| dc.description.abstract | With the increasing demand for uploading in mobile networks, how to relieve the burden of mobile networks has become an inevitable network problem. Due to the enhancement of computing power and storage space of terminal devices, edge computing is known as a promising solution. Meanwhile, the research on device-to-device (D2D) communications receives much attention. Since D2D communications will face the problem of transmission efficiency between devices, the combination of game theory and D2D communications is considered. When users want to upload files such as videos and pictures to the backhaul servers, if their network conditions are not good such as congestion, poor signal and insufficient network traffic, their files cannot be uploaded smoothly. Alternatively, D2D-based data transmission techniques can be used to transfer files to other users if those have better network conditions around and can upload files to the backhaul. This way can solve the problem of file invalidation or loss due to expiration of the time limit or insufficient device capacity. In this thesis study, we design a three-layer and D2D-based
game mechanism. First of all, when a user has a file to upload to the backhaul, it will first determine whether to make a D2D demand based on the pre-match judgment. After other users receive the demand, the user will decide whether to perform this task by considering whether the self-interest obtained by performing this D2D transmission task is greater than the transmission cost. After the user agrees to perform this task, the file is successfully uploaded to the system platform. The score of the file will be used to increase the efficiency of the system platform. Finally, our study has verified that the proposed three-layer algorithm can significantly increase the efficiency of the device and platform, while reducing the transmission cost by means of simulation. | en_US |