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Positioning method and device

A technology of three-dimensional position and distribution variance, applied in the field of wireless communication, can solve the problem of high degree of dependence on the number of base stations, and achieve the effect of reducing the degree of dependence, short wavelength, and easy to distinguish

Active Publication Date: 2018-12-25
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although the positioning of the mobile terminal can be achieved by applying the above method, if the number of base stations communicating with the mobile terminal is less than three, the positioning of the mobile terminal cannot be realized by the above method
[0005] It can be seen that when positioning a mobile terminal in the prior art, it depends heavily on the number of base stations communicating with the mobile terminal

Method used

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] The embodiment of the present invention provides a positioning method and device, and the concepts involved in the embodiment of the present invention will be described below.

[0037] The distribution variance matrix is ​​the matrix that characterizes the probability distribution of vector estimates.

[0038] Millimeter waves are electromagnetic waves with a frequency of 30-300 GHz. Compared with the microwaves currently mainly used, the advantages of ...

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Abstract

The invention embodiment provides a positioning method and a device, and relates to the technical field of wireless communication. The method comprising the following steps of: obtaining a state vector of a mobile terminal at a first moment as a first state vector; obtaining a distribution variance matrix at the first moment as a first distribution variance matrix; obtaining the arrival time of the millimeter wave communication signal received by the mobile terminal on the multi-communication path; and positioning, based on the first state vector, the first distribution variance matrix and thearrival time, the three-dimensional position of the mobile terminal at the current moment by adopting an extended Kalman filtering algorithm. The dependence degree to the number of base stations communicating with the mobile terminal can be reduced when the mobile terminal is positioned by adopting the scheme provided by the embodiment of the invention.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a positioning method and device. Background technique [0002] With the growth of economy and the development of science and technology, the status of location information has become increasingly prominent. The positioning function has been promoted as an important new development direction of the mobile communication system, which will give birth to a large number of services and applications based on location information, thereby bringing convenience to the life and work of mobile communication users. [0003] In the prior art, when locating a mobile terminal in a mobile communication system, the distance between the mobile terminal and three or more base stations is generally obtained to realize the positioning of the mobile terminal. [0004] Although the mobile terminal can be positioned using the above method, if the number of base stations communicating wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S11/02G01S11/04
CPCG01S11/02G01S11/04
Inventor 田辉范绍帅贾杨聂高峰
Owner BEIJING UNIV OF POSTS & TELECOMM