基于竞价机制的认知无线蜂窝网D2D功率分配方法

摘要

Aiming at the problem of low utilization rate of user resources and user Quality of Service (QoS)guaranteeing,this paper proposes a distributed D2D power allocation method by combining the Cognitive Radio (CR)technology and D2D technology for the wireless cellular networks.Based on the CR technology,the method can perceive the available spectrum resources and price it.Then,by changing the price to achieve the new Nash equilibrium,the iterative optimization makes the Nash equilibrium maximize the profit of the D2D pair,so as to effectively use the available spectrum resources.Experimental results show that compared with the traditional D2D communication model,the proposed method improves significantly in the data transmission efficiency and the utilization ratio of the resources in the communication system.%针对用户资源利用率低的问题,为保障用户服务质量,采用竞价机制,面向无线蜂窝网络,将认知无线电(CR)技术与D2D技术结合,提出一种分布式D2D功率分配方法.该方法基于CR技术感知到可用频谱资源并对其进行标价,通过更改标价的方式达到新的纳什均衡,迭代优化之后使得存在的纳什均衡可以最大化地增加D2D对的获利,从而高效地使用可用频谱资源.实验结果表明,与传统蜂窝模型中的D2D通信相比,该方法能提高数据的传输效率以及通信系统中资源的利用率.