Zero-Power Tag Positioning Using Backscatter Signal Measurement
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Solution Overview
Problem
Existing wireless positioning technologies face challenges in accurately determining the position of devices, especially in environments with poor network coverage, due to limitations in signal bandwidth and antenna configuration, particularly for zero-power or low-power electronic tags.
Innovation Solution
A communication method and apparatus that utilizes zero-power electronic tags to send signals for measurement, enabling accurate positioning by using backscattering communication and load modulation techniques, which allow for precise determination of device location through measurement results from multiple tags.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional wireless positioning technology is used, then positioning function can be provided, but positioning accuracy deteriorates in poor network environments
Solution Approach 1:
The patent introduces electronic tags as intermediary objects that reflect positioning signals between base stations and target devices. These tags act as mediators to enhance signal measurement capability in environments where direct signal paths are blocked or weak, thereby improving positioning accuracy without requiring improved network coverage.
Solution Approach 2:
The patent changes the measurement parameters by having electronic tags measure reference signals and report measurements to base stations. This parameter transformation allows the system to utilize tag-based measurements instead of direct device-to-base station measurements, improving accuracy in poor network conditions.
2Measurement precision
If more bandwidth and antenna resources are allocated, then positioning accuracy can be improved, but device complexity and cost increase
Solution Approach 1:
The electronic tags perform self-service by autonomously measuring reference signals and reporting measurements to base stations. This distributes the measurement function across multiple low-cost tags rather than requiring complex signal processing in the target device or base station, reducing overall system complexity while improving accuracy through multiple measurement points.
Solution Approach 2:
The patent uses multiple electronic tags as simplified copies or proxies for direct device positioning. Instead of equipping the target device with complex positioning capabilities, multiple simple tags are deployed to provide measurement data, achieving accurate positioning through data aggregation rather than device complexity.
3Ease of manufacture
If zero-power electronic tags are used, then deployment cost is reduced, but signal measurement capability is limited
Solution Approach 1:
The patent segments the positioning function by separating signal measurement from signal transmission. Zero-power tags only need to perform simple signal reflection and basic measurement, while complex processing is done by base stations. This segmentation allows ultra-low-cost tags to provide useful measurement data without requiring full transceiver functionality.
Solution Approach 2:
The electronic tags serve multiple functions: they act as positioning reference points, signal reflectors, and measurement devices simultaneously. This multi-functionality allows simple zero-power tags to contribute to positioning accuracy without requiring dedicated high-capability measurement hardware, reducing deployment cost while maintaining measurement capability.
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
Improves positioning accuracy by leveraging zero-power devices with backscattering communication, reducing inaccuracies in poor network environments and enabling large-scale, cost-effective deployments suitable for various scenarios, including indoor and harsh conditions.
Implementation Method 1
a first electronic tag sends the first signal... leverages zero-power devices with backscattering communication
Data Source
AI summary
A communication method, apparatus and device, and a storage medium, a chip, a product and a program are provided. The method includes that a first electronic tag sends a first signal, the first signal being used for a first device to perform measurement to obtain a first measurement result or being used for a second device to perform measurement to obtain a second measurement result, and the first measurement result or the second measurement result being used for determining location information of the second device.