Wireless Terminal Measurement Reporting in Interference-Varying Subframes

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Solution Overview

Problem

Current wireless communication systems, such as LTE, face challenges in efficiently reporting measurement information across cells with varying interference levels, which affects user equipment performance and network optimization.

Innovation Solution

A method where user equipment performs measurements in specific subframes with unique interference levels, configures report information including measurement results, and transmits this information to another cell, allowing for efficient reporting and network optimization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If measurement is performed in all subframes, then measurement precision is improved, but device complexity and processing overhead increase

Engineering Contradiction:
Improvemeasurement precisionVSAvoiddevice complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent divides the measurement process by segmenting subframes into different types (e.g., subframes with different interference levels). The terminal device performs measurements selectively in specific subframes rather than all subframes, thereby reducing complexity while maintaining measurement precision through targeted measurements in representative subframes.

Inventive Principle:
Principle #1Segmentation

2Reliability

If measurement reporting is performed frequently, then network optimization is improved, but loss of time and energy consumption increase

Engineering Contradiction:
Improvenetwork optimizationVSAvoidloss of time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent implements periodic measurement reporting where the terminal device reports measurements at specific intervals or triggered by certain conditions rather than continuously. This periodic action ensures network optimization is maintained while reducing time loss and energy consumption associated with frequent reporting.

Inventive Principle:
Principle #19Periodic action

3Adaptability or versatility

If measurement is performed in subframes with varying interference levels, then adaptability is improved, but measurement precision deteriorates due to interference

Engineering Contradiction:
ImproveadaptabilityVSAvoidmeasurement precision
Core Design Contradiction:
Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent applies local quality by identifying and selecting specific subframes with favorable interference characteristics for measurement purposes. Instead of uniformly treating all subframes, the system adapts by choosing subframes with lower interference or more representative channel conditions, thereby maintaining measurement precision while improving adaptability to varying interference environments.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS9357418B2Measurement reporting method of terminal in wireless communication system and apparatus therefor
Publication Date: 2016.05.31 LG ELECTRONICS INC
  • US9357418B2 patent drawing
  • US9357418B2 patent drawing
  • US9357418B2 patent drawing

AI summary

The present invention relates to a method for processing a signal of a terminal in a wireless communication system. Specifically, the method comprises the steps of: performing a measurement on a first cell in one or more specific subframes; configuring report information which includes the measurement result, together with an indicator indicating that the measurement has been performed in the one or more specific subframes; and transmitting the report information to a second cell, wherein the one or more specific subframes are configured to have different interference levels from other subframes.