Research on multicast QoS routing under uncertain information

QoS multicast routing is one of the important components in order to guarantee network QoS.But the network state information is uncertain inherently,so it is necessary to research the influence of the uncertainty on QoS multicast routing.The distribution of bandwidth and delay is assumed randomly variable,and the chance constrained programming model is proposed.Parallel Genetic Algorithm (PGA) is used to solve the model,and the simulation results show that the proposed algorithm is able to find a better solution,fast convergence speed and high reliability.It can meet the real-time requirement in multimedia communication networks.