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Descripción
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| During the last decade, we have witnessed the rapid growth and adoption of wireless technology and the deployment of wireless local and personal area networks. Wireless Sensor Networks can perfectly be taken as an example. However, these facts have also brought about issues that have to be addressed, such as spectrum scarcity and inter-systems interference, to name a few. Cognitive Radio techniques aim to provide dynamic spectrum access by sensing and evaluating the communication conditions in each frequency band and detecting white spaces within them. Therefore, the interference level might be reduced, as the most suitable band is chosen, and the spectrum is used in an opportunistic and more reasonable way. Information sharing and collaboration between nodes, behavior learning and Cognitive Radio applied to Wireless Sensor Networks have raised a new concept known as Cognitive Wireless Sensor Network. Performance in these networks can be optimized regarding a specific parameter or metric such as power consumption or reliability. Despite the fact there is an important research effort in these topics, just a few implementations of nodes have been carried out. Most of them put their emphasis on spectrum sensing, data acquisition and radio parameters reconfiguration, but they can only access to a single frequency band. Commercial nodes with more radio interfaces are designed to serve as gateways. In this work, the firmware of a Cognitive Wireless Sensor Network node with access to three unlicensed frequency bands is described. The node uses an adaptation of Microchip's MiWi? IEEE 802.15.4 standard-based protocol stack. | |
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Internacional
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Si |
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Nombre congreso
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ETRAN International Conference on Electrical, Electronic and Computing Engineering |
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Entidad organizadora
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ETRAN |
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Nacionalidad Entidad
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Sin nacionalidad |
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Lugar/Ciudad de impartición
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Zlatibor |
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Fecha inicio
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03/06/2013 |
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Fecha fin
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06/06/2013 |