The Research And Realization Of Session Process Based On The Communication Technology Of IMS

In this paper, we studied the IP Multimedia Subsystem, aka the IMS. As a kind of technical solutions in the field of fixed telephone which has a rapid speed of development in recent years, IMS is gradually occupied the domestic fixed-line market in the past few years, including operators like China Mobile, China Unicom and China Telecom, and IMS construction project is getting more and more important in communication field. And the realization of Vo LTE is need to be based on the technology.First, this paper introduces the basic theory of the IP Multimedia Subsystem solution, especially the architecture, characteristics and relevant solutions are briefly introduced. Four kinds of sub-solution is mainly introduced, including VOBB solutions, PSTN network solutions, converged conference solution, and Vo LTE solution.Second, the realization of the function of core network is inseparable from the access device, therefore, this paper also introduce the related principle of access network technologies. Access network access mainly contains two parts: x DSL/x PON/LAN access and AG/AGCF access. The content covers the actual networking applications in the most common way of broadband access, fiber access and IAD access.Then, this article also introduces inter-communications between networks. As a new communication solution, IMS need to connect with a number of traditional Internet solution, containing PLMN, PSTN and NGN network, which are widely used in the communication industry. Network communication between not only contains the signaling exchange, but also including the media exchange, this requires a variety of network communication technology.In the end, the two most basic processes in IMS solution- registration processes and session process are analyzed and researched in this paper. It also discusses the principle of the two processes and the analysis of the implementation and network elements in the two processes involved in the network elements in the two’s role in the process. According to the actual data configuration of IMS equipment, track, get the actual IMS registration processes messages and session process, the content of the message for the main and contains parameters for interpretation.In the actual IMS point, register and session process implementation is the foundation ofother functions, so the analysis of the two basic flow has the extremely vital significance. For 4G technology,the solution of VOLTE, IMS is also have a vital role.