Position Measurement System Using Dedicated Uplink Signal Receivers
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Solution Overview
Problem
Existing mobile communication systems face challenges in accurately estimating the position of a terminal due to long distances between base stations and limited base station coverage, especially in urban and rural areas, and obstacles can further reduce accuracy.
Innovation Solution
A position measurement system that includes positioning devices obtaining channel configuration information for uplink signals from terminals, measuring signal information, and transmitting it to a position measurement server for accurate position calculation, utilizing multiple positioning devices and combining data from both uplink and downlink signals for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If base stations are spaced far apart to cover large areas, then coverage area is improved, but position estimation accuracy deteriorates
Solution Approach 1:
The patent introduces positioning devices as separate functional units that work in conjunction with base stations. These positioning devices are specifically dedicated to position estimation and can be deployed more densely than base stations, effectively segmenting the coverage function from the measurement function. This allows base stations to maintain large coverage areas while positioning devices provide high-precision local measurements.
Solution Approach 2:
The positioning device acts as an intermediary between the terminal and the base station for position estimation. Instead of relying solely on signals between terminal and base station, the positioning device receives and processes uplink signals from terminals, providing intermediate measurement data that improves overall position estimation accuracy without requiring base stations to be closer together.
2Measurement precision
If multiple base stations are used to improve position estimation accuracy, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system segments the position estimation function into dedicated positioning devices that work with base stations. Rather than requiring all base stations to participate in every position estimation, only relevant positioning devices near the terminal need to measure signals, reducing the effective number of measurement points while maintaining accuracy.
Solution Approach 2:
Positioning devices are designed as multi-functional units that can work with multiple base stations and serve multiple terminals. A single positioning device can assist in position estimation for different terminals and coordinate with different base stations, reducing the total number of devices needed in the system while maintaining high measurement precision.
3Area of stationary object
If signal transmission distance is increased to extend coverage, then coverage area is improved, but measurement precision deteriorates
Solution Approach 1:
The positioning device serves as an intermediary receiver that captures uplink signals from terminals at intermediate distances. By positioning these devices strategically between terminals and base stations, the system reduces the effective transmission distance for measurement purposes while maintaining large coverage areas through base station connectivity.
Solution Approach 2:
The system applies local quality by deploying positioning devices with optimized reception characteristics in specific local areas where position estimation is needed. These devices are tailored for high-precision local signal measurement rather than broad coverage, allowing accurate measurements over shorter distances while the overall system maintains extensive coverage through base station infrastructure.
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
Enables precise location identification of terminals, enhancing the ability to locate missing persons or those in distress by accurately measuring position based on uplink signal reception time, power, and direction, even in challenging environments.
Implementation Method 1
obtaining channel configuration information for an uplink signal of a target terminal from a base station, receiving an uplink signal of the target terminal via one or more uplink signal receivers
Data Source
AI summary
Disclosed is a positioning device, a position measurement server, and a position measurement system capable of estimating a relatively accurate position on the basis of a signal transmitted from a terminal in a mobile communication system. Particularly, the positioning device acquires channel configuration information of an uplink signal of a target terminal, receives the uplink signal of the target terminal through one or more uplink signal reception units on the basis of the channel configuration information, measures information on the received uplink signal, and transmits the information on the uplink signal of the target terminal to the position measurement server, and the position measurement server receives the information on the uplink signal of the target terminal from the positioning device and calculates a position of the target terminal on the basis of the information on the uplink signal of the target terminal.