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WiFi positioning system based on probability and support vector machine computation and method thereof

A support vector machine and positioning system technology, applied in the field of WiFi positioning system, can solve the problems of limited application occasions, high cost, not suitable for small spaces, etc., and achieve the effect of saving deployment costs and simple and convenient deployment

Active Publication Date: 2015-03-18
北京优锐科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The conditions for the use of this method are that the WiFi tag device needs to be customized to ensure isomorphism and uniform coverage in the positioning space, and the WiFi tag device maintains a network connection with the server; the disadvantage of this method is that a large-scale deployment of customized WiFi tag devices is required , high cost, only suitable for large spaces but not for small spaces
[0011] It can be seen that the existing WiFi positioning methods have certain requirements for the deployment location, quantity, clock, and equipment cost of APs, and the application occasions are limited.

Method used

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  • WiFi positioning system based on probability and support vector machine computation and method thereof
  • WiFi positioning system based on probability and support vector machine computation and method thereof
  • WiFi positioning system based on probability and support vector machine computation and method thereof

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Embodiment Construction

[0066] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0067] Figure 4 It is a schematic diagram of area division of positioning space in a specific embodiment of the present invention. As shown in the figure, the present invention is applicable to the positioning space covered by the WiFi network. Several APs are arbitrarily deployed in the positioning space, and the positioning space is divided into several positioning areas (ValueO, Valuel...), and the mobile terminal is located in each positioning space. Several APs can be detected in the area and AP information can be collected, including AP unique ID (MAC address), signal strength (RSS), etc. The AP information that the mobile terminal can detect and collect in the positioning area ValueO is shown in Table 1:

[0068]

[0069] Table 1

[0070] Since the same mobile terminal has different signal strengths for multiple identifications o...

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PUM

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Abstract

The invention discloses a WiFi positioning system based on probability and support vector machine computation and a method thereof. Multiple APs are randomly deployed in a positioning space so that the positioning space is divided into multiple positioning areas. The system comprises a data acquisition module, a data processing module and an SVM training module. The data acquisition module acquires positioning area data including positioning area identification, AP unique identification and signal intensity and acquires data to be positioned including AP unique identification and signal intensity. The data processing module processes the positioning area data so that a standard data table is generated. The SVM training module performs training processing with the data in the standard data table acting as an input source, and an SVM training result module is acquired after processing. The data to be positioned are processed by the SVM training result module so that a positioning result is acquired. The APs can be randomly deployed without limitation of aspects of position, number, clock or cost so that applicable occasions are wide.

Description

technical field [0001] The invention relates to a WiFi positioning system and method based on probability and support vector machine calculation, belonging to the technical field of wireless communication. Background technique [0002] As a supplement to GPS positioning technology, WiFi (wireless fidelity) positioning technology has been widely used due to its advantages of fast positioning speed and high precision. Deploying WiFi networks in buildings and densely populated areas, especially indoor spaces, can get good positioning and Network connection effects. [0003] The existing WiFi positioning methods mainly include the following three types: [0004] First, positioning is based on the triangular positional relationship between the mobile terminal and the AP and the detected signal strength. Since the signal strength of the wireless signal attenuates with the increase of the transmission distance, the mobile terminal can estimate the distance between the communicati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00
CPCH04W64/00
Inventor 丁贵金朱韬
Owner 北京优锐科技有限公司
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