Wireless local area network technology for indoor positioning

A wireless local area network, indoor positioning technology, applied in the field of wireless local area network, can solve the problem of increasing the difficulty of wireless local area network positioning

Inactive Publication Date: 2014-06-04
江苏智融高科信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

All of these increase the difficulty of wireless local area network indoor positioning

Method used

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  • Wireless local area network technology for indoor positioning

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Embodiment 1

[0022] It works like this:

[0023] 1. Reference point selection

[0024] The reference point refers to the measurement and collection point of the wireless AP signal. In the offline analysis stage, the indoor area is first divided into several grids, and the center of each grid is regarded as the reference point. The size of the grid will directly affect the computational complexity of positioning. and accuracy, the grid can be divided according to the density of indoor obstacles and people, etc. Usually, the more complex the environment, the smaller the grid

[0025] 2. RSS threshold setting

[0026] The triangulation positioning and fingerprint positioning algorithms are applicable to different wireless AP signal environments. The RSS threshold is used to switch between the two algorithms to improve the effectiveness of indoor hybrid positioning. The indoor RSS threshold RSSthres can be calculated according to the indoor signal propagation model and positioning accuracy re...

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Abstract

The invention relates to a wireless local area network, indoor positioning, the information collection and processing technology and the signal strength technology, in particular to the wireless local area network technology for the indoor positioning. The wireless local area network is widely applied to indoor environments and hot spots where people perform activities due to characteristics of high communication speed and simple deployment. Compared with the outdoor positioning, the requirement of the indoor positioning for positioning precision is higher. Furthermore, lots of interference factors such as various walls, partition walls, people or furnishings existing in the indoor space can affect transmission of wireless signals, such as attenuation, reflection, scattering, multipath effect and the like of the wireless signals. The wireless local area network technology for the indoor positioning based on the WIFI seamless positioning technology is used for providing network security of the wireless local area network for enterprise-class users. WIFI can have functions of achieving wireless access and transmitting data and be used for the indoor positioning. On the basis of having no need for additional hardware, the WIFI network can analyze signal strength or signal to noise ratio of a wireless network device to infer the position of a target object.

Description

technical field [0001] The invention relates to a wireless local area network, indoor positioning, information collection and processing technology, and signal strength technology, in particular to a wireless local area network technology for indoor positioning. Background technique [0002] With the continuous expansion and deepening of the application of GPS wireless network technology, mobile communication and pervasive computing technology, services based on perceived location are becoming more and more important. The Global Positioning System is a very successful and mature positioning technology used at this stage, although GPS can provide close to global positioning coverage. However, because GPS cannot sense satellite signals indoors and in densely populated cities, it is impossible to locate. The most common positioning technology used in complex indoor environments is mainly sensor technology. To complete the positioning of objects in the region, typical systems i...

Claims

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Application Information

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IPC IPC(8): H04W64/00G01S5/02
Inventor 徐晓声
Owner 江苏智融高科信息科技有限公司
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