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PCach: The Case for Pre-Caching your Mobile Data

Jaffrès-Runser, Katia and Jakllari, Gentian PCach: The Case for Pre-Caching your Mobile Data. (2018) In: 43rd IEEE Conference on Local Computer Networks (LCN), 1 October 2018 - 4 October 2018 (Chicago, United States).

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Official URL: DOI:10.1109/LCN.2018.8638100

Abstract

We present PCach, a smartphone-based approach for relieving the congestion in cellular network resulting from the exponential growth in mobile data traffic. The basic idea underlying PCach is simple: use WiFi to proactively cache content on the smartphone's memory, which otherwise would have been delivered through the cellular network. However, it leads to several challenging questions, including how much mobile data actually flows through cellular networks, how much data can be pre-cached, and when and what to pre-cache. We address these questions progressively using a thorough analysis of user data collected from our purpose-built crowdsensing Android application, actively utilized by 45 users for periods dating back to July 2014. Our analysis shows that the median smartphone user transfers 15% of their data via the cellular network and that 80% of it can be pre-cached via WiFi. To capitalize on these results, we draw on a careful analysis of the measurement data to introduce an algorithm that can run stand-alone on off-the-shelf smartphones and predict with good accuracy when and what to pre-cache.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to IEEE editor. The definitive version is available at http://ieeexplore.ieee.org This papers appears in Proceedings 2018 IEEE 43rd Conference on Local Computer Networks (LCN). The original PDF of the article can be found at: https://ieeexplore.ieee.org/document/8638100
HAL Id:hal-02891609
Audience (conference):National conference proceedings
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
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Deposited On:01 Sep 2020 07:31

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