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Indoor positioning method and device based on Wi-Fi hot spots

A technology for indoor positioning and hotspots, applied in location-based services, measuring devices, instruments, etc.

Inactive Publication Date: 2017-12-26
CHIGOO SHANGHAI INTERACTIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although KNN is simple to implement, simply using a fixed K value that is generally determined by cross-validation or pre-ergodic statistics may not be the best for all test sample points (that is, targets to be located at all positions in the room). excellent choice

Method used

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  • Indoor positioning method and device based on Wi-Fi hot spots

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Embodiment Construction

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0051] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0052] The invention may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program mo...

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Abstract

The invention discloses an indoor positioning method based on Wi-Fi hot spots. The method includes: building a fingerprint database; determining multiple target reference sample points from multiple reference sample points according to the received signal strength, from each Wi-Fi hot spot, at each reference sample point in the fingerprint database and the received signal strength, from multiple Wi-Fi hot spots, at the to be positioned target, wherein the distance between the target reference sample points and the to be positioned target is in a preset range; determining the positions of the target reference sample points according to the fingerprint database so as to determine the position of the to-be-positioned target. Due to the fact that the multiple target reference sample points are determined during positioning in real time and the distance between the target reference sample points and the to-be-positioned target is in the preset range, the acquired target reference sample points are suitable for the positioning of the to-be-positioned target at a current position, introduction of reference sample points with large deviation due to the fact a fixed k value is used is avoided, and the position of the to-be-positioned target can be estimated accurately.

Description

technical field [0001] The present invention relates to indoor positioning technology, in particular to an indoor positioning method and device based on Wi-Fi hotspots. Background technique [0002] With the explosive growth of the number of mobile phones and the development of the mobile Internet, the requirements for providing accurate location-based services (Location Based Service: LBS) in indoor environments such as large supermarkets, offices, and airports are becoming more and more intense. In an open outdoor environment, the Global Positioning System (Global Positioning System: GPS) and the cellular network positioning system can provide positioning information that meets various precision requirements. However, due to the severe signal attenuation caused by the indoor environment building layout, GPS positioning is very unreliable. Based on this, positioning methods of wireless signals including Wi-Fi, Bluetooth, RFID and Ultra-Wideband (UWB) have been extensively ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W64/00G01S11/06
CPCG01S11/06H04W4/023H04W64/003
Inventor 王新珩王亚涛吴树坤陈涛
Owner CHIGOO SHANGHAI INTERACTIVE TECH CO LTD
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