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| Study on a Universal Service Description Model for NGN |
| Shuang Kai; Yang Fang-chun |
| State Key Laboratory of Networking & Switching Technology Beijing University of Posts and Telecommunications, Beijing 100876, China |
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Abstract An implementation and network platform independent model for NGN service description, FE-FR SDM (Four Elements - Full Relations Service Description Model), is proposed. This model consists of four elements: EP (EndPoint), CL (Communication Link), REL (Relations between Endpoints and Links) and RL (Relations between Links). The characteristics and the attributes of EP and CL are analyzed which are static parts of a service and REL and RL are described by directed graphs which model all possible behavior of the service. This model contains most basic properties used for requirements analysis and service architecture design, can support arbitrary number of users and one user can communicate with others in an arbitrary way. The comparison analysis with FE-FR SDM and other existent models is made, and a multimedia service is described to verify the practicability of this model.
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Received: 04 January 2007
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2008, Vol. 30 
