A Method for Mobile Terminal Positioning Using Beam Features

Abstract

The present invention relates to the field of mobile communication, in particular to a method for positioning a mobile terminal by using beam characteristics. In this method, the phased array antenna of the base station periodically sends out beams in different directions. When the mobile terminal needs to perform positioning, the mobile terminal searches and Receive the beam of the phased array antenna and perform positioning according to the beam, specifically including: the base station calculates the actual measured path loss between the mobile terminal and the phased array antenna; the base station calculates the distance between the mobile terminal and the phased array antenna based on the actual measured path loss The base station calculates the position information of the mobile terminal relative to the phased array antenna by combining the actual measurement of the path loss and the distance between the mobile terminal and the phased array antenna; the present invention only needs one antenna array to realize the positioning of the mobile terminal , there is no need to coordinate positioning information among multiple base stations.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for positioning a mobile terminal by using beam characteristics. Background technique [0002] With the development of mobile communication technology, mobile communication terminals are widely used in people's daily life. There are many positioning methods for mobile terminals, the most commonly used are the Global Positioning System (Global Positioning System, GPS) of the United States and the GLONASS Satellite navigation system (GLONASS), Europe's Galileo satellite navigation system (GSNS), and China's BeiDou Navigation Satellite System (BDS). The satellite positioning method was mainly used in the military at the beginning, and it has been widely used in the civil society. In the mobile communication system, in order to speed up the search speed of the mobile terminal and improve the positioning accuracy, the Assisted Global Positioning System (AGPS) technology is...

AI Technical Summary

Problems solved by technology

[0004] First: the mobile terminal needs to obtain the specific locations of at least three base stations, which consumes a lot of signaling resources, especially the mobile terminal needs to obtain the location information of the base stations of neighboring cells, and the mobile terminal needs to interact with multiple base stations to complete;

[0005] Second: The mobile terminal needs to obtain the distance between the mobile terminal and the base station, and needs to obtain the distance of at least 3 base stations to complete the positioning, which brings great difficulties to actual practical use and increases the signaling between the mobile terminal and the base station load;

[0006] Third: If the positioning of the mobile terminal by the base station is completed, information coordination between multiple base stations is required to complete the positioning of the mobile terminal, and the mobile terminal chooses to locate the base station is not fixed, which increases the signaling between the base stations transmission

[0012] In signal processing, the radar uses array antennas to solve the detection and positioning problems of target objects, but based on the radar sending beams, and then receiving the target object to transmit signals, and finally calculating the azimuth and distance of the target object relative to the array antenna, but this The method is not applicable to mobile terminal positioning

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