DSL Interleaved Data Retransmission for Error Protection
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Solution Overview
Problem
Data transmission systems, particularly those using DSL methods, face challenges with signal corruption due to fluctuating environmental conditions, where existing error protection methods like Reed-Solomon encoding may not adequately address corruption issues in real-time.
Innovation Solution
A method that involves generating interleaved data, converting it into a modulated signal, and storing it in a buffer for potential retransmission based on corruption indicators, using a retransmission controller to initiate retransmission when necessary, thereby combining retransmission with interleaving for enhanced error protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional error protection methods like Reed-Solomon encoding are used during the entire operation time, then error protection level is maintained, but system adaptability to fluctuating environmental conditions deteriorates
Solution Approach 1:
The patent implements dynamic error protection by allowing the error protection level to be adjusted in real-time based on channel conditions. The system transitions from static Reed-Solomon encoding to a dynamic scheme where the protection level adapts to fluctuating environmental conditions, resolving the contradiction between maintaining reliable error protection and adapting to changing environments.
Solution Approach 2:
The system changes the error protection parameters dynamically by adjusting the interleaving depth and retransmission settings based on channel quality indicators. This allows the error protection level to be modified in response to environmental changes, achieving both reliability and adaptability.
2Reliability
If retransmission is implemented for corrupted signals, then data transmission reliability is improved, but transmission latency increases
Solution Approach 1:
The patent applies preliminary interleaving to data before transmission, which redistributes burst errors into isolated errors that are easier to correct. This preliminary action reduces the need for retransmission and minimizes latency while maintaining reliability.
Solution Approach 2:
The system implements selective retransmission based on corruption indicators, retransmitting only the necessary portions of corrupted data rather than entire data blocks. This partial action approach maintains reliability while reducing overall transmission latency.
3Reliability
If interleaving is combined with retransmission for error protection, then error protection effectiveness is improved, but system complexity increases
Solution Approach 1:
The patent merges interleaving and retransmission mechanisms into a unified error protection system. By combining these two techniques, the system achieves enhanced error protection effectiveness while managing complexity through integrated control logic that monitors channel conditions and triggers retransmission only when necessary.
Data Source
AI summary
A method of transmitting data includes generating interleaved data. The method also includes converting the interleaved data into a modulated signal, and transmitting the modulated signal. The interleaved data is also stored, for example, in a buffer. The method further includes determining whether a retransmission of the modulated signal is required, and retransmitting the interleaved data based on a result of that determination.