Dynamic Interleaver Depth Switching Without Data Interruption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing data transmission systems, particularly in ADSL and VDSL, face interruptions due to significant bit errors that conventional coding methods cannot correct, leading to incomplete data transmission and the need for system reactivation, as the depth of interleaver devices cannot be adjusted dynamically to adapt to changing interference levels without disrupting service.
Innovation Solution
The method allows for dynamic adjustment of the depth of interleaver and de-interleaver devices by increasing or decreasing the delay in data transmission using additional data elements or dummy bytes, which can be inserted or rejected without interrupting the data stream, allowing for real-time optimization of error correction based on interference levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the depth of the interleaver device is fixed to provide error correction capability, then error correction performance is improved, but adaptability to changing interference levels deteriorates
Solution Approach 1:
The interleaver depth is made dynamically adjustable rather than fixed. The system can change the depth parameter in real-time based on detected interference conditions, allowing optimal error correction performance under varying channel conditions while maintaining continuous operation.
Solution Approach 2:
The depth parameter of the interleaver device is changed by modifying the delay values in the delaying devices. By adjusting these delay parameters, the system adapts the error correction capability to match current interference levels without requiring system reactivation.
2Reliability
If the depth of the interleaver device is increased to handle severe interference, then error correction capability is improved, but data transmission rate deteriorates
Solution Approach 1:
The interleaver depth is dynamically adjusted based on actual interference conditions rather than being set to a high fixed value. This allows the system to achieve high error correction capability only when needed, maintaining high data transmission rates during normal conditions.
Solution Approach 2:
The depth parameter is changed by modifying delay values in response to detected interference levels. When interference is severe, delays are increased to provide better error correction; when interference is low, delays are reduced to maximize transmission rate.
3Reliability
If the depth of the interleaver device is changed using conventional methods, then error correction capability is adjusted, but data transmission is interrupted
Solution Approach 1:
The interleaver depth is changed during continuous data transmission without interrupting the data stream. The system modifies delay values and processes data elements on-the-fly, ensuring uninterrupted transmission while adapting error correction capability to current conditions.
Solution Approach 2:
The system detects interference conditions and prepares for depth adjustment in advance, but executes the change during ongoing transmission by processing data elements as they arrive. This preliminary detection followed by continuous adjustment avoids transmission interruptions.
Data Source
AI summary
Methods for changing a depth of interleaver devices and de-interleaver devices are provided, whereby a change in the depth is possible while transmitting or receiving operations are in progress. For this, delays of delaying devices are enlarged or reduced, additional data values being inserted to guarantee smooth flowing data transmission.