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Communication Dans Un Congrès Année : 2012

Delay Optimized Time Slot Assignment for Data Gathering Applications in Wireless Sensor Networks

Ridha Soua
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Pascale Minet

Résumé

Wireless sensor networks, WSNs, are an efficient way to deal with low-rate communications in confined environments such as mines or nuclear power plants because of their simplicity of deployment and low cost. In these application domains, WSNs are used to gather data from sensor nodes towards a sink in a multi-hop convergecast structure. In this paper, we focus on a traffic-aware time slot assignment minimizing the schedule length for tree topologies and for two special deployments (i.e. linear and multi-linear) representative of unusual environments. We formalize the problem as a linear program and provide results on the optimal number of slots. We then propose a delay optimized algorithm with two heuristics that minimize on the one hand the energy consumption and on the other hand the storage capacity as secondary criteria.
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Dates et versions

hal-00863359 , version 1 (20-09-2013)

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Citer

Ichrak Amdouni, Ridha Soua, Erwan Livolant, Pascale Minet. Delay Optimized Time Slot Assignment for Data Gathering Applications in Wireless Sensor Networks. ICWCUCA 2012 - International Conference on Wireless Communications in Unusual and Confined Areas, Aug 2012, Clermont Ferrand, France. pp.1 - 6, ⟨10.1109/ICWCUCA.2012.6402475⟩. ⟨hal-00863359⟩
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