Bounds on lifetime of cluster-based ultra-wide band wireless sensor network
by Juan Xu, Yong-Fa Hong, Chang-Jun Jiang
International Journal of Ad Hoc and Ubiquitous Computing (IJAHUC), Vol. 3, No. 3, 2008

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.

Online publication date: Tue, 20-May-2008

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