Cell Based QoSE Centric Topology Control Algorithm for Wireless Sensor Networks

The central issue of Topology control (TC) in wireless sensor networks is how to select the appropriate active nodes. This paper proposes a Quality of SEnsing (QoSE) centric TC algorithm CQCTC: it combines a node's sensed frequency and signal strength of physical events to define QoSE and uses the predicted QoSE as the metric for WN selection; therefore CQCTC could form proper topology structures dynamically according to the distribution of the targets/events. Simulation experiments indicate that, compared with the existing TC algorithms, CQCTC decreases network energy cost and extends network lifetime.