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Wireless sensor networks (WSN) are widely used for environmental monitoring, healthcare, and surveillance. Their lifetime is strongly affected by energy consumption, which is partly attributed to retransmission. However, retransmission problems have not been well studied in the area of deployment optimization considering lifetime for WSN. In this paper, important models for lifetime, sensor failure,...
Multi-hop wireless sensor networks with a single Sink are attractive from a cost point of view. When battery-driven, these networks suffer from the energy hole problem, where the nodes near the Sink die first because they must forward the packets of all the other nodes in the network. In this paper, by developing an analytical model, we show how Cooperative Transmission (CT), when it is used to extend...
One of the primary mechanisms to mitigate idling energy consumption and reduce communication activities in Wireless Sensor Networks (WSNs) is to put nodes to low duty cycle operation as long as possible. Keeping a small time window (the listen period) is a challenging task, and thus requires appropriate tailoring of duty cycle so as not to compromise network performance. In this work, we explore an...
In this paper we propose an analytical model to detect and remove malicious nodes while taking into account MAC IEEE 802.15.4 beacon-enabled technology. The proposed solution called muDog enables to monitor nodes activities with a minimal energy consumption in order to detect the suspicious behavior particularly the non-cooperative nodes in the routing process. Moreover, we analyze the cost of the...
Communication privacy techniques that protect the locations of source sensor nodes and sink nodes have received significant attention recently. Several communication protocols that improve the capture time, which is the time it takes for an adversary to identify the location of the source, have been proposed and their effectiveness is analyzed using simulation models. A simple anonymous communication...
Wireless sensor networks (WSNs) require protocols that make judicious use of the limited energy capacity of the sensor nodes. In this paper, the potential performance improvement gained by balancing the traffic throughout the WSN is investigated. We show that sending the traffic generated by each sensor node through multiple paths, instead of a single path, allows significant energy conservation....
Wireless sensor networks (WSNs) require appropriate protocols that make judicious use of the finite energy resources of the sensor nodes. In this paper, we investigate the potential energy conservation achieved by balancing the traffic throughout the WSN. We show that distributing the traffic generated by each sensor node through multiple paths instead of using a single path allows significant energy...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
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