Indoor Location Determination Using Registered Positional Information
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Solution Overview
Problem
Existing electronic apparatuses lack effective methods to accurately determine a user's indoor location for safe driving support systems, leading to potential safety issues due to incorrect positioning determinations.
Innovation Solution
An electronic apparatus with a communication unit and processor that stores registered positional information and performs determination processing to specify whether the user is indoors based on received identification information from communication devices, using a combination of proximity and signal strength analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the electronic apparatus uses simple communication device detection to determine user location, then the device complexity is reduced, but the measurement precision of indoor location determination deteriorates
Solution Approach 1:
The patent combines multiple detection methods including communication device detection, positional information analysis, and signal strength measurement into a unified indoor location determination system. This merging allows the system to maintain relatively simple individual components while achieving high overall measurement precision through their integrated operation.
Solution Approach 2:
The determination processing unit serves multiple functions: it detects communication devices, analyzes their positional information, evaluates signal strengths, and synthesizes these data to determine indoor location. This multi-functionality allows a single component to perform complex tasks without proportionally increasing overall system complexity.
2Reliability
If the electronic apparatus performs accurate indoor location determination using multiple parameters, then the reliability of safe driving support is improved, but the device complexity increases
Solution Approach 1:
The system performs preliminary detection of communication devices and storage of their positional information before actual indoor location determination is needed. This advance preparation ensures that when determination is required, the system can quickly and reliably process pre-collected data without complex real-time computations, thereby improving reliability while managing complexity.
Solution Approach 2:
The patent introduces an identification information intermediary that links communication devices to their positional data. This intermediary layer simplifies the determination process by providing a structured interface between raw detection data and the final indoor location conclusion, enhancing reliability without proportionally increasing system complexity.
3Measurement precision
If the electronic apparatus uses registered positional information for location determination, then the measurement precision is improved, but the loss of time for data processing increases
Solution Approach 1:
The system pre-registers positional information of communication devices during periods when accurate real-time determination is not critical. This advance data collection and storage enables rapid comparison and determination operations later, improving measurement precision while minimizing time loss during actual determination events by using pre-processed reference data.
Data Source
AI summary
A communication unit can perform a wireless communication with a plurality of communication devices each transmitting allocated identification information. A storage stores, as registered positional information, positional information indicating a position of a first communication device included in the plurality of the communication devices or a position of the electronic apparatus at a time when the communication unit receives the identification information transmitted from the first communication device. A first determiner determines whether or not a position of a second communication device included in the plurality of the communication devices or a position of the electronic apparatus at a time when the communication unit receives the identification information transmitted from the second communication device is located within a predetermined range from the position indicated by the registered positional information in a case where the communication unit receives the identification information transmitted from the second communication device. An indoor specifying unit performs an indoor specification for specifying that a user of the electronic apparatus is located indoors based on a determination result in the first determiner.