Failure detection and control method of optical network unit and optical network unit

Abstract

The invention relates to a passive optical network, in particular to a failure detection and control method of an optical network unit and an optical network unit, enhancing the failure detection capability of the optical network unit. The detection method of the optical network unit comprises the steps of: when outputting an optical detection SD signal of an optical module, reading the transmission optical power of the optical module twice, wherein the time interval of reading the optical power twice is set time; when reading the valves of the optical power twice, determining that the optical network unit fails, wherein the valuing range of the set time is larger than one luminous time slot of the optical network unit and smaller than the time interval of continuous normal two-time illumination of the optical network unit. Further, the optical network unit is controlled by cutting off a transmission power supply of the optical module. By adopting the method, the failure detection capability of the optical network unit is enhanced and the optical network unit with failure is prevented from influencing other normal ONU equipment by cutting off the transmission power supply of the optical module.

Description

technical field [0001] The invention relates to a passive optical network, in particular to a fault detection and control method of an optical network unit and an optical network unit. Background technique [0002] With the continuous enrichment of multimedia services, the demand for access network bandwidth is increasing. It is in this case that PON (passive optical network) is more and more widely used. access, which is not possible with traditional ADSL (Asymmetric Digital Subscriber Line). [0003] PON (Passive Optics Network, passive optical network) refers to the OLT (Optics Line Terminate, optical line terminal) as the central equipment and the ONU (Optics Network Unit, optical network unit) optical network unit as the terminal equipment and the ODN (Optics Distribution Network, a passive electronic equipment system composed of optical distribution network). Passive means that the optical distribution network between OLT and ONU does not have any active electronic e...

AI Technical Summary

Problems solved by technology

However, in practical applications, one or several ONUs may fail and are not controlled by the central office equipment, such as long-lasting light, which will inevitably affect the data transmission of other ONUs and affect the normal operation of the ONU. Business

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