Slow transitions and starvation in dense random-access networks

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Abstract

We consider dense wireless random-access networks, modeled as systems of particles with hardcore interaction. The particles represent the network users that try to become active after an exponential back-off time, and stay active for an exponential transmission time. Due to wireless interference, active users prevent other nearby users from simultaneous activity, which we describe as hardcore interaction on a conflict graph. We show that dense networks with aggressive back-off schemes lead to extremely slow transitions between dominant states, and inevitably cause long mixing times and starvation effects. Keywords: Hitting times, Mixing times, Starvation phenomena, Throughput analysis, Wireless random-access networks
Original languageEnglish
Pages (from-to)361-402
JournalStochastic Models
Volume31
Issue number3
DOIs
Publication statusPublished - 2015

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