Swap-Based Frequency-Domain Packet Scheduling Algorithm for Small-Queue Condition in OFDMA

Abstract

We propose an efficient frequency-domain packet scheduling (FDPS) for situations where some of the queues have a small amount of data available for transmission in downlink OFDMA-based systems. Under such small-queue condition, we first show that current FDPS proposals result in sub-optimal outcome, suffering from their isolated resource-assignment strategies. With our simple algorithmic solution, we demonstrate that better performance is achieved in terms of system throughput as well as fairness perspective, which is evaluated using 3GPP LTE system model simulations.