Inverse Multiplexing Signal Quality Evaluation via Byte Error Position
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Solution Overview
Problem
In inverse multiplexing of digital signals via an Optical Transport Network (OTN), determining the transmission quality of individual parallel transmission lines is costly and complex, especially when recognizing and correcting transmission errors across multiple lines.
Innovation Solution
A method to evaluate transmission quality by using information on byte group assignments and bit error positions in the reception signal, allowing for the determination of bit error rates and error mechanisms affecting each transmission line, which can be used to adjust transmission properties for optimal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transmission quality evaluation is performed by evaluating each sub-signal separately with switching technology, then transmission quality parameters can be determined, but costs and device complexity increase significantly
Solution Approach 1:
The patent combines the evaluation of all sub-signals into a single integrated process. Instead of using complex switching technology to evaluate each sub-signal separately, the invention merges the evaluation into one unified operation that processes the assembled digital reception signal to determine transmission quality parameters for all transmission lines simultaneously, thereby reducing device complexity while maintaining measurement precision
Solution Approach 2:
The patent creates a universal evaluation method that can determine transmission quality parameters for multiple transmission lines through a single evaluation process. The assembled digital reception signal serves multiple functions: it is used to evaluate transmission quality for all individual transmission lines simultaneously, eliminating the need for separate evaluation systems for each line and reducing overall device complexity
2Measurement precision
If separate evaluation of each sub-signal is performed, then transmission quality parameters can be determined, but costs associated with switching technology increase
Solution Approach 1:
The patent merges separate sub-signal evaluations into a single integrated evaluation process that determines transmission quality parameters for all transmission lines simultaneously. This consolidation eliminates the need for expensive switching technology and separate evaluation systems, thereby improving cost efficiency while maintaining the ability to determine accurate transmission quality parameters
3Reliability
If each sub-signal is designed for error recognition and correction, then transmission errors can be corrected, but device complexity and costs increase
Solution Approach 1:
The patent extracts the error recognition and correction function from individual sub-signal designs and implements it at the system level through a single integrated evaluation process. Instead of embedding complex error correction capabilities in each sub-signal, the invention extracts this function to operate on the assembled digital reception signal, thereby reducing device complexity while maintaining error correction capability
Solution Approach 2:
The patent creates a universal error evaluation mechanism that operates on the assembled digital reception signal to identify and correct errors across all transmission lines. This single multi-functional evaluation system replaces the need for separate error correction designs in each sub-signal, reducing overall device complexity while maintaining comprehensive error correction capability
Data Source
AI summary
The invention relates to a method for the transmission of a digital signal in inverse multiplexing, particularly via an Optical Transport Network (OTN), in which a digital signal to be transmitted, which is split into a certain number M of several sub-signals, where each sub-signal of a transmit side of a transmission line assigned exclusively to this sub-signal is transmitted to a reception side of the assigned transmission line, and in which, on the reception side of the transmission lines, the sub-signals are reassembled to a digital reception signal. According to the invention, on the reception side, bit errors in the digital reception signal including their position in the digital reception signal are detected, and from the detected position of the bit errors and from the assignment of the individual bytes of the digital reception signal to the respective sub-signals and transmission lines, which assignment is also known on the reception side, it is determined to which sub-signal the detected bit errors were assigned. From this one or more parameters are determined, which characterize the transmission quality of the transmission lines assigned to each sub-signal and/or allow inferences to be drawn regarding which error mechanisms of the transmission line in question impact its transmission quality. In addition, the invention relates to a reception device for a system for the transmission of a digital signal in inverse multiplexing, which carries out this method.