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Positioning method and device for mobile terminal

A technology of mobile terminal and positioning method, which is applied to measurement devices, shaping networks in transmitters/receivers, instruments, etc., can solve problems such as inaccurate distances between base stations and mobile terminals, inability to establish multiple signal strengths, etc. Precise and improve the effect of positioning accuracy

Active Publication Date: 2011-03-16
南京浦口科创投资集团有限公司
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Problems solved by technology

[0005] However, using the above method to obtain the distance between the base station and the mobile terminal, using the formula method, is too theoretical, and the error caused by signal drift and interference cannot be avoided. Using the database model to find the distance, it is impossible to establish a certain distance in the database. For multiple signal strengths, an average method or other strategies must be used to keep a record, making the distance between the base station and the mobile terminal inaccurate during positioning

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  • Positioning method and device for mobile terminal
  • Positioning method and device for mobile terminal
  • Positioning method and device for mobile terminal

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Embodiment Construction

[0018] An embodiment of the present invention provides a positioning method for a mobile terminal, which uses an artificial neural network model to determine a unified training model for each base station, and collects the cell identification of each base station, the signal strength of each sampling point, and the sampling distance to train the training model. Perform training to obtain a training model that characterizes the mapping relationship among cell identifiers, signal strengths, and sampling distances. In the subsequent positioning of the mobile terminal, the distance between the mobile terminal and the base station can be obtained by multiplying the cell identity and signal strength as input with the forward derivation matrix of the training model. Through this neural network training method, the forward derivation matrix of the training model obtained can reflect the mapping relationship between cell identification, signal strength and distance, and can model the si...

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Abstract

The invention relates to the field of mobile communication and discloses a positioning method and a positioning device for a mobile terminal. The positioning method and the positioning device can improve the accuracy of a distance between the mobile terminal and a base station and improve the positioning precision of the mobile terminal. The method of the invention comprises the following steps of: determining a resident base station of the mobile terminal; and multiplying a cell identifier of the resident base station and the current signal strength by a forward deriving matrix of a training model to obtain the distance between the mobile terminal and the resident base station, wherein after the cell identifier and the signal strength which are used as inputs are multiplied by the forward deriving matrix, an output value is a sampling distance.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a positioning method and device for a mobile terminal. Background technique [0002] In the field of mobile communication, there are usually the following positioning technologies: a base station-based positioning technology, the network side obtains the current base station information (Cell ID) of the mobile terminal to obtain the current location of the mobile terminal, and its accuracy depends on the location of the mobile base station. The distribution and the size of the coverage area; the second is the positioning technology based on AFLT, AFLT (Advanced Forward Link Trilateration) is a unique technology of CDMA, in the positioning operation, the mobile terminal monitors the pilot information of multiple base stations at the same time, using the chip The time delay determines the distance to the nearby base stations, and finally uses the triangulation method to ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00H04L25/03
CPCG01S11/06H04W64/00
Inventor 张晓勇
Owner 南京浦口科创投资集团有限公司
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