1QoS Routing with Topology Aggregation in Networks

In this paper, we propose a novel method for aggregating the QoS information with two independent additive metrics. To the best of our knowledge, our approach is the first study to use the area-minimization optimization, the de facto optimization problem of the QoS information aggregation. In our approach, a set of real numbers with constant size is used to approximate the supported QoS between different domains, so that the advertisement overhead and the space requirement is independent of the network size and topology, which is scalable. The simulation results show that the proposed method outperforms the existing methods