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Matching location method and mobile terminal

A mobile terminal and matching technology, applied in the field of matching positioning, can solve the problems of reducing positioning reliability and accuracy, etc.

Active Publication Date: 2012-09-26
BEIJING UNIV OF POSTS & TELECOMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the process of realizing the present invention, the inventor found that the prior art has at least the following problems: only TDOA is used for matching, which reduces the reliability and accuracy of positioning

Method used

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  • Matching location method and mobile terminal
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  • Matching location method and mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] see figure 1 , this embodiment provides a method for matching positioning, including:

[0086] Step 101: The mobile terminal obtains N time difference of arrival TDOA values ​​of the current location, and obtains area information of the current location, where N is a natural number greater than or equal to 2;

[0087] Step 102: The mobile terminal sets a corresponding weight for each of the N TDOA values ​​according to the signal quality;

[0088] Step 103: The mobile terminal searches the pre-stored benchmarking point information for L benchmarking points identical to the area information of the current location, where L is a natural number greater than or equal to 1;

[0089] Step 104: The mobile terminal calculates the Euclidean distance between the current position and each of the L comparison points according to the N TDOA values ​​and corresponding weights, and obtains L Euclidean distances;

[0090] Step 105: The mobile terminal selects a benchmarking point fro...

Embodiment 2

[0094] see figure 2 , this embodiment provides a method for matching positioning, including:

[0095] Step 201: The mobile terminal obtains N time difference TDOA values ​​of the current location, and obtains area information of the current location, where N is a natural number greater than or equal to 2;

[0096] TDOA (Time Difference of Arrival) is a wireless positioning technology. It determines the position of the mobile terminal by detecting the time difference between the arrival of the signal at the two base stations. The TDOA value is the time difference between the arrival of the two base stations. The receiving situation is used to determine the number of TDOA values. For example, if the mobile terminal can receive signals from 4 base stations at the current location, the mobile terminal obtains 6 TDOA values.

[0097] The area information of the current location refers to the area range of the current location, including information such as floors and building nu...

Embodiment 3

[0116] see image 3 , this embodiment also provides a method for matching positioning, including:

[0117] Steps 301-304: are the same as steps 201-204 in Embodiment 2, and will not be repeated here;

[0118] Step 305: The mobile terminal judges whether this is the first positioning, if it is the first positioning, then execute step 306, if it is not the first positioning, then execute step 307;

[0119] Step 306: The mobile terminal selects the smallest Euclidean distance from the L Euclidean distances, and selects a comparison point corresponding to the smallest Euclidean distance from the L comparison points, and then performs step 310;

[0120] Step 307: The mobile terminal selects the first L1 Euclidean distances from the L Euclidean distances in ascending order of Euclidean distances, and obtains corresponding L1 comparison points, L1≤L;

[0121] Step 308: The mobile terminal calculates the physical distance between the location information of the last location and eac...

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Abstract

The invention discloses a matching location method and a mobile terminal, and belongs to the field of matching positioning. The method comprises the steps as follows: the mobile terminal sets a corresponding weight value for each of acquired TDOA (Time Difference of Arrival) values according to the quality of a signal; L standard preparation points the same as region information are searched in pre-stored standard preparation point information; a Euclidean distances between the current position and each of the standard preparation points are computed to obtain L Euclidean distances; one standard preparation point is selected from the L standard preparation points; the position information of the selected standard preparation point is taken as the current position information of mobile terminal, or the current position information of the mobile terminal is computed according to the characteristic grid of the ranged in which the standard preparation point located. The mobile terminal consists of an acquisition module, a weight value setting module, a standard preparation point filtering module, a Euclidean distance computing module, a standard preparation point selecting module and a positioning module. The method and the terminal improve the reliability and the accuracy of the positioning of the mobile terminal.

Description

technical field [0001] The invention relates to the field of matching and positioning, in particular to a matching and positioning method and a mobile terminal. Background technique [0002] With the rapid increase of data services and multimedia services, people's demand for positioning and navigation is increasing, especially in complex indoor environments, such as airport halls, exhibition halls, warehouses, supermarkets, libraries, underground parking lots, mines, etc. , it is often necessary to determine the location information of the mobile terminal or its holder, facilities and objects indoors. [0003] In the current various positioning systems based on mobile communication networks, the basic positioning principles adopted are roughly similar. They all detect the characteristic parameters of the signal transmitted between the mobile terminal and multiple fixed-position transceivers, such as the field strength of radio waves, TOA (Time of Arrival, propagation time)...

Claims

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Application Information

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IPC IPC(8): H04W64/00
Inventor 邓中亮余彦培王佳曹佳雯尹会明谢飞鹏
Owner BEIJING UNIV OF POSTS & TELECOMM
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