A distributed fault-tolerant topology control algorithm for heterogeneous wireless sensor networks
IEEE Transactions on Parallel and Distributed Systems
IEEE Computer Society
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/22203
This paper introduces a distributed fault-tolerant topology control algorithm, called the Disjoint Path Vector (DPV), for heterogeneous wireless sensor networks composed of a large number of sensor nodes with limited energy and computing capability and several supernodes with unlimited energy resources. The DPV algorithm addresses the κ-degree Anycast Topology Control problem where the main objective is to assign each sensor's transmission range such that each has at least κ-vertex-disjoint paths to supernodes and the total power consumption is minimum. The resulting topologies are tolerant to κ-1 node failures in the worst case. We prove the correctness of our approach by showing that topologies generated by DPV are guaranteed to satisfy κ-vertex supernode connectivity. Our simulations show that the DPV algorithm achieves up to 4-fold reduction in total transmission power required in the network and 2-fold reduction in maximum transmission power required in a node compared to existing solutions. © 2014 IEEE.
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