Source: J. Appl. Probab. Volume 46, Number 3
(2009), 844-865.
We analyse an ALOHA-type random multiple-access protocol where
users have local interactions. We show that the fluid model of the
system workload satisfies a certain differential equation. We
obtain a sufficient condition for the stability of this
differential equation and deduce from that a sufficient condition
for the stability of the protocol. We discuss the necessary
condition. Furthermore, for the underlying Markov chain, we
estimate the rate of convergence to the stationary distribution.
Then we establish an interesting and unexpected result showing
that the main diagonal is locally unstable if the input rate is
sufficiently small. Finally, we consider two generalisations of
the model.
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