Data Acquisition And Network Quality Analysis Based On LTE Core Network Signaling

In modern society,people can not live without mobile communication,after 30 years of development,mobile communication has changed a lot from business data,digital network technology and intelligent network equipment.From last century 80’s or so when the first generation of mobile communication technology coming to our life,the development of mobile communication technology has gone through four stages;after GSM and UMTS,LTE has become the mainstream of the global mobile communication;although China use LTE technology only two years,the speed of development is almost faster than any other countries.After the first year of 4G,LTE is still in a period of rapid development in China.However,opportunities and challenges coexist,now mobile internet users pay more and more attention to the user experience,hoping to enjoy a more abundant and convenient communication services.Because of the fierce competition in 4G market,service providers and even users are more concerned about the quality of mobile networks.In this context,the signaling collection and processing in LTE network,as well as the quality analysis of the LTE network,become very important.At the same time,the core network plays an important role in LTE network.We need to understand the operation of the signaling network,in order to solve the network problem promptly and improve service with high quality.This thesis uses LTE core network signaling data and the signaling data in interface S1-MME is our focus.The signaling process in interface S1-MME has a relationship with interface S6a and S11 etc.These interface have coverd the main elements in LTE core network and we can understand the overall situation of LTE core network with analyse them.Firstly,this thesis introduces the LTE network structure and characteristics,and shows an overview of the main elements,interface and related signaling protocol in LTE core network.Then,this thesis introduces the overall design and implementation of LTE core network signaling data collection and quality analysis system(LCAS)and describes the main functions of the system in detail.With the deployment of the system in the current network environment,the signal flow of LTE core network can be collected and processed.Then,we evaluate the quality of the network by analyzing the output of the data collection system.Finally,the signaling analysis of LTE core network is summarized and prospected.