An Experimental Study on Wi-Fi Ad-Hoc Mode for Mobile Device-to-Device Video Delivery

Bo Xing, K. Seada, N. Venkatasubramanian
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引用次数: 35

Abstract

The demand for video content is continuously increasing as video sharing on the Internet is becoming enormously popular recently. This demand, with its high bandwidth requirements, has a considerable impact on the load of the network infrastructure. As more users access videos from their mobile devices, the load on the current wireless infrastructure (which has limited capacity) will be even more significant. Based on observations from many local video sharing scenarios, in this paper, we study the tradeoffs of using Wi-Fi ad-hoc mode versus infrastructure mode for video streaming between adjacent devices. We thus show the potential of direct device-to-device communication as a way to reduce the load on the wireless infrastructure and to improve user experiences. Setting up experiments for Wi-Fi devices connected in ad-hoc mode, we collect measurements for various video streaming scenarios and compare them to the case where the devices are connected through access points. The results show the improvements in latency, jitter and loss rate. More importantly, the results show that the performance in direct device-to-device streaming is much more stable in contrast to the access point case, where different factors affect the performance causing widely unpredictable qualities.
移动设备对设备视频传输的Wi-Fi Ad-Hoc模式实验研究
近年来,随着互联网视频分享的普及,人们对视频内容的需求不断增加。这种需求对带宽的要求很高,对网络基础设施的负载有相当大的影响。随着越来越多的用户从他们的移动设备上访问视频,当前无线基础设施(容量有限)的负载将更加显著。基于对许多本地视频共享场景的观察,在本文中,我们研究了在相邻设备之间使用Wi-Fi自组织模式与基础设施模式进行视频流的权衡。因此,我们展示了直接设备到设备通信作为一种减少无线基础设施负载和改善用户体验的方式的潜力。我们对以ad-hoc模式连接的Wi-Fi设备进行了实验,收集了各种视频流场景的测量数据,并将其与设备通过接入点连接的情况进行了比较。结果表明,该方法在延迟、抖动和丢包率等方面均有改善。更重要的是,结果表明,与接入点情况相比,直接设备到设备流的性能要稳定得多,接入点情况下,不同的因素会影响性能,导致广泛不可预测的质量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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