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Issue No.11 - November (2007 vol.6)
pp: 1270-1283
ABSTRACT
Rapid advances in a wide range of wireless access and networking technologies along with ubiquitous computing and communications have set the stage for the development of smart environments (e.g., smart homes or offices). ‘Contextawareness’ is perhaps the most salient feature in such intelligent (indoor) environments. Examples of contexts include the ’location’ and ’activities’ of the inhabitants, among others. In this paper, we develop a predictive framework for location-aware resource optimization in smart homes, based on the hypothesis that the mobility of an inhabitant creates an uncertainty of his location. With the help of information theory, the proposed framework is shown to minimize this uncertainty through optimal learning and prediction of the inhabitant’s movement (location) profiles captured in the symbolic domain. The concept of Asymptotic Equipartition Property (AEP) is also used to predict the inhabitant’s most likely routes (or path-segments) with high degree of accuracy. Successful predictions help in several ways, such as automated device control and proactive reservation of resources (e.g., electrical energy and other utilities, or scarce wireless bandwidth for mobile multimedia applications) along the inhabitant’s most probable locations and paths. The goal here is to minimize the maintenance and operations cost of the smart home as well as to provide better comfort to the inhabitants. Experimental results from a typical smart home floor plan corroborate the prediction success and significant reduction in daily energy consumption and manual operations of devices.
INDEX TERMS
Location Awareness, Smart Homes, Information Theory, LZ-78 Compression, Ubiquitous Computing
CITATION
Abhishek Roy, Sajal K. Das, Kalyan Basu, "A Predictive Framework for Location-Aware Resource Management in Smart Homes", IEEE Transactions on Mobile Computing, vol.6, no. 11, pp. 1270-1283, November 2007, doi:10.1109/TMC.2007.1058
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