A positioning method and device
A positioning method and technology of position coordinates, which are applied in electrical components, wireless communication, etc., can solve the problems of limited number of mobile nodes, increased communication overhead, and difficulty in the operation of positioning machines to transmit position coordinates, so as to achieve low-cost positioning requirements and save communication. effect of overhead
Active Publication Date: 2017-11-07
保定市天河电子技术有限公司
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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
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[0050] 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.
[0051] 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.
[0052] 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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The embodiment of the invention discloses a positioning method and device. The positioning method includes: the first reference node transmits broadcast signals twice at a first time interval, so that the mobile node and the reference node receive the broadcast signals and measure the time of receiving the signals respectively; at least two reference nodes receive the broadcast signals After the signal, delay the respective preset time to transmit respective reference signals, so that the mobile node receives the reference signals and measures the received signal time; the mobile node according to the received signal time measured by itself and the time in the reference signal or time Calculate the distance difference between the mobile node and two reference nodes; the mobile node determines the position coordinates of the mobile node according to at least two distance differences and corresponding reference node position coordinates. Such a technical solution enables the mobile node to complete self-location without being 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...
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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