Positioning Electronic Device Using Cellular and WLAN Data
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Solution Overview
Problem
Existing electronic devices face challenges in determining precise positions efficiently while minimizing power consumption, as GPS module operations are power-intensive, and relying solely on cellular or Wireless LAN data is inefficient in terms of power management.
Innovation Solution
An electronic device is configured to receive cellular data from base stations, predict its position based on this data, and determine its location using information from Wireless LAN base stations, allowing for more accurate and efficient positioning with reduced power consumption by leveraging both cellular and Wireless LAN data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS module is used to determine position, then positioning accuracy is improved, but power consumption increases
Solution Approach 1:
The system dynamically switches between different positioning methods (GPS, cellular, WLAN) based on current requirements. The processor determines whether to use GPS continuously or switch to alternative methods with lower power consumption, making the positioning system adaptive to changing conditions rather than static
Solution Approach 2:
Cellular and WLAN positioning data serve as intermediary solutions between GPS and no-positioning. These intermediate methods provide acceptable positioning accuracy with lower power consumption, acting as mediators that balance the trade-off between accuracy and energy usage
2Use of energy by moving object
If cellular or WLAN data alone is used for positioning, then power consumption is reduced, but positioning accuracy deteriorates
Solution Approach 1:
The system merges multiple positioning data sources (GPS, cellular, WLAN) into a unified positioning solution. The processor integrates information from different sources to achieve accurate positioning while managing power consumption, combining the strengths of each method rather than relying on a single source
3Measurement precision
If whole cellular map or WLAN map is stored separately, then positioning capability is improved, but storage requirements increase
Solution Approach 1:
The processor performs multiple functions using the stored maps - not only positioning but also predicting future positions and determining whether to activate GPS. The cellular and WLAN maps serve as universal data structures that support multiple positioning-related operations, maximizing their utility beyond simple location determination
4Reliability
If GPS module operates continuously to maintain positioning, then positioning availability is improved, but power consumption increases
Solution Approach 1:
Instead of continuous GPS operation, the system uses periodic positioning updates combined with prediction algorithms. The processor periodically determines position using low-power cellular/WLAN data and predicts position between updates, maintaining positioning availability while enabling periodic rather than continuous operation
Data Source
AI summary
An electronic device may comprise a communication interface and a processor configured to control the communication interface to receive cellular data from at least one cellular base station, to predict a position of the electronic device based on the received cellular data, to receive information about at least one wireless LAN base station, and to determine the position of the electronic device based information about the at least one wireless LAN base station and the predicted position.