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Mukautuvien videon toisto algoritmien evaluointi obiilipilivipelaamisessa

机译:视频游戏中自适应视频播放算法的评估

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摘要

Mobile cloud gaming has recently gained popularity as a result of improvements in the quality of internet connections and mobile networks. Under stable conditions, current LTE networks can provide a suitable platform for the demanding requirements of mobile cloud gaming. However, since the quality of mobile network connections constantly change, the network may be unable to always provide the best possible service to all clients. Thus, the ability to adapt is necessary for a mobile cloud gaming platform in order to compensate for changing bandwidth conditions in mobile networks. One approach for doing this is to change the quality of the video stream to match the available bandwidth of the network.This thesis evaluates an adaptive streaming method implemented on a mobile cloud gaming platform called GamingAnywhere and provides an alternative approach for estimating the available bandwidth by measuring the signal strength values of a mobile device. Experimentation was conducted in a real LTE network to determine the best approach in reconfiguring the encoder of the video stream to match the bandwidth of the network. The results show that increasing the constant-rate-factor parameter of the video encoder by 12 reduces the necessary bandwidth to about half. Thus, changing this video encoder parameter provides an effective means to compensate for significant changes in the bandwidth. However, high values of the constant-rate-factor parameter can considerably reduce the quality of the video stream. Thus, the frame rate of the video should be lowered if the constant-rate-factor already has a high value.
机译:由于互联网连接和移动网络质量的提高,移动云游戏最近变得越来越流行。在稳定的条件下,当前的LTE网络可以为移动云游戏的苛刻要求提供合适的平台。但是,由于移动网络连接的质量不断变化,因此网络可能无法始终向所有客户端提供最佳服务。因此,适应能力对于移动云游戏平台而言是必需的,以便补偿移动网络中变化的带宽状况。为此,一种方法是更改​​视频流的质量以匹配网络的可用带宽。本文评估了一种在称为GamingAnywhere的移动云游戏平台上实现的自适应流方法,并提供了一种通过以下方法估算可用带宽的替代方法:测量移动设备的信号强度值。在真实的LTE网络中进行了实验,以确定重新配置视频流的编码器以匹配网络带宽的最佳方法。结果表明,将视频编码器的恒定速率因子参数增加12可使所需带宽减少到大约一半。因此,更改此视频编码器参数可提供一种有效的方式来补偿带宽的重大变化。但是,恒定速率因子参数的高值会大大降低视频流的质量。因此,如果恒定速率因子已经具有较高的值,则应降低视频的帧速率。

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  • 作者

    Karvonen Sami;

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  • 年度 2016
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  • 原文格式 PDF
  • 正文语种 en
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