Title: Bounds on lifetime of cluster-based ultra-wide band wireless sensor network

Authors: Juan Xu, Yong-Fa Hong, Chang-Jun Jiang

Addresses: School of Electronics and Information Engineering, Tong-Ji University, Shanghai, 200092, China. ' School of Electronics and Information Engineering, Tong-Ji University, Shanghai, 200092, China. ' School of Electronics and Information Engineering, Tong-Ji University, Shanghai, 200092, China

Abstract: The asymptotic lower and upper bounds on the lifetime of cluster-based Time-Hopping Impulse Radio Ultra-Wide Band (TH-IR UWB) wireless sensor networks with n static sensor nodes randomly located on a square of area S are considered. We derive the lower and upper bounds on the lifetime of cluster-based TH-IR UWB sensor networks. The results indicate that the lifetime of cluster-based network is Θ((n/S log n)^α/2), which is at least (n^1/2/(log n)^α-1/2) times longer than that of non-cluster-based TH-IR UWB network; thus clustering can significantly improve the network lifetime. The bounds also reveal that the network lifetime increases with node density n/S, thus the large-scale dense cluster-based TH IR UWB wireless sensor network is more practical.

Keywords: wireless sensor networks; WSNs; wireless networks; clustering; network lifetime; ultra-wide band; energy dissipation.

DOI: 10.1504/IJAHUC.2008.018402

International Journal of Ad Hoc and Ubiquitous Computing, 2008 Vol.3 No.3, pp.159 - 166

Published online: 20 May 2008 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article