First,it calculates actual RTT and smallest RTT(base_rtt) based on grouping segments by size. While updating congestion window size and setting retransmission timer,the improved Vegas employs the RTT and base_rtt measured for segments belong to the same group.
首先对发送分组根据长度进行分类,分别计算各长度类别的“往返时间”(RTT)和RTT最小值(base_rtt);在更新发送窗口以及设置重传定时器时,根据分组长度选择属于同一长度范围的RTT和base_rtt值作为输入参数。
参考来源 - TCP Vegas拥塞控制机制的改进 in C·2,447,543篇论文数据，部分数据来源于NoteExpress
A segment is sent with sequence 'b' and the retransmission timer is started.
使用序列' b '发送一个分段，并且启动重新传输计时器。
You stop the retransmission timer by removing the timer from the timer wheel.
通过将计时器从计时器轮中删除，您可以停止重新传输计时器。
A timer handling routine is called to process the retransmission timer expiry.
调用一个计时器处理例程以处理重新传输计时器的计时到期。
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