一种基于RTCP反馈的3G流媒体速率控制算法  

Rate Control Algorithm for 3G Streaming Media Service Based on RTCP Feedback

作　　者：荣慰 康桂华[1] 李慧[1] 

机构地区：[1]河海大学计算机与信息学院,江苏常州213022

出　　处：《现代电子技术》2010年第21期21-23,27,共4页Modern Electronics Technique

摘　　要：在3G流媒体业务中,缓存数据溢出严重地影响了多媒体画面质量和媒体播放的流畅性,降低了用户对流媒体业务感知的满意度。为了解决这个问题,根据3GPP PSS提出的反馈机制,阐述了一种基于RTCP反馈信息的3G流媒体速率控制算法。通过计算机仿真证明,该算法不仅有效防止了缓存数据上溢,而且保证了发送效率,避免了缓存数据欠载,从而实现了高质量的流媒体服务。The buffer data under-run seriously affected the quality of multimedia images and media playback smooth,and reduced the user perceived streaming media business satisfaction in the 3G streaming media services.To solve this problem,the RTCP feedback-based 3G streaming media rate control algorithm according to 3GPP feedback mechanism is introduced.The simulation proves that the algorithm not only effectively prevented the buffer overflow,and ensured the efficiency of transmission to avoid buffer underflow,in order to achieve the high-quality streaming media services.

关 键 词：RTCP反馈 网络缓存上溢 客户缓存下溢 速率控制 

分 类 号：TN929.5[电子电信—通信与信息系统]