IXA Architecture-based Access Gateway QoS Design And Implementation

With the development of IP network and related technology, everything over IP is no longer a slogan, but an irrefutable fact. From the preliminary attempt of VOIP , to the video-conference , IPTV ,and even mobil-business, have already or soon been able to run over IP. However today's IP network faces the unprecedented challenges, one of which is QoS.QoS is a technology of traffic management. It mainly has three function. Firstly it provides a distinguishing service for those applications which have a special request of delivering quality, lower delay and tremble. Secondly it decreases congestion by appropriate resources allocation and traffic control. Thirdly it reduces the influence to certain service when the congestion occurs.By the background of the CDMA2000 packet data area, this text does the detailed research on the QoS of the gateway. It mainly has five part. Part one, the background of QoS. Part tow, the key technique of the system. Part three, the system framework. Part four, the detail of system. Part five, the test system.The system is built on the IXP2400 ,a product of Intel. There are tow basic ways of research. One is QoS theory. The other is the Intel IXA framework.