A novel spectrum sharing scheme based on the auction theory and the mechanism of compensation and motiva-tion was proposed.Based on the simplified VCG（vickrey-clarke-groves） auction

co-operative competition model was de-veloped which was realized by introducing the cooperative relationship between secondary users and adopting the mecha-nism of monetary compensation and motivation.The novel model shows not only the automatic decision-making character-istics of non-cooperative game model

but also the fairness characteristics of the oligopoly joint model.Theoretical analysis and simulation results evaluate the system performance and verify the correctness and fairness of the proposed scheme.