Indoor Positioning via Phase Measurement on Shared Wireless Infrastructure
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Solution Overview
Problem
The existing methods for indoor positioning require separate construction of positioning and communication systems, leading to high initial costs and low accuracy, with inefficient use of resources.
Innovation Solution
An integrated indoor positioning system that combines a wireless network device, positioning headend, and control platform to establish communication connections with positioning tags, calculate phase information from radio wave signals, and determine position coordinates, reducing costs and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate positioning system and communication system are constructed, then positioning function is achieved, but initial cost is high and positioning accuracy is low
Solution Approach 1:
The patent combines the communication system and positioning system into a single integrated infrastructure. The communication base stations serve dual purposes: providing communication services and enabling positioning functions through phase difference measurement of radio wave signals. This merging eliminates the need for separate positioning hardware, reducing initial costs while improving positioning accuracy through sophisticated signal processing of existing communication signals.
2Measurement precision
If separate positioning system and communication system are constructed, then positioning function is achieved, but initial cost is high
Solution Approach 1:
The communication base stations are designed to perform multiple functions simultaneously: communication service provision and positioning measurement. By making the base stations universal devices that serve both communication and positioning purposes, the system eliminates the need for dedicated positioning infrastructure, thereby significantly reducing initial construction costs while maintaining high positioning accuracy through phase difference calculation methods.
3Productivity
If separate positioning system and communication system are constructed, then positioning function is achieved, but use efficiency cannot be quickly displayed
Solution Approach 1:
The integration of positioning and communication systems into a unified infrastructure enables immediate utilization of existing communication assets for positioning purposes. The shared hardware and network resources allow the system to quickly demonstrate use efficiency without requiring separate deployment of positioning infrastructure, while the centralized control platform manages both communication and positioning functions efficiently.
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
The system enhances positioning accuracy while minimizing initial costs by integrating communication and positioning systems, enabling real-time monitoring and alerting for abnormal situations.
Implementation Method 1
the positioning headend 101 receives the radio wave signals sent by the positioning tags 102, and calculates phase information of the positioning tags 102 according to the radio wave signals
Data Source
AI summary
An indoor positioning system includes: a wireless network device, configured to receive a positioning request initiated by positioning tag, and send a handshake communication request; a positioning headend, configured to communicate with the wireless network device and the positioning tag according to the handshake communication request, and collect radio wave signals sent by the positioning tag, and calculate the phase information of the positioning tag according to the radio wave signal; a positioning unit, configured to calculate position coordinate information of the positioning tag according to the phase information, thereby improving the positioning accuracy and reducing the cost.