A Heavy Traffic Approach for Queue-Aware Power Control in Interfering Wireless Links

Publication Type:

Conference Paper

Source:

Proc. IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Cesme, Turkey (2012)

Abstract:

In this work, we address the problem of power allocation for interfering transmitter-receiver pairs so that the probability that each queue length exceeds a specified threshold is fixed at a desired value. One application is satisfying QoS requirements in a dense cellular network. We address this problem using heavy traffic approximation techniques which lead to an asymptotic model described by a (controlled) stochastic differential equation. The power control strategy consists in allocating most of the power according to the wireless channel state and a smaller fraction according to the queue lengths. Simulation results in a simple setting illustrate that the proposed control policy can yield desirable results in practical systems.