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Abstract and Applied AnalysisVolume 2014 2014, Article ID 236279, 11 pages

Research Article

Key Laboratory of Advanced Process Control for Light Industry Ministry of Education, Institute of Automation, Jiangnan University, Wuxi 214122, China

Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China

Received 24 January 2014; Revised 28 April 2014; Accepted 15 May 2014; Published 22 June 2014

Academic Editor: Shuping He

Copyright © 2014 De Gu 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.


Wireless sensor networks WSN are becoming increasingly promising in practice. As the predeployment design and optimization are usually unpractical in random deployment scenarios, the global optimum of the WSN’s performance is achievable only if the topology dependent self-organizing process acquires the overview of the WSN, in which the boundary is the most important. The idea of this paper comes from the fact that contours only break on the geometrical boundary and the WSN are discrete sampling systems of real environments. By simulating a diffusion process in discrete form, the end point of semi-contours suggests the boundary nodes of a WSN. The simulation cases show the algorithm is well worked in WSN with average degree higher than 10. The boundary recognition could be very valuable for other algorithms dedicated to optimize the overall performance of WSN.

Autor: De Gu, Jishuai Wang, and Ji Li



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