The Research Of IMS (IP Multimedia Subsystem) In Access Mechanism

AKA mechanism is defined by the Internet engineering task force (IETF), and was adopted by the 3GPP, widely used in 3G wireless network. IMS Authentication mechanism made use of this mechanism and the principle of core arithmetic ,so we call it IMS AKA mechanism. When Users want to be in IMS network ,they have to experience Packet domain Authentication,and then the IMS domain Authentication, the two processes in the process have a lot of repetition , so the the process of accessment in IMS network is more complicated,also it is low efficiency. The traditional IMS AKA mechanism did not consider well enough on the safety of user registration, IMS access process exists some unsafe factors make it more likely attacked .This article puts emphasis on the IMS AKA mechanism and the improved registration processes of Guangquan Chen, mainly analyses the potential problems on safety defects. Based on this, I put forward my own improvement method and design a new registration system,so it can improve the security and efficiency of the registeration process, and the results are verified in the simulation.