Design And Implementation Of Active Detection System For Mobile Terminals Based On LTE Micro Base Station

Nowadays,mobile communication network has spread all over the world,people's work and life are increasingly inseparable from mobile terminal products.With the development and popularization of mobile terminals,the activities carried out by mobile terminals are also increasingly diversified,such as earthquake relief,information theft,examination fraud,etc Therefore,it is very important to detect mobile terminals in specific places.Based on the research of the key technologies of LTE network and mobile terminal detection,a low-cost and portable LTE dedicated micro base station is designed to meet the detection needs of mobile terminals in different places.The main work includes the following three aspects:(1)To solve the problems of high cost and complex operation of existing terminal detection technology in 4G mobile communication system,an improved scheme is proposed The current 4G terminal detection technology uses jammers to make the terminals in 4G state fall back to 2G or 3G state quickly after entering the detection area.The design is complex and the energy consumption is large,which greatly increases the cost of the detection base station equipment.Based on the research of wireless access technology in LTE system,an improved scheme is designed,that is,the active detection of mobile terminal is realized by designing LTE micro base station and induction technology(2)Two detection modes,including terminal identity information detection and terminal network signal shielding,are designed to meet the detection needs of mobile terminals in different places.According to the theoretical research of LTE cell reselection and tracking area update,the signaling flow in two modes is designed,and the detection scheme of LTE micro base station in different scenarios is realized(3)The overall test environment is built,and the function and performance of the detected micro base station equipment are tested and verified.The expected results are obtained and the results are reasonably analyzed.