Adaptive Sensor Activation for Wireless Positioning
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Solution Overview
Problem
Current methods for fusing sensor data with position determinations in wireless communication networks are inefficient, as they require mobile devices to constantly send sensor data to network devices, consuming RF resources and increasing energy consumption, without the ability to deactivate sensor data reporting when it is not beneficial.
Innovation Solution
Implementing adaptive sensor activation and deactivation mechanisms during positioning sessions, where trigger conditions determine whether to activate or deactivate sensor data reporting, allowing for dynamic switching between active and inactive modes based on accuracy, signal quality, and other factors, using messages between the mobile device and location server.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensor data is constantly reported from mobile device to location server, then positioning accuracy is improved, but RF resource consumption and energy consumption increase
Solution Approach 1:
The patent implements dynamic activation and deactivation of sensor data reporting based on real-time positioning needs. The location server sends activation/deactivation messages to the mobile device depending on whether sensor fusion is currently beneficial for positioning accuracy, transforming the static constant-reporting approach into a dynamic adaptive system that adjusts behavior based on current conditions.
Solution Approach 2:
The system changes the parameter of sensor data reporting from constant to conditional based on trigger conditions. When positioning accuracy benefits from sensor fusion, the system transitions to active reporting mode; when accuracy is sufficient without sensor data, it transitions to inactive mode, thereby optimizing the balance between precision and energy consumption.
2Reliability
If sensor data reporting is continuously activated, then positioning reliability is improved, but device complexity and processing overhead increase
Solution Approach 1:
The location server continuously monitors positioning session conditions and provides feedback to the mobile device in the form of activation/deactivation messages. This feedback mechanism allows the system to adjust sensor reporting based on current positioning needs, maintaining reliability when necessary while reducing processing overhead when sensor fusion is not required.
Solution Approach 2:
The system dynamically adjusts the complexity of processing by activating sensor data collection and fusion only when positioning reliability benefits from it. The mobile device and location server cooperate to activate/deactivate reporting based on real-time conditions, transforming a static high-complexity system into a dynamic one that adapts processing requirements to actual needs.
Data Source
AI summary
Aspects of sensor activation or deactivation for positioning a mobile device in a wireless communication network are disclosed. These aspects include, during a positioning session between the mobile device and a location server, determining with the location server that a first trigger condition or a second trigger condition has been met regarding reporting, by the mobile device to the location server, of sensor data from one or more sensors of the mobile device, where: the first trigger condition may comprise a trigger condition for activating the reporting, and the second trigger condition may comprise a trigger condition for deactivating the reporting. Aspects further include sending, from the location server to the mobile device, a message may comprise either: instructions to activate the reporting responsive to determining the first trigger condition has been met, or instructions to deactivate the reporting responsive to determining the second trigger condition has been met.