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Sensors 2018, 18(6), 1728; https://doi.org/10.3390/s18061728

Energy Modeling of IoT Mobile Terminals on WiFi Environmental Impacts

1
Department of Computer Science, Jinan University, Guangzhou 510630, China
2
College of Computing, South China Normal University, Guangzhou 510630, China
This article is an extended version of the paper entitled “Modeling the Impacts of WiFi Signals on Energy Consumption of Smartphones”, presented at CollaborateCom 2017, Edinburgh, UK, 11–13 December 2017.
*
Author to whom correspondence should be addressed.
Received: 15 March 2018 / Revised: 16 May 2018 / Accepted: 16 May 2018 / Published: 28 May 2018
(This article belongs to the Special Issue Sensor Networks for Collaborative and Secure Internet of Things)
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Abstract

With the popularity of various IoT mobile terminals such as mobile phones and sensors, the energy problems of IoT mobile terminals have attracted increasingly more attention. In this paper, we explore the impacts of some important factors of WiFi environments on the energy consumption of mobile phones, which are typical IoT end devices. The factors involve the WiFi signal strength under good signal conditions, the type and the amount of protocol packets that are initiated by WiFi APs (Access Points) to maintain basic network communication with the phones. Controlled experiments are conducted to quantitatively study the phone energy impacts by the above WiFi environmental factors. To describe such impacts, we construct a time-based signal strength-aware energy model and packet type/amount-aware energy models. The models constructed in the paper corroborate the following user experience on phone energy consumption: (1) a phone’s energy is drawn faster under higher WiFi signal strengths than under lower ones even in normal signal conditions; (2) phones consume energy faster in a public WiFi network than in a private one even in the basic phone state. The energy modeling methods proposed in the paper enable ordinary developers to analyze phone energy draw conveniently by utilizing inexpensive power meters as measurement tools. The modeling methods are general and are able to be used for phones of any type and any platform. View Full-Text
Keywords: WiFi environment; phone energy consumption; signal strength; packet type; packet amount; modeling method WiFi environment; phone energy consumption; signal strength; packet type; packet amount; modeling method
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Sun, Y.; Chen, J.; Tang, Y.; Chen, Y. Energy Modeling of IoT Mobile Terminals on WiFi Environmental Impacts . Sensors 2018, 18, 1728.

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