A QoS negotiable service framework for multimedia services connected through subscriber networks

This paper presents a novel QoS negotiable service framework (QNSF) to provide QoS based multi-room application services. The QNSF provides service bandwidth guaranteed services as well as priority based QoS services on home server based Ethernet networks. The QNSF works on Ethernet networks and legacy network devices. Although the QNSF can support priority based QoS services, in order to provide high quality multimedia services from subscriber networks, our scheme supports the service bandwidth guaranteed services because different home applications from multi-rooms compete for limited bandwidth resources. When application session setup begins, our QNSF negotiates a QoS service level of applications through QoS client APIs. Application services can perform any number of dynamic QoS negotiations before the service starts. Thus, the QNSF can provide well adapted QoS providing service to home multimedia applications. The QNSF consists of some functional blocks. A QoS client module defines QoS negotiation APIs for home service applications that require QoS negotiations. QoS proxy, QoS manager, and traffic monitor modules support service based QoS provision functions like dynamic bandwidth negotiation, QoS admission control, service profile based rate control, and adaptive parameter mapping. Packet classifier, class marker, and best effort traffic controller modules enable dynamic input traffic classification and support policy based rate controls. Using dynamic resource reservation and QoS negotiations, our scheme provides efficient QoS guaranteed services for the multimedia traffics from subscribe networks, such as high quality multimedia service. Our prototype implementation shows the feasibility of the QNSF for the provisioning QoS based application services in multi-room home networks