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Sustainability 2017, 9(4), 647; doi:10.3390/su9040647

Exclusive Contexts Resolver: A Low-Power Sensing Management System for Sustainable Context-Awareness in Exclusive Contexts

Department of Electrical and Computer Engineering, Ajou University, 206, Suwon 16499, Korea
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Academic Editor: James J. Park
Received: 3 March 2017 / Revised: 13 April 2017 / Accepted: 17 April 2017 / Published: 19 April 2017
(This article belongs to the Collection Advanced IT based Future Sustainable Computing)
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Abstract

Several studies focus on sustainable context-awareness of a mobile device to which power is supplied from a limited battery. However, the existing studies did not consider an unnecessary sensing operation in exclusive contexts wherein it is not possible for the exclusive contexts to logically exist at the same time and are instead occasionally inferred practically due to the inaccuracy of the context-awareness. Simultaneously inferring two or more exclusive contexts is semantically meaningless and leads to inefficient power consumption, and thus, it is necessary to handle this problem for sustainable context-awareness. To this end, in the present study, an exclusive contexts resolver (ExCore), which is a low-power sensing management system, is proposed for sustainable context-awareness in exclusive contexts. The ExCore takes the sensor behavior model to the developer and identifies the sensing operation inferring the exclusive contexts through unnecessary sensing operation search rules. It also generates low-power sensing operations. The application and middleware were evaluated with the low-power sensing operations generated by the ExCore. The results indicated an average power efficiency improvement of 12–62% depending on the test scenario. The ExCore helps application developers or middleware developers in providing sustainable context-aware service in exclusive contexts. View Full-Text
Keywords: low-power; context-aware; sustainable; exclusive contexts; sensor management; sensing behavior model; context-sensing model low-power; context-aware; sustainable; exclusive contexts; sensor management; sensing behavior model; context-sensing model
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Baek, D.; Lee, J.-W. Exclusive Contexts Resolver: A Low-Power Sensing Management System for Sustainable Context-Awareness in Exclusive Contexts. Sustainability 2017, 9, 647.

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