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We deal with positioning of node in wireless sensor network (WSN) using received signal strength (RSS) when there is no priori knowledge about path-loss exponent and transmission power. Since the RSS decreases on the average with distance, it carries some information about the distance to an unknown node. By ordering the RSS's, we conclude that there are some convex sets where the position of the...
This paper studies the problem of energy consumption minimization in wireless sensor networks (WSNs) under uncertainty in sensor node generated traffic. It is important to consider traffic uncertainty because WSNs designed for surveillance and monitoring applications typically operate in event-driven and query-driven modes for which the node generated traffic changes from instant to instant. The problem...
In wireless sensor networks, a geographic routing requests source nodes (sensor nodes) to know location information of destination nodes (sinks) to send their data. To address this issue, many sink location service schemes have been proposed in the literature. They are designed to support only one communication mode such as unicast, anycast, manycast, or multicast communication modes. However, because...
This paper proposes a novel data-aggregation approach for capacity planning of a wireless sensor network (WSN). The approach is based on incorporating the three sensor's tasks, which are sensing, processing and transmission, into a task flow graph (TFG); moreover all TFGs within WSN are merged into one super task flow graph (STFG). Also, we have modeled the execution time of transmission task as non-preemptive...
The IEEE 802.15.4 standard was developed for the purpose of media access control of low power wireless personal area networks. Wireless sensor network devices have the general characteristics of low power capabilities and operation. From this point of view, it makes technical sense to use the IEEE 802.15.4 standard for the MAC layer of wireless sensor networks. There are several modes of operation...
Computing Bilinear Pairing on sensor platforms has become an important research topic since the introduction of pairing-based cryptography to Wireless Sensor Networks (WSNs). Some previous works have provided benchmarks for the pairing computation on sensors. However, a complete pairing-based cryptographic scheme requires much more than just a bilinear pairing operation, and little work has been done...
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