Application Of VoLTE Technology In The Core Network Of Unicom

At the beginning of 4G network construction,due to the low coverage of the core technologies EPC and IMS of VoLTE,users of mobile terminals have to use conventional networks for voice calls,but they are limited by their software and hardware conditions and communication technologies.The quality of voice and multimedia calls cannot meet the satisfaction of users and operators.Although the stability is guaranteed,the quality of the call will be intermittent.In terms of communication security,the mobile communication core network relies on the all-IP network structure,and its network service equipment and network will be highly vulnerable to Internet viruses and hackers,and the information of communication users is also highly vulnerable.Due to the high integration of IP technology in the communication industry,once the core communication equipment has problems,it will affect a large area of traffic services,data traffic services,and network private line services,which will bring great economic losses and society to operators.Negative impacts can be seen in the importance of cybersecurity.On the other hand,from the perspective of the mobile terminal user,the call delay and call stability caused by the handover between the fourth generation network and the third generation network also affect the services provided by the operator.With the various online banking transactions,business negotiations,stock fund trading and other services have also been transferred to the mobile terminal processing,the role of mobile terminals in people's lives is also more important,which has higher requirements for network security,how to ensure The property of mobile phone users is protected by security,which is an unavoidable problem for operators in commercial LTE.How to maximize the advantages of VoLTE technology,ensure that the core technology IP multimedia subsystem IMS and IP packet core network EPC of the fourth-generation core network achieve the expected use effect,and provide users with high-quality voice communication service experience,this aspect of research It has important theoretical and practical significance.Through research,we can grasp the technical architecture of VoLTE and the network security similar to traditional voice communication,and then optimize the security mechanism of VoLTE technology,propose a specific application design plan,and form a conclusion.Based on the research of advanced mobile communication VoLTE technology,this paper conducts detailed research on its application in the core network of China Unicom.Firstly,it analyzes the background significance of the research and the research status at home and abroad,and then the background and technical principles of VoLTE communication technology.Discuss and combine the application research of VoLTE technology in the core network of Unicom to form the design scheme of VoLTE technology in the core network of a certain area,and apply the call session control function,multimedia voice service server application,session border controller application,media gateway control.The functional application is specifically designed,and the application results are verified by tests to form an effect analysis conclusion.