QoS-Aware Service Selection Algorithms for Pervasive Service Composition in Mobile Wireless Environments

Authors:
Kun Yang;Alex Galis;Hsiao-Hwa Chen
Affiliations:
School of Computer Science and Electronic Engineering, University of Essex, Colchester, UK;Department of Electronic & Electrical Engineering, University College London, London, UK;Department of Engineering Science, National Cheng Kung University, Tainan City, Taiwan 70101
Venue:
Mobile Networks and Applications
Year:
2010

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Abstract

The successful application of pervasive services running in mobile wireless networks and devices relies on its ability to provide efficient and cost-effective QoS (Quality of Service) support. This paper proposes a comprehensive QoS model specifically for pervasive services. It considers not only user-perceived factors but also mobile wireless network characteristics. The corresponding formula to calculate each QoS criterion is also devised. In particular, this paper formulates the QoS-aware service selection problem for pervasive service composition and proposes some solutions to the problem, i.e., global-search-based LOSSA (local optimal service selection algorithm) and limited broadcast based LOSSA-k. The evaluation results of the algorithms have shown the effectiveness of the QoS model and the efficiency of the proposed LOSSAs.