A large-scale analysis of deployed traffic differentiation practices
A large-scale analysis of deployed traffic differentiation practices
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DOI：
10.1145/3341302.3342092
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发表时间：
2019-08
期刊：
影响因子：
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通讯作者：
Fangfan Li;Arian Akhavan Niaki;D. Choffnes;Phillipa Gill;A. Mislove
中科院分区：
文献类型：
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作者：
Fangfan Li;Arian Akhavan Niaki;D. Choffnes;Phillipa Gill;A. Mislove
在过去的十年里，网络中立性一直是公众争论的主题。尽管对内容提供商和用户有潜在的影响，但目前缺乏工具或数据供利益相关者独立审计网络提供商的网络中立政策。在这项工作中，我们通过对部署在运营网络中的基于内容的流量差异化策略进行为期一年的研究来解决这一问题，研究结果来自183个国家/地区的2,735家互联网服务提供商的126,249名用户进行的1,045,413次众包测量。我们开发并评估了一种方法，该方法结合了单个设备的测量结果，形成了高可信度、统计上显著的差异化实践推断，包括固定速率带宽限制（即节流）和延迟节流实践。使用这种方法，我们确定了蜂窝和WiFi网络的差异，包括7个国家的30家互联网服务提供商。我们还调查了几个流行的视频流提供商的节流实践对视频流分辨率的影响。
Net neutrality has been the subject of considerable public debate over the past decade. Despite the potential impact on content providers and users, there is currently a lack of tools or data for stakeholders to independently audit the net neutrality policies of network providers. In this work, we address this issue by conducting a one-year study of content-based traffic differentiation policies deployed in operational networks, using results from 1,045,413 crowdsourced measurements conducted by 126,249 users across 2,735 ISPs in 183 countries/regions. We develop and evaluate a methodology that combines individual per-device measurements to form high-confidence, statistically significant inferences of differentiation practices, including fixed-rate bandwidth limits (i.e., throttling) and delayed throttling practices. Using this approach, we identify differentiation in both cellular and WiFi networks, comprising 30 ISPs in 7 countries. We also investigate the impact of throttling practices on video streaming resolution for several popular video streaming providers.