Control Device for Accurate Positional Relationship Estimation
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Solution Overview
Problem
Existing techniques for estimating the positional relationship between devices via wireless signals face accuracy issues in environments with shielding or multipath interference, without providing effective measures to mitigate these problems.
Innovation Solution
A control device and system that utilize communication devices with three or more antennas to estimate positional relationships by comparing reliability parameters of signals received, and performing control to select the most appropriate signal for accurate estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal transmission and reception is performed in environments with shielding or multipath interference, then communication can be maintained, but estimation accuracy of positional relationship deteriorates
Solution Approach 1:
The patent changes the parameter of signal selection by introducing reliability parameters (such as signal strength, quality metrics) to evaluate and select the most appropriate signal for positional relationship estimation, thereby maintaining accuracy despite shielding or multipath interference
Solution Approach 2:
The patent implements feedback mechanisms by calculating reliability parameters based on received signals and using this information to select optimal signals for estimation, creating a closed-loop system that adapts to environmental conditions and maintains estimation accuracy
2Measurement precision
If multiple antennas are used for signal reception, then signal selection capability is improved, but device complexity increases
Solution Approach 1:
The patent segments the signal processing task by evaluating reliability parameters for each received signal separately and then selecting the best signal, breaking down the complex multi-antenna processing into manageable evaluation and selection stages
Solution Approach 2:
The patent introduces reliability parameters as additional evaluation criteria to enable intelligent signal selection from multiple antennas, transforming the processing approach from simple signal combination to parameter-based signal evaluation and selection
Data Source
AI summary
To estimate a positional relationship between devices having transmitted and received signals with higher accuracy.A control device includes a control unit that compares reliability parameters that are indexes indicating a degree of whether or not a signal is appropriate as a processing target for estimating a positional relationship between each of the plurality of communication devices and the other communication device, calculated on the basis of the signals received from the other communication device by the communication device, and performs control for estimating the positional relationship on the basis of a signal transmitted and received between the communication device that has received a signal that is more appropriate as a processing target for estimating the positional relationship and the other communication device.