Mobile Device Positioning Cycle Adjustment via Environment Signals
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Solution Overview
Problem
Existing location-based services (LBS) for mobile devices face challenges in accurately adjusting positioning cycles without knowing the destination, leading to inefficient power consumption and limited accuracy due to reliance on distance, direction, and movement speed calculations.
Innovation Solution
A method that adjusts the positioning cycle of a mobile device based on the location change rate value derived from environment record information, including received signal strength and signal source identifiers, without requiring a known destination, using signals like cellular, WiFi, Bluetooth, or geomagnetic field signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If positioning cycle is adjusted based on distance to destination or movement parameters, then positioning power consumption is reduced, but the solution is not applicable when destination is not known and accuracy is limited by positioning technology precision
Solution Approach 1:
The patent introduces environment signals (cellular, WiFi, Bluetooth, geomagnetic field) as intermediary elements to infer location change rate. Instead of directly using positioning technology or motion sensors, the system uses these ambient signals as mediators to indirectly determine movement characteristics, thereby avoiding the limitations and power consumption of direct positioning while still enabling positioning cycle adjustment.
Solution Approach 2:
The patent replaces the mechanical/physical positioning system (GPS, motion sensors) with an electromagnetic field-based detection system. By substituting direct positioning hardware with environment signal analysis, the system achieves location change rate estimation without the power consumption and accuracy limitations of traditional positioning technologies.
2Measurement precision
If positioning technology or motion sensor is used to calculate distance and movement parameters, then positioning cycle adjustment is enabled, but accuracy is limited and extra power consumption is caused
Solution Approach 1:
The patent makes the mobile device use its own existing environment signal reception capabilities to determine location change rate. The device already receives cellular, WiFi, Bluetooth, and geomagnetic field signals for normal operation; by analyzing changes in these existing signals, the system derives positioning information without activating additional power-consuming positioning hardware or sensors.
Solution Approach 2:
The patent changes the measurement parameters from direct position coordinates (obtained via GPS) to environment signal characteristics (RSSI, signal presence, signal strength). By transforming the measurement approach from absolute position to relative signal变化, the system achieves location change rate estimation with lower power consumption and potentially higher precision in urban environments where signal patterns provide fine-grained location information.
Data Source
AI summary
A positioning cycle adjustment method comprising: obtaining, by a mobile device, a group of environment record information in a current environment; determining, by the mobile device, a location change rate value of the mobile device based on obtained N groups of environment record information, where N is greater than or equal to 2; and then adjusting a positioning cycle of the mobile device based on the determined location change rate value.