一种基于OLT和ONU相互协作的ONU故障管理机制

An ONU Fault Management Mechanism Based on Cooperation between OLT and ONU

ONU（光网络单元）的异常上行光信号干扰是PON（无源光网络）中常见且难以彻底避免的问题,在PON系统传输距离延伸之后,这个问题更加严重威胁着PON的稳定运行。为解决这个问题,该文设计了一种新的PON系统ONU故障诊断模型,并提出了一种基于OLT和ONU相互协作的ONU故障管理机制。通过从ONU硬件故障和软件故障两个方面的分析可知,该文提出的ONU故障管理机制很好地解决了现有的ONU故障管理的问题,提高了故障管理的准确性和及时性。

Abnormal uplink optical signal interference of ONU （Optical Network Unit）is a common problem in PON （passive optical network）, which is difficult to be avoided completely. After the PON system transmission distance is extended, this prob- lem is more serious threat to the stable operation of PON. In order to solve this problem, a new fault diagnosis model of ONU for PON system is designed, and an ONU fault management mechanism is proposed. Through the analysis of ONU hardware failure and software failure, the ONU fault management mechanism proposed in this paper solves the ONU fault management problem and improves the accuracy and timeliness of fault management.