Performance Analysis of IMS Signaling in ...

The deployment of IP Multimedia System (IMS) is on the rise and hence performance analysis og IMS becomes a critical area that needs to be investigated. One of the key areas to be addressed in this paper is the signaling part of the IMS architecture. IMS uses the Session Initiation Protocol (SIP) for its signaling during session establishment and termination. The nature of transactions involved in IMS is short and frequent hence signaling overhead needs to be analyzed. In this paper, we present the analysis of IMS signaling for some of the key SIP messages used in the IMS signaling. Also, the scalability and performance of the signaling portion are evaluated by using Network Simulator version 2 (NS2).