Network delay measurement optimization method in software definition network environment

A network delay measurement optimization method comprises: employing network delays through recent n-times measurement to form a delay set X, subtracting the mean value of each element from each element in the delay set X to form a difference sequence set Y, employing elements in the set Y to obtain a fitting trigonometric function, finally obtaining a time interval being in direct proportion to the last measurement period and being in inverse proportion to the variance of the elements in the set Y, namely the network delay changing is smaller in the set X, the next measurement time interval is longer, the network delay changing is larger in the X, the next measurement time interval should be shorter, and therefore the accuracy of the network delay measurement can be guaranteed and improved, and the network resource consumption occupied by the measurement delay can be reduced. 本发明的网络延迟测量优化方法，首先利用最近n次测量的网络延迟构成延迟集合X，再将延迟集合X中每个元素减去其平均值构成差值序列集合Y，利用集合Y中的元素得到拟合三角函数，最后得到与最后次测量周期成正比与集合Y中元素的方差成反比时间间隔，即集合X中网络延迟变化越小，则下次