Wireless Communication Device Interleaving Size Adjustment
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Solution Overview
Problem
In wireless communication systems using multiple radio systems, the application of error correction codes (ECC) to layers above the physical layer introduces processing delays due to interleaving, which can compromise error correction capabilities.
Innovation Solution
A wireless communication device and method that dynamically sets interleaving sizes based on transmission delay differences between radio systems, optimizing interleaving sizes for each system to maintain high error correction capability while reducing processing delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If error correction codes (ECC) are applied to layers above the physical layer in multi-radio systems, then error correction capability is improved, but processing delay increases due to interleaving
Solution Approach 1:
The patent applies dynamics by making the interleaving size adjustable rather than fixed. The controller dynamically sets different interleaving sizes for different radio systems based on their transmission delay characteristics, allowing the system to optimize between error correction capability and processing delay in real-time
Solution Approach 2:
The patent changes the parameter of interleaving size to resolve the contradiction. By varying the interleaving size parameter according to transmission delay differences between radio systems, the system achieves both high error correction capability (with larger interleaving sizes) and reduced processing delay (with smaller interleaving sizes) in different contexts
2Reliability
If large interleaving sizes are used to enhance error correction capability, then reliability is improved, but processing delay increases
Solution Approach 1:
The patent applies local quality by assigning different interleaving sizes to different radio systems based on their individual transmission delay characteristics. Instead of using a uniform interleaving size throughout the system, each radio system receives tailored interleaving parameters suited to its specific performance characteristics
3Adaptability or versatility
If multiple radio systems with different transmission delays are used, then system versatility is improved, but coordinating interleaving processing becomes more complex
Solution Approach 1:
The patent applies preliminary action by having the controller pre-determine and set the interleaving sizes for each radio system before data transmission begins. This advance configuration simplifies the coordination complexity by establishing the interleaving parameters upfront based on known transmission delay characteristics, rather than attempting to coordinate in real-time
Data Source
AI summary
A high error correction capability is kept while reducing a processing delay in application of the ECC in a multi-radio. A wireless communication device for performing data transmission by using a plurality of radio systems RAT1 and RAT2 includes, in a GLL 100 that absorbs a difference in physical layer and MAC layer among RATs, an encoder 301 that encodes transmission data, a multiplexer 302 that distributes encoded data in correspondence with the RAT1 and the RAT2, interleavers 303 and 304 that interleave a plurality of coded data that has been encoded and multiplexed, and a resource controller 305 that sets an interleaving size for each interleaving processing in the interleavers 303 and 304 based on a transmission delay difference between the RAT1 and the RAT2.