CSI Feedback for Beam Prediction and Mode Adjustment
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Solution Overview
Problem
Existing communication technologies face challenges in effectively monitoring and adjusting the performance of the second information processing mode for beam management and MIMO systems, particularly in high-frequency wireless communication, due to high path loss and the need for efficient channel state information acquisition.
Innovation Solution
A method and device for acquiring and reporting channel state information, including first-type and second-type information, to monitor and adjust the information processing mode, utilizing AI-based beam prediction techniques to reduce overhead and improve performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the second information processing mode (channel state information prediction) is used to reduce measurement overhead, then the control overhead is reduced, but the ability to monitor and adjust processing mode performance is insufficient
Solution Approach 1:
The patent introduces a feedback mechanism where the terminal device feeds back both first-type CSI (from actual transmission) and second-type CSI (from prediction) in uplink control information. The network device compares these values to evaluate prediction accuracy and adjusts the information processing mode accordingly, enabling dynamic adaptation while maintaining reduced overhead
Solution Approach 2:
The patent segments the CSI feedback into two distinct types: first-type CSI from actual transmission and second-type CSI from prediction. This segmentation allows the network device to separately evaluate prediction performance and make informed decisions about mode adjustment, resolving the contradiction between overhead reduction and monitoring capability
2Measurement precision
If beam scanning with N beams is performed to select preferred beams, then the beam selection accuracy is improved, but the time consumption and measurement overhead increase
Solution Approach 1:
The patent applies preliminary action by having the terminal device perform prediction on channel state information before actual transmission occurs. The network device sends prediction configuration information in advance, allowing the terminal to prepare predicted CSI values that can be quickly fed back, reducing the time required for beam selection while maintaining accuracy
Solution Approach 2:
The patent uses partial action by selecting only L pieces of CSI from M available pieces for feedback, where L < M. This partial selection reduces the feedback overhead and time consumption while still providing sufficient information for accurate beam selection, as not all measured values need to be reported
3Measurement precision
If M pieces of channel state information are measured to ensure accurate channel knowledge, then the channel state information accuracy is improved, but the feedback overhead increases
Solution Approach 1:
The patent uses copying by creating predicted CSI values from actual measured CSI through prediction algorithms. Instead of feeding back all M measured values, the system creates L predicted copies that capture the essential channel information, reducing feedback overhead while maintaining accuracy through the prediction relationship between first-type and second-type CSI
Solution Approach 2:
The patent applies partial action by selecting only L pieces of CSI from M available pieces for feedback, where L < M. This partial selection reduces the feedback overhead while still providing sufficient information for accurate channel knowledge, as the selected pieces are supplemented by predicted values
Data Source
AI summary
An information sending method, an information receiving method, a communication device, and a storage medium are disclosed. The method may include: acquiring M pieces of first-type channel state information, and determining N pieces of second-type channel state information according to the M pieces of first-type channel state information; generating a channel state information report, the channel state information report including at least one of: L1 pieces of first-type channel state information, or L2 pieces of second-type channel state information, where the L1 pieces of first-type channel state information are determined according to the M pieces of first-type channel state information, the L2 pieces of second-type channel state information are determined according to the N pieces of second-type channel state information; and sending the channel state information report.