QoE Management made uneasy: The case of Cloud Gaming
QoE Management made uneasy: The case of Cloud Gaming
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QoE 管理令人不安：云游戏案例
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
R. Irmer
中科院分区：
文献类型：
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作者：
A. Sackl;R. Schatz;T. Hossfeld;Florian Metzger;D. Lister;R. Irmer
在本文中，我们使用云游戏作为未来服务的代表性范例，讨论了未来网络中QoE管理的挑战和需求。我们特别强调了QoE管理的固有困难，例如单个应用程序类别中QoE敏感性和资源需求方面的极端变化。在此背景下，基于云游戏相关QoE工作中相互矛盾的结果，我们分析了延迟、延迟检测和QoE之间的关系，并讨论了可能对用户延迟敏感性的影响。我们还展示了一项实验室云游戏QoE研究的结果，该研究表明，即使是很小的额外延迟也会对QoE产生明显的影响，而另一方面，用户可以令人惊讶地容忍更高的延迟。事实上，观察到的QoE敏感度很大程度上取决于实际使用的游戏，这代表了云游戏的典型特征，也是QoE管理的关键挑战。基于我们的研究结果，我们讨论了QoE管理如何需要考虑用户和应用程序相关因素的识别多样性，远远超出仅仅满足静态网络QoS需求。通过使用延迟管理的示例案例，我们认为云游戏等新兴服务的QoE管理需要一个整体的端到端方法以及应用程序和网络之间的结构化信息交换，这两者都是未来互联网基础设施的基本特征。
In this paper we discuss challenges and requirements for QoE Management in future networks using Cloud Gaming as representative paradigm for upcoming services. In particular, we highlight inherent difficulties for QoE Management such as an extreme variation in terms of QoE sensitivity and resource requirements within a single application category. In this context, motivated by contradicting results in related Cloud Gaming QoE work, we analyze the relationships between delay, latency detection and QoE and discuss possible influences on user delay-sensitivity. We also present the results of a laboratory cloud gaming QoE study showing that even small additional delays can have a visible QoE impact while on the other hand users can be surprisingly tolerant to higher delays. Indeed, the observed QoE sensitivity strongly depends on which game is actually used, representing a typical characteristic of cloud gaming and a key challenge for QoE Management. Based on our results, we discuss how QoE Management needs to take the identified diversity of user- and application-related factors into account, reaching far beyond just satisfying static network QoS demands. Using the exemplary case of latency management, we argue that QoE Management for emerging services like Cloud Gaming requires a holistic end-to-end approach as well as a structured information exchange between applications and networks, both essential features of Future Internet infrastructures.