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Evaluation of selective aggregated session CAC for QoS provisioning in all-optical networks

All-optical WDM networks with dynamic Virtual Network Topology (VNT) control can provide effective ligthpaths-resources allocation for Next Generation Networks (NGN). However VNT can not fully provide adequate Quality of Service (QoS) as VNT control methods are not able to allocate additional resources, when problem can not be solved with the ligthpath recombination. In this paper we propose a specific selective connection admission control (CAC) algorithm AggSessAC (Aggregated Session Admission Control) for NGN networks. It provides effective traffic management while maximizing the number of accepted flows of most prior traffic class under the overutilized conditions. Performance of the proposed AggSessAC algorithm is experimentally evaluated as well as compared in simulation testbed using a traditional threshold based admission control as a benchmark. The computational simulation numerical results show promising improvement in traffic management evaluated in terms of the total revenue of serving demand.