Service Discovery Architecture Based on IMS for Future NGN

IP multimedia subsystem (IMS) realizes the convergence of fixed and mobile networks. In virtue of providing various types of multimedia services among different kinds of access networks, IMS is considered as the core network for future next generation networks. For detecting the requested services quickly and efficiently, it is necessary for IMS to adopt a valid service discovery function. In this paper, we propose a novel service discovery architecture (SDA) to support a universal service discovery function independent of any specific network access technology. Also, we analyze the performances of the new SDA.