Quality of service routing network and performance evaluation

Abstract

In order to provide QoS guarantees for data transmission, we developed the QoS router, which can seek feasible paths subject to QoS requirements for the IP packets. However, the QoS router cannot be deployed extensively in the Internet because the current routers need to be modified. Based on the overlay network, we propose QoS Routing Network (QOSRN), which consists of fewer QoS routers and virtual links. We go further by researching into the impact of the arrangement of QoS routers upon the performance of QOSRN. Extensive simulations show that by adopting reasonable arrangement scheme, e.g. deploying border routers first, QOSRN achieves high performance without increasing the load of the network excessively. The research result can give some guidance to the construction of the overlay network that provides QoS guarantees. © Springer-Verlag Berlin Heidelberg 2005.