Quantifying the impact of scheduling and mobility on IR-UWB localization in body area networks

Abstract : —In the context of radiolocation in Wireless Body Area Networks (WBANs), nodes positions can be estimated through time-based ranging algorithms. For instance, the distance separating a couple of nodes can be estimated accurately by measuring the Round Trip Time of Flight of an Impulse Radio Ultra Wideband (IR-UWB) link. This measure usually relies on two or three messages transactions. Such exchanges take time and a rapid mobility of the nodes can reduce the ranging accuracy and consequently impact nodes localization process. In this paper, we quantify this localization error by confronting two broadcast-based optimized implementations of the three-way ranging algorithm with real mobility traces, acquired through a motion capture system. We then evaluate, in the same scenarios, the impact of the MAC-level scheduling of the packets within a TDMA frame localization accuracy. The results, obtained with the WSNet simulator, show that MAC scheduling can be utilized to mitigate the effect of nodes mobility.
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Communication dans un congrès
IEEE International Conference on Wearable and Implantable Body Sensor Networks (BSN), Jun 2015, Cambridge, United States. 2015, 〈http://www.bsn2015.org/cfp.htm〉. 〈10.1109/BSN.2015.7299381〉
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Arturo Guizar, Anis Ouni, C Goursaud, C Chaudet, Jean-Marie Gorce. Quantifying the impact of scheduling and mobility on IR-UWB localization in body area networks. IEEE International Conference on Wearable and Implantable Body Sensor Networks (BSN), Jun 2015, Cambridge, United States. 2015, 〈http://www.bsn2015.org/cfp.htm〉. 〈10.1109/BSN.2015.7299381〉. 〈hal-01246920〉

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