Quality of Service for Internet Multimedia

Preface

Today, the Internet carries increasingly diverse applications that require different levels of network quality of service (QoS). In particular, continuous media (CM) applications have much more stringent QoS requirements than traditional Transmission Control Protocol (TCP)-based applications. Because we face a variety of application requirements, Internet QoS will remain a challenging task even if bandwidth becomes abundant and cheap.

To provide an appropriate level of service quality, the current best-effort Internet must be supplemented with the ability to distinguish traffic from different service classes and provide different levels of service for these classes. The differentiated services (DiffServ, or DS) framework of the Internet ...