Ambient Power Positioning With Associated Harvesting Signals
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Solution Overview
Problem
Ambient power (AMP) devices face challenges in performing accurate positioning due to their limited power and processing capabilities, which hinder the use of conventional timing and angle-based positioning methods.
Innovation Solution
The AMP device generates a first signal and a second signal with an association relationship based on received target signals, harvesting energy through the first signal and performing positioning using the second signal, thereby reducing signaling overhead and improving system efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional timing and angle-based positioning methods are used, then positioning accuracy is improved, but power consumption and device complexity increase beyond AMP device capabilities
Solution Approach 1:
The patent applies multi-functionality by enabling the AMP device to perform both energy harvesting and positioning operations using the same received signal from the base station. The device extracts positioning information (time of arrival, angle of arrival) from the signal while simultaneously harvesting energy from the same signal, eliminating the need for separate positioning transmitters and reducing overall power consumption.
Solution Approach 2:
The AMP device utilizes the incoming communication signal from the base station to serve dual purposes: the signal provides positioning data and simultaneously charges the device's battery through energy harvesting. This self-service approach allows the device to power itself while determining its location, without requiring additional power-consuming positioning infrastructure.
2Measurement precision
If conventional positioning methods are used, then positioning accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent implements universality by designing the AMP device to extract multiple types of positioning information (time of arrival, angle of arrival, signal strength) from a single received signal while simultaneously harvesting energy. This eliminates the need for separate positioning hardware and complex multi-signal processing systems, reducing device complexity while maintaining positioning accuracy.
Solution Approach 2:
The patent merges the positioning function and energy harvesting function into a unified system that operates on the same received signal. By combining these functions, the device avoids the complexity of separate positioning receivers and energy harvesting circuits, reducing overall system complexity while achieving both positioning accuracy and power supply.
3Productivity
If multiple signals are used for energy harvesting and positioning, then system efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent applies universality by enabling a single signal to serve dual purposes: carrying positioning information and providing energy for the AMP device. This eliminates the need for separate positioning signals and energy transmission signals, significantly reducing signaling overhead while maintaining system efficiency for both positioning and power supply operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows AMP devices to efficiently harvest energy and achieve accurate positioning with reduced complexity and cost, expanding their applicability in various scenarios such as smart homes and smart manufacturing.
Implementation Method 1
The AMP device harvests energy through the first signal
Data Source
AI summary
A method for wireless communication, an ambient power (AP) device, and a first device are provided. The method for wireless communication includes the following. An AMP device receives at least one target signal transmitted by a first device, where the at least one target signal is used to generate a first signal and a second signal that have an association relationship. The AMP device harvests energy through the first signal, and performs positioning based on the second signal.