National audience
Reconfigurable directional antennas (RDA) bring new opportunities to reduce data collision in wireless sensor networks (WSN). In this letter, a new reconfigurable directional antenna-based receiver-Initiated cycled receiver (RDA-RICER) medium access control (MAC) protocol is proposed for WSN nodes equipped with switched antennas. A low...
Most of the Wireless sensor netwot. Most of the Wireless sensor networks (WSN) are using passive Omni-Directionnal antennas (ODA). Reconfigurable Directional Antennas (RDA) have the potential to reduce data collision and increase the communication range when compared to ODA solution. In this paper, a comparison of two different RDA...
National audience
A fast growing class of sensing technology is wearable, where network nodes are tightly coupled with the human body. Wireless body area networks (WBAN) technology has gained popularity over the last few years, with a wide range of applications covered, in particular in health and rehabilitation. Wearable and pervasive computing are able to...
Wireless Sensor Networks (WSN) provide a powerful combination of distributed sensing, computing and wireless communication that can be useful in various applications (monitoring, health and fitness, environment, automotive, smart building, etc.). However, energy consumption is a critical issue in the deployment of battery-powered wireless...
In this paper, we propose a global power management approach for energy harvesting sensor nodes. Our approach is based on a joint duty-cycle optimization and transmission power control. By simultaneously adapting both parameters, the node can maximize the number of transmitted packets while respecting the limited and time-varying amount of...
To overcome the limited energy in battery-powered wireless sensor networks (WSNs), harvested energy is considered as a potential solution to achieve autonomous systems. A power manager (PM) is usually embedded in wireless nodes to adapt the computation load by changing their wake-up interval according to the harvested energy. In order to...
In this paper, a multi-source power manager (PM) is applied using different types of energy harvesting WSN. Specifically, this PM is embedded in both thermal and solar-powered WSN in order to adapt the consumed energy of the node by changing its wake-up period according to the harvested energy. Experimental results performed on real WSN...
In this paper, we propose a global power management approach for energy harvesting sensor nodes. Our approach is based on a joint duty-cycle optimization and transmission power control. By simultaneously adapting both parameters, the node can maximize the number of transmitted packets while respecting the limited and time-varying amount of...
In this paper, a multi-source power manager (PM) is applied using different types of energy harvesting WSN. Specifically, this PM is embedded in both thermal and solar-powered WSN in order to adapt the consumed energy of the node by changing its wake-up period according to the harvested energy. Experimental results performed on real WSN...
National audience
To design an autonomous Wireless Sensor Network(WSN), the harvested energy from environmental sources hasbeen considered as a potential solution for long-term operations.A power manager embedded in the energy harvesting WSNsadapts the power consumption and computation loads accordingto the harvested energy to obtain a theoretically infinite...
International audience
National audience
To design an autonomous Wireless Sensor Network(WSN), the harvested energy from environmental sources hasbeen considered as a potential solution for long-term operations.A power manager embedded in the energy harvesting WSNsadapts the power consumption and computation loads accordingto the harvested energy to obtain a theoretically infinite...
To extend the system lifetime of WSN, energy harvesting techniques have been considered as potential solutions forlong-term operations. Instead of minimizing the consumed energy as for the case of battery-powered systems, the harvesting node is adapted to Energy Neutral Operation (ENO) to achieve a theoretically innite lifetime. Therefore,...
To extend the system lifetime of WSN, energy harvesting techniques have been considered as potential solutions forlong-term operations. Instead of minimizing the consumed energy as for the case of battery-powered systems, the harvesting node is adapted to Energy Neutral Operation (ENO) to achieve a theoretically innite lifetime. Therefore,...