Rate control and fairness scheduling for downlink utility-based power control systems

In this paper, we treat the rate control and fairness scheduling problem for downlink UBPC systems. An hierarchical rate allocation scheme is proposed, which is based on the analytical performance analysis for the physical-layer constraints in the UBPC system. Using such a rate control algorithm together with the opportunistic fairness scheduling scheme, the UBPC system achieves rate allocation more fairly in the sense that the instantaneous system throughput and the number of feasible users can be maximized, and meanwhile the long-term fairness can be well guaranteed. We present the simulation results to demonstrate the performance of the proposed algorithms in terms of the throughput and the fairness.