0. ims network architecture

0. ims network architecture - 2009 International Conference...

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IMS Network Architecture Mohammed A Qadeer, Afaq H. Khan, Juned A. Ansari, Sariya Waheed Department of Computer Engineering Zakir Husain College of Engineering & Technology Aligarh Muslim University, Aligarh, India {maqadeer, afaqkhan, junedahmad, [email protected] Abstract —There is a rapid growth and evolution in the area of telecommunications and network operators are expected to provide seamless integration of all communication applications on a single system. In these circumstances IMS has emerged out as a key player. IMS is basically a network architecture consisting of an IP-based core network connected to multiple access networks to provide a converged service to wireless, wireline and cable subscribers. IMS has established itself as a foundation for future wireless and wireline convergence. It provides an opportunity to build an open IP based service platform that will enable an easy and efficient deployment of new multimedia communication services mixing telecom and data services. One thing which really makes a difference is that a common IMS based service platform can be used to serve various access mechanisms such as WiMAX, WiFi, UMTS, GSM, CDMA etc. IMS fills the gap between two of the most successful communication paradigm cellular and internet technology. This paper surveys the IMS network architecture and how its various components interact with each other. Keywords: IMS, network architecture, UMTS, 3G, NGN, 3GPP, 3G.IP, FMC, IPTV, VoIP, Wi-Fi, Wi-Max, PoC. I. INTRODUCTION Some years ago, it was forecast that the future of telecommunications would be wireless, with all legacy wire- line circuit-switched networks of voice and data communications phasing out. However, this has not proven to be the case, and broadband access penetration is growing steadily. In fact, access technologies such as Digital Subscriber Line (DSL) have enabled operators to leverage their existing network infrastructures, and are reshaping the entire value network. Wire-line broadband services are a very powerful distribution channel. Through the rolling-out of new services, including television-over-IP (IPTV), Voice-over-IP (VoIP), and double- and triple-play offerings, end-users are getting more experienced with using Internet-based technologies in their everyday lives, outside the closed PC world. This opens up new perspectives regarding “mobile Internet,” especially when transferring broadband services into the wireless communications world [10]. This paper focuses on the architecture of an IMS network. IP multimedia core network subsystem is a collection of different function, linked by standardize interfaces which grouped from one IMS administration network. Communication services such as multimedia telephony, push to talk and instant messaging are offered by the IMS network over a session initiation protocol infrastructure. Most important components of the IMS architecture are the application servers which host and execute the logic of the IMS services. Some standard bodies
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0. ims network architecture - 2009 International Conference...

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