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Fairness in packets scheduling in routers is a fundamental objective for designing a scheduler. The magnificent WFQ, which approximate GPS to a distinctive level of accuracy, attempts to allocate the bandwidth fairly among the flows according to maxmin principle and to source-destination fashion. Nevertheless, referring to Rawls' method for theory of justice, ??rank alternatives to the worst possible...
This article proposes a new model to ensure for each application a better quality of service (QoS). The proposed model is called periodic multi-step routing model or PEMS. It is built by integration of traffic engineering based on MPLS and differentiation of traffic depending on the class as proposed by DiffServ. Indeed, many models for optimizing QoS routing use a single specific metric because mixing...
Cognitive radio network has received increasing attention in recent few years. Cognitive radio network is viewed as a novel network for improving the utilization of a precious natural resource: the radio electromagnetic spectrum. This paper first gives a general overview of the background and concept of cognitive radio network. Then we focus on the routing algorithm based on the QoS requirement. In...
Admission control is a key management function in wireless networks, particularly wireless mesh networks (WMNs), in order to support multimedia applications that require quality of service (QoS) guarantees. Even using state of the art schemes to provide QoS, if the amount of traffic in the network is allowed to increase in an uncontrolled manner, network performance will deteriorate significantly...
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