Hop-count based node-to-anchor distance estimation in wireless sensor networks

Authors:
Di Ma;Bang Wang;Hock Beng Lim;Meng Joo Er
Affiliations:
Intelligent Systems Center, Nanyang Technological University, Singapore;Intelligent Systems Center, Nanyang Technological University, Singapore;Intelligent Systems Center, Nanyang Technological University, Singapore;Intelligent Systems Center, Nanyang Technological University, Singapore
Venue:
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
Year:
2009

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Abstract

Localization is one of the most important research issues in Wireless Sensor Networks (WSNs). Hop-count based localization has been proposed as a cost-effective alternative to the expensive hardware-based localization schemes. In this paper, we propose a new method to estimate distances between anchors and nodes based on hop-count information. Localization is then achieved using the estimated distances. Simulation results show that the performance of our proposed algorithm is much better than that of the DV-hop algorithm [1] in terms of the node-to-anchor distance estimation and localization accuracy, and the improvement is proportional to the node density.