Evaluation of a new end-to-end quality of service algorithm in differentiated services networks

A new end-point admission control algorithm is proposed. The proposed algorithm helps to manage the network traffic within a domain more efficiently in the next generation network where multiple classes of service are required by different applications. In the existing solutions, when a request for a new traffic is received by the network, according to the admission control mechanism the availability of resources for the requested service class is examined and the call is accepted if the resources are available. In the proposed algorithm, users´ are allowed to temporarily use lower service classes in the routers along the path, whenever the requested service class is not available, given that the end-to-end service quality level is preserved unless a lower service quality is acceptable by the application. The probe-based end-point admission control mechanism proposed here, dynamically manages the available bandwidth. In this way more calls can be admitted and the utilisation of the network is increased.