基于IMS会话连续性的流媒体切换技术

IMS Session Continuity Based on Streaming Media Transfer Technology

面向多终端用户的流媒体业务提供环境,需要解决流媒体业务在不同终端之间的平滑迁移问题。针对这一问题,深入分析了相关组织制定的有关业务连续性和会话迁移的标准、规范,根据业务连续性和REFER方法,并采用咨询迁移模式,设计了支持终端间切换的流媒体应用系统。最后结合IMS、SIP和live等开源项目,构建了整个流媒体切换系统,实现了终端之间媒体节目的平滑迁移,保证了用户在不同终端上切换媒体节目时观看的连续性问题。

To provide a streaming service in a multi-terminal user environment,some effort should be made to solve the problem of smoothly transferring the streaming media between terminals,with regard to which the relevant standards and specifications of service continuity session transfer are thoroughly analyzed.According to the session continuity and REFER method,the consultative Transfer mode is chosen to design the streaming media application switch to support inter-device transfer.Finally,Open IMS,PJSIP and other open source project are chosen to construct the entire streaming media transfer system,and a smooth migration of the media between terminals is achieved so as to ensure a smooth and continuous transfer and switch between different terminals.