Terminal Measurement Timing Windows for Multi-Frequency CSI

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Solution Overview

Problem

In radio communication systems, particularly in multi-TRP scenarios, there is a challenge in appropriately configuring and performing CSI measurements and reporting across multiple frequencies, leading to potential decreases in communication throughput.

Innovation Solution

A terminal is equipped with a receiving section to receive measurement timing windows for layer 1 measurements at multiple frequencies, and a control section to manage these measurements accordingly, ensuring appropriate CSI measurement and reporting across different frequencies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multi-TRP is applied with serving cell switching to cells with different PCIs and frequencies, then network capacity and throughput are improved, but measurement and reporting configuration complexity increases

Engineering Contradiction:
Improvecommunication throughputVSAvoidmeasurement configuration complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the measurement configuration by introducing frequency-specific measurement timing windows. Each frequency has its own measurement timing window configuration, allowing the terminal to perform measurements at appropriate times for each frequency without confusion. This segmentation resolves the contradiction by organizing the complex multi-frequency measurement task into manageable, frequency-specific segments.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a time dimension to the measurement configuration by defining measurement timing windows for each frequency. Instead of attempting to measure all frequencies simultaneously or using a single timing window, the solution adds the time dimension to allow sequential measurements at frequency-appropriate times, thereby reducing configuration complexity while maintaining multi-frequency measurement capability.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Measurement precision

If measurement timing window is configured for each frequency, then measurement accuracy is improved, but signaling overhead increases

Engineering Contradiction:
ImproveCSI measurement accuracyVSAvoidsignaling overhead
Core Design Contradiction:
Measurement precisionVSLoss of information

Solution Approach 1:

The patent creates a universal measurement timing window configuration framework that can be applied across multiple frequencies. Rather than designing entirely separate measurement mechanisms for each frequency, the same measurement timing window structure is reused and adapted for each frequency, reducing signaling overhead through configuration reuse while maintaining frequency-specific measurement accuracy.

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

Data Source

PatentEP4572385A1Terminal, wireless communication method, and base station
Publication Date: 2025.06.18 NTT DOCOMO INC
  • EP4572385A1 patent drawingFigure 1A~1D
  • EP4572385A1 patent drawingFigure 2A~2B
  • EP4572385A1 patent drawingFigure 3

AI summary

A terminal according to one aspect of the present disclosure includes a receiving section that receives a measurement timing window for measurement of layer 1 at a plurality of frequencies, the measurement timing window being different for each of the frequencies, and a control section that controls the measurement of layer 1 during the measurement timing window. According to an aspect of the present disclosure, it is possible to perform appropriate measurement or reporting at a plurality of frequencies.