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The Scientific World Journal
Volume 2014 (2014), Article ID 835260, 11 pages
http://dx.doi.org/10.1155/2014/835260
Research Article

Utility-Oriented Placement of Actuator Nodes with a Collaborative Serving Scheme for Facilitated Business and Working Environments

1Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong Island, Hong Kong
2International Business School Suzhou, Xi’an Jiaotong-Liverpool University, Suzhou 215123, China
3Xi’an Jiaotong-Liverpool University, Suzhou 215123, China
4Yonsei University, Seoul 120-749, Republic of Korea

Received 27 March 2014; Accepted 17 June 2014; Published 2 July 2014

Academic Editor: Xiaoxuan Meng

Copyright © 2014 Chi-Un Lei et al. 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.

Abstract

Places to be served by cyber-physical systems (CPS) are usually distributed unevenly over the area. Thus, different areas usually have different importance and values of serving. In other words, serving power can be excessive or insufficient in practice. Therefore, actuator nodes (ANs) in CPS should be focused on serving around points of interest (POIs) with considerations of “service utility.” In this paper, a utility-oriented AN placement framework with a collaborative serving scheme is proposed. Through spreading serving duties among correctly located ANs, deployment cost can be reduced, utility of ANs can be fully utilized, and the system longevity can be improved. The problem has been converted into a binary integer linear programming optimization problem. Service fading, 3D placements, multiscenario placements, and fault-tolerant placements have been modeled in the framework. An imitated example of a CPS deployment in a smart laboratory has been used for evaluations.