Rogue ONU Detection Using OLT Alarm Message Analysis
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Solution Overview
Problem
Conventional methods for identifying and locating rogue ONU devices in passive optical networks (PON) are time-consuming and labor-intensive, often requiring offline searches that disrupt network services and incur significant costs.
Innovation Solution
A system and method utilizing intelligent rogue device monitoring equipment that collects and analyzes alarm messages from OLT devices and ONUs, employing alarm rules and thresholds to identify and locate rogue ONU devices, reducing downtime and labor costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional offline search methods are used to locate rogue ONU devices, then the rogue devices can be identified, but the network services of normal users are disrupted and significant time and labor costs are incurred
Solution Approach 1:
The system performs preliminary actions by continuously collecting and storing alarm messages from OLT devices in a database before rogue ONU devices need to be located. This pre-positioning of data enables rapid analysis and identification when rogue devices occur, eliminating the need for time-consuming offline searches and allowing quick localization without disrupting normal network services
Solution Approach 2:
The patent introduces intelligent rogue device monitoring equipment as an intermediary between OLT devices and operators. This intermediary automatically collects alarm messages, stores them in a database, analyzes them using alarm rules, and identifies rogue ONU devices, replacing the conventional manual offline search method and enabling fast, non-disruptive rogue device localization
2Measurement precision
If conventional offline search methods are used to locate rogue ONU devices, then the rogue devices can be identified, but significant labor costs are incurred
Solution Approach 1:
The system implements self-service by enabling the monitoring equipment to automatically collect alarm messages from OLT devices, store them in the database, analyze them using pre-configured alarm rules, and identify rogue ONU devices without human intervention. This automated self-service capability eliminates the need for operators to perform manual offline searches, significantly reducing labor costs while maintaining high identification accuracy
Solution Approach 2:
The patent establishes a feedback mechanism where alarm messages from OLT devices are continuously collected and fed into the database, then analyzed using alarm rules to generate identification results. This closed-loop feedback system automatically detects and locates rogue ONU devices, replacing manual search processes and reducing dependency on operator labor
3Speed
If alarm messages are stored in the OLT device, then real-time monitoring is possible, but the storage capacity is insufficient due to large volumes of alarm messages
Solution Approach 1:
The patent segments the storage function by separating the alarm message database from the OLT device and placing it in dedicated monitoring equipment. This segmentation allows the OLT to focus on rapid alarm message generation and transmission while the external database handles large-volume storage, enabling real-time monitoring without constraining the OLT's storage capacity
Data Source
AI summary
A system and a method for intelligently detecting and locating a rogue ONU device. The system includes multiple ONU devices, an OLT device, a database and an intelligent rogue device monitoring equipment. The OLT device distributes optical signals to the ONU devices through an optical splitter. The intelligent rogue device monitoring equipment is electrically connected to the OLT device and the database respectively. The intelligent rogue device monitoring equipment periodically collects alarm messages from the OLT device, stores the alarm messages in the database, determines whether the OLT device is abnormal according to the alarm messages, and identifies the rogue ONU device among the ONU devices according to the alarm messages and alarm rules.