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Method and device for selecting visible base station as well as method and device for locating terminal

A technology for base stations and terminals, applied in the field of terminal positioning methods and devices based on visible base stations, can solve problems such as low positioning accuracy, achieve high positioning accuracy, and solve the effects of low positioning accuracy

Active Publication Date: 2011-06-29
CHINA MOBILE COMM GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a method and device for selecting a visible base station, which is used to solve the problem that when the base station selected by the visible base station selection method provided by the prior art is used to locate the terminal, the positioning accuracy obtained is often low.

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  • Method and device for selecting visible base station as well as method and device for locating terminal
  • Method and device for selecting visible base station as well as method and device for locating terminal
  • Method and device for selecting visible base station as well as method and device for locating terminal

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Embodiment Construction

[0032] The embodiment of the present invention is based on the "minimum correlation interference principle" between wireless signals of visible base stations, and selects target visible base stations by measuring and optimizing the correlation between wireless signals sent by two visible base stations among all visible base stations of the terminal. Since the correlation between the wireless signals sent by the visible base stations in the selected visible base station set is small, the selected visible base stations are more suitable for subsequent triangulation and positioning calculations, and can obtain higher Positioning accuracy, which helps to solve the problem of relatively large cross-correlation interference between target visible base stations obtained by the visible base station selection method based on the principle of maximum signal strength in the prior art, and leads to low positioning accuracy.

[0033] The main realization principles, specific implementation ...

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Abstract

The invention discloses a method and device for selecting a visible base station, and the method and device provided by the invention are used for solving the problem that the location precise is low when the base station selected by using a visible base station selecting method which is provided by the prior art locates a terminal. The method for selecting the visible base station disclosed by the invention comprises the following steps: respectively determining statistical parameter values of wireless signals sent by various base stations according to the signal strength of the wireless signals which are sent by various visible base stations and received by a terminal to be located and a statistical probability distribution rule to which the wireless signals are amenable; according to the statistical parameter values, determining relativity values among the wireless signals sent by different visible base stations; and according to the determined relativity values, selecting the visible base station, by which the relativity values of the wireless signals sent are less than a predetermined relativity threshold value, from the visible base stations. The invention also discloses a method and device for locating a terminal based on the visible base station.

Description

technical field [0001] The present invention relates to the field of computer and communication technologies, in particular to a method and device for selecting a visible base station, and a terminal positioning method and device based on a visible base station. Background technique [0002] At present, the propagation model positioning technology based on the relationship between wireless signal strength attenuation and propagation path distance is a hotspot in the current wireless network positioning technology, especially the triangulation-based positioning technology. The main principle of the propagation model positioning technology is to record the attenuation degree of the wireless signal strength when the wireless signals sent by several (three or more) visible base stations arrive at the terminal to be positioned (for a certain terminal, the signal received by the terminal The base station corresponding to the wireless signal is the "visible base station" of the ter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00
Inventor 阎啸天温亮生贺赢
Owner CHINA MOBILE COMM GRP CO LTD
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