Base station location method based on AT instructions in GSM network

A GSM network and base station positioning technology, which is applied in the field of base station positioning under the GSM network based on AT commands, can solve the problems of large error and limited application, and achieve the effect of simple operation and wide application

Inactive Publication Date: 2015-05-06
DALIAN ROILAND SCI & TECH CO LTD
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AI Technical Summary

Problems solved by technology

At present, some use the energy attenuation model to calculate the distance, but due to the multipath effect and environmental factors, the error is large; some calculate the distance based on time arrival, but the specific application is limited by the hardware equipment

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  • Base station location method based on AT instructions in GSM network

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Embodiment Construction

[0023] Step 1: Obtain the cell information through the AT command AT+CCED=0, 2, 0 in the command means only query once, 2 means the information of the attached cell, and query the latitude and longitude position coordinates of n base stations in the cell;

[0024] At present, in the Spreadtrum 6531 module, generally three to four base station information can be obtained, and information of up to six base stations can be obtained;

[0025] Step 2: Obtain the timing advance of the cell through the command AT+CCED=1, 4. In the command, 1 indicates the automatic query command, and 4 indicates the timing advance TA of each base station;

[0026] The time-division structure adopted by the GSM network requires that each user must correspond to the corresponding time slot, but the propagation of electromagnetic waves requires a certain delay, so it is necessary to transmit a certain time in advance, that is, the time advance amount TA;

[0027] Step 3: According to the formula Calcu...

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Abstract

The invention provides a base station location method based on AT instructions in a GSM network. The base station location method is not limited by hardware and relatively small in location error, and comprises the steps of obtaining cell information and inquiring the longitude and latitude position coordinates of n base stations by use of the AT instructions, obtaining the time advance TA of each base station by use of the AT instructions, calculating the distance r of each base station according to a formula as shown in the description, in unit Km, taking the base station having the shortest distance as the origin of coordinates, and converting the longitude and latitude coordinates of each base station into base station plane coordinates xn and yn according to the following formula, namely setting the equipment plane coordinates as x and y, constructing n equations according to the formula as shown in the description and solving x and y, and then converting the equipment plane coordinates as x and y into the longitude and latitude coordinates.

Description

technical field [0001] The invention relates to a device positioning method, in particular to a base station positioning method under the GSM network based on AT commands, which is not limited by hardware and has relatively small positioning errors. Background technique [0002] In the base station positioning process, it is necessary to calculate the distance between the device and the base station. At present, some use the energy attenuation model to calculate the distance, but due to the multipath effect and environmental factors, the error is large; some calculate the distance based on the arrival time, but the specific application is limited by the hardware equipment. Contents of the invention [0003] The present invention aims to solve the above-mentioned technical problems existing in the prior art, and provides a base station positioning method under the GSM network based on AT commands that is not limited by hardware and has relatively small positioning errors. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00
CPCH04W64/00
Inventor 田雨农张晓伟苍柏
Owner DALIAN ROILAND SCI & TECH CO LTD
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