Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Indoor wireless hotspot backtrack positioning method based on WiFi signal intensity and Micro-Model

A signal strength and indoor wireless technology, applied in the direction of the beacon system using radio waves, etc., can solve the problems that the gradient positioning method cannot fully meet the secondary positioning, neglect, and unreasonable

Active Publication Date: 2016-11-16
BEIJING UNIV OF TECH
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is obviously unreasonable to simply set the number of cluster centers to a fixed value in this way
[0012] The biggest problem with the gradient positioning method is that some important factors in this field are ignored to varying degrees because the performance of the method is only tested in a specific environment.
Therefore, the gradient positioning method cannot fully meet the needs of secondary positioning, and a new method is needed to complete the positioning

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Indoor wireless hotspot backtrack positioning method based on WiFi signal intensity and Micro-Model
  • Indoor wireless hotspot backtrack positioning method based on WiFi signal intensity and Micro-Model
  • Indoor wireless hotspot backtrack positioning method based on WiFi signal intensity and Micro-Model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention proposes a mobile hotspot backtracking method based on local-LDPL-model (LDPL). The method mainly combines position fingerprint positioning and RSSI positioning, and uses the environment and position information provided by the position fingerprint and the log attenuation model to provide The signal strength-distance conversion formula locates the hot spot. This process includes filtering, clustering and other algorithms, which can achieve better positioning results. The method is divided into two stages, offline training and online testing. (off-line training stage and on-line testing stage)

[0026] S1, offline training stage

[0027] The tasks of the system in the offline training phase are: complete the construction of the MM model; complete the construction of the basic fingerprint library.

[0028] First, the present invention proposes a set of Micro-LDPL-Model (MM) as the core of the method. In the offline training phase, the model systematical...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an indoor wireless hotspot backtrack positioning method based on WiFi signal intensity and a Micro-Model. According to the method, hotspot backtracking is performed on the basis of the conventional trilateral positioning method through accurate description of an environment attenuation factor matrix in a target building so that a mobile hotspot can be positioned in real time. According to the method, an attenuation factor base can be updated in offline training of the conventional position fingerprint algorithm with no requirement for additional positioning steps, and the hotspot backtracking precision can be enhanced. The main working flow of the method is that the conventional fingerprint base is acquired and a Micro-LDPL-Model is established in the offline training phase; and the mobile hotspot is accurately positioned through cooperation of a mobile intelligent terminal and a server in the online measurement phase, and the positioning result is optimized to the greatest extent through the method of accurate backtracking, trilateral measurement and clustering optimization so as to be more accurate and reasonable. The system applying the method has the capacity of performing real-time accurate backtracking on the mobile hotspot and can also limit the positioning error in a small range.

Description

Technical field [0001] The invention relates to a method for backtracking indoor wireless hotspots based on WiFi signal strength collection and accurate environmental attenuation factor model (Micro-Model). This method accurately describes the environment attenuation factor matrix in the target building, and performs hot spot backtracking on the basis of the traditional trilateral positioning method to locate mobile hot spots in real time. This method can update the attenuation factor library during offline training of the traditional location fingerprint algorithm, without additional positioning steps, while improving the accuracy of hotspot backtracking. It belongs to the related field of indoor wireless hotspot backtracking methods based on WiFi signal strength. Background technique [0002] The traditional location fingerprint positioning method has produced a relatively ideal positioning effect after being combined with a variety of new technologies. Its accuracy has been gr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01S1/08
CPCG01S1/08
Inventor 司鹏搏刘硕何余张延华
Owner BEIJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com