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MOBIHOC
2005
ACM

Power balanced coverage-time optimization for clustered wireless sensor networks

9 years 11 months ago
Power balanced coverage-time optimization for clustered wireless sensor networks
We consider a wireless sensor network in which sensors are grouped into clusters, each with its own cluster head (CH). Each CH collects data from sensors in its cluster and relays them to a sink node directly or through other CHs. The coverage time of the network is defined as the time until one of the CHs runs out of battery, resulting in an incomplete coverage of the sensing region. We study the maximization of coverage time by balancing the power consumption of different CHs. Using a Rayleigh fading channel model for inter-cluster communications, we provide optimal power allocation strategies that guarantee (in a probabilistic sense) an upper bound on the end-to-end (inter-CH) path reliability. Our allocation strategies account for the interaction between routing and clustering by considering the impacts of intra- and inter-cluster traffic at each CH. Two mechanisms are proposed for achieving balanced power consumption: the routing-aware optimal cluster planning and the clustering-...
Tao Shu, Marwan Krunz, Sarma B. K. Vrudhula
Added 24 Dec 2009
Updated 24 Dec 2009
Type Conference
Year 2005
Where MOBIHOC
Authors Tao Shu, Marwan Krunz, Sarma B. K. Vrudhula
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