一种改进的自适应多媒体拥塞控制方法

在Internet中传输实时多媒体需要性能良好的拥塞控制机制来确保一定的服务质量。应用实时传输协议RTP的反馈报文的信息,开发了使用参数自适应变化的AIMD拥塞算法来消除拥塞,最终得到了一种改进的单播多媒体自适应拥塞控制算法。经OPNET网络仿真分析,在各种丢失率环境下,算法的发送速率平滑性等性能表现良好,较好地满足了网络多媒体的传输特性需求。

A Modified Adaptive Congestion Control Method for Multimedia Streaming

Multimedia communication in Internet requires congestion control mechanism with high performance to insure quality of service in definite degree. With the information of the feedback message of real-time transfer protocol RTP, AIMD congestion adjustment arithmetic with parameter varying adaptively is exploited to abate congestion. Finally, modified adaptive congestion control arithmetic for unicast multimedia streaming can be gained. This paper analyzes this arithmetic with OPNET simulation tool. Under diversified loss ration condition, it behaves goodly on performance, such as the smoothness of sending rate. It can satisfy the requirement of transfer character of multimedia steaming transferred in Internet network.