A fuzzy decision based intelligent QoS multicast routing algorithm

Multicast with QoS (Quality of Service) is regarded as a promising solution for group multimedia applications in NGI (Next Generation Internet). Due to the characteristics of difficulty on exact measurement and complete expression of network parameters, a flexible QoS multicast routing algorithm based on Artificial Fish Swarm (AFS) algorithm is presented with introduction of principle of fuzzy mathematics. The corresponding model and its mathematical description are introduced. Under inaccurate information of QoS parameters and users' flexible QoS constraints, the proposed algorithm tries to find the multicast tree with maximum reliability degree and user's QoS satisfaction degree. Simulation results have shown that the proposed algorithm provides an available approach to QoS Multicast routing in networks environment with uncertain parameters.

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