Cell-based indoor mobile terminal positioning method

A technology of mobile terminal and positioning method, applied in electrical components, wireless communication and other directions, can solve the problems of wrong positioning, large-span jump, lack of geographic information in positioning results, etc., and achieve the effect of reducing delay and reasonable path.

Inactive Publication Date: 2017-01-25
SUZHOU INST FOR ADVANCED STUDY USTC
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a cell-based indoor mobile terminal positioning method, which solves the lack of geographic information assistance in the mobile terminal positioning results in the prior art when indoor positioning, resulting in the possibility of large-span jumps or even wall penetration, etc. misplaced problem

Method used

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  • Cell-based indoor mobile terminal positioning method
  • Cell-based indoor mobile terminal positioning method
  • Cell-based indoor mobile terminal positioning method

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Experimental program
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Embodiment

[0036] like figure 1 As shown, the Cell-based indoor terminal positioning method mainly includes the following steps:

[0037] Step 1: Collect and filter the signal strength of the terminal as the original input of the algorithm;

[0038] Step 2: First judge the AP quick win. The AP quick win is a mechanism in this positioning algorithm, so that the terminal can quickly locate the AP when it is very close to the AP, without the need to perform sampling point comparison; if there is a If an AP receives the signal strength of the terminal greater than the set threshold, it will be considered as a quick winner, and the location of the AP will be output as the positioning result; otherwise, go to step 3;

[0039] Step 3: Perform the sampling point comparison process, compare the real-time signal strength of the terminal with the sampling results of the sampling points, calculate the Euclidean distance to the sampling results of each sampling point, and select several sampling poi...

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Abstract

The invention discloses an indoor mobile terminal locating method based on a Cell. Geographic space is partitioned, and a sealed polygon is drawn on a map according to the actual terrain to form the Cell corresponding to a room or a similar area in the actual environment. According to a geographic information algorithm provided by the Cell, whether a locating result has large-span jumpiness is judged, then incredible jumpiness is filtered out by means of strict credible conditions, and therefore smoothness of the locating result is achieved; a moving route of the terminal is calculated by means of information of getting in and out points of the Cell, and the through-wall phenomenon caused by straight-line movement is avoided. The method is an effective optimizing method for indoor locating of the terminal.

Description

technical field [0001] The invention belongs to the technical field of indoor positioning, and in particular relates to an indoor terminal positioning optimization method using Cell. 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 Research Ins...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00
Inventor 徐宏力黄刘生孙泽浩
Owner SUZHOU INST FOR ADVANCED STUDY USTC
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