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rapid deployment - 2009 2009 International Conference on...

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A rapid-deployment service platform over IMS network Ching-Wen Cheng, Kuei-Hui Chen Information and Communications Research Laboratories, Industrial Technology Research Institute, Taiwan Abstract In this paper we propose a rapid-deployment service platform to facilitate the development and the distribution of communication services over IMS network. The mechanism and the architecture to achieve a rapid-deployment platform are discussed. Furthermore, we implemented the platform in an IMS application server (IP-SMS), which provides IP-based short message service over IMS networks. On top of IP-SMS, the interoperation model of add-on services and the IMS network is presented. 1 Introduction The convergence of fixed and mobile (FMC) networks is an evident direction of data communications and telecommunications [1]-[4]. The implementation strategies are divergent in the market [1]. Most of the solutions emphasized on service continuity rather than on enhancing the efficiency of the development and deployment of add-on services. Introducing new services to telecommunications system often is a time-consuming and costly effort. Nowadays, an open platform for application development is a perceptible approach, and an efficient way to deploy and to distribute add-on services over FMC environment is an open issue. IP Multimedia Subsystem (IMS) is a wild-adopted communication network architecture for the convergence of data and speech, fixed and mobile communication services. Based on IETF Session Initiation Protocol (SIP), IMS allows real-time transmissions on UMTS packet-switched domain [5][6], and realizes a unified multimedia communication environment to users. Introducing new services to IMS network should comply with the operation model of IMS application servers (AS) which provides add-on services over the IMS core network. IETF and OMA (Open Mobile Alliance) are the major standard forces working on specifying the operation paradigms and references of more services. Standard forces devote to standardizing the signaling procedures as well as the architecture of various IMS AS types. The service types include short messaging, push to talk over cellular (PoC), instance messaging, and presence service. The effort guarantees the interoperation between services on different networks. For complying with standards, introducing new services to IMS network will undergo the process of implementing and deploying new IMS ASs. However, developing a new IMS AS is not straightforward, especially for third party service developers who are not incumbent operators. Moreover, the demands of new services are varied and dynamic that may be far beyond the progress of standard forces. A rapid-deployment service platform will markedly benefit the realization of new services.
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