A Study on Application-Aware Scheduling in Wireless Networks
A Study on Application-Aware Scheduling in Wireless Networks
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DOI：
10.1109/tmc.2016.2613529
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发表时间：
2017-07-01
影响因子：
7.9
通讯作者：
Gao, Hong
中科院分区：
文献类型：
--
作者：
Zheng, Xu;Cai, Zhipeng;Gao, Hong
在过去的十年中，无线网络的设计经历了从服务质量（QoS）到体验质量（QoE）的巨大变化，尤其是在链路调度方面。在许多应用中，终端用户更关心单个任务的传输质量而不是链路的质量，其中任务可以指一段音乐、视频等，并且可以包括许多分组。本文提出了一种新的网络模型，旨在通过将调度问题推到任务层来改善用户体验。设计了一种新的QoE要求来概括任务的QoS要求，即比率要求。在此设计之后，提出了相应的调度策略，以捕获每个任务，然后达到应用感知的传输分配。我们从理论上分析了调度策略的性能，并讨论了最佳解决方案的设计和QoE要求的影响。最后，仿真结果表明，我们的调度策略可以显着提高QoE。
The past decade witnessed the dramatic evolution from Quality of Service (QoS) to Quality of Experience (QoE) in the design of wireless networks, especially on the aspect of link scheduling. In many applications, end users are concerned more about transmission quality of an individual task rather than the quality of a link, where a task may refer to a piece of music, video, etc. and may include many packets. This paper proposes a new network model aiming at improving user experience by pushing the scheduling problem to the task layer. A novel QoE requirement is designed to generalize the QoS requirements of a task, which is the ratio requirement. Following this design, a corresponding scheduling policy is proposed to capture it for each task and then reach an application-aware transmission allocation. We theoretically analyze the performance of the scheduling policy, and discuss the design of an optimal solution and the impact of the QoE requirements. Finally, the simulation results indicate that our scheduling policy can significantly improve QoE.