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Positioning method and device based on LTE system

A positioning method and position information technology, applied in the field of communication, can solve problems such as high-precision indoor positioning of terminals that cannot be located

Inactive Publication Date: 2015-02-25
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a positioning method and device based on the LTE system, which solves the problem in the prior art that the terminal to be positioned cannot perform high-precision indoor positioning

Method used

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  • Positioning method and device based on LTE system
  • Positioning method and device based on LTE system
  • Positioning method and device based on LTE system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiments of the present invention provide a positioning method based on the LTE system, such as figure 2 shown, including:

[0053] 101. The location calculation device acquires an SRS signal received by M antenna points and sent by a first terminal, where the first terminal is any one of N terminals within the coverage of the M antenna points.

[0054] 102. The position calculation device respectively converts the SRS signals received by the M antenna points into M digital signals.

[0055] 103. The location calculation device determines the time when the SRS signals sent by the first terminal respectively arrive at the M antenna points according to the M digital signals and the preset ZC code information of the N terminals.

[0056] 104. The location calculation device calculates the location information of the first terminal by using the TDOA technology according to the time when the SRS signals sent by the first terminal respectively arrive at the M antenna poi...

Embodiment 2

[0071] Embodiments of the present invention provide a positioning method based on the LTE system, such as image 3 shown, including:

[0072] 201. The location calculation device acquires user information of N terminals, where the user information at least includes ZC code information of the N terminals.

[0073] 202. The location calculation device acquires M antenna points to receive an SRS signal sent by a first terminal, where the first terminal is any one of N terminals within the coverage of the M antenna points.

[0074] 203. The location calculation device respectively converts the SRS signals received by the M antenna points into M digital signals.

[0075] 204. The location calculation device determines the time when the SRS signals sent by the first terminal respectively arrive at the M antenna points according to the M digital signals and the preset ZC code information of the N terminals in the cell.

[0076] 205. The location calculation device calculates the lo...

Embodiment 3

[0095] Such as Figure 5 As shown, a hardware schematic diagram of a position calculation device is provided for an embodiment of the present invention.

[0096] The shown location calculation unit (location calculation unit, LCU) is connected to M antenna points in the distribution system through a dedicated feeder. The location calculation device receives the SRS signal of the terminal through the M antenna points, and extracts the information of the same terminal between different antenna points. At the time point of receiving the SRS signal, calculate the time difference of receiving the SRS signal at different antenna points, so as to calculate the location information of the first terminal using TDOA.

[0097] Such as Figure 5 , the position calculation device includes a processor 11 , a transceiver 12 , a memory 13 , a sampling filter 14 and a bus 15 .

[0098] Wherein, the processor 11 , the transceiver 12 , the memory 13 and the sampling filter 14 are communicative...

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Abstract

The embodiment of the invention provides a positioning method and device based on an LTE system and relates to the communication field. The positioning method and device solve the problem that high-precision indoor positioning cannot be conducted on a terminal to be positioned in the prior art. According to the scheme, the method includes the step of obtaining sounding reference signals (SRSs) sent by a first terminal and received by M antenna points, wherein the first terminal is any one of N terminals within the coverage area of the M antenna points, the step of converting the SRSs received by the M antenna points into M digital signals, the step of determining times when the SRSs sent by the first terminal arrive at the M antenna points according to the M digital signals and preset ZC information of the N terminals, and the step of adopting the TDOA technology to calculate position information of the first terminal according to the times when the SRSs sent by the first terminal arrive at the M antenna points.

Description

technical field [0001] The present invention relates to the communication field, in particular to a positioning method and device based on an LTE (Long Term Evolution, long term evolution) system. Background technique [0002] At present, in the LTE system, the positioning method for the user terminal in the indoor scene mainly uses the TDOA (Time difference of Arrival, based on the time difference of arrival) technology. TDOA technology is a wireless positioning technology. It can determine the location information of the terminal to be located by the time when the measurement signal sent by the terminal to be located arrives at the base station. The specific calculation formula is as follows: [0003] ( x - x 1 ) 2 + ( y - ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/04H04W64/00
CPCH04W4/04H04W64/003
Inventor 王友祥刘华平刘琪徐薇马玥马红兵陈国利
Owner CHINA UNITED NETWORK COMM GRP CO LTD