Mobile Device-to-Device Video Distribution
Mobile Device-to-Device Video Distribution
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DOI：
10.1145/2886776
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发表时间：
2016-03
期刊：
影响因子：
--
通讯作者：
Liang Zhou
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文献类型：
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作者：
Liang Zhou
由于视频流量主导了智能手机的数据流，传统的蜂窝通信面临着巨大的传输挑战。在这项工作中，我们研究了利用智能手机的存储和通信能力的移动设备到设备(D2D)视频分发。在这样的移动分布式框架中，D2D通信代表了一种有选择地存储和传输本地视频以满足他人未来需求的机会主义过程。性能通过服务时间来衡量，服务时间表示满足需求所经过的时间，每个设备的相应实现取决于视频的需求、可用性和大小。本文的主要贡献在于：(1)在实际的移动D2D视频分发场景中考虑了视频大小的影响，提出了基于有限和局部观测的视频分发的通用全局估计；(2)设计了一种无需任何中央控制器监控的纯分布式D2D视频分发方案；(3)提供了该方案的实际实现，该方案不需要知道视频的可用性、用户需求和设备移动性。数值结果表明了该方案的有效性和稳健性。
As video traffic has dominated the data flow of smartphones, traditional cellular communications face substantial transmission challenges. In this work, we study mobile device-to-device (D2D) video distribution that leverages the storage and communication capacities of smartphones. In such a mobile distributed framework, D2D communication represents an opportunistic process to selectively store and transmit local videos to meet the future demand of others. The performance is measured by the service time, which denotes the elapsed period for fulfilling the demand, and the corresponding implementation of each device depends on the video’s demand, availability, and size. The main contributions of this work lie in (1) considering the impact of video size in a practical mobile D2D video distribution scenario and proposing a general global estimation of the video distribution based on limited and local observations; (2) designing a purely distributed D2D video distribution scheme without the monitoring of any central controller; and (3) providing a practical implementation of the scheme, which does not need to know the video availability, user demand, and device mobility. Numerical results have demonstrated the efficiency and robustness of the proposed scheme.