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Location method and device

A positioning method and position information technology, applied in electrical components, wireless communication, etc., can solve serious problems such as large TOA and TDOA positioning errors, and achieve the effect of improving positioning accuracy and simple implementation methods

Active Publication Date: 2013-07-24
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, due to the serious NLOS (Non Line of Sight, non-line-of-sight) propagation of signals in cities, the positioning errors of TOA and TDOA are relatively large, especially in areas with dense buildings, NLOS is more serious, resulting in positioning errors that may reach hundreds of More than meters

Method used

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  • Location method and device
  • Location method and device

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Experimental program
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Effect test

Embodiment 1

[0040] see figure 1 , a positioning method, the execution subject of the positioning method may be a user equipment or a base station, etc., which is not specifically limited in the present invention. include:

[0041] Step 101: Calculating the pseudo-ranges between the user equipment and multiple reachable base stations respectively;

[0042] Step 102: Calculate and obtain the location information of the user equipment according to the pseudorange and the location information of multiple reachable base stations;

[0043] Step 103: In the preset area and the mapping table of non-line-of-sight values ​​in the area, search for the corresponding non-line-of-sight value in the area where the location information is located, and correct the pseudo-range according to the non-line-of-sight value to obtain For the corrected pseudorange, return to step 102 until the predetermined number of corrections is reached;

[0044] The beneficial effect brought by the technical solution provi...

Embodiment 2

[0093] see image 3 , a positioning device, the device specifically corresponds to the user equipment or the base station in the method embodiment, which is not specifically limited in the present invention. Including: a first calculation module 301, a second calculation module 302 and a search and correction module 303;

[0094] The first calculation module 301 is configured to separately calculate pseudo-ranges between the user equipment and multiple reachable base stations;

[0095] The second calculation module 302 is configured to calculate the location information of the user equipment according to the pseudorange calculated in the first calculation module 301 and the location information of multiple signal-reachable base stations;

[0096]The search correction module 303 is used to search the preset area and the mapping table of non-line-of-sight values ​​in the area to obtain the corresponding non-line-of-sight value in the area where the position information calculat...

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Abstract

The invention discloses a location method and a location device, and belongs to the technical field of location. The method comprises the following steps of: A, calculating pseudo distances between user equipment and a plurality of signal reachable base stations respectively; B, calculating according to the pseudo distances and the position information of the plurality of signal reachable base stations to obtain position information of the user equipment; and C, finding a corresponding non-line-of-sight value in an area where the position information is positioned in the preset area and a mapping table of the non-line-of-sight value within the area, correcting the pseudo distances according to the non-line-of-sight value to obtain the corrected pseudo distances, and returning to step B until a predetermined correction frequency is achieved. By the invention, the position information obtained through location is corrected circularly according to the found non-line-of-sight value, so that the location precision of the user equipment is greatly improved, and the implementation method is simple and efficient.

Description

technical field [0001] The present invention relates to the technical field of positioning, in particular to a positioning method and device. Background technique [0002] With the rapid development of social economy, the range of people's activities is getting wider and wider, and "location information" has become more and more important information in people's lives. For example, when people come to an unfamiliar environment, they need location information to provide them with navigation; When an emergency occurs, rescuers also need the location information of the person being assisted to rush to the scene for assistance. [0003] At present, the CELL (cell)-ID positioning technology is widely used in various mobile networks, and its principle is to determine the location of the target user equipment by obtaining the cell ID of the target user equipment. If the cell is an omnidirectional cell, the location of the user equipment is centered on the serving base station, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00
Inventor 邓中亮余彦培关维国袁协徐连明刘雯
Owner BEIJING UNIV OF POSTS & TELECOMM