Abstract:A mathematic model for assigning fixed channels is established with the help of analyzing the cellular system. Transfer strategy and pheromone strategy are improved based on the ACO algorithm. Meanwhile, the new algorithm has a faster convergence speed and also can prevent partial optimum effectively. In a signal channel assignment, the best schemes of various (K1,K2) constrains are obtained. For the graphs of (K,K) constrains, the best infinite schemes with the different channels such as the channel of 1 iK are given. As for a multi-channel assignment, an acceptable result is obtained solving the 21 district Philadelphia benchmark. The simulation results obtained by actual graphs, is proven more efficient in saving channel resources and saving calculating time.