Research on Link Failure Location in High-speed Railway Optical Transport Network

被引：0
|
作者：
Liu T. [1 ]
Wang Z. [1 ]
Sun Q. [1 ]
机构：
[1] School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing
来源：
Sun, Qiang (qsun@bjtu.edu.cn) | 2018年 / Science Press卷 / 40期
关键词：
Failure location; M-trail; OTN; RWS+MTA;
D O I：
10.3969/j.issn.1001-8360.2018.08.011
中图分类号：
学科分类号：
摘要：
Railway optical transport network (OTN) is the basis of the safe operation of trains. Because of the ability of the OTN to transmit large bandwidth, the failure of the network will interrupt the transmission of service, which will seriously affect safe operation of the trains. Therefore, in the event of a failure, the location of the failure should be located quickly and accurately, and corresponding recovery measures should be taken. The failure of optical transport network is mainly divided into link failure and device failure. Currently, optical link failure location is based on m-trail. The way to allocate m-trail to uniquely determine whether the link is faulty and reduce the monitoring cost is the key point of research. In this paper, an RWS+MTA-based m-trail allocation algorithm was proposed for single link fault location in optical transport network. Due to the selection of the next link in the process of the design of the m-trail in the process of the MTA algorithm, the maximum weight link will be selected, which may result in a local optimal situation. The RWS+MTA algorithm can expand the search space through using a probability model when selecting the next link, and can select the best allocation scheme through limited iterations, to avoid the emergence of local optimal situation. The RWS+MTA algorithm was used to design the m-trail allocation scheme of the second ring of the railway backbone layer. The simulation results show that this algorithm can achieve fast and precise location, and effectively reduce the running time and the monitoring cost. © 2018, Department of Journal of the China Railway Society. All right reserved.
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页码：83 / 90
页数：7
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