《计算机应用研究》|Application Research of Computers

用户需求感知的D2D视频分发机制

Demand-aware D2D video distribution mechanism

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作者 寇兰,刘彪,黄宏程
机构 重庆邮电大学 通信与信息工程学院,重庆 400065
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文章编号 1001-3695(2019)06-052-1849-05
DOI 10.19734/j.issn.1001-3695.2018.01.0011
摘要 针对目前D2D多播内容分发机制因冗余传输过高而导致簇头节点能量效率以及系统频谱效率低的问题,提出了一种基于用户需求感知的D2D视频分发机制。通过对用户视频服务请求进行预测,在为服务请求用户分发视频的同时将视频推送给潜在服务用户。首先,根据用户的兴趣、视频的流行度以及用户设备的剩余能量等估算出潜在服务用户接收视频推送的意愿;其次,提出视频分发服务效用值度量来衡量视频分发服务的价值,并对最优化簇头能量效率问题进行建模;最后,提出最优化簇头能量效率的D2D视频分发机制。实验结果表明所提出的D2D视频分发机制相较于传统分发机制其簇头的能量效率及系统吞吐量有着明显的优势。
关键词 终端直通通信; 内容分发; 需求感知; 能量效率; 吞吐量
基金项目 重庆市科委基础与前沿研究项目(cstc2014jcyjA40039)
本文URL http://www.arocmag.com/article/01-2019-06-052.html
英文标题 Demand-aware D2D video distribution mechanism
作者英文名 Kou Lan, Liu Biao, Huang Hongcheng
机构英文名 School of Communication & Information Engineering,Chongqing University of Posts & Telecommunications,Chongqing 400065,China
英文摘要 In view of the current D2D multicast content delivery mechanism has a large amount of transmission redundancy, lead to low energy efficiency and low spectrum efficiency. This paper proposed a novel demand-aware D2D video distribution mechanism. By predicting users' video service requests, it pushed the video to potential service users while distributing video for service request users. Firstly, it estimated the willingness of potential service users to accept video push based on the users' interests, the popularity of the video and the residual-energy of the users' devices. Secondly, it proposed the utility measure of video distribution service to measure the value of video distribution service, and modeled the issue on energy efficiency of the optimal cluster heads. Finally, this paper proposed a D2D video distribution mechanism that optimized the energy efficiency of cluster heads. Simulation results show that the proposed mechanism is superior to the traditional ones with regard to the energy efficiency of the cluster head and system throughput.
英文关键词 D2D; content distribution; demand-aware; energy efficiency; throughput
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收稿日期 2018/1/17
修回日期 2018/3/12
页码 1849-1853
中图分类号 TN929.5
文献标志码 A