Security in Wireless Sensor Networks: an Overview
نویسنده
چکیده
Recent breakthroughs in micro sensor technologies allow us to engineer compact, battery powered, wireless communication enabled and cheap sensing devices, sensor nodes. Combining those cheap sensor nodes into networks allows us to create Wireless Sensor Networks (WSN). Figure.1 shows the general architecture of a typical WSN. Sensor nodes are usually low power, with limited computational and storage capabilities. Base station usually serves, for WSN, as a gateway to external network. Base station is typically more powerful device, than sensor nodes, with long lasting battery and better storage capabilities. Base station can communicate to external network (which is usually in the Internet) using wired and/or wireless communication channels. The main goal of every WSN is to perform certain sensing tasks and report the results, in appropriate form, to the remote operator. WSN tasks are classified into three categories: space monitoring, monitoring assets (things), monitoring interactions [10].
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