Scalable multi-dimensional range queries and routing in data-centric sensor networks
Proceedings of the 3rd international conference on Scalable information systems
A FCM-based peer grouping scheme for node failure recovery in wireless P2P file sharing
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Journal of Network and Computer Applications
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Sensor networks are usually composed by small units able to sense and transmit to a sink elementary data which are successively processed by an external machine. How- ever recent improvements in the memory and computational power of sensors, together with the reduction of energy consumptions, are rapidly changing the potential of such systems, moving the attention towards data-centric sensor networks. This paper presents W*-Grid, a fully decen- tralized and robust infrastructure for self-organizing data- centric sensor networks, where wireless communications occur through multi-hop routing among devices. The so- lution extends W-Grid by strongly improving the network recovery performance from link and/or device failures. In particular W*-Grid guarantees, by construction, at least two disjoint paths between each couple of nodes. This im- plies that the recovery in W*-Grid occurs without broad- casting transmissions and guaranteeing robustness while drastically reducing the energy consumption. An extensive number of simulations show the efficiency, robustness and traffic load of resulting networks under several scenarios of device density and of number of coordinates.