Patent ID: 8731580
Filing Date: 2014-05-20
Classification: H04W

Abstract:
1. A terminal positioning system, comprising: a first base station, a second base station and a terminal to be positioned which is located in an overlapped coverage area of the first base station and the second base station, and the system further comprises: a first distance acquiring module, which is configured to acquire a first distance between the first base station and the terminal according to first time offset information of the terminal, wherein, the first time offset information is time offset information, obtained in a process of the first base station ranging for the terminal, of the terminal relative to the first base station; a second distance acquiring module, which is configured to acquire a second distance between the second base station and the terminal according to second time offset information of the terminal, wherein, the second time offset information is time offset information, obtained in a process of the second base station ranging for the terminal, of the terminal relative to the second base station; an angle acquiring module, which is configured to acquire a first signal arrival angle of the terminal relative to the first base station and a second signal arrival angle of the terminal relative to the second base station according to the first distance, the second distance and a third distance between the first base station and the second base station; a first positioning module, which is configured to obtain an initial location of the terminal according to the first signal arrival angle and the second signal arrival angle; and a second positioning module, which is configured to calibrate the initial location of the terminal to determine an accurate location of the terminal.