A novel adaptive bandwidth reservation scheme for multimedia traffic in IP networks

This paper presents a distributed and scalable bandwidth reservation scheme to provide end-to-end QoS guarantees in IP networks. The basic idea of the scheme is that the joint problems of adaptive bandwidth reservation and link rearrangement(Rerouting) for multimedia traffic under the event of congestion/failure of link is taken into account by sending probing packets along selected paths to keep load balance within the core network. Not only does each router passively monitor the arriving traffic and mark the probing packets with its network status, but also makes proactive rearrangement for incoming traffic prior to QoS failure if necessary.