Rateless JSCC Packet Scheduling for Stable Semantic Radio Links
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Solution Overview
Problem
Current cellular technologies struggle to efficiently implement joint source and channel coding (JSCC) for semantic/effective communication due to the separation of source encoding and channel encoding functions, which leads to inefficiencies in data transfer and resource utilization, particularly in fluctuating network conditions.
Innovation Solution
A rateless radio link (R2S2) is established with defined quality of service (QoS) for stable communication, using rateless joint source and channel coding (JSCC) that encodes data packets into bit- or symbol-wise strings with variable priority, allowing the network to adapt transmission based on channel conditions without requiring feedback or sharing channel state information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If joint source and channel coding (JSCC) is implemented for semantic communication, then data transfer effectiveness is maximized and volume is minimized, but device complexity and implementation difficulty increase due to the separation of source encoding and channel encoding functions in current cellular technologies
Solution Approach 1:
The patent merges source encoding and channel encoding functions into a unified joint source and channel coding (JSCC) framework. By training encoder and decoder neural networks jointly to minimize end-to-end semantic loss, the system achieves optimized data transfer effectiveness while managing implementation complexity through integrated architecture design.
Solution Approach 2:
The patent creates a universal JSCC framework that can handle multiple communication scenarios and semantic applications through a single integrated system. The neural network-based encoder-decoder pair is designed to be application-agnostic, working effectively for video streaming, robotic control, and other semantic communication tasks without requiring separate specialized systems.
2Adaptability or versatility
If rateless joint source and channel coding is used with variable packet lengths, then resource utilization is optimized for fluctuating network conditions, but ensuring stable quality of service across variable packet lengths becomes more difficult
Solution Approach 1:
The patent implements dynamic packet length adaptation through rateless coding, where the encoder can generate variable-length coded packets based on channel conditions and network requirements. The system dynamically adjusts the amount of coded data transmitted while maintaining stable QoS through the neural network decoder's ability to handle variable input lengths and reconstruct semantic information effectively.
Solution Approach 2:
The patent changes the packet length parameter dynamically while maintaining QoS stability through the rateless coding framework. By allowing the coded packet length to vary according to channel conditions and semantic importance, the system optimizes resource utilization while the trained neural networks ensure reliable reconstruction across different packet lengths.
3Ease of manufacture
If separate source encoding and channel encoding functions are used in current cellular technologies, then implementation is simpler and more modular, but data transfer efficiency and resource utilization deteriorate
Solution Approach 1:
The patent combines separate source encoding and channel encoding functions into a unified JSCC system. The neural network encoder simultaneously performs source compression and channel coding, while the decoder jointly performs channel decoding and source reconstruction, achieving improved data transfer efficiency through optimized end-to-end semantic communication.
Solution Approach 2:
The patent creates multi-functional neural network components that perform both source and channel coding functions within a single framework. The encoder network handles both compression and error protection, while the decoder network performs both error correction and reconstruction, simplifying the overall system architecture while improving efficiency.
Data Source
AI summary
An apparatus may establish (401) a rateless radio link for stable semantic/effective communication, R2S2, between the apparatus and a client device, wherein for the R2S2 link a desired quality of service, QoS, is defined including at least a desired packet length range of from a minimum data packet length Lmin to a maximum packet length Lmax. The apparatus may schedule (402) a supported packet length Ltx and target stable bit error rate for transmission via the R2S2 link, wherein Lmin≤Ltx≤Lmax.


