Abstract: Aiming at the problem that current device to device (D2D) communication resource sharing algorithm could not solve the contradiction between resource utilization and channel interference, in order to improve the performance of D2D communication, we designed a D2D communication resource
 sharing algorithm based on game theory. The algorithm took the communication system throughput as the goal. By introducing game theory, the communication resource sharing among various users could be realized, so that resources could be reasonably allocated among communication links, interference between channels could be reduced, and communication quality of cellular link could be improved. Compared with the classical D2D communication resource sharing algorithm. The result shows the proposed algorithm obviously improves the quality of D2D communication, improves the channel utilization, and improves the total system throughput greatly.

Key words: channel utilization, game theory, total system throughput, device to device communication, channel interference