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Bartendr: a practical approach to energy-aware cellular data scheduling

Published: 20 September 2010 Publication History

Abstract

Cellular radios consume more power and suffer reduced data rate when the signal is weak. According to our measurements, the communication energy per bit can be as much as 6x higher when the signal is weak than when it is strong. To realize energy savings, applications must preferentially communicate when the signal is strong, either by deferring non-urgent communication or by advancing anticipated communication to coincide with periods of strong signal. Allowing applications to perform such scheduling requires predicting signal strength, so that opportunities for energy-efficient communication can be anticipated. Furthermore, such prediction must be performed at little energy cost.
In this paper, we make several contributions towards a practical system for energy-aware cellular data scheduling called Bartendr. First, we establish, via measurements, the relationship between signal strength and power consumption. Second, we show that location alone is not sufficient to predict signal strength and motivate the use of tracks to enable effective prediction. Finally, we develop energy-aware scheduling algorithms for different workloads - syncing and streaming - and evaluate these via simulation driven by traces obtained during actual drives, demonstrating energy savings of up to 60%. Our experiments have been performed on four cellular networks across two large metropolitan areas, one in India and the other in the U.S.

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        cover image ACM Conferences
        MobiCom '10: Proceedings of the sixteenth annual international conference on Mobile computing and networking
        September 2010
        402 pages
        ISBN:9781450301817
        DOI:10.1145/1859995
        • General Chair:
        • Nitin Vaidya,
        • Program Chairs:
        • Suman Banerjee,
        • Dina Katabi
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        Published: 20 September 2010

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        Author Tags

        1. bartendr
        2. cellular
        3. energy
        4. evdo
        5. hsdpa
        6. mobile

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        • (2023)Lowering and Analyzing the Power Consumption of SmartphonesIntelligent Computing and Optimization10.1007/978-3-031-50327-6_29(274-288)Online publication date: 16-Dec-2023
        • (2022)Context-driven Encrypted Multimedia Traffic Classification on Mobile Devices2022 IEEE International Conference on Pervasive Computing and Communications (PerCom)10.1109/PerCom53586.2022.9762389(54-64)Online publication date: 21-Mar-2022
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