Ambient Power Positioning Signals for Low-Overhead Wireless Localization
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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 restrict their ability to transmit wideband positioning reference signals and measure angles accurately.
Innovation Solution
AMP devices generate 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 AMP devices transmit wideband positioning reference signals and perform angle measurement, then positioning accuracy is improved, but power consumption exceeds the device capability
Solution Approach 1:
The patent combines energy harvesting and positioning functions into a single signal processing framework. The AMP device receives a target signal that serves dual purposes: it provides energy for operation through energy harvesting and enables positioning through angle measurement of the same signal, eliminating the need for separate wideband positioning reference signals
Solution Approach 2:
The received target signal is utilized for multiple functions simultaneously - it serves as both an energy source for the AMP device and as a positioning reference signal for angle measurement. This multi-functional use of the signal resolves the contradiction by achieving positioning capability without requiring additional power-consuming transmissions
2Measurement precision
If AMP devices transmit positioning reference signals, then positioning capability is improved, but signaling overhead increases
Solution Approach 1:
The patent merges the positioning reference signal function with the energy harvesting signal. The AMP device performs angle measurement on the received target signal used for energy harvesting, eliminating the need for separate positioning reference signals and reducing signaling overhead
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 effectively harvest energy and perform positioning with reduced signaling overhead, enhancing system efficiency and accuracy.
Implementation Method 1
The AMP device harvests energy through the first signal
Data Source
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AI summary
Embodiments of the present disclosure provide a method for wireless communication and a device. An ambient power (AMP) device can generate, based on at least one target signal received, a first signal and a second signal that have an association relationship, harvest energy through the first signal, and perform positioning based on the second signal, thereby reducing signaling overhead required for positioning by the AMP device and improving system efficiency. 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.