Topology Maintenance: Extending the Lifetime of Wireless Sensor Networks

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Executive Summary

Topology control is a well-known strategy to save energy and extend the lifetime of wireless sensor networks. In the literature, it is usually referred as the process that, given a set of nodes, builds a reduced topology that still guarantees connectivity and coverage. Here, the authors extend this definition. They consider topology control as two processes: topology construction and topology maintenance. Topology construction encompasses those algorithms that build the reduced topology. Topology maintenance is the process that changes the reduced topology from time to time when the current one is no longer optimal. In this paper, they define topology maintenance and present different strategies and triggering criteria that can be used to switch the network topology.

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