Using a Link Metric to Improve Communication Mechanisms and Real-Time Properties in an Adaptive Middleware for Heterogeneous Sensor Networks

Authors:
Edison Pignaton Freitas;Tales Heimfarth;Marco Aurélio Wehrmeister;Flávio Rech Wagner;Armando Morado Ferreia;Carlos Eduardo Pereira;Tony Larsson
Affiliations:
School of Information Science, Computer and Electrical Engineering, Halmstad University, Halmstad, Sweden and Institute of Informatics, Federal University of Rio Grande do Sul, Brazil;Institute of Informatics, Federal University of Rio Grande do Sul, Brazil;Institute of Informatics, Federal University of Rio Grande do Sul, Brazil;Institute of Informatics, Federal University of Rio Grande do Sul, Brazil;Military Institute of Engineering, Brazil;Institute of Informatics, Federal University of Rio Grande do Sul, Brazil and Electrical Engineering Department, Federal University of Rio Grande do Sul, Brazil;School of Information Science, Computer and Electrical Engineering, Halmstad University, Halmstad, Sweden
Venue:
ISA '09 Proceedings of the 3rd International Conference and Workshops on Advances in Information Security and Assurance
Year:
2009

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Abstract

This paper presents middleware mechanisms to support real-time services in heterogeneous sensor networks, focusing on the evaluation of link metrics. Heterogeneous sensor networks require specific QoS (quality of service) guarantees in order to allow the coordination and cooperation among the different nodes that compose the system. In order to improve QoS, one of the first steps is to enhance the usage of the communication links, aiming at a more reliable and efficient message exchange. In this paper, key middleware features to address this concern are presented, in which a focus is given on the use of a link metric that, as part of a protocol, is used to optimize the message forwarding in relay communications across the network. Additionally, preliminary results are also presented.