Optimization of ARQ Protocols in Interference Networks with QoS Constraints

Details Optimization of ARQ Protocols in Interference Networks with QoS Constraints Optimization of ARQ Protocols in Interference Networks with QoS Constraints

2010-09-20

arxiv.org/abs/1009.3961v1

Computer Science

Systems and Control

Scientific paper

We study optimal transmission strategies in interfering wireless networks, under Quality of Service constraints. A buffered, dynamic network with multiple sources is considered, and sources use a retransmission strategy in order to improve packet delivery probability. The optimization problem is formulated as a Markov Decision Process, where constraints and objective functions are ratios of time-averaged cost functions. The optimal strategy is found as the solution of a Linear Fractional Program, where the optimization variables are the steady-state probability of state-action pairs. Numerical results illustrate the dependence of optimal transmission/interference strategies on the constraints imposed on the network.

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