Wireless Communication Section Selection for Position Estimation

Solution Overview

Problem

Existing position estimation technologies face accuracy issues due to obstacles and environmental factors, particularly in non-line-of-sight conditions, which affect the reliability of signal propagation and subsequent position determination.

Innovation Solution

A communication device with multiple wireless sections that repeatedly transmit and receive signals to calculate reliability parameters, selecting the most appropriate section for position estimation based on signal characteristics, ensuring accurate determination of positional parameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single wireless communication section is used for position estimation, then the device complexity is reduced, but the measurement precision deteriorates due to obstacles and environmental factors

Engineering Contradiction:

Improvenumber of wireless communication sectionsVSAvoidposition estimation accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The communication device is divided into multiple wireless communication sections (first, second, third, and fourth sections), each capable of independently receiving signals. This segmentation allows the system to evaluate multiple signal paths simultaneously, selecting the most reliable one for position estimation, thereby improving measurement precision without significantly increasing overall device complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system changes the parameter of wireless communication section selection dynamically based on signal quality assessment. By evaluating reception quality metrics (such as signal strength, noise level, or other reliability indicators) for each section and selecting the section with the best quality, the system adapts to environmental conditions and maintains high position estimation accuracy despite obstacles or interference.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If multiple wireless communication sections are used for signal reception, then the measurement precision improves through multiple signal paths, but the device complexity increases

Engineering Contradiction:

Improveposition estimation accuracyVSAvoidnumber of wireless communication sections

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The communication device is divided into multiple wireless communication sections (first, second, third, and fourth sections), each capable of independently receiving signals. This segmentation allows the system to evaluate multiple signal paths simultaneously, selecting the most reliable one for position estimation, thereby improving measurement precision without significantly increasing overall device complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system extracts only the necessary information from multiple wireless communication sections. Instead of processing signals from all sections equally, the system evaluates reception quality for each section and selects only the best one for position estimation. This extraction approach maintains high measurement precision while avoiding the full complexity burden of processing all sections simultaneously.

Inventive Principle:

Principle #2Taking out (Extraction)

3Adaptability or versatility

If signal reception is performed in challenging environments with obstacles, then the adaptability improves, but the reliability of position estimation deteriorates

Engineering Contradiction:

Improveenvironmental adaptabilityVSAvoidposition estimation reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system changes the parameter of wireless communication section selection dynamically based on signal quality assessment. By evaluating reception quality metrics (such as signal strength, noise level, or other reliability indicators) for each section and selecting the section with the best quality, the system adapts to environmental conditions and maintains high position estimation accuracy despite obstacles or interference.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The system implements a feedback mechanism where reception quality is continuously evaluated for each wireless communication section, and this evaluation feeds back into the selection process. The control section uses this feedback information to dynamically select the most reliable section for position estimation, ensuring robust performance across varying environmental conditions including obstacles and interference.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS11765684B2Communication device and non-transitory computer readable storage medium

Publication Date: 2023.09.19 KK TOKAI RIKA DENKI SEISAKUSHO

AI summary

A communication device comprising: a plurality of wireless communication sections; and a control section configured to repeatedly perform a measurement process including transmission of a signal from a representative wireless communication section, reception of the signal from another communication device by the plurality of wireless communication sections, and calculation of a reliability parameter with regard to at least any of the wireless communication sections, control a selection process of selecting the representative wireless communication section each time the measurement process is repeated, and control a positional parameter determination process on a basis of the reliability parameter, the positional parameter determination process being a process of determining a positional parameter indicating a position of the other communication device on a basis of a plurality of a first incoming waves obtained through repetition of the measurement process.