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Battery Aware Video Delivery Techniques Using Rate Adaptation and Base Station Reconfiguration

机译:使用速率自适应和基站重新配置的电池感知视频传输技术

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With mobile video increasingly becoming an important driver of mobile device usage, the battery consumption of mobile devices will be dominated by video delivery and playback . In this paper, we develop battery efficient video download techniques that vary video download rate dynamically, including stopping video download at times, depending on mobile device buffer levels and the channel conditions experienced, to maximize battery life while ensuring no degradation in user experience. The proposed dynamic download rate adaptation techniques enable the base station to adapt the MIMO transceiver configurations to reduce battery load required by MIMO components on the mobile device. In order to further enhance battery life, we propose to utilize video bit rate adaptation, in addition to download rate adaptation and MIMO reconfiguration. The proposed battery aware bit rate adaptation techniques take into account the mobile device battery and buffer levels, and network load and channel conditions experienced, to maximize battery lifetime (hence video viewing time) while ensuring desired level of video experience (measured in terms of video quality and stalls experienced). We propose a new metric termed “video experience longevity (VEL)” which quantifies the performance of the proposed bit rate adaptation techniques in terms of video viewing time and video experience. Extensive experiments conducted under variable channel conditions and network load demonstrate that the proposed battery aware video delivery techniques can significantly outperform other video delivery techniques in terms of battery lifetime and VEL metric (for bit rate adaptation techniques) while ensuring desired level of video experience.
机译:随着移动视频日益成为移动设备使用的重要驱动因素,移动设备的电池消耗将由视频传递和播放控制。在本文中,我们开发了节电型视频下载技术,该技术可动态改变视频下载速率,包括根据移动设备的缓冲区级别和所经历的信道状况,不时停止视频下载,以最大程度地延长电池寿命,同时确保不会降低用户体验。提出的动态下载速率自适应技术使基站能够自适应MIMO收发器配置,以减少移动设备上MIMO组件所需的电池负载。为了进一步延长电池寿命,我们建议除了下载速率自适应和MIMO重新配置之外,还利用视频比特率自适应。拟议的电池感知比特率自适应技术考虑了移动设备的电池和缓冲区级别以及网络负载和所经历的信道状况,以最大程度地延长电池寿命(因此延长了视频观看时间),同时确保了所需的视频体验级别(以视频衡量)质量和经验丰富的档位)。我们提出了一种称为“视频体验寿命(VEL)”的新指标,该指标根据视频观看时间和视频体验来量化所提出的比特率自适应技术的性能。在可变信道条件和网络负载下进行的广泛实验表明,在确保所需的视频体验水平的同时,就电池寿命和VEL指标(针对比特率自适应技术)而言,建议的电池感知视频传输技术可以大大优于其他视频传输技术。

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