Multimedia Content Adaptation for QoS Management over Heterogeneous Networks

摘要

The rapid growth of Internet has resulted in an increased heterogeneity in the network devices and connections used for information access. It has also led to a proliferation of Internet applications with diverse traffic characteristics and needs. Internet Protocol has proved to be a robust and scalable solution to handle the heterogeneity of network devices and connections. However this is achieved by keeping the network core simple with only a best effort service guarantee to the Internet traffic. Several bandwidth and delay sensitive applications can suffer severe performance degradation in the absence of traffic guarantees. In this paper, we present a mechanism for providing Quality of Service (QoS) to multimedia applications in distributed heterogeneous networks. Our approach is to adapt multimedia information content based on current client, system and network state, to meet end-to-end QoS requirements.