QoS Multicasting in Networks with Asymmetric Links

One network model with asymmetric links is established by research of quality of service(QoS)guaranteed multicast routing problems. With the aim of balancing the loads of networks, a new multicast routing genetic algorithm based bandwidth and delay constraints (BDMGA) is presented. The convergence analysis and simulation results over random networks show that BDMGA achieves its good performance in balancing traffic, which could avoid link blocking and enhance the network behavior efficiently. Moreover, the proposed algorithm can generate multicast tree with lower cost in any networks and can also achieve optimal multicast tree rapidly in small network.