UCI Channel Feedback Segmentation for High-Precision CSI
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Solution Overview
Problem
Existing communication systems face challenges in obtaining high-precision channel state information (CSI) due to compression, which is necessary for AI-based applications and performance monitoring.
Innovation Solution
The method involves segmenting ground truth channel information into multiple parts and transmitting them via uplink control information (UCI) to enhance precision and feedback overheads, utilizing various configurations and resources to manage the transmission effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If CSI is compressed for feedback, then feedback overhead is reduced, but precision of CSI is lowered
Solution Approach 1:
The patent divides ground truth channel information into multiple segments, where each segment is transmitted separately via UCI. This segmentation allows the system to transmit high-precision CSI without exceeding UCI code length limitations, thereby maintaining measurement precision while managing feedback overhead through structured division of data.
2Measurement precision
If high-precision CSI is transmitted, then CSI accuracy is improved, but feedback overhead increases
Solution Approach 1:
By segmenting ground truth channel information into multiple parts that fit within UCI code length constraints, the patent enables transmission of high-precision CSI through multiple UCI messages. This resolves the contradiction by maintaining accuracy while distributing overhead across multiple transmissions rather than requiring a single large transmission.
Solution Approach 2:
The patent transitions from transmitting compressed CSI (single dimension of compression ratio) to transmitting segmented ground truth channel information (multiple dimensions of segmentation and transmission timing). This dimensional change allows the system to achieve high precision without being constrained by single-message overhead limits.
3Productivity
If UCI code length is limited, then resource efficiency is improved, but ability to transmit high-precision CSI is reduced
Solution Approach 1:
The patent segments ground truth channel information into multiple pieces, each fitting within the UCI code length limit. This segmentation maintains resource efficiency by respecting UCI length constraints while enabling high-precision CSI transmission through multiple organized transmissions, thus resolving the contradiction between code length limits and transmission capability.
Data Source
AI summary
A communication method, includes generating first channel information. The first channel information includes K segments, K is an integer greater than 1, a length of each of the K segments is less than or equal to a first threshold, a type of the first channel information is ground truth channel information, and the first channel information includes a channel response, a channel eigenvector matrix, a precoding matrix, reference signal received power, or a signal to interference plus noise ratio. The communication method also includes transmitting K pieces of UCI to a network device. The K pieces of UCI include the K segments.