Reference Signal Coefficient Reporting for Low-Overhead Wireless Sensing
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Solution Overview
Problem
The direct reporting of raw reference signals by a receiver to a network incurs substantial resource overheads, making it unsuitable for wireless sensing and communication.
Innovation Solution
A method where a first device receives a reference signal occupying at least two resource elements, and transmits information including coefficients corresponding to frequency domain tags (FDTs) indicating frequency domain distances between resource element pairs, reducing the need to transmit raw signals and minimizing resource occupancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If raw reference signals are directly reported by the receiver to the network, then complete signal information is transmitted, but resource overheads become substantial
Solution Approach 1:
The patent extracts only the essential features from the raw reference signal by computing channel frequency response coefficients and selecting significant frequency domain tags (FDTs). Instead of transmitting the complete raw signal, the receiver extracts and reports only the necessary coefficient information that captures the channel characteristics, thereby reducing resource overhead while preserving critical signal information for wireless sensing and communication.
2Quantity of substance
If coefficients corresponding to FDTs are transmitted instead of raw signals, then resource overhead is reduced, but information completeness may be compromised
Solution Approach 1:
The patent transforms the raw reference signal into a different parameter representation by computing channel frequency response coefficients and identifying significant FDTs. This parameter transformation converts the signal from time-domain raw samples to frequency-domain coefficient representations, which are more compact and efficient for transmission while retaining the essential channel state information needed for sensing and communication operations.
Data Source
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AI summary
The present disclosure relates to an information processing method and apparatus, and a communication device, a communication system and a storage medium. The method may be executed by a first device. The method comprises: receiving a first reference signal, wherein the first reference signal occupies at least two resource elements; and sending first information to a network device, wherein the first information comprises at least one first coefficient, each first coefficient corresponds to a frequency-domain label, and the frequency-domain label is used for indicating the frequency-domain distance between a pair of resource elements. Resource overheads for wireless sensing and channel state determination can be effectively reduced.