国家重点研发计划项目(2018YFB1700100); CERNET创新工程项目(NGII20190801); 中央高校基本科研专项资金 (DUT21LAB115)
The computation offloading problem of Multi-access Edge Computing (MEC) has become one of the hot topics in current research. The current computation offloading scheme only considers the computation offloading problem in the Cloud,Edge and End structures, but does not consider the attributes of the public and private clouds. In this paper, a novel computation offloading scheme is proposed, which considers the relationship between public cloud and private cloud in Edge Computing, and uses public cloud as a supplement to private cloud resources. In this scheme, the insufficient computing power caused by the limitations of private cloud resource can be alleviated; And a two-layer Stackelberg game is established to solve the computation offloading problem. The optimal strategies of each player are obtained, and the existence and uniqueness of the Nash equilibrium solution of the two-layer game are proved. The simulation results and analysis also show that the feasibility of computation offloading scheme based on the two-layer Stackelberg game is proved, and the computation offloading scheme based on the two-layer Stackelberg game is more efficient and more suitable for Edge Computing environment than the computation offloading scheme based on single-layer Stackelberg game.