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Wireless Sensor Networks: A Survey

This Paper reviews about the wireless sensor networksarchitectures, protocols, applications and simulators.The demand of wireless sensor networks has robustly increased in current years. Wsns are increasingly deployed in a variety of applications, primarily for military application and currently used in monitoring of medical conditions inside human body, monitoring the climate change and also used in reporting the mechanical stresses in building and bridges. Research on several aspects of Wsns like energy efficiency, power management, topology control, data management and security are progressing extensively. In this paper a survey on recent trends in wireless sensor network research, different topologies, routing protocols, simulators and applications is carried out.