CHANTS 2017

Poster: Beyond Static Sending Intervals for Sensor Node Energy Estimation, Silvia Krug^1,2, Axl Schreiber¹, Michael Rink¹

¹IMMS Institut für Mikroelektronik- und Mechatronik-Systeme gemeinnützige GmbH ; ²Communication Networks Group, Technische Universität Ilmenau, Germany

Abstract: Several aspects have to be considered in order to develop energy efficient sensor networks with a lifetime of several years under outdoor conditions. These aspects include the battery types, the energy consumption of the platform for various operational states as well as several other aspects such as the communication pattern influenced by the position in the network and the propagation conditions. In this paper, we present results from a long term measurement study to characterize the traffic required to transfer the required sensor data and analyze the required overhead. Our results show that simple assumptions on sending intervals do not reflect reality and need to be reconsidered when modeling the energy consumption of sensor nodes, especially under harsh environmental conditions.

Poster: Utilization of Additional Nodes in Hybrid DTN-MANET Scenarios, Silvia Krug^1,2, Max Helbig¹, Jochen Seitz¹

¹Communication Networks Group, Technische Universität Ilmenau, Germany; ²IMMS Institut für Mikroelektronik- und Mechatronik-Systeme gemeinnützige GmbH

Abstract: In case of disasters, efficient and robust communication is essential. Hybrid network architectures combining traditional mobile ad hoc networks (MANETs) and delay tolerant networks (DTNs) have been proposed to achieve both aspects. The combination is needed to handle intermittent connectivity. However, the DTN principles cause additional delay that should be minimized. Nodes that are deployed in addition to the devices carried by rescue workers are one option to enhance connectivity and thus limit the delay. These nodes could be placed at fixed positions or be mobile eventually with controllable mobility. In this paper, we first present a simulation model to enable the evaluation of such additional nodes and present their impact on the DTN routing protocol performance in a realistic disaster scenario. Our results show that additional nodes are able to provide better connectivity, but current DTN protocols are not able to utilize them efficiently.