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Multi-base station frequency shift integrated positioning method for mobile terminals

A mobile terminal and positioning method technology, applied in wireless communication, electrical components, etc., can solve the problems of inability to accurately know the precise position, low positioning accuracy, and high system implementation cost, and achieve a scientific and reasonable positioning method, accurate position, and positional Effect

Inactive Publication Date: 2011-12-21
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Abstract
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Problems solved by technology

[0002] As we all know, the global satellite positioning system (GPS) calculates its own spatial position through the combination of three or more satellite positioning signals received by the GPS receiver. This positioning method requires a special GPS receiver, and some use cellular phones for positioning. In the cell where the terminal is located, the cell where the mobile terminal is located is tracked and recorded by the positioning information server on the network, but the precise location cannot be accurately known, and the positioning accuracy is low. There is also an auxiliary positioning system AGPS that combines the above two methods of GPS and mobile. Cell positioning service of mobile communication is combined with GPS to solve communication problems by using mobile phones, but the cost of system implementation is high
At present, the 3G mobile communication system requires the mobile terminal to be able to locate in real time according to the frequency offset, but the existing method cannot achieve accurate positioning. If the sharing of positioning information is to be realized, additional wireless network communication equipment is required

Method used

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  • Multi-base station frequency shift integrated positioning method for mobile terminals
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  • Multi-base station frequency shift integrated positioning method for mobile terminals

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Embodiment Construction

[0012] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, which should not be construed as a limitation on the technical solution.

[0013] 1. The relationship between the frequency offset and the transmission frequency, movement speed and direction of movement is determined by the Doppler effect, as shown in the formula

[0014] f d = f C v · cos ( α ) - - - ( 1 )

[0015] Among them, α is the angle between the terminal moving direction and the signal propagation direction, v is the terminal moving speed, C is the speed of light, and f is the carrier frequency;

[0016] 2. Determine the frequency offset relationship of the mobile terminal relative to two base st...

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Abstract

The invention discloses a multi-base station frequency shift comprehensive positioning method for a mobile terminal. The positioning method utilizes the Doppler effect existing in the mobile terminal itself, and synthesizes the Doppler effect generated by the mobile terminal relative to multiple base stations to obtain the mobile terminal's Motion parameters, combined with the cell information to further obtain the position, speed and direction of the mobile terminal, to achieve continuous and dynamic positioning of the mobile terminal, and the positioning method is scientific and reasonable.

Description

technical field [0001] The invention relates to a mobile terminal positioning method, in particular to a mobile terminal multi-base station frequency shift comprehensive positioning method for mobile communication system frequency offset and mobile terminal real-time positioning. Background technique [0002] As we all know, the global satellite positioning system (GPS) calculates its own spatial position through the combination of three or more satellite positioning signals received by the GPS receiver. This positioning method requires a special GPS receiver, and some use cellular phones for positioning. In the cell where the terminal is located, the cell where the mobile terminal is located is tracked and recorded by the positioning information server on the network, but the precise location cannot be accurately known, and the positioning accuracy is low. There is also an auxiliary positioning system AGPS that combines the above two methods of GPS and mobile. Cell position...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00
Inventor 丁卫红赵建洋
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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