QOS multicast routing algorithm with multiple constraints based on GA

This paper proposes an algorithm for QoS multicast routing with multiple constraints using genetic algorithm. It considers multiple QoS parameters such as delay, bandwidth, jitter and losing rate. The algorithm utilizes the tree-coding to save the encoding space and cut down the decoding operation, designs the improved crossover and the mutation operations based on the tree-coding. The experiment results show that the proposed algorithm can solve quickly one multicast tree satisfied multiple QoS constraints, furthermore the globe convergence speed cannot be slowed down with the increase of network scale.