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新时期铁路通信传送网将实现基于IP的融合承载,统一承载铁路沿线的各种业务。所承载的业务占用带宽将更高,对QoS、安全性、可靠性等的要求将更严格。为此,铁路通信传送网引入PTN(Packet Transport Network)为最佳选择。本文阐述了PTN技术及其在铁路通信中的应用。
In the new era, the railway communication network will realize the integration and bearing based on IP and carry all kinds of businesses along the railway line. The occupied service bandwidth will be higher, and the requirements for QoS, security, reliability, etc. will be more stringent. To this end, the introduction of the railway transport network PTN (Packet Transport Network) as the best choice. This paper describes the PTN technology and its application in railway communications.