IMS中基于策略的业务触发框架

his paper first introduces the current service triggering mechanism in the IP Multimedia Subsystem (IMS), and then analyzes the defects of it. On the base of results we have gotten, we proposed a Policy based Service Triggering Framework (PSTF). It can trigger service dynamically in real time according to the policy logic. PSTF not only can satisfy the needs of colorful IMS services, make the service triggering flexible and dynamical, but also can avoid the shortcomings of the current service triggering mechanism in the IMS, besides that, PSTF can be easily extended in detail according to the needs.