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.
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 intrastream 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.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2005年第5期686-690,696,共6页
Journal of Xidian University
基金
高等学校博士学科点专项科研基金<互联网多媒体通信中媒体同步技术研究>资助项目(20010701006)
综合业务网与关键技术国家重点实验室资助项目
华为公司基金资助项目
关键词
多媒体同步
资源预约协议
实时传输协议
实时流协议
multimedia synchronization
resource reservation protocol
real time transport protocol
real time streaming protocol