Wireless Communication Section Selection for Position Estimation
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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 accuracy of angle and distance estimation in wireless communication systems.
Innovation Solution
A communication device with multiple wireless communication sections and a control section that performs a repetition process to select a representative section based on calculated reliability parameters, ensuring that only appropriate incoming waves are used for processing, thereby improving estimation accuracy by adapting to radio propagation environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless signal transmission is performed in obstacle environments, then communication coverage is extended, but estimation accuracy of angle of incidence deteriorates
Solution Approach 1:
The system segments the wireless communication function into multiple independent wireless communication sections (antennas), each capable of receiving signals independently. By dividing the reception function across multiple sections, the system can select the most reliable section for angle estimation, thereby maintaining accuracy even when obstacles are present in certain paths.
Solution Approach 2:
The system dynamically changes the selection of representative wireless communication sections based on measured parameters such as signal strength and angle of incidence reliability. By adjusting which section is deemed 'representative' based on real-time parameter evaluation, the system adapts to varying propagation conditions and maintains estimation accuracy across different environments.
2Reliability
If multiple wireless communication sections are used for signal reception, then reliability of position estimation is improved, but device complexity increases
Solution Approach 1:
The system performs preliminary measurement processes to evaluate the reliability of each wireless communication section before using them for position estimation. By pre-assessing parameters such as signal quality and propagation conditions, the system identifies suitable representative sections in advance, ensuring reliable estimation without requiring complex real-time processing of all sections simultaneously.
Solution Approach 2:
The system uses only a subset of the available wireless communication sections for angle estimation at any given time, selecting only those sections that meet predetermined reliability criteria. This partial action approach avoids the complexity of processing all sections equally, while still achieving high reliability by focusing on the most suitable sections for each estimation task.
3Measurement precision
If representative wireless communication section is selected based on measurement process, then accuracy of angle estimation is improved, but processing time increases
Solution Approach 1:
The wireless communication sections autonomously perform measurement processes and self-evaluate their own reliability parameters. Each section can independently determine its suitability as a representative section based on its received signal characteristics, reducing the need for centralized complex processing and minimizing additional processing time while maintaining accuracy.
Data Source
AI summary
A communication device comprising: a plurality of wireless communication sections; and a control section configured to control a repetition process of repeatedly performing a measurement process, on a basis of a reliability parameter calculated through the measurement process, and control a selection process of selecting a representative wireless communication section each time the measurement process is repeated in the repetition process, the measurement process including transmission of a signal from the representative wireless communication section, reception of the signal by the plurality of wireless communication sections, and calculation of the reliability parameter with regard to at least any of the wireless communication sections.