Abstract
Network Capacity demand in cellular networks is explosively growing. The large Macrocells in combination with Small cells, which are named Heterogeneous Cellular Networks (HetNets), are introduced to increase network capacity. However, how to fairly assign spectrum to Small cells is neglected in HetNets. A heuristic fair spectrum assignment game (FSAG) is proposed to solve this problem by maximizing the minimum user data rate. FSAG is a distributed and game theoretical algorithm to t the self-organizing capability of HetNets. We conduct simulations for evaluating the stable state of distributed FSAG can be achieved in few rounds even in high Small cell density scenario. Moreover, simulation results present the minimum user data rate is close to the optimal solution by centralized calculating and the minimal user data rate is never zero, which means all users never starvation, while the average user data rate among all users in the network is not sacrificed.