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In some environment, randomly deployed sensor nodes could not satisfy the requirements of wireless sensor network. Therefore, it is necessary to use mobile sensor nodes in some special conditions. And after moving nodes are deployed randomly, they could be relocated according to the real-time situation of network coverage degree. This paper proposes a hexagonal grid-based sensor deployment algorithm,...
The rapid expansion of wireless sensor networks technology has created an unprecedented opportunity to gather and extract information from wireless sensor networks. How to gather sensed information in energy efficient way is critical problems recently. Clustering technique has been proven to be an effective approach for data-gathering in wireless sensor networks. However, in a mobile environment,...
We consider an energy-efficient data aggregation scheme for sensor networks with mobile access (SENMA), a design that opens the possibility of relieving low-power nodes from energy-consuming networking tasks. Specifically, we provide a novel distributed one-hop clustering algorithm to organize the network into a minimum cost hierarchical architecture (MCHA) for collecting all sensing data from the...
Energy conservation is a key issue in ad hoc wireless network operation. Placing relay nodes (routers) at appropriate locations can substantially lower the power requirements of communicating nodes, thereby reducing overall energy needs. We investigate router placement (RP) for energy-constrained wireless networks, and present RP algorithms that aim to minimize total energy consumption. We consider...
In this paper, the problem of tracking cooperative mobile nodes in wireless sensor networks is addressed. Aiming at an efficient resource solution, the research adopts a strategy of combining target tracking with node selection procedures in order to select informative sensors to minimize the energy consumption of the tracking task. We devise a cluster-based architecture to address the limitations...
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