This paper considers the problem of monitoring cane toads in Kakadu National Park using a large scale wireless sensor network deployment. Cane toads were mistakenly introduced in Australia in 1935. Their uncanny ability to survive in diverse climates and lack of natural predators in the Australian ecosystem have promoted unhindered growth of cane toads for the last 68 years. This application is...

The Deployment-Support Network (DSN) is a new, minimal invasive methodology for developing and testing wireless sensor networks (WSN) in a realistic environment. A device under test, e.g. a target sensor network is augmented with a redundant wireless backbone network and a second set of nodes to carry out the testing logic. Enabling a developer to test a live application scenario on the actual ...

This paper considers distributed estimation over heterogeneous sensor networks. We propose a distributed estimation strategy based on PageRank algorithm, where the link weight depends on the edge estimation covariances. We prove that the proposed estimator obtains better estimates than one typical estimator under identical initial conditions. Motivated by the advantage of the sensors with high ...

In wireless sensor networks (WSNs), nodes closer to the sink node have heavier traffic load for packet forwarding. The unbalanced power consumption among sensor nodes may cause network partition. This paper proposes efficient node placement and topology control protocols to balance the power consumption of sensor nodes. Firstly, a virtual tree topology is constructed based on Grid-based WSNs. T...

extensive researches on wireless sensor networks (wsns) have been performed and many techniques have been developed for the data link (mac) layer. most of them assume single-channel mac protocols. in the usual dense deployment of the sensor networks, single-channel mac protocols may be deficient because of radio collisions and limited bandwidth. hence, using multiple channels can significantly ...

In hybrid wireless sensor networks composed of both static and mobile sensor nodes, the random deployment of stationary nodes may cause coverage holes in the sensing field. Hence, mobile sensor nodes are added after the initial deployment to overcome the coverage holes problem. To achieve optimal coverage, an efficient algorithm should be employed to find the best positions of the additional mo...

Due to the resource constraints on sensor networks, many recent key management schemes exploit the location of nodes in order to establish pairwise keys. Despite these efforts, location discovery for sensor networks is very difficult, because existing schemes have failed to consider changes in the signal range and the deployment error. As a result, network performance may accidentally decrease,...

This paper uses multi-objective evolutionary algorithms for wireless sensor node deployment which system model abstracted from the task-level modeling. And the multi-objective evolutionary algorithms have been improved for existing features in the design of wireless sensor node deployment. Individual coding is designed to avoid encoding and decoding of individual redundancy. And Pareto optimal ...