Conference Paper

Sensor node lifetime: An experimental study

Networking Lab., Univ. of Appl. Sci. of Southern Switzerland, Manno, Switzerland
DOI: 10.1109/PERCOMW.2011.5766869 Conference: Pervasive Computing and Communications Workshops (PERCOM Workshops), 2011 IEEE International Conference on
Source: IEEE Xplore

ABSTRACT Node lifetime is a key performance metric in wireless sensor network (WSN) research. Simplistic assumptions and naïve lifetime estimation techniques invariably prove to be extremely unreliable in practice, to the point that premature battery depletion notoriously affects real-world deployments. In this paper we adopt an experimental approach and employ various types of real-world batteries to determine the actual lifespan of a sensor node under common operating conditions. We present a rich set of results from an extensive experimental campaign based on the widely used TelosB platform running TinyOS. We have measured the actual node lifetime using various brands of commercial batteries as a function of different combinations of application parameters. Some of our observations match previously published results that are often neglected, while others underscore less known properties of low-power radios.

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    ABSTRACT: Wireless sensor networks (WSNs) have been the focus of many research works. Nowadays, because of the time-critical tasks of several WSN applications, one of the new challenges faced by WSNs is handling real-time storage and querying the data they process. This is the real-time database management on WSN and it deals with time-constrained data, time-constrained transactions, and limited resources of wireless sensors. Developing, testing, and debugging this kind of complex system are time-consuming and hard work. The deployment is also generally very costly in both time and money. Therefore in this context, the use of a simulator for a validation phase before implementation and deploying is proved to be very useful. The aim of this paper is to describe the different specificities of real-time databases on WSN and to present a model for a simulation framework of the real-time databases management on WSN that uses a distributed approach. Then, the model of the simulator is described and developed in Java and a case study with some results demonstrates the validity of the structural model.
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    6th ACM international workshop on Wireless Network Testbeds, Experimental evaluation and characterization (WiNTECH '11) - Poster Session; 09/2011
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    Algorithms and Architectures for Parallel Processing, Edited by Aversa, Rocco and Kołodziej, Joanna and Zhang, Jun and Amato, Flora and Fortino, Giancarlo, 01/2013: pages 276-284; Springer International Publishing., ISBN: 9783319038889

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