Terminal FEC Switching Using Receiver Error Feedback
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Solution Overview
Problem
Existing terminal apparatuses face challenges in efficiently maintaining transmission quality due to changes in the transmission path, such as addition of new facilities or aging, which can lead to decreased transmission efficiency and increased power consumption, as they require complex synchronization and additional data input for error correction method switching, especially for high immediacy data like voice and video.
Innovation Solution
A terminal apparatus with coding and decoding means capable of selecting from multiple error correction methods, allowing for dynamic adjustment of error correction coding based on real-time feedback from the receiving side, ensuring optimal transmission state by adjusting error correction levels based on the number of errors encountered during data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an FEC method having a high error correction ability is fixedly used to maintain transmission quality, then transmission quality is improved, but transmission efficiency decreases and processing delay and power consumption increase
Solution Approach 1:
The patent implements dynamic switching between multiple FEC methods (first FEC method with higher error correction ability and second FEC method with lower error correction ability) based on real-time transmission quality monitoring. The terminal device monitors transmission quality and selectively switches between FEC methods to adapt to changing line conditions, avoiding the fixed use of high-error-correction FEC methods and thereby improving transmission efficiency while maintaining reliability.
Solution Approach 2:
The patent changes the error correction parameter by selecting different FEC methods with varying error correction capabilities. The terminal device monitors transmission quality parameters and adjusts the FEC method selection accordingly, using stronger error correction only when transmission quality degrades, thus optimizing the balance between reliability and transmission efficiency.
2Reliability
If an FEC method having a high error correction ability is fixedly used to maintain transmission quality, then transmission quality is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic switching between multiple FEC methods based on real-time transmission quality monitoring. The terminal device monitors transmission quality and selectively switches between FEC methods to adapt to changing line conditions, avoiding the continuous use of high-power-consuming high-error-correction FEC methods and thereby reducing power consumption while maintaining reliability.
Solution Approach 2:
The patent changes the error correction parameter by selecting different FEC methods with varying power consumption characteristics. The terminal device monitors transmission quality parameters and adjusts the FEC method selection accordingly, using stronger error correction only when necessary, thus optimizing the balance between reliability and power consumption.
3Reliability
If an FEC method having a high error correction ability is fixedly used to maintain transmission quality, then transmission quality is improved, but processing delay increases
Solution Approach 1:
The patent implements dynamic switching between multiple FEC methods based on real-time transmission quality monitoring. The terminal device monitors transmission quality and selectively switches between FEC methods to adapt to changing line conditions, avoiding the continuous use of high-processing-delay high-error-correction FEC methods and thereby reducing processing delay while maintaining reliability.
Solution Approach 2:
The patent changes the error correction parameter by selecting different FEC methods with varying processing delay characteristics. The terminal device monitors transmission quality parameters and adjusts the FEC method selection accordingly, using stronger error correction only when necessary, thus optimizing the balance between reliability and processing delay.
4Reliability
If complex synchronization and additional data input are required for error correction method switching, then transmission quality can be maintained, but device complexity increases
Solution Approach 1:
The patent enables the terminal device to autonomously monitor transmission quality and automatically switch between FEC methods without requiring complex external synchronization or additional control data. The device self-manages the FEC method selection based on its own monitoring of transmission quality, thereby reducing device complexity while maintaining transmission quality.
Solution Approach 2:
The patent implements a feedback mechanism where the terminal device monitors transmission quality and uses this feedback to automatically adjust FEC method selection. This self-contained feedback loop eliminates the need for complex external synchronization and additional control data, reducing device complexity while maintaining reliability.
Data Source
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AI summary
The purpose of the present invention is to provide a terminal device and the like that allow a transmitting side and a receiving side to individually change an error correction coding method. A terminal device (1) is provided with a coding unit (7), a decoding unit (2), and a control unit (5) for controlling the coding unit and the decoding unit individually. Under control of the control unit, the coding unit codes a payload, a first number of error corrections (3), and identification information (6) that are to be transmitted, on the basis of a method indicated by the already-transmitted identification information to thereby generate first coded data. The decoding unit decodes newly-received second coded data on the basis of a method indicated by the identification information included in a decoding result of the already-received second coded data. The number of error corrections counted at the time of decoding is defined as the first number of error corrections to be newly transmitted, a second number of error corrections (4) showing the number of error corrections counted when a decoding unit of an opposite device similar to the device itself decodes the already-received first coded data is extracted from the decoding result, and information indicating the type of a method selected according thereto is defined as the identification information to be newly transmitted.