A positioning method for a mobile communication terminal

Abstract

The invention discloses a mobile communication terminal positioning method. Through the steps a., b., c., e. and d., a mobile terminal positioning platform including the longitude and latitude information of base stations, TA values and the distance information is built, and TA values of multiple service cells of a terminal message center are acquired; then, according to the correspondence between the built base station location information, TA values and the distance, circles which take the base stations as the center of the circle and taking the lengths converted by the TA values of different base stations A, B and C are made, and the terminal positioning location is obtained by using the intersection region area of the three circles and a three-circle intersection algorithm. According to the mobile communication terminal positioning method, high-precision mobile communication terminal positioning service can be provided for subscribers of currently popular mobile systems such as CDMA, WCDMA, TD-SCDMA and GSM, with no improvements in subscriber terminals or construction of expanding mobile base stations.

Description

Technical field [0001] The invention relates to the technical field of mobile communication terminal signal receiving and positioning, in particular to a mobile communication terminal positioning method. Background technique [0002] At present, the well-known mobile phone positioning technology is the cell identification code (CellID) positioning technology and the mobile phone GPS positioning technology. The cell identification code (CellID) positioning technology is to determine the position of the mobile phone according to the cell that provides services for the mobile phone, which is obtained by the network side. The current base station Cell (serving cell) information of the user is used to obtain the current position of the user. The accuracy depends on the distribution of the mobile base station and the size of the coverage. The problem is that the accuracy is poor, and the accuracy can vary from several hundred meters to several thousand. Meter, the denser the distr...

AI Technical Summary

Problems solved by technology

[0002] At present, the well-known cell phone positioning technology is cell identification code (CellID) positioning technology and cell phone GPS positioning technology. The cell identification code (CellID) positioning technology is to determine the location of the cell phone according to the cell that provides services for the cell phone, and it is acquired by the network side. The cell (serving cell) information of the user's current base station is used to obtain the user's current location. The accuracy depends on the distribution of the mobile base station and the size of the coverage area. The problem is that the accuracy is poor, and the accuracy difference can range from hundreds of meters to several thousand m, the denser the distribution of mobile base stations, the wider the coverage area, the higher the accuracy of signal reception, that is, the stronger the signal, but the greater the investment in mobile base station construction, the greater the cost of mobile communications; The built-in GPS software can also perform positioning. The current location of the mobile phone can be located by combining the positioning software of the mobile phone with the data of at least 3 GPS positioning satellites received by the GPS. This method has high positioning accuracy, but the disadvantage is that a mobile phone is required. With the GPS positioning function, the manufacturing cost of mobile phones is high, and the GPS positioning satellite signals are easily blocked by buildings, resulting in the inability to receive the required GPS satellite signals in high-rise densely populated areas and other areas.

[0003] In order to overcome GSM (Global System for Mobile Communications), CDMA (Code Division Multiple Access Mobile Communication), TD-SCDMA (Synchronous Code Division Multiple Access System of Time Division Duplex Technology) and WCDMA (Wideband Code Division Multiple ) and other system mobile phone positioning accuracy is not high, mobile phones generally do not have the shortage of GPS positioning function, developed a mobile phone positioning accuracy for mobile phones in mobile communications, and does not need to change the hardware and software of the mobile phone, and does not increase the cost of the mobile phone Communication terminal positioning method is an urgent task in this field

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