Joint Source-Channel Encoding for Real-Time Wireless Adaptation
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Solution Overview
Problem
Conventional data transmission methods suffer from poor adaptability to varying channel conditions, leading to deteriorated data reception quality and frame freezing or mosaic phenomena due to separate source and channel encoding without real-time adjustments.
Innovation Solution
Implement a joint source-channel encoding scheme that integrates entropy encoding and channel encoding, with parameters adjusted based on channel quality to enhance adaptability and encoding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate source encoding and channel encoding are used, then the system structure is simple and independent modules are maintained, but data reception quality deteriorates rapidly under poor channel conditions
Solution Approach 1:
The patent merges source encoding and channel encoding into a unified joint source-channel encoding system. The encoder integrates both functions, allowing the encoding parameters to be jointly optimized based on channel conditions. This combination enables the system to adaptively adjust encoding strategies to maintain data reception quality under varying channel conditions while avoiding the rapid deterioration seen in separate encoding systems.
2Adaptability or versatility
If channel encoding rate is adjusted based on channel condition, then channel adaptation is improved, but source encoding parameter adjustment in real-time is not achieved
Solution Approach 1:
The patent implements dynamic adaptation by making encoding parameters adjustable in real-time based on channel conditions. The joint source-channel encoder continuously monitors channel quality and dynamically modifies both source encoding parameters (such as quantization step size, prediction mode) and channel encoding parameters (such as coding rate) to optimize performance for current channel conditions, achieving real-time adaptability across the entire encoding process.
3Adaptability or versatility
If joint source-channel encoding is implemented, then adaptability to channel conditions improves and encoding gain increases, but existing protocol stack lacks support interfaces
Solution Approach 1:
The patent segments the joint source-channel encoding functionality into distinct modules within the protocol stack, with defined interfaces between them. The encoder is divided into source encoding sub-modules, channel encoding sub-modules, and control sub-modules that communicate through standardized interfaces. This segmentation allows the complex joint encoding functionality to be integrated into existing protocols through modular additions rather than complete protocol redesign.
Data Source
AI summary
This application discloses a joint source-channel encoding method and an information exchange method that are used during wireless data transmission. In the method, through information exchange between an access network, a core network, and a server, the access network can perform joint source-channel encoding on service data, and the access network can further jointly optimize a source-channel encoding parameter with reference to a channel condition, to adapt to different channel conditions of a terminal in real time, so that transmission efficiency of data during wireless transmission is high.