Terminal Positioning Using Intermediary Reference Nodes
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Solution Overview
Problem
Current mobile communication positioning technologies face challenges in achieving high accuracy, especially in indoor environments where satellite positioning is unreliable and base station positioning lacks precision.
Innovation Solution
A method that utilizes higher-accuracy second terminals to improve the positioning of a first terminal with lower accuracy by calculating its position based on distance measurements between the first terminal and the second terminals, employing triangulation with pre-stored terminal and base station information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If base station positioning is used for indoor positioning, then positioning can be performed indoors, but positioning accuracy is very low
Solution Approach 1:
The patent combines base station positioning with terminal-to-terminal distance measurement to create a hybrid positioning system. The positioning center integrates location data from base stations with distance measurements from multiple second terminals to calculate the first terminal's position, thereby improving accuracy while maintaining indoor capability
Solution Approach 2:
The patent introduces second terminals as intermediary elements that assist in positioning the first terminal. These second terminals measure distances to the first terminal and provide measurement results to the positioning center, which uses them as intermediate data to calculate the final position with higher accuracy
2Measurement precision
If satellite positioning is used, then positioning accuracy is high and geographical coverage is wide, but indoor positioning cannot be performed
Solution Approach 1:
The patent uses second terminals with high positioning accuracy (potentially using satellite positioning when available) as intermediaries to assist the first terminal in indoor environments. The second terminals act as reference points that bridge the gap between satellite-based accuracy and indoor accessibility
Solution Approach 2:
The patent performs preliminary positioning of second terminals using high-accuracy methods (such as satellite positioning) before they are needed to assist the first terminal. This preliminary action ensures that the reference points are accurately positioned even before the first terminal requires indoor positioning assistance
Data Source
AI summary
Provided are a positioning method, device, positioning center, terminal and computer storage medium. The method includes, when receiving a positioning request message requesting to position a first terminal carrying a first terminal identifier of the first terminal, calculating an original position range of the first terminal according to first correspondence relationship between a pre-stored terminal identifier and base station information of a base station in which the terminal is currently located; acquiring second position information of at least three second terminals, whose positioning accuracy is higher than that of the first terminal, within a target position range determined according to the original position range of the first terminal and a preset regional radius; acquiring measurement result of distances measured by the first terminal from the second terminals according to the first terminal identifier; and calculating first position information of the first terminal according to second position information and measurement result.