基于功率监视的光突发交换网络故障发现机制  

Fault detection mechanism for optical burst switching networks based on power monitoring

作　　者：王汝言[1,2] 常交法[1] 隆克平[3] 熊余[1] 林艳芳[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院 [2]电子科技大学通信与信息工程学院,成都610054 [3]电子科技大学通信与信息工程学院

出　　处：《重庆邮电大学学报（自然科学版）》2007年第1期62-65,共4页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：国家"863"计划项目(2005AA122310);国家自然科学基金项目(90304004);国家教育部新世纪优秀人才支持计划项目(教技司[2005]2号);重庆市科委科研项目(2005BB2062;2005AC2089);重庆市教委科研项目(KJ060508;KJ060513)。

摘　　要：光突发交换(OBS)网络的数据信道由于采用统计复用的全光透明传输方式,因此其性能监视和故障发现是一项极具挑战性的研究课题。在分析使用平均功率监测方法检测OBS网络故障时存在缺陷的基础上,提出了基于瞬时光功率监测的光突发交换故障发现机制,该机制采用瞬时光功率监测与告警过滤相结合实时监视信道,有效过滤误告警和冗余告警,为故障定位模块提供更准确的告警信息。理论分析和仿真结果表明在OBS网络中,基于瞬时功率监测的告警过滤机制具有更强的性能监视和故障发现能力。Since the data channel of optical burst switching （OBS） network is multiplexed statistically by transparent all-optical data traffic, its performance monitoring and fault detecting have been proved to be an extremely challenging research topic. Based on the analysis of flaws of average power monitoring method, a modified mechanism named instantaneous optical power monitoring with alarm filter is proposed to monitor the performance and detect fault lothe data channel of OBS networks. Staring at the data channel in a realtime way, it sends exact alarms for fault location module as soon as a fault occurs, while filter lots of false and redundancy alarms when the channels are healthy. Theoretical analysts and simulation results show that the instantaneous optical power monitoring with alarm filter mechanism is better in terms of data channel performance monitoring and fault detecting in OBS networks.

关 键 词：光突发交换 功率监视 故障发现 告警信息 

分 类 号：TN929.11[电子电信—通信与信息系统]