Coefficient Matrix Signaling With Reduced Parameter Combinations
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Solution Overview
Problem
The large number of parameter combinations in the coefficient matrix configurations for terminal devices in communication systems, such as those defined by the Release 17 standard, leads to significant overheads in network device configurations.
Innovation Solution
A method and apparatus that reduce the number of parameter combinations by introducing a parameter 'a' to transform the ternary parameter combination (β, K1, Mv) into (β, α, Mv), allowing for a more efficient configuration process by reducing the number of bits required for indication, specifically using reduced parameter sets for Mv, β, and α to determine the coefficient matrix.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the network device configures all possible parameter combinations (β, K1, Mv) to the terminal device, then the terminal device can accurately determine the coefficient matrix for various scenarios, but the configuration overhead increases significantly
Solution Approach 1:
The patent segments the coefficient matrix determination process into two parts: first, the network device configures a reduced set of parameter combinations (β, α, Mv) covering major scenarios; second, the terminal device uses a predefined mapping relationship to select appropriate parameters from these combinations. This segmentation reduces configuration overhead while maintaining accuracy for high-rank scenarios through the mapping mechanism.
Solution Approach 2:
The patent introduces a new parameter α (alpha) to replace the traditional K1 parameter, transforming the parameter combination from (β, K1, Mv) to (β, α, Mv). This parameter change reduces the total number of combinations from 56 to 24, achieving more efficient configuration while preserving the ability to determine coefficient matrices accurately through the established mapping relationships.
2Adaptability or versatility
If the network device uses a large number of parameter combinations, then comprehensive communication scenarios are covered, but the number of bits required for indication increases
Solution Approach 1:
The reduced parameter combinations (β, α, Mv) serve multiple functions: they directly configure parameters for common scenarios and simultaneously provide a basis for the terminal device to derive parameters for high-rank scenarios through predefined mappings. This multi-functionality ensures comprehensive scenario coverage while minimizing indication overhead to 5 bits.
3Manufacturing precision
If the terminal device reports more non-zero elements in the coefficient matrix, then the precoding accuracy improves, but the feedback overhead increases
Solution Approach 1:
The patent enables dynamic adjustment of the number of non-zero elements (K2) in the coefficient matrix based on the configured parameter combination. When high-rank scenarios are detected, the system dynamically increases K2 to improve precoding accuracy; when low-rank scenarios occur, K2 is reduced to minimize feedback overhead. This dynamic behavior optimizes the balance between accuracy and overhead.
Data Source
AI summary
In accordance with an embodiment, a method includes transmitting first indication information to a terminal device, where the first indication information indicates a first parameter combination including at least two of the following: a first value of Mv, a first value of β, and a first value of α. The first parameter combination is for determining that a first coefficient matrix to be indicated by the terminal device includes a maximum of K0 non-zero elements, and K0 is determined based on the first values of Mv, β, and α. The terminal device sends a second information indication to the network device, where the second indication information indicates K2 non-zero elements in the first coefficient matrix, and K2 is less than or equal to K0.