异构云无线接入网场景下D2D通信资源共享与分配  

D2D Communication Resource Sharing and Allocation in Heterogeneous Cloud Wireless Access Network Scenario

作　　者：赵家乐 李双志[1] 孙俊[2] 宗景杰 穆晓敏[1] ZHAO Jiale;LI Shuangzhi;SUN Jun;ZONG Jingjie;MU Xiaomin(School of Information Engineering,Zhengzhou University,Zhengzhou 450001,China;School of Electronic Information,Zhongyuan University of Technology,Zhengzhou 450007,China)

机构地区：[1]郑州大学信息工程学院,郑州450001 [2]中原工学院电子信息学院,郑州450007

出　　处：《电讯技术》2020年第5期572-578,共7页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(61901416,91438101);国家自然科学重大项目(2017ZX03001001-004);河南省科技攻关计划项目(192102210090)。

摘　　要：针对异构云无线接入网中的前向链路受限问题,提出了一种基于干扰阈值的设备到设备(Device-to-Device,D2D)多用户分簇方案,并对系统信道和功率资源的分配进行优化。首先根据D2D用户之间的干扰级别,利用着色图理论对多用户进行分簇;然后,在满足D2D用户和蜂窝用户服务质量约束下,建立了基于D2D用户和速率最大化的资源分配模型,并进一步采用二分法对已分簇的D2D用户进行功率优化分配。仿真实验结果验证了所提方案相比传统方案,系统频谱利用率提高了55%以上。For the restriction of forward link in heterogeneous cloud radio access network( H-CRAN),a clustering scheme for device-to-device( D2D) communication and a joint optimization framework for channel and power resources are proposed.D2D users are first clustered with the graph coloring theory.Then,under the constraint of the quality of service( QoS) for D2D users and cellular users,a resource allocation model is established to maximize the sum rate of D2D users.Finally,a power allocation scheme within the clustered D2D users is further built by the bisection method.The simulation results show that the proposed resource sharing and allocation scheme can improve the system spectrum utilization by more than 55%compared with the traditional scheme.

关 键 词：无线异构网 D2D通信 功率分配 资源共享 

分 类 号：TN911[电子电信—通信与信息系统]