CSI Report Priority Selection for Uplink Resource Constraints
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Solution Overview
Problem
In scenarios where AI-based channel state information (CSI) feedback is implemented, the existing methods for transmitting CSI face challenges due to insufficient uplink transmission resources, leading to the need for dropping parts of the CSI, which is not reasonable given the direct correspondence between CSI elements.
Innovation Solution
The proposed solution involves determining priority values (PVs) for CSI reports, which include both first-type and second-type CSI reports. These PVs are used to select and transmit at least one CSI report with a small priority value, ensuring effective CSI transmission even in cases of resource collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a drop operation is performed to transmit only part of the CSI when uplink transmission resource is insufficient, then the transmission resource constraint is satisfied, but the CSI feedback completeness and accuracy deteriorate
Solution Approach 1:
The patent changes the parameter of CSI representation from direct element-wise quantization to an autoencoder-based compressed representation. The encoder transforms the original CSI into a compressed form that can be transmitted within limited resources, while the decoder reconstructs the CSI at the receiver side, maintaining feedback quality despite resource constraints.
Solution Approach 2:
The patent creates a compressed copy of the CSI through the autoencoder process. Instead of transmitting the full CSI or dropping elements, the system transmits a compressed representation that captures the essential channel state information, which is then reconstructed at the base station to form a complete CSI picture.
2Reliability
If AI-based CSI feedback is implemented to improve wireless communication system performance, then the communication performance is improved, but the complexity of CSI processing and transmission increases
Solution Approach 1:
The patent segments the CSI processing function into two separate components: an encoder at the terminal side that compresses the CSI, and a decoder at the base station that reconstructs it. This segmentation allows the terminal to perform simpler compression operations while the base station handles the reconstruction, distributing the complexity across the system.
Solution Approach 2:
The autoencoder acts as an intermediary mechanism between the terminal and base station for CSI transmission. It provides a standardized compression and reconstruction process that simplifies the interaction between the two parties, allowing them to exchange CSI efficiently without requiring complex processing at either end.
3Measurement precision
If all L CSI reports are transmitted to ensure complete channel state information feedback, then the CSI feedback accuracy is improved, but the uplink transmission resource requirement increases
Solution Approach 1:
The patent changes the transmission parameter from sending all L CSI reports to sending a compressed representation. The autoencoder transforms the CSI into a form that requires fewer transmission resources while preserving the essential information needed for accurate channel state feedback.
Solution Approach 2:
Instead of transmitting all original CSI reports, the system transmits a compressed copy that contains the essential channel state information. The decoder at the base station reconstructs the complete CSI from this compressed copy, achieving accurate feedback with reduced transmission resource consumption.
Data Source
AI summary
Provided are an information transmission method and device, and a storage medium. The information transmission method applied to a first communication node includes: determining priority values of L channel state information (CSI) reports, where the L CSI reports include L1 first-type CSI reports and L2 second-type CSI reports, L, L1 and L2 are all integers, L1 is greater than or equal to 0, L2 is greater than 0, and L=L1+L2; and transmitting information in at least one CSI report among the L CSI reports according to the priority values.