IMS与固定移动网络的融合

IMS and Fixed-Mobile Convergence

IP多媒体子系统(IMS)采用SIP协议进行呼叫控制,与接入无关,支持各种综合业务,因此,ETSI和ITU-T已将其作为NGN的核心结构。首先简要介绍了IMS的网络架构及其特点,分析了基于IMS实现固定移动网络融合的优势,提出了基于IMS的网络融合方案,并指出这种融合方案所面临的问题与挑战。

IP Multimedia Subsystem （IMS） use SIP as call session control protocol, and is irrelevant to access while providing various integrative services. Therefore ESTI and ITU-T have taken it as the core structure of NGN. This paper first presents the architecture and characteristic of IMS, then analyzes the advantages of implementing fixed-mobile convergence via IMS. The solution of network convergence via IMS is illuminated then; the problems about this solution are summarized at the end.