Energy-Spectrum Efficiency Tradeoff for Video Streaming over Mobile Ad Hoc Networks

Energy-Spectrum Efficiency Tradeoff for Video Streaming over Mobile Ad Hoc Networks
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移动自组织网络视频流的能量频谱效率权衡

DOI:
10.1109/jsac.2013.130516
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发表时间:
2013-04
影响因子:
16.4
通讯作者:
Hsiao-Hwa Chen
Hsiao-Hwa Chen
中科院分区:
计算机科学1区
文献类型:
--
作者:
Liang Zhou;Rose Hu;Yi Qian;Hsiao-Hwa Chen

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在这项工作中,我们调查的能源效率(EE)和频谱效率(SE)的性能,视频流在移动的ad hoc网络开发的能量频谱感知调度(ESAS)计划。为了描述一个实际的移动的场景,我们使用了一个随机行走的移动模型,其中每个节点可以选择它的移动方向和速度随机和独立。通过严格的分析和大量的模拟,我们证明了节点的移动性是有益的EE,但不SE。这项工作的贡献是双重的:1)我们提出了一个ESAS计划的动态传输范围,显着优于以前的最小失真视频调度的联合EE和SE性能; 2)我们得出了一个可实现的EE-SE权衡范围和严格的上限/下限相对于能量频谱效率指数为各种节点的速度。我们相信,这项工作有助于摆脱洞察力的基本设计准则上建立一个能源和频谱效率的移动的视频传输系统。
In this work, we investigate the properties of energy-efficiency (EE) and spectrum-efficiency (SE) for video streaming over mobile ad hoc networks by developing an energy-spectrum-aware scheduling (ESAS) scheme. To describe a practical mobile scenario, we use a random walk mobility model, in which each node can choose its mobility direction and velocity randomly and independently. Through rigorous analysis and extensive simulations, we demonstrate that the node mobility is beneficial to EE but not to SE. The contributions of this work are twofold: 1) We propose an ESAS scheme with a dynamic transmission range, which significantly outperforms the previous minimum-distortion video scheduling in terms of joint EE and SE performance; 2) We derive an achievable EE-SE tradeoff range and a tight upper/lower bound with respect to energy-spectrum efficiency index for various node velocities. We believe that this work helps to shed insights on the fundamental design guidelines on building an energy and spectrum efficient mobile video transmission system.
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