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A Dynamic Threshold and Subsection Control TCP Slow-Start Algorithm

机译:动态阈值和分段控制TCP慢启动算法

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摘要

DSSC, a Dynamic Slow-start threshold and Subsection Control TCP Slow-start algorithm, is proposed. The key technologies of Vegas and TCP Westwood are applied to the first slow start process in DSSC, which dynamically configures TCP Slow-Start threshold and adaptively adjusts the increasing rate of TCP transmitting windows. DSSC can reach the steady state rapidly because its configuration of slow-start threshold is based on the bandwidth estimation, thus the lost packages will be limited and the entrance of congestion avoidance stage will not be too early. An important phenomenon, the TCP congestion bottleneck buffer response, is discovered, and the reason of this phenomenon is given. The result of simulation proves that this algorithm can avoid data packets loss, get to steady state quickly, and improve TCP throughput on complex network. This algorithm is robust to bottleneck buffer, adapts to WEB service, and is compatible with the present TCP protocol. Finally It is simple and practical in that it only modifies the sender of TCP.
机译:提出了动态慢启动阈值和分段控制TCP慢启动算法DSSC。 Vegas和TCP Westwood的关键技术被应用于DSSC中的第一个慢启动过程,该过程可以动态配置TCP慢启动阈值并自适应地调整TCP传输窗口的增加速率。 DSSC的慢启动阈值配置基于带宽估计,因此可以快速达到稳态,因此丢失的包将受到限制,拥塞避免阶段的进入不会太早。发现了一个重要的现象,即TCP拥塞瓶颈缓冲区响应,并给出了造成这种现象的原因。仿真结果表明,该算法可以避免数据包丢失,快速进入稳态,提高复杂网络上的TCP吞吐量。该算法对瓶颈缓冲区具有鲁棒性,适用于WEB服务,并且与当前的TCP协议兼容。最后,它简单实用,因为它仅修改TCP的发送方。

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