Quality of Experience for HTTP Adaptive Streaming Services
Quality of Experience for HTTP Adaptive Streaming Services
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DOI：
10.1109/mcom.2012.6178830
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发表时间：
2012-04-01
影响因子：
11.2
通讯作者：
Singh, Sarabjot
中科院分区：
文献类型：
--
作者：
Oyman, Ozgur;Singh, Sarabjot
消费者对移动的视频服务不断增长的需求是新的无线多媒体解决方案的演进的关键驱动力之一，需要探索新的方式来优化用于视频服务的未来无线网络，以提供增强的体验质量（QoE）。这些关键的视频增强解决方案之一是HTTP自适应流（HAS），其最近作为互联网视频交付的一种形式得到传播，并且预计在未来几年内将被更广泛地部署。作为与传统的基于推送的自适应流技术相比相对较新的技术，HAS的部署为内容开发商、服务提供商、网络运营商和设备制造商提出了新的挑战和机遇。这些重要挑战之一是开发评估方法和性能指标，以准确评估HAS服务的用户QoE，并有效地利用这些指标进行服务提供和优化网络适配。在这方面，本文提供了HAS概念的概述，并回顾了3GPP中最近标准化的QoE指标和报告框架。此外，我们提出了一个端到端的QoE的评估研究，在3GPP LTE网络上进行的HAS，并得出结论，讨论未来的挑战和机遇，在QoE优化的HAS服务。
The growing consumer demand for mobile video services is one of the key drivers of the evolution of new wireless multimedia solutions requiring exploration of new ways to optimize future wireless networks for video services towards delivering enhanced quality of experience (QoE). One of these key video enhancing solutions is HTTP adaptive streaming (HAS), which has recently been spreading as a form of Internet video delivery and is expected to be deployed more broadly over the next few years. As a relatively new technology in comparison with traditional push-based adaptive streaming techniques, deployment of HAS presents new challenges and opportunities for content developers, service providers, network operators and device manufacturers. One of these important challenges is developing evaluation methodologies and performance metrics to accurately assess user QoE for HAS services, and effectively utilizing these metrics for service provisioning and optimizing network adaptation. In that vein, this article provides an overview of HAS concepts, and reviews the recently standardized QoE metrics and reporting framework in 3GPP. Furthermore, we present an end-to-end QoE evaluation study on HAS conducted over 3GPP LTE networks and conclude with a discussion of future challenges and opportunities in QoE optimization for HAS services.