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Modeling and evaluation of the end-to-end delay in wireless sensor networks

Abstract : In this thesis, we propose an approach that combines both measurements and analytical approaches for infering a Markov chain model from the MAC protocol execution traces in order to be able to estimate the end to end delay in multi-hop transmission scenarios. This approach allows capturing the main features of WSN. Hence, a suitable Markov chain for modelling the WSN is infered. By means of an approach based on frequency domain analysis, end to end delay distribution for multi-hop scenarios is found. This is an important contribution of our approach with regard to existing analytical approaches where the extension of these models for considering multi-hop scenarios is not possible due to the fact that the arrival distribution to intermediate nodes is not known. Since local delay distribution for each node is obtained by analysing the MAC protocol execution traces for a given traffic scenario, the obtained model (and therefore, the whole end to end delay distribution) is traffic-dependant. In order to overcome this problem, we have proposed an approach based on non-linear regression techniques for generalising our approach in terms of the traffic rate. Results were validated for different MAC protocols (X-MAC, ContikiMAC, IEEE 802.15.4) as well as a well-known routing protocol (RPL) over real test-beds (IOT-LAB).
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Submitted on : Thursday, March 29, 2018 - 1:26:57 PM
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Francois Despaux. Modeling and evaluation of the end-to-end delay in wireless sensor networks. Other [cs.OH]. Université de Lorraine, 2015. English. ⟨NNT : 2015LORR0100⟩. ⟨tel-01751796⟩



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