A fuzzy multicast routing algorithm for interaction and co-operative system over the Internet

The cost and network delay are two important requirements of multicast routing, and they effect each other. According to the cost importance, users were divided into three classes. Most of users haven´t clear requirements of the cost and network delay, so we introduce the belong function of fuzzy logic into multicast routing algorithm. Through the membership function, the fuzzy multicast routing algorithm transforms the cost and network delay into a weight. The weight is the only parameter used when selecting the multicast routing. Simulations had shown that costs can be reduced by adjusting the belong function