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We consider the online data gathering problem in wireless sensor networks and examine the key issues of load balancing the nodes to achieve longer network lifetime, and that of load balancing the network links to achieve greater reliability in the network. We model the given network as a shortest-path DAG D, which defines a set of parent nodes for each node that determine the minimum-hops paths from...
Design an energy efficient routing protocol for wireless sensor network is a very important issue because of the constrained energy of sensor nodes. In this paper, an energy efficient routing protocol (VBT-EBHRP) is proposed. In this protocol, a virtual backbone tree is constructed and based on the virtual backbone tree, a routing tree is constructed. The residual energies of the virtual backbone...
MELEACH-L proposed in this paper as an expanded version of MELEACH makes the major functions of MELEACH applicable to large-scale WSNs whose dimension is much larger than the largest transmission radius of the sensor nodes. The channel assignment among neighbor clusters and the cooperation among cluster heads during data collection are two major difficulties in a large WSN. MELEACH-L solves the two...
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