Research And Implementation Of RRC Signaling Analysis Technology In 5G Terminal Simulation

With the rapid development of mobile communication technology and the explosion of mobile network data,in the initial stage of 5G network commercialization,network technology testing,maintenance and optimization are facing many challenges,and professional testing tools are urgently needed.Therefore,it is particularly important to develop a suitable 5G terminal simulator tool for 5G network construction,optimization and research.This thesis relies on the National Science and Technology Major Project and the Chongqing Key Industry Common Key Technology Innovation Project,and is based on the Radio Resource Control(RRC)layer protocol standard in the 5G network system protocol stack as the theoretical support.This thesis focuses on the research and improvement of the signaling analysis algorithm,and a Fibonacci hash large-top heap signaling analysis improved algorithm and a new signaling analysis system architecture solution that meets the requirements of the subject are proposed.The module was designed and implemented,and the test was completed.1.The key technologies of 5G network architecture,protocol stack,RRC layer protocol and signaling analysis are detailed overview.Based on the functional requirements of the 5G terminal simulator project,the overall system architecture,logical design and system flow are introduced.2.Based on traditional signaling analysis algorithms,the 5G system signaling analysis algorithms is studied and analyzed.Through the research and improvement of two methods of constructing hash function of hash signal analysis algorithm and dealing with hash conflict,a Fibonacci hash large-top heap signaling analysis algorithm is proposed.Simulation results show that compared with the traditional algorithm,the proposed improved algorithm reduces the time and memory by 45.85% and 61.83% on average,achieving the expected results and meeting the needs of the project.3.Based on the concept of 5G network "micro services",combined with the proposed improved algorithm in the process of signaling association synthesis,and using modular design ideas,a new RRC signaling analysis module overall system architecture and high-level software architecture is proposed.Based on the above architecture,themain modules such as data collection,decoding synthesis,multi-protocol association and signaling back-check are designed in detail.4.The test platform is introduced,and the RRC signaling analysis module test solution that meets the needs of the subject is designed,and each module is functionally tested according to the plan.The test and analysis results show that the accuracy rate of signaling analysis,decoding and synthesis meets the requirements of the subject.System signaling search,data playback and other functions are stable and reliable,and achieve the expected goal.The exploration and research results of the signaling analysis technology in this thesis provide theoretical support for 5G mobile communications.The technical solution is applied to the development of 5G terminal simulator projects,which provides effective support for the construction and optimization of 5G networks.