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Positioning method and device

A positioning method and position coordinate technology, applied in electrical components, wireless communication, etc., can solve problems such as the limitation of the number of mobile nodes, the difficulty of transmitting position coordinates by positioning machines, and the increase in communication overhead.

Active Publication Date: 2014-09-10
保定市天河电子技术有限公司
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AI Technical Summary

Problems solved by technology

Since the central computer transmits the location coordinates to the mobile node, the operation of the mobile node to receive the location coordinates will inevitably increase the communication overhead. It is difficult to realize the operation of machine transmission position coordinates
Furthermore, since both positioning methods require mobile nodes to transmit signals, the number of mobile nodes that can be accommodated in the same area will be limited

Method used

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Embodiment Construction

[0052] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementation manners.

[0053] In order to describe the embodiment of the present invention more clearly, the application scenario of the technical solution of the present invention is briefly introduced first.

[0054] In the existing wired network or wireless network, mobile devices and devices (such as mobile phones, sensors, mobile stations, etc.) are called mobile nodes, and non-moving devices and devices (such as base stations) are called It is a reference node (also known as a fixed reference node); the mobile node cannot complete positioning alone, and generally, the mobile node needs to use other positioning devices to determine its specific position coordinates; and the reference node itself has a global positioning sys...

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Abstract

The embodiment of the invention discloses a positioning method and device. The positioning method includes the steps that a first reference node transmits broadcast signals two times at the interval of first time so that a mobile node and reference nodes can receive the broadcast signals and respectively measure the signal receiving time; after at least two reference nodes receive the broadcast signals, the reference nodes transmit respective reference signals after delaying respective preset time so that the mobile node can receive the reference signals and measure the signal receiving time; the mobile node calculates the difference between the distances from the mobile node to the two reference nodes according to the signal receiving time and the time or the time interval in the reference signals measured by the mobile node; the position coordinates of the mobile node are determined by the mobile node according to at least two distance differences and corresponding position coordinates of the reference nodes. Through the technical scheme, the mobile node can be self-positioned, and positioning is not limited by the number of mobile nodes.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a positioning method and device. Background technique [0002] With the development of communication technology, people pay more and more attention to positioning technology. At present, the commonly used positioning technologies include time-of-arrival positioning and time-difference-of-arrival positioning. [0003] The basic principle of the Time of Advent (TOA) positioning method is: first measure the signal propagation time between at least three reference nodes and the mobile node; then calculate the distance between the mobile node and the reference node; finally, according to The position coordinates of the mobile node are determined by the position of each reference node and the calculated distance. [0004] The basic principle of the positioning method based on Time Difference of Arrival (TDOA) is: the mobile node transmits a signal, and at least three refe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00
Inventor 韦子辉王志峰申书伟
Owner 保定市天河电子技术有限公司
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