Publication Type

Conference Proceeding Article

Version

publishedVersion

Publication Date

12-2016

Abstract

Using network measurement apps has become a very effective approach to crowdsourcing WiFi network performance data. However, these apps usually measure the user-level performancemetrics instead of the network-level performance which is important for diagnosing performance problems. In this paper we report for the first time that a major source of measurement noises comes from the periodical SDIO (Secure Digital Input Output) bus sleep inside the phone. The additional latency introduced by SDIO and Power Saving Mode can inflate and unstablize network delay measurement significantly. We carefully design and implement a scheme to wake up the phone for delay measurement by sending just enough warm-up and background traffic. Our evaluation results show that the overall median delay overheads can be kept within 3ms, regardless of the actual network delay.

Keywords

Accuracy, Android, Network measurement, WiFi

Discipline

Computer Sciences | Software Engineering

Research Areas

Software and Cyber-Physical Systems

Publication

CoNEXT '16: Proceedings of the 12th International on Conference on emerging Networking EXperiments and Technologies: Irvine, California, December 12-15, 2016

First Page

497

Last Page

504

ISBN

9781450342926

Identifier

10.1145/2999572.2999595

Publisher

ACM

City or Country

New York

Additional URL

https://doi.org/10.1145/2999572.2999595

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