Performance evaluation of a new traffic engineering algorithm in NGN based on end-point admission control

In this paper, a new end-point admission control algorithm is proposed which helps to manage the network traffic more efficiently in NGN, where multiple classes of service are required by the applications. In this algorithm, users are allowed to temporarily use lower service classes in the routers along the connection path, whenever the requested service class is not available. The above procedure is applied provided that the end-to-end service quality level is preserved unless a lower service quality is acceptable by the application. This degradation may be temporary until the required quality level becomes available. In this way more calls can be admitted and the throughput of the links is increased. Additionally, using an appropriate rule in core routers can mitigate bandwidth stealing problem in the network while achieving nearly good utilization.