Wireless Terminal Tracking via Relay Timestamps
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Solution Overview
Problem
Existing data analysis systems for wireless terminals moving between relay apparatuses cannot accurately determine the presence or absence of a wireless terminal in multiple communication areas, leading to incomplete information about the terminal's movement.
Innovation Solution
A data analysis system comprising multiple relay apparatuses and a data analysis apparatus that determine the presence of a wireless terminal in each communication area at fixed time intervals, transmit this information along with the time of determination, and use this data to analyze and display the terminal's position, moving distance, and path across the area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If only one relay apparatus transmits wireless terminal information to the data processing apparatus, then communication overhead is reduced, but information completeness about terminal movement is insufficient
Solution Approach 1:
The patent merges information from multiple relay apparatuses by having each relay transmit determination results about wireless terminal presence in its communication area to a data processing apparatus. This consolidation of information from multiple sources resolves the contradiction by achieving complete information about terminal movement across areas without requiring complex continuous monitoring, as each relay independently contributes its local determination data.
2Reliability
If broadcast communication is used for data transmission, then seamless communication is enabled, but energy consumption increases
Solution Approach 1:
The patent extracts only the essential determination result information (presence/absence of wireless terminal) from each relay apparatus and transmits only this specific data to the data processing apparatus. This selective extraction of necessary information maintains seamless communication monitoring while reducing energy consumption compared to continuous broadcast communication, as relays transmit minimal structured data only when determination results change.
3Measurement precision
If determination is performed continuously, then position accuracy is improved, but processing load increases
Solution Approach 1:
The patent implements periodic determination at fixed time intervals by each relay apparatus regarding wireless terminal presence in its communication area. This periodic action maintains position accuracy by regularly updating determination results while improving processing efficiency compared to continuous monitoring, as each relay performs determinations only at scheduled intervals and transmits results accordingly.
Data Source
AI summary
A data analysis system includes relay apparatuses for communicating with a wireless terminal in a communication area of the relay apparatus, and a data analysis apparatus connected to the relay apparatuses through a communication network for analyzing data regarding the wireless terminal, wherein each relay apparatus includes a determiner for determining whether the wireless terminal is present in the communication area at fixed time intervals, a time imparter for imparting a time at which the determination is performed to a determination result, and a transmitter and receptor for transmitting the determination result to the data analysis apparatus with the imparted time, and the data analysis apparatus includes a transmitter and receptor for receiving the determination result and the imparted time, an analyzer for analyzing information on the wireless terminal at each time based on the time and the determination result, and a display for displaying an analysis result.