Title: Fuzzy preserving virtual polar coordinate space sensor networks for mobility performance consideration

Authors: Wally Chen, Sy-Yen Kuo, Han-Chieh Chao

Addresses: Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, ROC. ' Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, ROC. ' Department of Electronic Engineering, National Ilan University, I-Lan, Taiwan, ROC

Abstract: One of the major problems in sensor networks is how to build a topology aligned to the practical environment. This paper presents a novel method for building a logical tree using Virtual Polar Coordinate Space (VPCS). This tree structure gives every node a pair of IDs representing an included angle. The angle range is a characteristic that indicates the relationship between the current node and the destination node. In such a structure, efficient routing strategies for utilising cross-links are provided without additional information. The maintenance of tree structure in a mobile environment is considered. This tree-like architecture is suitable for organising in sensor networks; however, it is a challenge to maintain the tree-like architecture, especially in sensor networks, each node can only provide limited functions. The essential point of this paper is to preserve the angle range for handling node|s variations and a fuzzy system is adopted to estimate the preserving range.

Keywords: virtual polar coordinate space; VPCS; sensor networks; mobility performance; fuzzy logic; tree structure; routing strategies.

DOI: 10.1504/IJSNET.2006.012033

International Journal of Sensor Networks, 2006 Vol.1 No.3/4, pp.179 - 189

Published online: 12 Jan 2007 *

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