【摘要】 在分析实时服务应用协议的基础上,提出一种将资源预约协议和实时流协议结合起来以建立和管理预约带宽的流会话,用实时传输协议来承载多媒体的同步控制方案.该方案将用户对同步的要求映射为资源预约协议中的流描述FLOW SPEC,以此来预约资源,用实时控制协议数据分组来判断网络状态并控制会话质量,通过对播放过程的调整实现媒体同步.该方案能够保证实时媒体流的媒体内和媒体间同步.更多还原

【Abstract】 Based on the analysis of the Resource Reservation Protocol(RSVP),Real time Transport Protocol(RTP),Real time Control Protocol(RTCP) and Real Time Streaming Protocol(RTSP),a multimedia synchronization control scheme over IP is proposed.It combines RTSP with RSVP to set up and manage reserved-bandwidth streaming sessions that are carried by RTP.After mapping users’ synchronization requirements into the network QoS(FLOWSPEC in RSVP),RSVP can reserve resource to guarantee intra-stream synchronization.RTCP control packets can be used to determine the network congestion state and to control the quality of session.,Inter-stream synchronization can be achieved by adjusting the process of playout.With this scheme,intra-stream and inter-stream synchronization can be guaranteed in real-time multimedia applications over IP.更多还原