There has been considerable interest in energy harvesting for wireless sensor networks. Energy harvesting from thermal sources such as body heat and mechanical sources such as human motion have been proposed. There are also sensor network systems that ...

Wireless Sensor Network (WSN) software is typically organized as a set of modules and depending on the application only necessary modules are selected, compiled and installed on a sensor node. This software flexibility is currently not matched by ...

We present a modular sensor network platform capable of supporting a wide range of applications. We developed a platform to support a broad spectrum of scenarios, instantiating our system for applications on the ground, in the water, and in the air. Our ...

To ensure a long lifetime, sensor networks must operate with a low duty cycle, but the duty cycle must be high enough for the network to handle expected peak traffic loads. Being dimensioned for peak traffic rather than regular traffic leads to shorter ...

Cluster transmission, also called Concurrent Cooperative Transmission (CCT) in this paper, enables a collection of power-constrained embedded sensors to transmit as a group and achieve a transmit range that is much greater than the range of a single ...

We study the suitability of IPv6/6LowPan protocols under heterogeneous traffic loads in environmental sensor networks: microclimate nodes generating periodic but low-bandwidth data, while multimedia nodes generating high-bandwidth data streams on demand, ...

There is a long-standing dispute on whether and when thread-based programming should be preferred over the event-based paradigm. This dispute has also extended into the wireless sensor networks domain. Many existing operating systems rely on events due ...

This paper discusses our experience in designing and deploying a 994-node sensor network to measure the social contact network of a high school over one typical day. The system aims to capture interactions of human subjects for the study of infectious ...

Wireless Sensor Networks have been deployed for environmental monitoring, home automation, and advanced metering application fields among others. Only few examples of monitoring cargo transports by Wireless Sensor Networks have been reported on. The ...

In this paper we develop algorithms and hardware for the autonomous gathering of cattle. We present a comparison of three different autonomous gathering algorithms that employ sound and/or electric stimuli to guide the cattle. We evaluate these ...

Today more and more wireless sensors are powered by batteries. To avoid frequent battery replacement and to provide easy maintenance, sensor nodes should operate energy-efficiently. One well-known and significant source of energy drainage is radio idle ...

The availability of multiple frequency channels on modern radios has provided a way to improve networking performance. Nevertheless, current multi-channel protocols lack the architectural consistency and flexibility to support a diverse set of ...