FEC Error Pattern Analysis for Communication Link Diagnosis
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Solution Overview
Problem
In communication links using copper wiring and backplane systems, bitstream errors often persist due to unrecoverable errors, leading to delayed vital communications, despite the use of forward error correction (FEC) techniques.
Innovation Solution
A communication link analyzer is developed to diagnose errors in bitstreams encoded with FEC, using a processor and memory to classify errors and determine transmission causes by storing error types and positions, allowing for effective identification of issues such as baseline wander, deterministic jitter, signal interference, and power supply problems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If forward error correction (FEC) coding technique is used to compensate for errors in the transmitted bitstream, then error recovery capability is improved, but the ability to identify and resolve underlying transmission problems deteriorates
Solution Approach 1:
The patent segments the error analysis process by classifying errors into different types (random errors vs. systematic errors) and analyzing their distribution patterns across the bitstream. This segmentation enables identification of underlying transmission problems while maintaining FEC error recovery capabilities.
Solution Approach 2:
The patent implements feedback mechanisms by monitoring error patterns and using this information to diagnose transmission link conditions. The system continuously analyzes error types and positions, providing feedback about link quality and enabling proactive problem resolution while maintaining reliable error recovery.
2Reliability
If FEC encoded bitstream is used to detect and correct errors, then data transmission reliability is improved, but communication transmission problem diagnosis capability deteriorates
Solution Approach 1:
The patent performs preliminary error classification and pattern analysis before transmission problems become critical. By pre-establishing error type databases and classification rules, the system prepares diagnostic capabilities in advance, making transmission cause identification easier while maintaining reliable data transmission through FEC.
Solution Approach 2:
The patent introduces an intermediary diagnostic layer that sits between the FEC error correction process and the transmission problem identification. This intermediary classifies errors and translates raw error data into meaningful diagnostic information, easing the identification of transmission causes while preserving FEC reliability.
3Productivity
If error correction is performed without retransmission, then communication speed is improved, but transmission link problem persistence worsens
Solution Approach 1:
The patent uses feedback from error pattern analysis to monitor transmission link stability. By continuously analyzing error types and positions, the system can detect when systematic errors indicate underlying link problems, enabling proactive intervention to prevent unrecoverable errors while maintaining high communication speed through continued FEC operation.
Solution Approach 2:
The patent implements dynamic monitoring of error patterns to adapt to changing transmission conditions. The system can adjust its diagnostic and corrective actions based on real-time error analysis, maintaining link stability by responding to emerging problems while preserving the speed benefits of error correction without retransmission.
Data Source
AI summary
A communication link analyzer is disclosed for analyzing a communication link. The communication link analyzer may analyze bitstreams that have been FEC encoded and are transmitted according to one or more 10 Gigabit Ethernet standards, 40 Gigabit Ethernet standards, and other such standards. The communication link analyzer may maintain a running count of the errors detected for the bit positions of a 2112-bit FEC-encoded datablock. These errors may include, but are not limited to, baseline wander, deterministic jitter, and predictive-interval errors. When a given error threshold is met or exceeded for one or more received bitstreams, the communication link analyzer may then attempt a diagnosis of the communication link. Using previously provided empirical data, the communication link analyzer may provide a diagnosis of the communication link based on the error type threshold that was met or exceeded and the bit position associated with the error type threshold.