Modeling Gaming QoE: Towards the Impact of Frame Rate and Bit Rate on Cloud Gaming
Modeling Gaming QoE: Towards the Impact of Frame Rate and Bit Rate on Cloud Gaming
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DOI：
10.1109/qomex.2018.8463416
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发表时间：
2018-05
期刊：
影响因子：
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通讯作者：
Saman Zadtootaghaj;Steven Schmidt;Sebastian Möller
中科院分区：
文献类型：
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作者：
Saman Zadtootaghaj;Steven Schmidt;Sebastian Möller
流媒体服务的最新进展和即将到来的新一代移动的网络5G，提供低端到端延迟以及高带宽，为云游戏应用带来了光明的未来。与传统游戏服务相反，云游戏不仅受到客户端系统因素的影响，而且还受到网络，服务器规格和编码参数的显著影响。在本文中，我们提出了一个主观实验的结果，旨在调查的影响因素，帧速率和比特率，对游戏体验质量。结果表明，一个可接受的视频质量和交互质量之间的权衡存在。在非常低的比特率的情况下，降低帧速率可以提高视频质量，而在某些时候，抖动变得明显，这会对视频质量产生负面影响，并且对游戏的控制将大大降低。此外，即使在游戏社区中期望60 fps的帧速率，在60 fps和25 fps之间没有发现质量评级以及性能评级的显著差异。因此，这将是非常有价值的服务提供商找到一个理想的策略，这个问题。此外，我们还研究了视频编码对游戏体验维度的影响。最后，第一次尝试模型的两个影响因素对整体质量的影响。
Recent advances of streaming services and the upcoming new generation of mobile networks, 5G, offering low end-to-end delay as well as high bandwidths, promise a bright future for cloud gaming applications. Cloud gaming, in the contrary to traditional gaming services, suffers not only from system factors on the client, but is also affected significantly by the network, server specification and encoding parameters. In this paper, we present the results of a subjective experiment aiming to investigate the impact of two influencing factors, frame rate and bit rate, on the gaming Quality of Experience. The results reveal that a trade-off between an acceptable video quality and interaction quality exists. In case of very low bit rates, lowering the frame rate can improve the video quality while at some point, jerkiness becomes visible which affects the video quality negatively and the control over the game will be strongly reduced. Furthermore, even though in the gaming community a frame rate of 60 fps is desired, no significant difference for quality ratings, as well as performance ratings, was found between 60 fps and 25 fps. Therefore, it would be highly valuable for service providers to find an ideal strategy for this issue. In addition, we investigate the impact of video encoding on gaming experience dimensions. Finally, a first attempt to model the impact of two influencing factors on overall quality will be presented.