Perpetual environmentally powered sensor networks
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
Network lifetime maximization for time-sensitive data gathering in wireless sensor networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
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In this paper we consider the use of a link-unreliable wireless sensor network for remote monitoring, where the monitoring center is geographically located far away from the region of the deployed sensor network. The sensing data is transferred to the monitoring center by the third party communication service, which incurs service cost. We first formulate a novel optimization problem of maximizing the network throughput with minimal service cost, which is shown to be NP-hard. We then develop approximation algorithms. We finally evaluate the performance of the proposed algorithms by simulations. Experimental results demonstrate that the solutions delivered by proposed algorithms are fractional to the optimum.