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The wireless sensor network (WSN) is an interesting area for modern day research groups. Tiny sensor nodes are deployed in a diversity of environments but with limited resources. Scarce resources compel researchers to employ an operating system that requires limited memory and minimum power. Tiny operating system (TinyOS) is a widely used operating system for sensor nodes, which provides concurrency...
Most of the existing media access control protocols for cognitive radio networks are based on global dedicated common control channel (GCC). They use GCC to negotiate for data channels and to protect incumbents. The GCC is prone to saturation problem, DoS attack and wasteful of bandwidth resource. Further, it may be not available in some practical cost-sensitive applications. In this paper, we present...
As services utilizing USN increases, various simulators that virtually enables sensor network have been developed. This paper suggests MOUL framework - a framework that provides status information of sensor network with mobile object - which is different from existing frameworks that use simulators to verify packets, protocols, and networks models. MOUL calculates sensing rates of different sensor...
This paper designs LS-ware (Large-Scale USN middleware) in order to collect and save large-scale sensing data and to analyze collected data and run status sensing function. LS-ware not only provides USN middlewarepsilas basic function such as Meta information, quality process, or status management, but also makes large-scale sensing data light-weighted and provides a suitable event processing feature...
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