通过对rtt的分析发现，变化的传输延迟和延迟ack将对使用RTT指示拥塞引入明显误差，从而影响dca算法的准确性。
By analyzing RTT's component, it is found that various transmitting delay and delayed ACK bring obvious errors in using RTT as the signal of network congestion, and affect DCA algorithms' veracity.
该算法用显示拥塞指示标记取代丢包机制，用于通知源端网络即将发生拥塞，采用PID控制器实现反响控制，保证系统白勺稳定性。
In this algorithm, the mechanism of dropping packet is replaced with ECN marks. It USES the PID controller as feed-backward compensation to ensure the stability of the system.
该算法用显示拥塞指示标记取代丢包机制，用于通知源端网络即将发生拥塞，采用PID控制器实现反响控制，保证系统白勺稳定性。
In this algorithm, the mechanism of dropping packet is replaced with ECN marks. It USES the PID controller as feed-backward compensation to ensure the stability of the system.
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