Indoor multi-terminal positioning system and method based on three-dimensional beams

Abstract

The invention discloses an indoor multi-terminal positioning system and method based on three-dimensional beams, and the system comprises a plurality of indoor access nodes and a plurality of terminals, sets any to-be-positioned terminal in a plurality of terminals in a to-be-positioned environment as a terminal Q1, and the terminal Q1 is a device with a read-write function. The node Tt is a base station around a to-be-positioned environment and at least comprises four nodes T1, T2, T3 and T4 which are not on the same plane; the multi-terminal positioning method comprises the steps that (S100) a node sends information in a three-dimensional sub-beam cluster scanning mode; (S200) the terminal Q1 detects the received signal from the node Tt; and (S300) three-dimensional space position estimation is performed on the terminal Q1 pair. According to the method, good positioning services can be provided for a plurality of terminals at the same time, and the positioning efficiency of an indoor positioning system is improved.

Description

technical field [0001] The invention relates to an indoor multi-terminal positioning method, in particular to an indoor multi-terminal positioning system and positioning method based on three-dimensional beams. Background technique [0002] With the rapid increase of data services and multimedia services, people's demand for positioning is increasing. Especially in complex indoor environments, such as airport halls, supermarkets, libraries, underground parking lots, etc., it is often necessary to determine whether the mobile terminal or its Indoor location information of holders, facilities and objects. Most of the current positioning algorithms are only researched on wireless two-dimensional networks. However, in practical applications, wireless network nodes are often in a three-dimensional environment. In these cases, it is necessary to provide three-dimensional position information of mobile terminals. Researchers have proposed many methods based on Indoor positioning s...

AI Technical Summary

Problems solved by technology

When the base station adopts a uniform linear array structure, the downtilt angle of the beam is fixed, and the beamforming can only be performed in the horizontal two-dimensional plane; it can distinguish users with different horizontal angles, but cannot distinguish between two users with the same horizontal angle and different distances. user

[0005] Chinese patent CN201811108110.4, the title of the invention is: a three-dimensional beam-based indoor multi-user positioning method, which discloses a method for positioning using three-dimensional beam scanning, but this method uses a uniform scanning method based on the area, without considering the scanning area The physical characteristics of the environment, its positioning accuracy is low

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