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The validity of sensed data that labels the change events plays the most important role in the accuracy and reliability of the Internet of Things (IoT)-based Wireless sensor network (WSN) applications to assure data quality for perfect decision making. In this study, we suggested and implemented a sensor data validation approach based on adaptive threshold for real-time IOT/WSN sensor node level....
We consider the problem of failure management in wireless sensor networks (WSN). In such networks, nodes can be subject to frequent failures due to energy depletion and the hostile deployment environment. Our work focuses on local crash process detection in WSN considering intermittent failures due to lossy radio links. As a part of this problem, we introduce a new type of Adaptive Neighborhood Failure...
Wireless sensor networks (WSNs) have significant potential in many application domains such as agriculture, health, environmental monitoring, battlefield surveillance, and wild fire detection. They, however cannot be used in large geographical areas due to the short communication range of sensors.. In addition, sensor networks have been the lack of available network management and control tools, such...
Due to the recent development in micro mechanics, electronics and wireless communication technologies, Multi-Robot Sensor Network (MRSN) becomes a hot issue for many robotic applications. In MRSN, from a viewpoint of sensor network communication, each robot senses data and transmits it to the adjacent robot to collect all data at the sink in a multi-hop manner. According to applications, delay taken...
Due to the Recent development in wireless technology, wireless sensor networks attract researchers' attention because of their applicability in many fields for effective collection of sensing data with low cost. Wireless sensor networks have many applications; some of the applications are military application, environmental application and flood detection. For example, in an environmental application...
Since WSNs have restricted energy sources, the energy efficiency of a synchronization scheme is as important as the accuracy of a clock. To accomplish both the energy efficiency and the accuracy, we propose a new clock synchronization scheme called Chaining Clock Synchronization (CCS). In CCS, a subset of nodes whose transmission range cover the overall network carries out a two-way message exchange...
This paper proposes a novel timeout scheduling scheme for data aggregation in wireless sensor networks, which adaptively configures both the length of timeout and the collecting period according to the potential level of event occurrence. At normal times, the proposed scheme decreases the length of timeout that is a waiting time for messages from child nodes, and it makes longer the collecting period...
A synchronized network time is essential for many applications in low energy-consumption distributed systems such as data fusion and target tracking. This paper presents a simple broadcast synchronization method for low energy-consumption distributed systems. It's based on sender-receiver scheme and uses only one time broadcast to synchronize all nodes in the distributed network. Also, this scheme...
We have developed a secure, accurate and energy-efficient time synchronization protocol (SAEP). First, SAEP achieves accurate time synchronization service with significantly reducing the number of message exchanges. Second, SAEP safeguards Byzantine failure, in which nodes drop, modify, or delay time information in an attempt to disrupt the time synchronization service in multi-hop networks. SAEP...
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