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本文针对Internet传输协议TCP的和式增加积式减少 (AIMD)拥塞控制机制不适应多媒体通信 ,而目前拥塞控制的研究又大多集中在尽量做好 (Best effort)服务上的问题 ,结合Internet上多媒体通信的特点及其对QoS的要求 ,提出了一种将多媒体通信服务质量 (QoS)控制和基于速率拥塞控制结合起来的拥塞控制的新机制 .本文详细地研究了这一机制 ,并提出了源端多媒体数据流的带宽控制策略、基于动态部分缓存共享 (DPBS)的数据包丢失控制方案和接收端计算包丢失率p的方法 .最后给出了整个拥塞控制机制的系统结构
In this paper, the AIMD congestion control mechanism of Internet Transport Protocol (TCP) is not suitable for multimedia communication. At present, the researches on congestion control mostly focus on the best effort service, Communication characteristics and QoS requirements, a new mechanism of congestion control based on multimedia communication quality of service (QoS) control and rate-based congestion control is proposed.In this paper, we study the mechanism in detail and propose a new source Bandwidth control strategy of end multimedia data stream, packet loss control scheme based on Dynamic Partial Cache Sharing (DPBS) and method of calculating packet loss rate p at the receiver.Finally, the system structure of the whole congestion control mechanism