Géolocalisation et communication en situation de crise

Abstract : In the aftermath of a natural or industrial disaster, locating individuals is crucial for first responders. However, disasters can cause extensive damage to the network infrastructures and a generalized loss of communication among survivors. In this thesis, we present a network support solution that provides a post-disaster geolocation-collecting service that relies on inter mobile device connections. On top of this dynamically built network, survivors' mobile device that get into contact exchange information about geolocation of others they have encountered and risk areas they have seen. Such information is routed towards pre-defined data collection centers, endowed with resilient processing and storage equipment, where first-responders can exploit it. Whe also present our mobility model, specific to crisis situations, that we used to conduct experiments on the ONE simulator. We evaluate the effect of different parameters of mobility and communication on our system performances. We especially analyse the impact of the proportion of motionless people. The feasability of our architecture has also been validated through the building of a physical test platform, based on pico-computers (Raspberry Pi). We finally contributed to define a new local centrality metric for time varying graphs, which could be used to infer useful information for routing.
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Florent Coriat. Géolocalisation et communication en situation de crise. Réseaux et télécommunications [cs.NI]. Sorbonne Université, Faculté des Sciences et Ingénierie, 2018. Français. ⟨tel-01970777⟩

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