This Nowadays, along with the rapid development of Internet technology, the user’s network functionality and need for internet performance are also growing very fast. Therefore network congestion being increasingly serious and congestion control is becoming a more important issue. To detect and control congestion many queue management techniques are accessible; the extremely fundamental of them is Random Early Detection (RED). In order to enhance network performance, Quadratic Random Early Detection (QRED) is proposed. This paper gives comparative analysis between RED and QRED and shows that proposed method has improved network performance in the congested network.

如今，随着Internet技术的飞速发展，用户的网络功能和对Internet性能的需求也在迅速增长。因此，网络拥塞变得越来越严重，拥塞控制正变得越来越重要。为了检测和控制拥塞，可以使用许多队列管理技术。其中最基本的是随机早期检测（RED）。为了提高网络性能，提出了二次随机早期检测（QRED）。本文对RED和QRED进行了比较分析，表明所提出的方法在拥塞网络中提高了网络性能。