Design of sensor networks with guaranteed connectivity and lifetime
WICON '07 Proceedings of the 3rd international conference on Wireless internet
Multihop/Direct Forwarding (MDF) for static wireless sensor networks
ACM Transactions on Sensor Networks (TOSN)
Integrated clustering and routing strategies for large scale sensor networks
NETWORKING'07 Proceedings of the 6th international IFIP-TC6 conference on Ad Hoc and sensor networks, wireless networks, next generation internet
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In this paper we address the problem of optimal data gathering inwireless sensor networks (WSN). The goal of this work is to developalgorithms and techniques in order to minimize the data delivery latencyand at the same time balance the energy consumption among thenodes, so as to maximize the network lifetime. Following anincremental-complexity approach, several mathematical programming problems are proposed with focus on different network aspects. First, the static routing problem is formulated for large and dense WSNs.Then, an accurate network model is proposed that captures the tradeoffbetween the data delivery latency and the network energy consumptionby modeling the interactions among the routing, medium access control and physical layers. Finally, we consider dynamic rerouting and scheduling.For each problem we provide extensive simulations results for referencescenarios. The proposed models provide a deeper insight into the problem of timely and energy efficient data gathering. Along with the simulation results reported here they provide useful guidelines for the design of effective WSNs.