Method for realizing positioning by mobile communication signals and system
A mobile communication and signal technology, used in wireless communication, electrical components, etc., can solve the problems of low positioning accuracy, fading, and inability to better meet users, and achieve the effect of high positioning accuracy
Active Publication Date: 2013-12-04
THE HONG KONG POLYTECHNIC UNIV
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Problems solved by technology
At present, mobile phone positioning is mainly based on the received signals of multiple base stations around the mobile phone. It does not need to modify the hardware of the mobile phone, and the cost is low. However, due to the complexity of the metropolitan environment, the signal will be reflected during the propagation process. Diffraction or scattering, etc., due to the different arrival times of signals propagated by different paths, time delay spread will occur, that is, the multi-path effect
At the same time, because the phases of signals propagated by different paths are different (or even completely opposite), the amplitude of the synthesized signal changes rapidly, thus forming fading
When the positioning is performed through the received signal, the positioning result will be inaccurate, the positioning accuracy is low, the error is generally about 200 meters, the positioning accuracy is low, and it cannot better meet the needs of users
Method used
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[0035] Such as figure 1 As shown, it is a flow chart of the method for realizing positioning through mobile communication signals in the present invention. The base station transmits multiple electromagnetic beams through multiple antennas, and each electromagnetic beam transmits in different directions and contains specific direction information. The method for realizing positioning through mobile communication signals in the present invention mainly includes the following steps:
[0036] Step S0: start;
[0037] Step S1: Detect the electromagnetic beam received by the mobile terminal, and determine the strongest electromagnetic beam with the strongest received energy sent by each base station;
[0038] Step S2: Obtain the direction information contained in each strongest electromagnetic beam respectively;
[0039] Step S3: Obtain the location information of the mobile terminal according to the direction information included in the multiple strongest electromagnetic beams; ...
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The invention relates to a method for realizing positioning by mobile communication signals, wherein base stations transmit a plurality of electromagnetic beams by a plurality of antennas; and each electromagnetic beam is transmitted in different directions and contains specific direction information. The method comprises the following steps: S1, detecting the electromagnetic beams received by a mobile terminal and judging the strongest electromagnetic beam which is transmitted by each base station and has the strongest capability of receiving energy; S2, respectively acquiring the direction information contained by each strongest electromagnetic beam; and S3, obtaining position information of the mobile terminal according to direction information intersection contained by the plurality of strongest electromagnetic beams. The invention also relates to a system for realizing position by the mobile communication signals. In the invention, the positioning accuracy is higher, the error can be controlled in 100m, and the need of a user can be met better.
Description
technical field [0001] The present invention relates to the technical field of mobile communication, more specifically, to a method and system for realizing positioning through mobile communication signals. Background technique [0002] With the popularization of mobile phones, mobile phone positioning is becoming more and more popular, which can be used in applications such as alarm, emergency rescue, tourism and vehicle management. At present, mobile phone positioning is mainly based on the received signals of multiple base stations around the mobile phone. It does not need to modify the hardware of the mobile phone, and the cost is low. However, due to the complexity of the metropolitan environment, the signal will be reflected during the propagation process. Diffraction or scattering, etc., due to the different arrival times of signals propagating through different paths, time delay spread will occur, that is, the multi-path effect. At the same time, since the phases of...
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IPC IPC(8): H04W64/00H04W88/18
Inventor 陈武姬生月潘郑淑贞
Owner THE HONG KONG POLYTECHNIC UNIV