UWB Distance Measurement for Wireless Authentication
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Solution Overview
Problem
Existing unauthorized communication prevention systems require significant changes to conventional systems and lack efficient methods to determine authorized communication based on distance measurements between terminals and communication peers.
Innovation Solution
A system and method that utilize a measurement unit to obtain a distance value between a terminal and a communication peer, determining its appropriateness, and controlling authentication through wireless communication, without disrupting the conventional system's operation, using UWB radio waves to measure distance and validate authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If distance measurement is performed during authentication communication, then unauthorized communication can be detected, but the authentication communication sequence is extended
Solution Approach 1:
The measurement unit performs distance measurement in advance during a non-communication period before the authentication communication sequence begins. This preliminary action ensures that distance verification is completed without extending the authentication process, as the measurement is already available when authentication starts.
Solution Approach 2:
The system separates the distance measurement function from the authentication communication sequence by utilizing a distinct non-communication period. This segmentation allows both functions to operate independently without interfering with each other's timing and performance.
2Measurement precision
If measurement unit operates continuously to ensure distance verification, then measurement accuracy is maintained, but power consumption increases
Solution Approach 1:
The measurement unit operates periodically during designated non-communication periods rather than continuously. This periodic operation maintains measurement capability while significantly reducing power consumption by keeping the measurement unit inactive during authentication communication and other active periods.
Solution Approach 2:
The system utilizes existing non-communication periods naturally occurring in the communication schedule for measurement operations, without requiring additional dedicated measurement time slots or continuous operational resources.
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
Effectively prevents unauthorized communication by accurately determining authorized communication without extending the authentication communication sequence, allowing seamless integration with existing systems and reducing power consumption.
Implementation Method 1
measuring a distance between the terminal and the communication peer, based on a time of flight of a UWB radio wave
Data Source
AI summary
A system that prevents accomplishment of unauthorized communication between a terminal and a communication peer is provided. The system includes a measurement unit and a process execution unit. The measurement unit is arranged on at least one of the terminal or the communication peer to obtain a measured value corresponding to a distance between the terminal and the communication peer. The process execution unit determines whether the measured value is appropriate and controls actuation for authentication of the terminal through wireless communication performed between the terminal and the communication peer based on the determination result. The measurement unit executes a process for obtaining the measured value in a time period during which the communication for the authentication is not performed.