一种基于RTCP协议的流量控制算法  

A Method of Flow Control Based on RTCP

作　　者：赵曙光[1] 

机构地区：[1]中国电子科技集团公司第28研究所,江苏省南京市210007

出　　处：《信息化研究》2010年第5期28-30,共3页INFORMATIZATION RESEARCH

摘　　要：介绍了RTP(实时传输协议)流量控制的步骤和可用的流量控制措施,分析了传统流量控制算法的不足,在此基础上,提出了一种改进流量控制算法。该算法通过改变RR(接收者报告)报文的发送规则,设置两个丢包率门限,以及同时调整报文发送周期和数据编码方式等途径,以减小丢包率,提高数据流的平稳性。仿真结果表明,改进流量控制算法能够根据丢包率对RTP数据报文的发送周期和数据编码方式进行自动调整,并有效消除由于丢包率波动而引起的流量变化。This paper firstly introduces flow control steps and available measures in real transmission protocol. Then,we analyses shortage of traditional flow control algorithm. And based on it,we propose a modified flow control algorithm. By means of modifying send rules of receiver report packet,setting tows thresholds of ratio of packets lost,and adjusting packet send interval and payload type,the algorithm can reduce ratio of packets lost and enhance the smooth data stream. The simulation result shows that the modified flow control algorithm can automatically adjust the transmission interval and payload type of RTP packet based on ratio of packets lost. So eliminating flow fluctuation due to jitter of packets lost.

关 键 词：实时传输控制协议 流量控制 发送周期 

分 类 号：TN919[电子电信—通信与信息系统]