Research And Implementation Of Base Station Search And Base Station Synchronization In A TD-LTE Terminal Management And Control System

On the one hand,the ubiquity of mobile terminals has brought more and more convenience to people's lives;on the other hand,they still face huge challenges in terms of privacy theft and privacy security.Therefore,it is of great practical value to configure a management and control system that can interrupt communication or guarantee for specific users in many confidential situations.The thesis is mainly based on the subject of engineering construction practice,researching a communication management and control device based on pseudo base station TD-LTE network,and base station search and base station synchronization are the necessary prerequisites for management and control equipment to achieve control.At present,the existing base station search and synchronization module equipment is too large and expensive,and most of them cannot be really used in engineering development.The thesis aims at designing base station search and base station synchronization schemes and has practical engineering application value,and at the same time,it is necessary to achieve the control and control equipment parameters.Conduct specific research in the following areas.First,the thesis analyzes the existing scheme of the TD-LTE terminal management and control system.The advantages and disadvantages of the existing high-power noise-covering and monitoring control methods are discussed.A set of TD-LTE pseudo-base station management and control scheme based on IMIS identity information is designed,and the work flow of the management and control scheme is designed in detail.Then,starting with TD-LTE related technologies,the related principles and technologies such as TD-LTE system architecture,system messages,and synchronization signal algorithms are analyzed and studied.Secondly,the base station search solution is introduced in detail.The design and application of the LTE base station search software LTE-Cell-Scanner adds support for HACKRF and uses C language to develop,realize the search and analysis of the downlink signal sent by the public network base station,and obtain the construction of TD-LTE.Pseudo base station parameter template.At the same time,this thesis gives the base station synchronization method,and realizes the high-precision synchronization of the TD-LTE pseudo base station and the public network base station through GPS satellite timing technology.Finally,collect and analyze the real air interface data through the software radio platform,compare and test the mobile phone software access to the public network base station information,and verify the correctness and feasibility of the base station search scheme proposed in this thesis.By making the pseudo base station work to send the downlink signal and observing that the test mobile phone resolves to the signal transmitted by the pseudo base station,the correctness and feasibility of the base station synchronization scheme is verified.The solution has been applied to the development of TD-LTE management and control equipment.