Institute of Research and Journals (IRAJ)
Wireless Sensor Networks (WSNs) have been proposed as powerful means for in situ observation of events and environments over long periods of time. A large number of small and simple sensor devices communicate over short-range wireless interfaces to deliver observations over multiple hops to central locations called sinks. With these properties, WSNs are considered for several critical application scenarios including battlefield surveillance, habitat monitoring, traffic monitoring, and security applications. Sensor nodes, and hence these applications, are subject to constraints such as limited processing, storage, communication capabilities, and limited power supplies.