Multi-Thread CSI Measurement for Flexible Channel Feedback

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Solution Overview

Problem

Existing reference signal measurement and feedback technologies in wireless communication systems are not flexible, leading to performance issues and poor robustness.

Innovation Solution

Configuring multiple CSI measurement threads with dedicated channel and interference measurement resources, allowing for flexible and robust channel information measurement and feedback.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single CSI measurement thread is used, then the system complexity is low, but the feedback flexibility and performance are insufficient

Engineering Contradiction:
Improvefeedback flexibilityVSAvoidsystem complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent divides the CSI measurement process into multiple independent threads (Q≥2), where each thread can independently measure channel state information using different reference signals and resources. This segmentation enables flexible selection of different measurement threads based on channel conditions, thereby improving feedback flexibility without requiring complete redesign of the entire measurement system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces dynamic thread selection mechanisms where the terminal can dynamically choose which CSI measurement thread to use based on current channel conditions, interference levels, and performance requirements. This dynamic adaptation allows the system to optimize feedback performance in real-time while maintaining manageable complexity through selective activation of measurement threads.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If multiple CSI measurement threads are configured, then the feedback flexibility is improved, but the system complexity increases

Engineering Contradiction:
Improvemeasurement flexibilityVSAvoidconfiguration complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent designs multiple CSI measurement threads to share common infrastructure including codebooks, feedback resources, and processing mechanisms. Each thread is configured with different reference signals and measurement parameters but utilizes the same underlying framework, enabling multi-functionality without proportional increases in overall system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent applies different measurement configurations and reference signals to specific threads based on local channel conditions and requirements. Each thread can be optimized for particular scenarios (e.g., different antenna ports, different resource allocations) while maintaining consistency with the overall system framework, thereby managing complexity through localized optimization.

Inventive Principle:
Principle #3Local quality

3Ease of manufacture

If simple codebook-based feedback is used, then the implementation is straightforward, but the transmission performance is limited

Engineering Contradiction:
Improveimplementation simplicityVSAvoidtransmission performance
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent segments the feedback process into multiple measurement threads, each capable of providing independent CSI feedback. This allows the system to select the most accurate feedback from multiple sources, improving transmission performance while maintaining the simplicity of codebook-based quantization and feedback mechanisms within each thread.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements multi-threaded CSI feedback where multiple independent feedback streams are available. The system can selectively combine or choose feedback from different threads to achieve more reliable and accurate channel state information, thereby improving transmission performance without abandoning the straightforward codebook-based feedback approach.

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP3288205B1Channel information configuration method and device, and feedback method and device
Publication Date: 2026.03.11 ZTE CORP
  • EP3288205B1 patent drawingFigure 1~2
  • EP3288205B1 patent drawingFigure 3~4
  • EP3288205B1 patent drawing

AI summary

A method and device for configuring channel information are provided. The method includes: a base station configures Q Channel State Information (CSI) measurement threads for a CSI process, wherein Q is an integer greater than or equal to 2; and the base station configures P1 channel measurement reference signals and P2 interference measurement resources for the Q CSI measurement threads, wherein the P1 channel measurement reference signals are used to perform channel measurement on the Q CSI measurement threads, and the P2 interference measurement resources are used to perform interference measurement on the Q CSI measurement threads, P1 and P2 being integers greater than zero. The problem that in the related art the reference signal measurement and feedback technologies are not flexible is solved.