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A Method of Improving Base Station Positioning Accuracy

A base station positioning and base station technology, which is applied in the directions of location-based services, wireless communications, electrical components, etc., can solve problems affecting positioning accuracy, measurement data errors, etc., and achieve the effect of improving positioning accuracy.

Inactive Publication Date: 2019-12-27
崔兆琦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the data measurement, due to the occlusion, reflection and loss of the signal by buildings, etc., the measurement data has a large error, which seriously affects the positioning accuracy.

Method used

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  • A Method of Improving Base Station Positioning Accuracy
  • A Method of Improving Base Station Positioning Accuracy
  • A Method of Improving Base Station Positioning Accuracy

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Experimental program
Comparison scheme
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Embodiment Construction

[0046] Assuming that the mobile terminal can receive signals from 10 base stations (the coordinates of which are shown in Table 1), the measured data through the signal transmission between the mobile terminal and the base stations can be calculated to obtain the measurement distance between the mobile terminal and the 10 base stations, as shown in Table 2 Show.

[0047] Table 1 Location coordinates of each base station

[0048] base station number x-coordinate (m) y-coordinate (m) z-coordinate (m) 1 176.4 193.11 3.28 2 268.95 180.5 4.62 3 67.49 141.23 2.02 4 185.29 108.62 4.04 5 63.26 -32.11 2.56 6 176.09 -278.8 3.57 7 246.8 -136.2 3.59 8 -99.6 -210.37 2.25 9 283.82 175.5 2.79 10 -42.68 -36.21 3.21

[0049] Table 2 Measurement distance from the mobile terminal to each base station

[0050]

[0051]

[0052] Step 1. According to the error correction model (above-mentioned formula (1)...

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Abstract

The invention discloses a calculation method for effectively processing measurement data errors and improving base station positioning accuracy. The method comprises the following steps: (1) according to the measured distance between the mobile terminal and different base stations (using the mobile terminal to measure the signals of different base stations to obtain the arrival time or the arrival time difference of different base station signals so as to obtain the measured distance between the mobile terminal and the base station), and using the measurement data correction model to obtain the corrected distance; (2) introducing the corrected distance into the location calculation model to get the least square solution of the coordinates of the mobile terminal, so as to calculate and obtain the location calculation distance of the mobile terminal; (3) establishing the standard difference F between the location calculation distance and the corrected distance, wherein the F min is taken as the optimization objective, and using the genetic algorithm to get the optimal solution of the error parameters a and b in the measurement data correction model; and (4) placing the optimal solutions of a and b into the location calculation model based on the optimal solutions of a and b, so as to obtain the optimal position coordinates of the mobile terminal.

Description

technical field [0001] The invention relates to a method for effectively processing measurement data errors and improving positioning accuracy when using a base station for positioning in the field of mobile communication networks. Background technique [0002] Currently, relatively mature wireless positioning technologies mainly include: GPS (Global Positioning System, Global Positioning System) positioning, WiFi (Wireless Fidelity, Wireless Fidelity) positioning, base station positioning, Bluetooth positioning, infrared positioning, etc. These positioning technologies are used more and more widely in the commercial field and people's daily life. With the development of science and technology, base stations are more suitable for indoor positioning than satellites for outdoor precise positioning. [0003] The principle of base station positioning is to use the mobile terminal to measure the signals of different base stations to obtain the time of arrival (TOA, Time of Arriv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W24/06H04W64/00
CPCH04W4/023H04W24/06H04W64/00
Inventor 崔兆琦
Owner 崔兆琦