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A Lightweight Scheme for Rapid and Accurate WiFi Path Characterization

机译：一种快速准确的WiFi路径表征的轻量级方案

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摘要

WiFi serves as one of the key mechanisms for wireless access for mobile devices whether at home, on travel, or during normal day-to-day activities. Unfortunately, the perceived high bandwidth and low cost of WiFi is often tempered with varying degrees of quality. Compounding this further, existing techniques for assessing network performance are often expensive in terms of time, bandwidth, and energy making them ill-suited for widespread, longitudinal deployment. In this paper, we propose Fast Mobile Network Characterization (FMNC) to address this shortcoming. FMNC uses sliced, structured, and reordered packet sequences along with an awareness of frame aggregation to rapidly characterize available bandwidth. FMNC does this within the context of a single HTTP GET, consuming less than 100 KB on the downlink with resolution of the path characteristics typically occurring in under 250 ms. We demonstrate the performance of FMNC through extensive lab experiments under a variety of configuration scenarios.
机译：WiFi是用于移动设备无论是家庭，旅行还是在正常日常活动期间的关键机制之一。不幸的是，WiFi的感知高带宽和低成本通常以不同程度的质量回火。进一步复合，用于评估网络性能的现有技术在时间，带宽和能量方面通常是昂贵的，使其不适合广泛的纵向部署。在本文中，我们提出了快速移动网络表征（FMNC）来解决这种缺点。 FMNC使用切片，结构化和重新排序的数据包序列以及对帧聚合的意识，以便快速表征可用带宽。 FMNC在单个HTTP GET的上下文中执行此操作，在下行链路上消耗小于100 kB，分辨率通常发生在250毫秒以下的路径特性。我们在各种配置方案下展示了FMNC通过广泛的实验室实验的表现。

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