Indoor Positioning via Wireless Phase Measurement Integration
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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 can be achieved, but initial cost increases and positioning accuracy decreases
Solution Approach 1:
The patent combines the communication system and positioning system into a single integrated infrastructure. The wireless network devices (access points) simultaneously provide communication services and positioning functions by measuring phase differences of radio wave signals. This merging eliminates the need for separate positioning hardware, reducing device complexity while improving positioning accuracy through the use of existing communication infrastructure.
Solution Approach 2:
The wireless network devices are designed to perform multiple functions: both communication and positioning. By making the access points universal devices that can handle both data transmission and phase-based positioning measurements, the system avoids duplicating infrastructure and achieves higher positioning accuracy without increasing overall system complexity.
2Measurement precision
If separate positioning system and communication system are constructed, then positioning function can be achieved, but initial cost increases
Solution Approach 1:
The patent merges positioning functionality into the existing communication infrastructure, eliminating the need to deploy separate positioning hardware. The wireless network devices already present in the environment are utilized for both communication and positioning purposes, thereby reducing the quantity of additional substances (hardware) required and lowering initial costs while maintaining high positioning accuracy.
Solution Approach 2:
By designing wireless network devices with universal functionality to perform both communication and positioning tasks, the system avoids the need to purchase and install separate positioning equipment. This multi-functionality approach reduces the quantity of additional hardware substances needed, thereby reducing initial deployment costs while achieving accurate positioning.
3Productivity
If integrated system is implemented, then initial cost decreases and positioning accuracy improves, but system integration complexity increases
Solution Approach 1:
The patent combines communication and positioning functions within the same wireless network devices, allowing both services to operate using a single infrastructure. This merging improves productivity by maximizing the utilization of existing hardware resources while the integration complexity is managed through a unified system architecture that processes both communication and positioning data through centralized controllers.
Solution Approach 2:
The patent introduces positioning controllers and communication controllers as intermediary components that manage the integration between communication and positioning functions. These controllers act as mediators that coordinate the operations of wireless network devices, handling both communication protocols and positioning calculations, thereby improving overall system productivity while managing integration complexity through specialized intermediary components.
4Measurement precision
If phase difference measurement is used for positioning, then positioning accuracy improves, but signal processing complexity increases
Solution Approach 1:
The patent introduces positioning controllers as intermediary devices that specialize in handling the complex signal processing required for phase difference measurements. These controllers receive radio wave signals from wireless network devices, perform the complex phase calculations, and determine position coordinates. This intermediary approach maintains high positioning accuracy while managing signal processing difficulty by dedicating specialized components to handle the complex measurements.
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 lowering initial costs by integrating communication and positioning systems, enabling real-time monitoring and alerting for abnormal situations.
Implementation Method 1
the positioning headend receives the radio wave signals sent by the positioning tags, and calculates phase information of the positioning tags 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.