向;研究轨道交通采用PTN传输技术的网络拓扑、环网保护、QoS保证、时间同步方式等。

Types of Services on transit transmission network are analyzed.The networking and interfacing of each subsystem are studied.According to the current transit transmission network modulation selection and the need for large volume broadband IP data service,PTN technology based on all-IP packet switching is introduced,which is inline with the technology development trend.