Adaptive Indoor Positioning via Master-Slave Signal Segmentation
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Solution Overview
Problem
Existing position location systems, such as GPS, are ineffective indoors and in urban environments due to weak signal strength and are vulnerable to jamming, with limited accuracy and security, and require significant infrastructure and high costs for accurate tracking of network-connected devices.
Innovation Solution
An adaptive position location system with a master station and multiple slave stations using cooperative signal processing techniques, allowing for synchronized communication links to provide accurate and secure indoor/outdoor position location and tracking services without the need for extensive site planning, utilizing existing communication infrastructure like WIFI and cellular networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GPS satellite signals are used for position location, then outdoor positioning accuracy can be achieved, but the system becomes vulnerable to jamming and ineffective indoors due to weak signal strength
Solution Approach 1:
The system divides the positioning function into multiple distributed transmitters throughout the service area, each independently providing location references. This segmentation allows the system to operate effectively both outdoors and indoors without relying on distant satellite signals that are vulnerable to jamming.
Solution Approach 2:
The patent introduces local transmitters as intermediary elements between the user device and the positioning system. These transmitters relay positioning signals locally, eliminating the need for weak satellite signals to penetrate buildings and providing immunity to external jamming.
2Measurement precision
If existing position location systems are used, then basic locationing can be achieved, but tracking capabilities and real-time interaction are lacking due to passive system design
Solution Approach 1:
The system combines positioning, tracking, and communication functions into a single integrated platform. The transmitters serve multiple purposes: providing location references for positioning, enabling real-time tracking through continuous communication, and supporting bidirectional interaction between user devices and the system.
Solution Approach 2:
The patent implements bidirectional communication links that provide real-time feedback between user devices and the system. This allows the system to actively track device positions and provide immediate responses, transforming passive positioning into an interactive tracking system.
3Measurement precision
If accurate position location is achieved using existing systems, then locationing accuracy can be obtained, but infrastructure costs and device complexity increase significantly
Solution Approach 1:
The system uses multi-functional transmitters that simultaneously provide positioning references, communication services, and tracking capabilities. This eliminates the need for separate dedicated positioning infrastructure, reducing overall system complexity and cost while maintaining high accuracy.
Solution Approach 2:
The patent merges positioning, communication, and tracking functions into a unified system architecture. By combining these functions, the system avoids the complexity of maintaining separate infrastructure for each function while achieving accurate position location with reduced costs.
4Productivity
If synchronized communication links are implemented, then real-time tracking and interaction are enabled, but system complexity and coordination requirements increase
Solution Approach 1:
The system employs self-synchronization mechanisms where transmitters automatically coordinate their operations through predefined protocols. Each transmitter independently maintains synchronization with the network, eliminating the need for complex centralized coordination while enabling real-time tracking capabilities.
Data Source
AI summary
The present invention is an integrated wireless system with multiple functionalities including robust (indoor/outdoor) position location, mobile receiver tracking and adaptive broadband communication. The present invention may be an adaptive position location system for local and indoor applications with improved accuracy, flexibility and security. The self-calibration technique of the present invention may cause, the position location system to be easily deployed. A master station may communicate with and control two or more slave stations and one or more user devices and thereby determine the position of a user device and track that user device, utilizing location reference sets, in accordance with the location of the master station and communication between the slave stations and the master station. The locationing operation of the present invention may be initiated by the user device.