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2005
IEEE

Maximizing the Lifetime of Dominating Sets

9 years 5 months ago
Maximizing the Lifetime of Dominating Sets
We investigate the problem of maximizing the lifetime of wireless ad hoc and sensor networks. Being battery powered, nodes in such networks have to perform their intended task under rigid energy restrictions that forces the designers to impose a judicious power management and scheduling. For the purpose of saving energy, dominating set based clustering has turned out to be a useful and generic concept in such networks. In data gathering applications, for example, only nodes in the dominating set must be active, while all other nodes can remain in the energy-efficient sleep mode. Prolonging the duration of such a dominating set based clustering is a key algorithmic challenge. In this paper, we define the maximum cluster-lifetime problem which asks for a schedule that maximizes the time the network is clustered by a dominating set. We give approximation algorithms with an approximation ratio of O(log n) for several variants of the maximum cluster-lifetime problem. Our approach is base...
Thomas Moscibroda, Roger Wattenhofer
Added 25 Jun 2010
Updated 25 Jun 2010
Type Conference
Year 2005
Where IPPS
Authors Thomas Moscibroda, Roger Wattenhofer
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