基于能效的D2D模式选择和资源分配算法

D2D pattern selection and resource allocation algorithm based on energy efficiency

为了提高端到端(Device-to-Device,D2D)通信系统的能量效率,基于能效的D2D模式选择,提出一种最优的启发式资源分配算法。以D2D用户对的发送端与蜂窝用户间的距离为基准,为D2D用户对选择合适的通信模式,针对复用模式下的D2D用户对,建立以能量效率为目标的优化模型,通过设置信干噪比门限值保证用户的通信质量,利用启发式算法为复用模式下的D2D用户对分配最优复用资源。仿真结果表明,该算法能有效提高系统整体的能量效率。

In order to improve the energy efficiency of the device-to-device(D2D)communication system,an optimal heuristic resource allocation algorithm is proposed based on the D2D mode selection of energy efficiency.According to the distance between the sender of the D2D user pair and the cellular user,the appropriate communication mode is selected for the D2D user pair.For the D2D user pair under the reuse mode,an optimization model with energy efficiency as the goal is set up.The communication quality of the users is guaranteed by setting the signal-to-noise ratio threshold,and the optimal multiplexing resources are allocated for D2D user pair in multiplexing mode by the heuristic algorithm.Simulation results show that this algorithm can effectively improve the overall energy efficiency of the system.