RSVP在数字视频网络传输QoS保障中的应用研究

随着网络数字视频的广泛应用，对实时性的要求也变得越来越紧迫。这些应用程序要求因特网协议(IP)能够提供有保证的带宽、较高的优先级以及较低的包丢失率。为了达到这一要求，Internet工程任务组(IETF)开发了一套用于因特网的综合服务的协议和标准。通过资源预留协议(RSVP)来管理网络资源分配以提供不同级别的服务。讨论了怎样将该协议与典型的数字视频网络传输方案相结合，以使现有支持服务质量(QoS)的网络可以提供更为稳定流畅的传输效果。

Research on application of RSVP in QoS guarantee of digital video tranportation

There is an emergence of Internet applications that have realtime requirements like some digital video applications. These applications require IP to support guaranteed bandwidth, higher priority and lower packet loss rate. To address this, the Internet Engineering Task Force (IETF) is developed a set of protocols and standards for integrated services on the internet. Using RSVP to manage the allocation of network resources in order to provide different levels of service is a topic of great interest to service providers. How RSVP in conjunction with typical digital video transportation scheme can provide a more stable and fluent performance on current QoS-supported network is discussed.