Analysis of the Failure Tolerance of Linear Access Networks

Frédéric Giroire 1 Juan-Carlos Maureira 2
1 COATI - Combinatorics, Optimization and Algorithms for Telecommunications
CRISAM - Inria Sophia Antipolis - Méditerranée , Laboratoire I3S - COMRED - COMmunications, Réseaux, systèmes Embarqués et Distribués
Abstract : In this paper, we study the disconnection of a moving vehicle from a linear access network composed by cheap WiFi Access Points in the context of the telecommuting in massive transportation systems. In concrete, we analyze the probability for a user to experience a disconnection longer than a threshold t∗, leading to a disruption of all on-going communications between the vehicle and the infrastructure network. We provide an approximation formula to estimate this probability for large networks. We then carry out a sensitivity analysis and supply a guide for operators when choosing the parameters of the networks. We focus on two scenarios: an intercity bus and an intercity train. Last, we show that such systems are viable, as they attain a very low probability of long disconnections with a very low maintenance cost.
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Frédéric Giroire, Juan-Carlos Maureira. Analysis of the Failure Tolerance of Linear Access Networks. [Research Report] RR-8903, CNRS, University of Nice Sophia Antipolis, I3S, UMR 7271, COATI, Inria, 06900 Sophia Antipolis, France; Center of Mathematical Modeling, University of Chile, Chile; Inria Sophia Antipolis. 2016. ⟨hal-01308241⟩

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