Research On Identity Information Detection And Management-control Technology Of LTE Terminal

With the increasing saturation of PC Internet market in China,mobile internet presents a spurt of development.Under the background that LTE network has become the mainstream commercial mobile communication network with its advantages of high speed and low latency,LTE Intelligent Terminal has become an indispensable tool in people's daily life.Therefore,we can effectively grasp the trajectory and past records of people in and out of the city by detecting the identity information of LTE terminals in public.At the same time,it can track the behavior trajectory of the target.In addition,the security department needs to control the communication of terminals in confidential situations for preventing the occurrence of theft and leakage incidents.Without interfering with the normal communication of other users,the public security department needs to prevent criminals from communicating with the outside world during the arrest of criminals.Therefore,it is of great practical significance to study the identity information detection technology and communication control technology for LTE terminals.Firstly,according to the characteristics of traditional LTE terminal managementcontrol technology and electronic fence technology.In this paper,the feasibility of three key technologies,i.e.pseudo base station adsorption LTE terminal,LTE terminal identity information detection and LTE terminal management-control based on signaling process,involved in the scheme of LTE terminal identity information detection and managementcontrol is analyzed in detail.A method of LTE terminal identity information detection and communication management-control based on TAU and Attach process is proposed.Secondly,acquiring the parameter template of building LTE pseudo base station and adsorbing LTE terminal to access pseudo base station are the necessary prerequisites for realizing the identification information detection and management-control of LTE terminal.Therefore,this paper designs the scheme of acquiring parameters template of LTE pseudo base station and the scheme of adsorbing LTE terminal by pseudo base station,including the full coverage LTE terminal identity information detection and management-control scheme and target LTE terminal identity information detection and management-control scheme.Then,the design scheme is implemented on the software radio platform.By developing the GNU Radio frequency hopping module and working with the software of matlab,the scheme of acquiring parameters template of LTE pseudo base station is realized.The scheme of adsorbing LTE terminal by pseudo base station is realized through the OpenLTE project.By modifying OpenLTE and OpenBTS source code,the full coverage LTE terminal identity information detection and control scheme and the target LTE terminal identity information detection and control scheme are realized respectively.Finally,the platform is built to test and verify the system functions.The test results show that the full coverage LTE terminal identity information detection and managementcontrol system can achieve the purpose of identity information detection and communication control for all LTE terminals in the signal coverage area of pseudo-cell.The target LTE terminal identity information detection and management-control system can not only filter out the target terminal,only detect the target terminal identity information,but also realize the communication control for the target terminal without affecting the normal communication of the non-target terminal.