Dynamic Positioning Switch for Mobile Alert Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Portable communication devices face power consumption issues due to continuous location calculation, especially in urban and indoor environments where GPS signals are obstructed, leading to reduced battery life and increased time to first fix for Location Based Services applications.
Innovation Solution
A method that calculates the distance between the user equipment (UE) and an alerting area, switching to an alternate positioning method like cell-ID when far away and using GPS when close, to optimize energy consumption by reducing frequent satellite-based positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS positioning is used continuously to monitor location for alerting, then location accuracy is improved, but battery consumption increases
Solution Approach 1:
The system dynamically switches between GPS positioning and cell-ID positioning based on the device's distance from the alerting area. When far from the alerting area, cell-ID positioning is used to conserve battery. When close to the alerting area, GPS positioning is activated to provide accurate location monitoring and trigger alerts. This dynamic adaptation resolves the contradiction by adjusting the positioning method according to operational context.
Solution Approach 2:
The system changes the positioning parameter (positioning method) based on distance from the alerting area. By monitoring the distance parameter and switching between positioning systems accordingly, the system maintains location accuracy when needed while reducing energy consumption during distant travel phases.
2Measurement precision
If GPS positioning is used continuously to monitor location for alerting, then alert accuracy is improved, but operating time decreases
Solution Approach 1:
The system dynamically adjusts the positioning strategy based on real-time distance calculations from the alerting area. During distant travel, low-power cell-ID positioning extends operating time. When approaching the alerting area, the system switches to GPS positioning to ensure accurate alert triggering, thus maintaining alert accuracy while maximizing operating time.
Solution Approach 2:
The system performs periodic distance checks and switches positioning methods periodically based on the device's proximity to the alerting area, rather than using GPS continuously. This periodic switching between positioning modes extends battery operating time while maintaining alert accuracy when needed.
3Measurement precision
If positioning is conducted frequently to get accurate location, then location monitoring accuracy is improved, but power consumption increases
Solution Approach 1:
The system dynamically selects the positioning method based on distance from the alerting area. When far away, cell-ID positioning with lower frequency provides sufficient monitoring accuracy and consumes less power. When close to the alerting area, GPS positioning is used for precise location monitoring to trigger alerts accurately, optimizing the balance between monitoring accuracy and power consumption.
Solution Approach 2:
The system changes the positioning parameter (method and frequency) based on the distance parameter. By adjusting these parameters according to proximity to the alerting area, the system maintains adequate location monitoring accuracy while minimizing energy loss during distant travel phases.
4Use of energy by moving object
If cell-ID positioning is used, then power consumption is reduced, but location accuracy decreases
Solution Approach 1:
The system dynamically switches between cell-ID positioning (low power, lower accuracy) and GPS positioning (high power, high accuracy) based on distance from the alerting area. During distant travel, cell-ID positioning suffices and conserves power. When approaching the alerting area, GPS positioning is activated to provide the necessary location accuracy for accurate alert triggering, thus resolving the accuracy-power tradeoff.
Solution Approach 2:
The system changes the positioning method parameter based on the distance parameter from the alerting area. By adjusting this parameter, the system uses cell-ID positioning for power efficiency during distant phases and GPS positioning for accuracy during critical proximity phases, optimizing both power consumption and location accuracy according to operational context.
Data Source
AI summary
A method and apparatus for providing an alert on a portable communication device such as a user equipment (UE) entering an alerting area is provided. The UE runs a GPS engine continuously to estimate the location of the UE from the time the alert system is activated. The method and apparatus provide an alert system on a UE by calculating the distance between the UE and alerting area. Further, the method and apparatus enable using different positioning systems based on the distance of the UE from the alerting area, thereby reducing the power consumption of the UE battery.