Radio Wave Intensity Extraction for Position Estimation

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Solution Overview

Problem

The variability in radio wave intensity due to noise affects the accuracy of position estimation based on radio wave intensity, leading to potential errors in determining distances between terminals in existing technologies.

Innovation Solution

An information processing device that acquires and extracts radio wave measurement results within a specific range (top 10% to top 30%) to reduce noise-induced variations, allowing for more accurate processing of radio wave intensities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If radio wave intensity measurement is used for position estimation, then position information can be obtained, but measurement precision deteriorates due to noise-induced variations

Engineering Contradiction:

Improveposition estimation accuracyVSAvoidmeasurement stability

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The system performs preliminary measurements by acquiring multiple radio wave intensity values before final position estimation. This preliminary action allows the system to collect sufficient data points to identify and filter out noise-induced variations, ensuring more reliable position estimation results.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses feedback by comparing multiple measured intensity values and selecting those that fall within a predetermined range (top 10% to top 30%). This feedback mechanism ensures that only consistent measurements are used for final position calculation, improving both precision and reliability.

Inventive Principle:

Principle #23Feedback

2Measurement precision

If multiple measurement results are acquired to reduce noise impact, then measurement precision improves, but loss of time increases due to additional measurements

Engineering Contradiction:

Improveradio wave intensity accuracyVSAvoidmeasurement acquisition time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system applies partial action by acquiring a specific number of measurements (enough to establish statistical significance) and then selecting only the top 10% to top 30% of results. This approach balances the need for precision with time constraints by not processing all measurements equally but focusing on the most reliable subset.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The system changes the parameter of measurement selection by introducing a percentile-based filtering criterion (top 10% to top 30%). This parameter change allows the system to adaptively select measurements based on their intensity values, achieving precision improvement without requiring excessive measurements.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10690759B2Information processing device, information processing method, and information processing system

Publication Date: 2020.06.23 FELICA NETWORKS INC

AI summary

Provided is an information processing device including an acquisition unit that acquires a measurement result of a radio wave, an extraction unit that extracts a measurement result indicating an intensity included in a range from top 10% to top 30% from a plurality of measurement results acquired by the acquisition unit, and a processing unit that performs a predetermined process by using the measurement result extracted by the extraction unit.