【摘要】 由于IP多媒体子系统(IMS)具有采用SIP协议进行呼叫控制、与接入无关和能够灵活提供多种业务的特点,ETSI和ITU-T已确定将其作为NGN的核心结构。在介绍IMS体系结构的基础上,分析了基于IMS实现固定和移动网络融合的可行性,并提出了融合网络的参考架构。更多还原

【Abstract】 Since IP Multimedia Subsystem (IMS) has the characteristic of using SIP as call session control protocol and being irrelevant to access while providing various services, ITU-T and ETSI have presumed that IMS framework is the core structure of NGN. This paper first introduces the architecture of IMS, then analyzes the feasibility of IMS-based fixed-mobile convergence, and presents the reference architecture of the converged network.更多还原