基于交换式以太网的TCN设计与实时性能分析  

Design and real-time performance analysis on Switched Ethernet based Train Communication Network

作　　者：邢震[1] 贾步超[2] 穆建成 马连川[4] 

机构地区：[1]北京交通大学轨道交通控制与安全国家重点实验室,北京100044 [2]南车青岛四方机车车辆股份有限公司技术中心,青岛266111 [3]铁道部科学技术司,北京100844 [4]北京交通大学电子信息工程学院,北京100044

出　　处：《铁路计算机应用》2013年第6期51-56,共6页Railway Computer Application

基　　金："十一五"国家科技支撑计划(2009BAG12A01-F15);国家高技术发展计划(2012AA112001和2012AA112801);中央高校基本科研业务费(2013JBM125);教育部博士点新教师基金(20110092120011和20120009120004);铁道科技研究开发计划(2013X013-D)

摘　　要：针对传统列车通信网络(TCN)难以满足下一代列车通信网络大容量、实时性的数据传输需求,本文提出基于交换式以太网的列车通信网络(EB-TCN)解决方案,建立了EB-TCN拓扑结构和通信协议栈模型。为了保证EB-TCN的实时性,在通信协议栈中加入实时虚拟层,通过集中式主从调度机制调度底层以太网资源。最后对骨干层和车辆控制层的实时性进行理论分析。新方案较大地提高网络带宽同时,能保证网络的确定性和实时性,能很好地满足传统TCN传输数据的要求,能够成为TCN网络的替代方案。Since traditional train communication network（TCN） was difficult to meet the need of real-time, large-capacity data transmission of the next generation TCN, this paper presented a solution of Ethernet Based- Train Communication Network（EB-TCN）, given EB-TCN network topology and communication protocol stack. In order to ensure real-time requirement of EB-TCN, the paper added real-time virtual layer in the communication protocol stack and schedules underlying Ethernet resource by using centralized master-slave scheduling mechanism. Finally, the paper theoretically analyzed real-time performance of the backbone layer and the vehicle control layer. The conclusion was that this new program could improve the network bandwidth, ensure determinism and real-time, satisfy the traditional requirements of network communication. EB-TCN could be alternative to the TCN.

关 键 词：交换式以太网 EB-TCN 实时虚拟层 可靠性 

分 类 号：U285.5[交通运输工程—交通信息工程及控制]