Research And Development Of Terminal Positioning Application Based On Air Interface Parameters

Information and communication in modern society has brought great convenience to people's lives,and most needs of information in our life is related to location information.Therefore,positioning technology has become continuous research hotspot.Based on the difference of application scenarios,positioning teclhnology is divided into two branches,including indoor positioning technology and outdoor positioning technology.Outdoor positioning technology includes two aspects:the satellite positioning system and the mobile positioning technology.The satellite positioning system is mature and the positioning accuracy is high,but the satellite signal is sensitive to the building block,so the positioning technology based on mobile communication system is developing rapidly.This paper pays attention to the technology of mobile positioning in outdoor positioning technology,and propose a new method of grid matching based on the intensity of received signal in the air interface parameters.So-called air interface is the technical specification of the wireless transmission between the mobile terminal and the base station,which is used for the communication between mobile station and mobile communication system.The algorithm uses received signal in the air interface parameters of as many base stations.Meanwhile a correction model is used to update received parameters.The algorithm then gets accurate location information with a grid matching idea.The complexity and cost of the algorithm is analyzed in this paper,which provides guidance for the application.Performance of the algorithm is also analyzed in different scenarios,such as high load,high speed,shadow fading,network delay and so on.Combining the large quantities of measured data,this paper analysis the promotion of this algorithm than traditional positioning algorithm based on received signal strength by comparison and also analysis the importance of correction model and fitting regression in the algorithm.This paper focuses on two aspects of the positioning algorithm,researching and developing.On the aspect of developing,this paper will introduce the development of APP based on the Android platform.Android is a platform for the development of mobile devices,which includes operating system,middleware and core applications.Android operating system has become the most widely used operating platform for mobile applications.The paper will introduce the development process of APP based on grid matching algorithm in detail,and display the results of the development.