Optical Communication Device Frame Discarding Location Identification
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Solution Overview
Problem
In optical communication systems, it is difficult to identify where frames are discarded, making it challenging for users to diagnose issues.
Innovation Solution
An optical communication device with a transmission reception unit, control unit, process execution unit, and monitoring judgment unit that uses test frames to determine if frames are discarded between specific components within predetermined times, allowing for the identification of the discarding location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If frame transmission monitoring is implemented across multiple components, then frame discarding location identification capability is improved, but device complexity increases
Solution Approach 1:
The optical communication device is divided into multiple functional units (transmission reception unit, control unit, process execution unit, monitoring judgment unit), each responsible for specific frame handling tasks. This segmentation allows precise identification of where frames are discarded while distributing complexity across modular components rather than concentrating it in a single complex module.
Solution Approach 2:
Test frames are introduced as intermediary objects to monitor and trace frame transmission paths. These special frames carry identification information that allows the system to detect whether frames are discarded in the control unit or process execution unit, providing measurement capability without requiring complex monitoring infrastructure.
2Measurement precision
If test frames with identification information are transmitted, then frame transmission status monitoring capability is improved, but loss of information increases
Solution Approach 1:
Test frames are created as copies of normal frames but with added identification information. These test frames follow the same transmission path as normal frames, allowing monitoring of frame status without interfering with normal operations. The identification information in test frames enables detection of discarding events while the copying approach minimizes impact on actual data transmission.
Solution Approach 2:
The system changes specific parameters of test frames (such as adding identification fields or modifying header information) to enable monitoring functionality. By altering only necessary parameters while maintaining the overall frame structure, the system achieves monitoring capability with minimal information loss and negligible impact on normal frame processing.
Data Source
AI summary
An OLT includes an NNI-PHY, a transmission reception unit that transmits a frame transmitted by an ONU, a control unit that transmits the frame if the transmission reception unit received the frame and the frame is not damaged, a process execution unit that executes a process of transmitting the frame to the NNI-PHY if the frame is the specific frame, and a monitoring judgment unit that executes at least one of a process of judging that the frame was discarded in the control unit if the frame does not pass between the control unit and the process execution unit within a first time and a process of judging that the frame was discarded in the process execution unit if the frame does not pass between the process execution unit and the NNI-PHY within a second time.