The literature on cross-layer protocols, protocol improvements, and design methodologies
for wireless sensor networks (WSNs) is reviewed and a taxonomy is proposed. The …

We consider routing security in wireless sensor networks. Many sensor network routing
protocols have been proposed, but none of them have been designed with security as a …

We present TinyOS, a flexible, application-specific operating system for sensor networks,
which form a core component of ambient intelligence systems. Sensor networks consist of …

It is often useful to know the geographic positions of nodes in a communications network, but
adding GPS receivers or other sophisticated sensors to every node can be expensive. We …

We present Trickle, an algorithm for propagating and maintaining code updates in wireless
sensor networks. Borrowing techniques from the epidemic/gossip, scalable multicast, and …

It is often useful to know the geographic positions of nodes in a communications network, but
adding GPS receivers or other sophisticated sensors to every node can be expensive. MDS …

An SDP relaxation based method is developed to solve the localization problem in sensor
networks using incomplete and inaccurate distance information. The problem is set up to …

As the field of communications networks continues to evolve, the challenging area of
wireless sensor networks is rapidly coming of age. Recent advances have made it possible …

We describe an SDP relaxation based method for the position estimation problem in
wireless sensor networks. The optimization problem is set up so as to minimize the error in …

We propose an approach that uses connectivity information-who is within communications
range of whom-to derive the locations of nodes in a network. The approach can take …