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Sensor networks have attracted much attention in the recent years for its wide applications in biology, medicine, security and battlefield, etc. Data gathering is one of the most important operations in wireless sensor networks. In this paper, we present an energy-delay efficient data gathering protocol, SODG, for sensor networks while taking the transmission interference into considerations. The...
With the development of wireless sensor network technology, more and more WSNs applications have the requirements of dealing with the critical mission. In this paper, we focus on the time critical problems of WSNs applications and design a new level control temporal consistency model with the priority tag. Then a Temporal Consistency Optimized Algorithm (TCO) is proposed to ensure that the packet...
Data collection is one of the most important operations in wireless sensor networks. Many practical applications require the real-time data transmission, such as monitoring, tracking, etc. In this paper, we import and define the topology control problem for delay-constraint data collection (TDDC), and then formalize this problem into an integer programming problem. As NP-Hardness of this problem,...
Wireless sensor and actor networks (WSANs) have attracted much attention in the recent years. In WSANs, sensor nodes are in charge of the sensing task, while the actor nodes take actions in response to the sensed phenomena or the detected event. In order to execute the correct operations, the applications typically have to process the data or messages from the different sensors in the same order....
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