IP网络中的QoS策略控制技术

The QoS Policy Control in IP Networks

一、引言随着Internet规模的不断扩大,IP网上的实时业务量也在不断增长,由于实时业务对网络传输的延时、延时抖动等特性较为敏感,当突发性高的FTP或含有图像文件的HTTP等业务量在网络上传输时,实时业务会受到影响,因此应在IP网络上导入QoS技术,以确保实时业务的通信质量。最初,QoS是与ATM技术紧密相连的,随着IP网络上实时业务的增多,人们开始研究IP网络上的QoS技术。

It is necessary to provide Quality of Service(QoS)with the continuous growing of the multimedia traffic in the Internet. In this paper,we analyze several QoS models,describe that why the QoS should be policy control in the Internet ,present the detail realization scheme of QoS policy control.