Research on Spectrum Allocation Strategy Based on Stackelberg Game in Ultra Dense Network

As one of the key technologies of 5G, ultra dense network (UDN), densely distributed small base stations has brought about an increase in system capacity and transmission rate, and has become a research hotspot in recent years. In order to compensate for the severe co-layer and cross-layer interference caused by UDN, clustering small cells first and Stackelberg game is applied to spectrum allocation, and the Nash equilibrium is solved to obtain a spectrum allocation strategy with less interference. The performance of spectrum allocation algorithm based on Stackelberg game (SASG) is simulated and the simulation results verify the performance of SASG, showing that SASG can effectively improve the system throughput under limited spectrum resources.