Wireless Node CSI Feedback Using Compressed Parameter Sets
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional PMI feedback methods in wireless communication systems with increasing antenna numbers result in significant redundant overhead, necessitating improved methods for determining parameter sets used in channel information generation.
Innovation Solution
A method and apparatus for wireless communications that utilize AI/ML-based CSI compression, allowing flexible adjustment of coding methods to determine parameter sets and groups, reducing implementation complexity and overhead while enhancing transmission reliability and system capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional PMI feedback methods are used with increasing antenna numbers, then channel information accuracy is improved, but system overhead increases significantly
Solution Approach 1:
The patent extracts only the essential parameter groups (first parameter set and second parameter set) from the complete codebook, eliminating redundant PMI feedback information. By selecting and transmitting only these critical parameter groups instead of all possible PMI values, the system reduces overhead while maintaining sufficient channel information accuracy for effective communication.
Solution Approach 2:
The patent changes the parameter representation from traditional full PMI values to compressed parameter group indicators. The first and second parameter sets contain simplified parameter representations that can be transmitted with fewer bits, transforming the feedback mechanism to reduce overhead while preserving the necessary channel state information for accurate communication.
2Quantity of substance
If AI/ML-based CSI compression is implemented, then system overhead is reduced, but implementation complexity increases
Solution Approach 1:
The patent segments the parameter space into distinct first and second parameter sets, each containing specific parameter groups. This segmentation allows the system to manage complexity by handling parameter compression in manageable portions rather than dealing with the entire parameter space at once, reducing the practical implementation burden while achieving overhead reduction.
Solution Approach 2:
The patent introduces parameter group indicators as intermediaries between the full codebook and the compressed feedback. These indicators serve as a mediator that maps complex channel state information to simplified parameter representations, facilitating the compression process and reducing both overhead and implementation complexity by providing a structured approach to parameter selection.
3Adaptability or versatility
If parameter sets are determined through training, then coding flexibility is improved, but system complexity increases
Solution Approach 1:
The patent performs preliminary training to determine the first and second parameter sets before actual communication occurs. By pre-determining these parameter sets through training processes, the system establishes flexible coding frameworks in advance, allowing adaptive coding during communication without adding real-time complexity. The training phase prepares the necessary parameter mappings beforehand.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
Disclosed in the present application are a method and apparatus used in a node for wireless communications. The method comprises: a first receiver receiving a first information block, wherein the first information block is used for indicating a first RS resource set, and the first RS resource set comprises one or more RS resources; and a first transmitter sending first channel information, wherein a first code is used for generating the first channel information, and a measurement for at least one RS resource in the first RS resource set is used for generating an input of the first code; a parameter group which is used by the first code belongs to a first parameter set or a second parameter set; and a first indication is used for indicating, from a target parameter set of the first parameter set and the second parameter set, the parameter group which is used by the first code, and the target parameter set is the first parameter set or the second parameter set. By means of the present application, the system implementation complexity is reduced, and the performance is improved.