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Energy is a valuable resource in wireless sensor networks (WSNs). The status of energy consumption should be continuously monitored after network deployment. The information about energy status can be used to early notify both sensor nodes and network deployers about resource depletion in some parts of the network. It can also be used to perform energy-efficient routing in WSNs. In this paper, we...
The objective of this article is to improve the performance of a transaction in a real time distributed system comprising of heterogeneous networks. For this purpose we have developed a Queue Sensing Distributed Real-Time Commit Protocol (QSDRCP) which ensures the maximum number of transactions is processed before the deadline expires and the ACID property of the transactions executed is preserved...
Recent advancements in wireless communication and microchip techniques have accelerated the development of wireless sensor networks (WSNs). Key management in WSNs is a critical and challenging problem because of the inner characteristics of sensor networks: deployment in hostile environments, limited resource and ad hoc nature. In this paper we investigate the constraints and special requirements...
Wireless sensor networking is envisioned as an economically viable paradigm and a promising technology because of its ability to provide a variety of services, such as intrusion detection, weather monitoring, security, tactical surveillance, and disaster management. The services provided by wireless sensor networks (WSNs) are based on collaboration among small energy-constrained sensor nodes. The...
A wireless sensor network (WSN) consists of autonomous devices equipped with sensors to cooperatively monitor certain physical or environmental phenomena, such as temperature, vibration, pressure, or pollutants, at different locations. These devices called sensor nodes (SNs) have sensing, computation and wireless communication capabilities. One of the significant features of SNs is their limited battery...
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