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Chase–escape in dynamic device-to-device networks

Published online by Cambridge University Press:  07 August 2023

Elie Cali*
Affiliation:
Orange S.A.
Alexander Hinsen*
Affiliation:
Weierstrass Institute Berlin
Benedikt Jahnel*
Affiliation:
Weierstrass Institute Berlin & Technische Universität Braunschweig
Jean-Philippe Wary*
Affiliation:
Orange S.A.
*
*Postal address: Orange Labs, 44 Avenue de la République, 92320 Châtillon, France.
***Postal address: Weierstrass Institute for Applied Analysis and Stochastics, Mohrenstraße 39, 10117 Berlin, Germany.
***Postal address: Weierstrass Institute for Applied Analysis and Stochastics, Mohrenstraße 39, 10117 Berlin, Germany.
*Postal address: Orange Labs, 44 Avenue de la République, 92320 Châtillon, France.

Abstract

We feature results on global survival and extinction of an infection in a multi-layer network of mobile agents. Expanding on a model first presented in Cali et al. (2022), we consider an urban environment, represented by line segments in the plane, in which agents move according to a random waypoint model based on a Poisson point process. Whenever two agents are at sufficiently close proximity for a sufficiently long time the infection can be transmitted and then propagates into the system according to the same rule starting from a typical device. Inspired by wireless network architectures, the network is additionally equipped with a second class of agents able to transmit a patch to neighboring infected agents that in turn can further distribute the patch, leading to chase–escape dynamics. We give conditions for parameter configurations that guarantee existence and absence of global survival as well as an in-and-out of the survival regime, depending on the speed of the devices. We also provide complementary results for the setting in which the chase–escape dynamics is defined as an independent process on the connectivity graph. The proofs mainly rest on percolation arguments via discretization and multiscale analysis.

Information

Type
Original Article
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of Applied Probability Trust

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