A GPS-less self-positioning method for sensor networks

Authors:
Hung-Chi Chu;Rong-Hong Jan
Affiliations:
Department of Computer and Information Science National Chiao Tung University Hsinchu, 30050, Taiwan;Department of Computer and Information Science National Chiao Tung University Hsinchu, 30050, Taiwan
Venue:
ICPADS '05 Proceedings of the 11th International Conference on Parallel and Distributed Systems - Workshops - Volume 02
Year:
2005

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Proceedings of the 2006 international conference on Wireless communications and mobile computing

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Abstract

One challenging issue in sensor networks is to determine where a given sensor node(SN) is physical located. This problem is especially crucial for very small SNs. In this paper, we present a GPS-less self-positioning method for sensor networks. In our method, a set of nodes, called as reference points (RPs), are deployed in the sensor network with overlapping regions of coverage. The RP periodically broadcasts beacon frames which contain localization data. The SN collects the beacon frames from RPs and processes the data in the frame, and then it can localize itself simply. The analysis of positioning accuracy are also given to show how well a SN can correctly localize itself.