面向蜂窝网络的D2D多播通信的分簇和中继选择方法  

Clustering and Relay Selection Method for Cellular Network-oriented D2D Multicast Communication

作　　者：李旭杰[1,2,3] 刘春燕 孙颖 LI Xujie;LIU Chunyan;SUN Ying(College of Computer and Information,Hohai University,Nanjing 210098,China;Key Laboratory for Wireless Sensor Network and Communication,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China;Institute of Ocean and Offshore Engineering,Hohai University(Nantong),Nantong 226300,China;School of Information Engineering,Jiangsu Open University,Nanjing 210017,China)

机构地区：[1]河海大学计算机与信息学院,南京210098 [2]中国科学院上海微系统与信息技术研究所无线传感网与通信重点实验室,上海200050 [3]南通河海大学海洋与近海工程研究院,南通226300 [4]江苏开放大学信息工程学院,南京210017

出　　处：《电子与信息学报》2023年第2期488-496,共9页Journal of Electronics & Information Technology

基　　金：江苏省教育厅未来网络科研基金(FNSRFP-2021-YB-7);中国科学院无线传感网与通信重点实验室开放课题(20190914);江苏省水利科技项目(2020028);南通市科技项目(MS22021042)。

摘　　要：传统蜂窝网络中,信道衰减的随机性和不确定性导致小区边缘用户的接收性能很差,尤其是面向视频传输等速率要求较高时其弊端更加凸显。D2D通信因其配置灵活性可作为传统蜂窝网络架构的有利补充,能有效改善边缘用户的性能。该文针对D2D通信的多播传输,分析了系统最小时延成本下的中继数量和分簇算法,提出一种基于分簇和中继选择的低时延D2D多播方案。该方案可以自适应选择多播重传中的中继的数量和中继节点到基站的距离,同时给出最优的带宽资源分配机制。仿真结果表明,与其他方案相比,所提方法能有效减少系统时延,提高边缘用户体验和系统性能。In traditional cellular networks, the randomness and uncertainty of channel attenuation lead to poor reception performance for cell-edge users, especially for video transmission and other high-speed requirements,its drawbacks are more prominent. D2D(Device-to-Device) communication can be used as a beneficial supplement to the traditional cellular network architecture because of its configuration flexibility, and the performance of edge users can be improved effectively. Aiming at the multicast transmission of D2D communication, the number of relays and the clustering algorithm are analyzed under the minimum delay cost of the system, and a low-latency D2D multicast scheme is proposed based on clustering and relay selection.This scheme can adaptively select the number of relays in the multicast retransmission and the distance from the cluster center to the base station, and at the same time, it provides an optimal bandwidth resource allocation mechanism. The simulation results show that compared with other schemes, the proposed strategy can effectively reduce the system delay and improve the edge user experience and system performance.

关 键 词：D2D通信 多播 分簇 

分 类 号：TN929.5[电子电信—通信与信息系统]