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Wireless Sensor Networks (WSNs) have emerged as a new research technology in the distributed computing environment and plays a very important role in the pervasive computing to support various applications. It has a great potential to be utilized in battlefields and in different commercial applications like traffic surveillance, habitat monitoring, construction structures, smart homes, offices and many more. Research on several aspects of WSNs like energy efficiency, power management, routing, topology control, data management and security are progressing extensively. In this technical paper a survey on recent trends in wireless sensor network research, different topologies, routing protocols, simulators and applications is carried out.
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