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Wireless sensor networks (WSNs) are widely used nowadays in various domains. In general, the applications in which the WSN is deployed need that this network presents a minimal degree of reliability, effectiveness and robustness. However, the specificity of the nodes deployed in this type of networks makes them prone to failures. In this paper, we discuss the recovery from simultaneous failures for...
The recent advancements in the field of Wireless Sensor Networks (WSN) make the sensors smaller, cheaper and more energy efficient. These innovations made it attractive to use sensor networks in new applications like Border monitoring, Railway track monitoring, Oil and Gas pipeline monitoring etc. In the above mentioned applications, a common characteristic is their linear topology. Since last few...
Multi-hop wireless sensor networks (WSN) have many applications in nowadays' environment monitoring. However, it is very challenging to predict the throughput for an arbitrary multi-hop wireless sensor network with different source data rates. In this paper, we propose an iterative decomposition method for this purpose. We first identify a limited number of basic network configuration of chain topology...
We investigate decentralized detection in clustered sensor networks with hierarchical multi-level fusion. We focus on simple majority-like fusion strategies, leading to closed-form analytical performance evaluation. The sensor nodes observe a binary phenomenon and transmit their own data to an access point (AP), possibly through intermediate fusion centers (FCs). We investigate the impact of uniform...
For large-scale wireless sensor networks (WSNs), a three-layer topology architecture and an algorithm of topology control for its key communication layer are proposed in this paper. In the algorithm, the base station of the network leads the ring periodically to discover the minimum power cost links from base station to each sinks, and a minimum spanning tree will be constructed. This tree will be...
Wireless sensor networks(WSNs) are very important for monitoring underground mine safety. Aimed at the characteristics of structure of the tunnel in underground mine, the tunnel wireless sensor network (TWSN) is presented to monitor the tunnel. TWSN has the unbalanced communication load which leads to early invalidation of nodes close to the base station. The nonuniform clustering algorithm for TWSN...
A principal factor in sensor network design is energy efficiency. In this work, we propose to extend the lifetime of sensor networks using appropriate choice of sensor node distribution. The key idea of our scheme is to deploy more nodes in areas of extensive energy usage. Using this scheme of sensor node distribution, we use probabilistic angular routing to route data packets from the sensor nodes...
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