Ranging Constellation for Wireless Positioning Accuracy
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Solution Overview
Problem
Existing wireless networks face challenges in achieving accurate and efficient ranging-based location estimation due to unpredictable accuracy and high power consumption, especially in dynamic environments.
Innovation Solution
The implementation of a ranging constellation formed by ranging capable anchor devices within a wireless network, which acts as a proxy for positioning services, allowing for improved location estimation and reduced power consumption by combining ranging and location services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ranging measurements are performed frequently to improve location accuracy, then location precision is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic ranging measurements with configurable intervals rather than continuous measurements. The network can dynamically adjust the measurement periodicity based on mobility patterns, service requirements, and power constraints, achieving a balance between location accuracy and power consumption.
Solution Approach 2:
The system dynamically adapts ranging measurement parameters including frequency, reference signal power, and constellation configuration based on real-time conditions such as device mobility, service type, and power availability. This allows optimization of the trade-off between accuracy and energy consumption.
2Measurement precision
If more anchor devices are deployed to improve ranging accuracy, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the ranging constellation into multiple groups or layers, allowing selective activation of anchor devices based on service requirements. Not all anchors need to be active simultaneously, reducing overall system complexity while maintaining accuracy when needed.
Solution Approach 2:
Anchor devices perform multiple functions including ranging, positioning, and network coordination. The same infrastructure supports both location services and general wireless communication, reducing the need for dedicated specialized devices.
3Adaptability or versatility
If ranging measurements are performed in dynamic environments with changing parameters, then adaptability is improved, but measurement precision deteriorates due to unpredictability
Solution Approach 1:
The system implements feedback mechanisms where ranging results and channel conditions are continuously monitored and used to adjust measurement parameters. This closed-loop approach compensates for environmental changes and maintains accuracy despite dynamic conditions.
Solution Approach 2:
The patent dynamically changes ranging parameters such as reference signal frequency, power level, and time interval based on detected environmental conditions. This allows the system to adapt to varying channel characteristics while maintaining measurement precision.
Data Source
AI summary
Enhanced ranging and positioning services in wireless networks The invention relates to a wireless system and methods for configuring ranging capable devices to form a ranging constellation to support ranging-based positioning services. Multiple challenges in improving location accuracy when using ranging measurements to derive the location coordinates are addressed. In particular, timing at which the location information can be derived from ranging measurements and methods used for ranging-based location estimation are described.