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In this paper we introduce a voice capture application using a wireless sensor network; our main contribution is the integration of a novel capture technique specifically designed for hierarchical wireless sensor networks. Furthermore, we show the challenges involved in the implementation of our experimental prototype which is oriented towards a secure ubiquitous home environment but could be extended...
A wireless sensor network can be formed by nodes from different manufacturers, as long as their radio component enables communication with each other. Sometimes it is necessary to change the program in the nodes and several over-the-air reprogramming mechanisms have been proposed for that purpose. We base our work in one of such mechanisms, Deluge, adding some important contributions: we allow the...
Monitoring the environment is one of the main applications of wireless sensor networks. Given that these networks are densely populated and that local variations in the environmental variables are small, a large amount of redundant data is generated by sensor nodes. In this paper we present a protocol for data dissemination in hierarchical sensor networks that integrates security and reduces communication...
The emergence of wireless sensor networks (WSN) and RFID technology are starting to make the ubiquitous computing vision a reality, as they provide the means to obtain information about physical phenomena and entities. However, there is a great need for higher abstraction levels, as the integration of these technologies into current ubiquitous computing systems is still primitive. This problem is...
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