一种无源光网络系统中的特定告警处理方法  

A specific alarm processing method in PON system

作　　者：胡庭彰 李明春 HU Tingzhang;LI Mingchun(Wuhan Research Institute of Posts and Telecommunications,Wuhan 430070,China;Fiberhome Telecommunication Technologies Co.,Ltd.,Wuhan 430070,China)

机构地区：[1]武汉邮电科学研究院,湖北武汉430070 [2]烽火通信科技有限公司,湖北武汉430070

出　　处：《电子设计工程》2021年第22期38-41,46,共5页Electronic Design Engineering

摘　　要：针对光路不稳定导致的无源光网络(Passive Optical Network,PON)系统中光网络单元(Optical Network Unit,ONU)端短时间大量上报光路告警的问题,文中提出了一种在PON系统中实现ONU端特定告警处理的方法,通过UNM2000(网络融合管理系统)设置告警参数(PON口号、ONU号、告警类型、告警上报最大次数、告警间隔时间),当ONU产生告警时,根据告警上报规则来判断是否上报告警。光线路终端(Optical Line Terminal,OLT)调出该ONU告警参数或PON口告警参数(若没有配置ONU告警参数则调用PON口告警参数),判断当前告警次数是否小于告警上报最大次数以及当前告警时间是否大于下一次告警时间(上一次告警时间加上告警时间间隔);若满足上述规则,则将告警上报UNM2000,更新该ONU当前告警次数及下一次告警时间;若不满足上述条件,则屏蔽告警,不上报UNM2000。相比将大量ONU端告警直接上报,所提方法可以使告警平均上报时间增加23 s,使告警上报率降低30.8%,有效减少了因为光路不稳定而反复上报的ONU端告警,提高了PON系统的稳定性。Aiming at the problem which a large number of optical path alarms are reported in the ONU of PON system beacuse of unstable optical paths.In this paper,a method of ONU specific alarm processing in PON system is proposed.The alarm parameters(PON port number,ONU number,alarm type,maximum number of alarm reports and alarm interval time)are set by UNM2000.When an ONU generates an alarm,it can judge whether to report the alarm according to the alarm reporting rules.OLT first calls out the ONU alarm parameters or PON port alarm parameters(if the ONU alarm parameters are not configured,the PON port alarm parameters are called),and then judge whether the current alarm times are less than the maximum number of alarm reports and whether the current alarm time is greater than the next alarm time(the last alarm time plus the alarm time interval);if the above rules are met,the alarm will be activated report UNM2000,update the current alarm times and the next alarm time of the ONU;if the above conditions are not met,the alarm will be masked and UNM2000 will not be reported.Compared with reporting a large number of ONU alarms directly,beacuse of this method of the average alarm reporting time can be increased by 23 s,the alarm reporting rate can be reduced by 30.8%,a large number of ONU end alarms which are reported repeatedly for optical instability can be reduced effectively,and the stability of PON systen can be improved.

关 键 词：无源光网络 光线路终端 光网络单元 告警处理方法 

分 类 号：TN915.6[电子电信—通信与信息系统]