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Indoor Terminal Positioning Method Based on Virtual Sampling Points

A technology of virtual sampling point and positioning method, which is applied in the direction of electrical components, wireless communication, network topology, etc., can solve problems such as easy to generate large-scale jumps, inconvenient field sampling, sensitive to changes in real-time signal values, etc., to achieve convenient modification and the effect of reconfiguration

Inactive Publication Date: 2018-02-09
SUZHOU INST FOR ADVANCED STUDY USTC
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  • Application Information

AI Technical Summary

Problems solved by technology

Again, the sampling positioning algorithm is sensitive to the numerical changes of the real-time signal, and is prone to large-scale jumps
The beating or missing of a certain AP data of the real-time signal will cause a large-scale beating of the positioning result, and the lack of geographic information will cause a very bad visual experience.
Fourth, there may be some places in the display environment, and it is not very convenient to conduct field sampling

Method used

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  • Indoor Terminal Positioning Method Based on Virtual Sampling Points
  • Indoor Terminal Positioning Method Based on Virtual Sampling Points

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Embodiment

[0039] An indoor terminal positioning method based on virtual sampling points, in which the virtual sampling points are the map information configured in the previous stage, and the virtual sampling points represent the location of the real environment, and also carry the signal strength information of the location in the WIFI environment, and the connection with the surrounding APs. Neighbor relationship information between (wireless access points). The virtual sampling points are defined when configuring the environment map, and replace the sampling points in the sampling-based indoor positioning method as the reference point for positioning. Through relatively simple configuration instead of heavy sampling, a more intuitive indoor environment WIFI signal strength distribution can be obtained, and it can be applied to indoor terminal positioning.

[0040] The steps to configure a virtual sample point include:

[0041] Step 1: Configure the AP in the real environment, which ...

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Abstract

The invention discloses an indoor terminal positioning method based on virtual sampling points. The indoor terminal positioning method comprises the following steps: collecting and filtering signal strength of a terminal; judging which AP (access point) wins fast to realize fast positioning of the AP when the terminal is very close to the AP, wherein if a certain AP receives the signal strength of the terminal, which is larger than a set threshold value, the AP is considered to win fast, and then outputting the position of the AP as a positioning result; executing the similarity matching process of the virtual sampling points, and selecting the sampling point as the positioning result if a certain virtual sampling point wins; executing weight matching of the virtual sampling points, and selecting the sampling point as the positioning result if a certain virtual sampling point wins; and otherwise, keeping the position of terminal unchanged. The logic relation between the position in an actual environment and the AP in a WIFI (wireless fidelity) environment is in correspondence through the virtual sampling points, and the virtual sampling points are used as positioning datum points for indoor positioning, thereby avoiding the sampling work for sampling positioning and improving the capability of responding to the changes in the environment.

Description

technical field [0001] The invention belongs to the technical field of indoor positioning, and in particular relates to an indoor terminal positioning method based on virtual sampling points. Background technique [0002] Indoor positioning refers to the realization of position positioning in the indoor environment. It mainly adopts wireless communication, base station positioning, inertial navigation positioning and other technologies to form an indoor position positioning system, so as to realize the position monitoring of people and objects in the indoor space. Indoor positioning technology is mainly divided into two service providers, base station positioning and inertial navigation positioning. Base station positioning service providers mainly include: Google, Nokia, TI, Apple, AutoNavi, Baidu, etc. that use WIFI positioning; inertial navigation positioning service providers mainly include: NAVISEER in the United States, Longcheer Ruipu Technology, and Shanghai Fire Res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00
CPCH04W64/00H04W64/006H04W84/12
Inventor 黄刘生朱振宇孙泽浩徐宏力江梓豪
Owner SUZHOU INST FOR ADVANCED STUDY USTC
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