Privacy preserving control of uplink cellular wireless networks using hybrid ARQ

Abstract

We consider the problem of cross-layer resource allocation in a time-varying cellular wireless networks, in which the transmitter only knows the distribution of channel gains, and incorporate information theoretic secrecy as a Quality of Service constraint. Particularly, each node in the network injects two types of traffic, private and open, at rates chosen in order to maximize a global utility function function subject to stability of the data queues, and a constraint on the privacy outage probability. Our scheme is based on hybrid ARQ transmission with incremental redundancy. We prove that our scheme achieves a utility, arbitrarily close to the maximum achievable utility. Numerical experiments are performed to verify the analytical results, and to show the efficacy of the dynamic control algorithm.