Wake-Up Radio for Low-Power Internet of Things Applications: An Alternative Method to Coordinate Data Transfers

Reductions in wireless-sensor-node form factor and cost have enabled new applications for remote sensing in a variety of areas, such as grid infrastructure, building automation, medicine, factory automation and control, and automobiles. The projected number of sensor nodes is so large that battery replacement for all of them is impractical. Therefore, for market success, power consumption must be low enough that power can be supplied through energy harvesting or a small battery capable of lasting the lifetime of the sensor node.