Communication Device Wireless Signal Path Selection
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Solution Overview
Problem
Current technologies for determining the position of a device using wireless signals, such as UWB, face limitations in accurately measuring distance due to inaccuracies in detecting the direct signal path, leading to reduced ranging accuracy.
Innovation Solution
A communication device with multiple wireless communication sections correlates signal changes to detect specific reception times, calculates reliability parameters, and selects the optimal section to transmit signals, thereby improving distance measurement accuracy by identifying the most suitable signal path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple wireless communication sections are used to receive signals, then the reliability of signal detection is improved, but the device complexity increases
Solution Approach 1:
The communication device is divided into multiple wireless communication sections, each independently capable of receiving and processing signals. This segmentation allows the system to evaluate multiple signal paths simultaneously, improving detection reliability by selecting the optimal path while maintaining manageable complexity through modular architecture
Solution Approach 2:
The system changes the parameter of signal path selection by evaluating multiple possible reception paths and choosing the one with the highest reliability parameter. This allows the device to adapt to different environmental conditions and maintain high detection reliability without permanently increasing operational complexity
2Speed
If correlation computation is performed at designated intervals, then the processing speed is improved, but the measurement precision of reception time decreases
Solution Approach 1:
The system performs preliminary correlation computation at designated intervals to identify candidate reception times. This preliminary action allows for fast initial processing while maintaining the ability to achieve high precision through subsequent refinement steps
Solution Approach 2:
The correlation computation results are used as feedback to determine the optimal reception time. By iteratively refining the measurement based on correlation values, the system achieves high precision reception time detection while maintaining efficient processing through interval-based computation
3Measurement precision
If the direct signal path is accurately detected, then the distance measurement accuracy is improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The signal detection process is segmented into multiple independent wireless communication sections, each evaluating different signal paths. This allows the complex task of direct path detection to be divided into simpler sub-tasks, reducing the overall difficulty while improving accuracy through comparative evaluation
Solution Approach 2:
The system changes the detection approach by evaluating multiple signal paths and selecting the one with the optimal reliability parameter. This parameter-based selection simplifies the detection process compared to attempting to directly identify the direct path, reducing measurement difficulty while maintaining high accuracy
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the accuracy of distance measurement between devices by selecting the wireless communication section with the highest reliability parameter, ensuring precise detection of the direct signal path, thus improving ranging accuracy.
Implementation Method 1
correlating a first signal that is transmitted from the other communication device and that includes change in amplitude with respective second signals obtained when the plurality of wireless communication sections receive the first signal
Implementation Method 2
measure a distance between the transmission communication section and the other communication device on a basis of the specific reception time detected from the correlation computation result
Data Source
AI summary
A communication device includes: a plurality of wireless communication sections, each of which is configured to wirelessly receive a signal from another communication device; and a control section configured to select a wireless communication section from which a specific reception time corresponding to an optimum parameter that is a reliability parameter indicating that the specific reception time is most appropriate for a processing target is detected, as a transmission communication section serving as a wireless communication section that transmits a signal from among the plurality of wireless communication sections, and configured to measure a distance between the transmission communication section and the other communication device on the basis of the specific reception time detected from a correlation computation result obtained from signals transmitted/received between the other communication device and the selected transmission communication section.