preset time delay 预调延时
The inventive embodiment provides a phase difference estimation method and a device. The method comprises the following steps: delaying a first signal collected by a preset delay amount;
本发明实施例提供了一种相位差估计方法及装置，以预先设定的延时量 为采集的第一路信号进行延时；
It has the following advantages: (1) RED losses packets when the average queue size exceeds the preset threshold that can control the average queue size efficiently and also confine the mean delay.
它具有下述优点：(1)RED在平均队长超过了事先设定的阈值后就丢包，有效地控制了平均队长，限制了平均时延的大小。
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