Research in sensor networks has focused on development of energyefficient infrastructures. In this article, we introduce a new approach to organize sensor networks in clusters in order to reduce energy dissipation. O...
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ISBN:
(纸本)9781424445851
Research in sensor networks has focused on development of energyefficient infrastructures. In this article, we introduce a new approach to organize sensor networks in clusters in order to reduce energy dissipation. Our contribution is an heuristic to define the number of clusters and also an efficient manner to choose cluster heads by minimizing the distance between cluster heads and its cluster nodes. Inspired from LEACH, a well-known TDMA cluster-based sensor network architecture, we introduce a new method for building and maintaining clusters using the paradigm of a soccer team. In this work, a new algorithm called OH-Kmeans, based on the K-means algorithm, is used to find dynamically the number of clusters and form them, guaranteeing direct transmission between cluster heads and cluster nodes.
In this study, we present a performance evaluation of an energy conservation technique designed for mobile ad hoc networks. This technique was designed with energy fairness central to its operation. This algorithm is ...
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ISBN:
(纸本)1424404940
In this study, we present a performance evaluation of an energy conservation technique designed for mobile ad hoc networks. This technique was designed with energy fairness central to its operation. This algorithm is not a routing algorithm. It works with existing routing protocols to complement their functionality from an energy-efficiency perspective. We show that this technique scales well with increased network traffic and population. We also compare it to the on-demand power management algorithm, a technique specifically designed to reduce idle energy consumption. Our comparison shows that our technique performs better in terms of energy savings and fairness as well as network lifetime extension.
A large number of ractical sensing and actuating applications require immediate notification of rare but urgent events and also fast delivery of time sensitive actuation commands. In this a er,we consider the design o...
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ISBN:
(纸本)9781595933683
A large number of ractical sensing and actuating applications require immediate notification of rare but urgent events and also fast delivery of time sensitive actuation commands. In this a er,we consider the design of efficient wakeup scheduling schemes for energy constrained sensor nodes that adhere to the bidirectional end-to-end delay constraints posed by such applications. We evaluate several existing scheduling schemes and propose novel scheduling methods that outperform existing *** also resent a new family of wakeu methods,called multi-parent schemes, which take a cross-layer a roach where multiple routes for transfer of messages and wakeup schedules for various nodes are crafted in synergy to increase longevity while reducing message delivery latencies. We analyze the power-delay and lifetime-latency tradeoffs for several wakeup methods and show that our proposed techniques significantly improve the performance and allow for much longer network lifetime while satisfying the latency constraints.
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