GNSS Receiver Dynamic State Switching for Power Optimization
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Solution Overview
Problem
Conventional GNSS receivers waste power by performing satellite information updates at a fixed frequency, which is inefficient given varying user behaviors and environmental conditions, leading to unnecessary power consumption.
Innovation Solution
A method and system for dynamically switching the GNSS receiver between different operation states based on user behaviors and environmental conditions, using positioning information such as speed, satellite distribution, signal strength, location, and data from motion sensors, WLAN, Bluetooth, or UV light sensors to adjust the frequency of satellite information updates, thereby optimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If satellite information collections/updates are performed constantly to improve positioning accuracy, then positioning accuracy is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic switching between different operation states (first operation state with higher update frequency and second operation state with lower update frequency) based on positioning requirements and environmental conditions. This resolves the contradiction by making the update frequency adaptive rather than fixed, allowing the system to maintain positioning accuracy when needed while saving power when high accuracy is not required.
Solution Approach 2:
The patent changes the parameter of satellite information update frequency based on different operation states and environmental conditions. By adjusting this parameter dynamically according to actual positioning needs, the system achieves optimal balance between positioning accuracy and power consumption, avoiding both constant high-frequency updates and fixed low-frequency updates.
2Ease of operation
If satellite information collections/updates are performed periodically with a fixed frequency to simplify operation, then ease of operation is improved, but power consumption efficiency deteriorates
Solution Approach 1:
The patent introduces dynamic state switching that automatically adjusts update frequency based on positioning accuracy requirements and environmental conditions (such as whether the device is moving or stationary). This maintains ease of operation through automatic control while dramatically improving power consumption efficiency by avoiding unnecessary updates during periods when high accuracy is not needed.
Solution Approach 2:
The patent incorporates feedback mechanisms that monitor positioning accuracy requirements and environmental conditions to determine appropriate operation states. This feedback loop enables the system to automatically adjust update frequency, maintaining operational simplicity while optimizing power efficiency based on actual conditions.
Data Source
AI summary
A method for controlling a GNSS receiver includes: providing a state switching criterion; obtaining at least one positioning information; determining whether to switch from a first operation state to a second operation state according to the obtained positioning information and the state switching criterion, a power consumption of GNSS receiver operating under the first operation state and the second operation state is different; the obtained positioning information includes at least one of a speed value of GNSS receiver, a satellite distribution value of GNSS receiver, a satellite signal strength value of GNSS receiver, a location identification of GNSS receiver, instant motion information from a motion sensor, or location information from a WLAN device, a Bluetooth device or a UV light sensor.