在蜂窝网络与D2D(设备到设备)网络构成的混合网络中, 针对小区内和小区间各用户之间的干扰, 研究了多小区D2D通信系统中的资源分配问题, 引入非合作博弈理论和定价机制, 设计了一种改进的带有干扰因素的效用函数对D2D用户进行功率控制, 同时考虑了公平性和系统干扰。通过验证功率控制模型中纳什均衡的存在性和唯一性, 得到D2D用户博弈之后的一个稳定状态。仿真结果表明, 所提算法不仅能提高用户的公平性, 还能提高系统的吞吐量, 提升系统性能。

In the mixed network which consists of cellular and device-to-device, there is a dynamic resources allocation problem in multi-cell D2D communication system when the interference between the users of intra-cell and inter-cell is considered. In this paper, we design a utilityfunction with interference control of the transmitted power of D2D users after introducing the non-cooperative game theory and pricingmechanism. This utilityfunction not only considers the fairness but also the interference of the system. Then we demonstrate the existence and uniqueness of Nash equilibrium in a power control model, which indicate that the D2D users can achieve a stable state after the games. Simulation results show that the proposed algorithm not only improves the fairness among the users, but also increases the throughputs and improves the performances of the system.