A wireless sensor network (WSN) is formed by a large number of low-power, inexpensive, unobtrusive sensor nodes deployed in interested environments or embedded into ordinary objects for monitoring habitats, tracking objects, and processing collected information. As a self-organized ad hoc network system of battery-powered nodes, WSN is characterized by the limited energy supply and a large number of nodes. Topology control (TC) as one of the main ways to control energy consumption in WSNs has been the focus of a considerable body of research. Network topology control is about management of network topology to support network-wide requirements. In this book, we will discuss a two-level topology control strategy to achieve energy saving, and a set of topology control clustering algorithms based on connected dominating set.

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