Rogue ONU Detection via OLT Message Exchange
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Solution Overview
Problem
Current methods for detecting and isolating rogue optical network units (ONUs) in passive optical networks are inefficient, particularly for new types of rogue ONUs, leading to long service interruptions and low detection efficiency, especially in high split ratio networks where manual fiber insertion and removal are required.
Innovation Solution
An optical line terminal (OLT) sends a detection message to an ONU with an occupied identifier that has gone offline, prompting the ONU to report its identification code, allowing the OLT to determine and isolate rogue ONUs automatically, thereby improving detection efficiency and reducing service impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual fiber insertion and removal is used to detect rogue ONUs, then detection can be performed, but detection efficiency is low and service interruption time is long
Solution Approach 1:
The patent replaces the manual mechanical operation of fiber insertion and removal with an automated optical detection system. The OLT automatically sends detection messages and analyzes responses to identify rogue ONUs, eliminating the need for physical fiber manipulation and significantly improving detection efficiency while reducing service interruption time.
Solution Approach 2:
The detection system enables the OLT to automatically detect and identify rogue ONUs without requiring manual intervention. The system self-services by sending detection messages, analyzing responses, and generating identification information autonomously, thereby improving productivity and reducing time loss.
2Measurement precision
If multiple detections and repeated confirmation are used to ensure detection accuracy, then detection precision is improved, but detection time increases
Solution Approach 1:
The patent uses preliminary action by sending a detection message to the ONU before final confirmation is needed. The ONU responds with identification information that allows the OLT to identify the rogue ONU in a single detection cycle, eliminating the need for multiple repeated confirmations while maintaining high detection accuracy.
3Productivity
If automatic detection methods are used for new types of rogue ONUs, then detection efficiency is improved, but compatibility with existing detection mechanisms may be compromised
Solution Approach 1:
The patent implements a universal detection mechanism where the OLT sends detection messages that can identify both traditional and new types of rogue ONUs. The detection system is designed to be multi-functional, handling various ONU types through a unified approach that maintains compatibility with existing detection mechanisms while improving efficiency for newly identified rogue ONU types.
Data Source
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AI summary
Embodiments of the present invention disclose a method for detecting a rogue optical network unit ONU, including: determining, by an optical line terminal OLT, that an ONU goes offline, and sending, by the OLT to the ONU corresponding to an ONU identifier, a detection message that carries the ONU identifier, where the ONU identifier is an ONU identifier that is occupied before the ONU goes offline and that is not reassigned, and the detection message is used to instruct the ONU corresponding to the ONU identifier to report an identification code; receiving, by the OLT, a response message, where the response message carries the identification code of the ONU that sends the response message; and determining, by the OLT, that the ONU corresponding to the identification code carried in the response message is a rogue ONU. By means of the foregoing technical solutions, automatic detection and isolation of a new type of rogue ONU are implemented, detection efficiency of the rogue ONU is improved, and impact on a normal service is reduced.