Wireless sensor networks (WSN) have become a hot research topic and show much promise to become a driver of current and future microelectronic technologies. This emerging technology offers exciting potential for numerous application areas including environmental, medical, military, transportation, entertainment and crisis management.
In the main scenario, users retrieve information from a WSN by injecting queries and gathering results from sensor nodes, called “motes.” A single mote might consist of sensing, computing, communication, actuation, and power components, which are integrated and packaged into a miniaturized mote. A WSN usually consists of tens to thousands of such nodes, communicating through wireless channels for information sharing and cooperative processing.
Because of the requirement of unattended operation in remote or even potentially hostile locations, sensor networks are extremely energy-limited.