IP multimedia subsystems in 3GPP and 3GPP2: overview and scalability issues

The Internet has experienced tremendous expansion in the past several years. Demands for IP multimedia services are emerging. The third-generation (3G) wireless networks aim to support mobile users with numerous Internet services. 3G standards organizations are developing IP multimedia subsystems (IMS) to achieve seamless integration between Internet and 3G networks. Moreover, the collaboration between IETF, 3GPP, and 3GPP2 is essential to the development of IMS for next-generation networks. This article first provides an overview of 3GPP and 3GPP2 IMS and illustrates the IMS requirements, architectures, and functional models. We then discuss potential scalability issues in IMS. This article provides guidance for constructing a robust and scalable IMS.

[1]  Kee Chaing Chua,et al.  Policy-based QoS architecture in the IP multimedia subsystem of UMTS , 2003 .

[2]  Yi-Bing Lin,et al.  One-pass GPRS and IMS authentication procedure for UMTS , 2005, IEEE Journal on Selected Areas in Communications.

[3]  Basavaraj Patil,et al.  IP multimedia services: analysis of mobile IP and SIP interactions in 3G networks , 2004, IEEE Communications Magazine.

[4]  Jyh-Cheng Chen,et al.  Comparative study of protocols for dynamic service negotiation in the next-generation Internet , 2006, IEEE Communications Magazine.

[5]  W. Franx,et al.  Redundancy and Scalability in IMS , 2006, Networks 2006. 12th International Telecommunications Network Strategy and Planning Symposium.

[6]  Keith Knightson,et al.  NGN architecture: generic principles, functional architecture, and implementation , 2005, IEEE Communications Magazine.