Connectionless Quality-of-Service Routing Framework

Next generation networks call for novel network architectures in order to support QoS-oriented applications. However, existing QoS architectures mostly suffer from the unscalability problem. In this paper we propose a novel connectionless QoS routing framework for high-speed core networks. Unlike traditional QoS architectures, neither resource reservation nor per-flow management exists in the proposed routing framework, so it has good scalability. In this framework, QoS constraints are carried by every packet and routing decisions are made hop by hop at the packet level. We also establish an analytic QoS model and a simulation model to acquire performance evaluation for the connectionless QoS routing framework. Both the analysis and simulations show that this framework achieves satisfying performance for any underlying type of QoS-oriented services