高密度场景下D2D通信干扰协调的方法  

Interference coordination method for D2D communication in high density scenes

作　　者：李校林[1,2] 唐虹 李同会[1] 陈永丽 LI Xiao-lin;TANG Hong;,LI Tong-hui;CHEN Yong-li(Research Center of New Telecommunication Technology Applications,Chongqing University of Post and Telecommunications,Chongqing 400065,China;Chongqing Information Technology Designing Limited Company,Chongqing 401121,China)

机构地区：[1]重庆邮电大学通信新技术应用研究中心,重庆400065 [2]重庆信科设计有限公司,重庆401121

出　　处：《计算机工程与设计》2019年第2期336-340,共5页Computer Engineering and Design

摘　　要：为满足未来网络高接入量、高速率的特征,将D2D通信引入蜂窝网络,但这将使网络中用户间干扰情况变得复杂。针对上述问题,提出一种高密度D2D用户复用蜂窝用户资源时的干扰协调方法,主要研究联合资源分配和功率控制来提高系统整体性能的问题。在资源分配方面,保证D2D接入量的前提下最大化每条复用链路的信干噪比。在功率控制方面,提出一种自适应粒子群算法,在蜂窝用户的服务质量得到保证的前提下使得系统的整体吞吐量最优。仿真结果表明,所提算法能够有效提高D2D的接入量并保证系统整体性能。To meet the high access rate and high speed characteristics of the future network,D2D communication is introduced into the cellular network,which complicates the interference situation between users in the network.Aiming at the problems mentioned above,an interference coordination method for high-density D2D users to multiplex cellular user resources was proposed.The problem of joint resource allocation and power control to improve the overall performance of the system was studied.In terms of resource allocation,the signal-to-noise ratio of each multiplexed link was maximized on the premise of ensuring D2D access.In terms of power control,an adaptive particle swarm optimization algorithm was proposed to optimize the overall throughput of the system on the premise of guaranteeing the quality of service of cellular users.Simulation results show that the proposed algorithm can effectively improve the access of D2D and ensure the overall performance of the system.

关 键 词：D2D通信 资源分配 功率控制 服务质量 自适应粒子群算法 

分 类 号：TN929.5[电子电信—通信与信息系统]