OCP-A: an efficient QoS control scheme for real time multimedia communications

A major goal of current integrated networks is to provide transmission services to diversified applications with different QoS (quality of service) requirements. Due to the increasing dynamics of the traffic introduced by multimedia applications, dynamic and flexible QoS control is needed to ensure both QoS satisfaction and resource efficiency. We present an efficient quality assurance scheme to satisfy a diversified combination of delay bound and loss ratio requirements by dynamically adjusting the resource allocation. It is a simple, general QoS control scheme which can be used on a variety of real-time multimedia sources. The scheme is evaluated in extensive simulation studies using real MPEG video sources and is shown to be superior to static resource allocation in terms of efficiency, fairness, and flexibility.