A routing mechanism to support QoS of multi-class traffic

With the development of internet, services such as multimedia service and IPTV which need QoS guarantee is emerging. There are different mechanisms to provide QoS and one of which is QoS routing. Nowadays, QoS routing protocols are mainly focus on individual traffic class and the influence among different priority traffic was little considered. This paper presents a multi-class routing mechanism to dynamic sharing resource among different class of services. We use the state of low priority flow to guide the routing selection of high priority QoS flow, while ensure the high priority flow´s QoS requirement it won´t diminish the performance of low priority flow. The simulation results show that our method is friendly to low priority traffic.