基于业务的传送网故障测度新方法  

A Novel Traffic-Based Approach for Failure Measuring in Transport Networks

作　　者：刘会永[1] 尹培生[2] 孟洛明[1] 

机构地区：[1]北京邮电大学网络与交换技术国家重点实验室,北京100876 [2]广东省电信有限公司,广东广州510081

出　　处：《电子学报》2007年第1期185-189,共5页Acta Electronica Sinica

基　　金：国家自然科学基金(No.90204002);教育部高等学校博士点专项科研基金(No.20040013002);新世纪优秀人才支持计划资助(No.NCET-05-0113)

摘　　要：提出了一个基于业务的传送网四元组故障测度方法(O,A,P,R)。为测度故障对网络造成的实际损失和潜在影响程度,提出了两个量化评价指标:业务中断指数和业务影响指数。通过连接离散的评价值,得到两个时变的连续评价函数。对该两个函数在故障时间上积分,得到量化的测度结果。四元组分别从实际损失、潜在影响、过程变化、相关信息等四个方面对结果进行描述。以某实际网络的一部分为样例环境,对该方法和其它方法的测度结果进行了对比。结果显示无论在单故障还是多故障场景下,该方法的效果都优于作对比的方法。A novd traffic-based approach of quaternion （ O, A, P, R） for failure measuring in transport network is put forward.In order to measure the extent of traffic lost and potential risk incurred by failures, two metrics,Service Outage Index （SOI） and Service Affected Index （SAI） ,are defined. They are weight ratios of lost services over total services and affected services over total services respectively.And by connecting these discrete assessment values of SOI and SAI, tirne-varied continuous assessment functions come into being. Based on them, a new approach of quatemion （ O, A, P, R） for failure measuring is proposed. In the quaternion, four components represent four corresponding aspects of failures：services lost,potential risks,failure processes,and remarks.The quatemion and other approaches are applied into an example network which is a part of one carrier＇s transport network in China,and the comparison results in whatever single failure or multiple failures scenarios show the quaternion is better than others.

关 键 词：故障测度 传送网 业务中断指数 业务影响指数 四元组 

分 类 号：TN915[电子电信—通信与信息系统]