Abstract
In this paper, we propose a power efficient data dissemination (PEDD) scheme for wireless sensor networks (WSNs) with mobile sinks. A source proactively constructs a grid structure to disseminate data to the mobile sinks. For each grid point, a cost function is applied to choose a dissemination node to serve it. Only the dissemination nodes are in working mode, while the other sensor nodes just fall into sleep mode to conserve energy. A path along grid points is paved from a sink to the source for forwarding queries and disseminating data. To evenly distribute energy load in the WSN, the dissemination node with the most residual energy is selected for the upstream node in the query forwarding path. Simulation results show that PEDD outperforms previous scheme.
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