A Wireless Sensor Network (WSN) consists of a large number of sensor devices characterized by reduced dimension, low cost and low power, which are able to organize themselves into a network by communicating through a wireless medium, collaborating in order to accomplish a common task.
Nodes are distributed over a specific field, and they are able to collect and relay information about the environment, in order to provide fine-grained observations of a phenomenon. A sensor node is typically equipped with one or more sensors that are used to capture events from the environment, an analog-digital converter, a radio transceiver, a central processing unit with limited computational capabilities, a small amount of memory, and a battery power supply. Sensor devices collaborate with each other in order to perform basic operations such as sensing, communication, and data processing.
WSNs provide monitoring services in different areas, such as industrial, military, public safety, automotive, agriculture, localization, seismic, medical, commercial and emergency situations. Some of the most interesting applications are detecting the enemy units during military monitoring, person locator, disaster detection, and health condition monitoring.
The network design objectives and requirements include: reduced dimension, low cost and low power, scalability, adaptability, reliability, fault-tolerance, security, selfconfigurability and QoS.
- Security in WSN
- Trust and reputation in WSN
- Routing protocols for WSN
- Simulation tools for WSNs