无线蜂窝网中用于D2D多播簇的高效多播方案  

Efficient Multicast Schemes for D2D Multicast Cluster in Wireless Cellular Network

作　　者：池凯凯[1] 汤泽锋 祝驿楠 邵奇可[1] CHI Kai-kai;TANG Ze-feng;ZHU Yi-nan;SHAO Qi-ke(School of Computer Science and Technology,Zhejiang University of Technology,Hangzhou 310023,China)

机构地区：[1]浙江工业大学计算机科学与技术学院,杭州310023

出　　处：《计算机科学》2019年第1期169-174,共6页Computer Science

基　　金：国家自然科学基金(61472367;61432015);浙江省自然科学基金(LY18F020029)资助

摘　　要：在无线蜂窝网中使用设备到设备(Device-to-Device,D2D)通信技术,可以有效卸载基站的流量。文中研究基站到某个小区域(如一幢办公楼)内多个设备的基于D2D通信的高效数据多播,提出了一种基于D2D通信的包接收率(Packet Reception Ratio,PRR)和包平均转发次数(Average Packet Retransmission times,APRT)可控的多播方案,并分别以PRR下限约束下的APRT最小化(PRR constrained APRT minimization,APRT-M)和APRT上限约束下的PRR最大化(APRT constrained PRR maximization,PRR-M)为目标,最优化中继节点最大转发次数。相比于传统方案,所提方案可显著降低BS的多播负载。APRT-M方式以尽可能降低PRR(但不小于给定值)为代价来最小化APRT,而PRR-M方式以尽可能增大APRT(但不大于给定值)为代价来最大化PRR。In wireless cellular network,using device-to-device communication technique can effectively offload the traffic of base station(BS).This paper studied the effective multicast of data from BS to multiple devices in a small area(like a building),and proposed a D2 Dcommunication based multicast scheme which is able to adjust packet reception ratio(PRR)and the average packet retransmission times(APRT).Furthermore,this paper optimized the maximal number of packet transmission retries to achieve PRRconstrained APRT minimization(APRT-M)and APRTconstrained PRR maximization(PRR-M),respectively.Compared to the traditional multicast scheme,the proposed scheme greatly reduces the multicast traffic load of BS.APRT-M minimizes APRTat the cost of reducing PRRas much as possible(but not smaller than the given threshold),whereas PRR-M maximizes PRRat the cost of increasing APRTas much as possible(but not larger than the given threshold).

关 键 词：无线蜂窝网 多播 D2D通信 包平均转发次数 包接收率 

分 类 号：TN911.2[电子电信—通信与信息系统]