A quantized water-filling packet scheduling scheme for downlink transmissions in LTE-Advanced systems with Carrier Aggregation

Abstract

Carrier Aggregation (CA) is one of the promising features in Long Term Evolution-Advanced (LTE-A) systems. Till now, works regarding the packet scheduling scheme with CA in different frequency bands have not completely been studied and evaluated yet. Thus, the purpose of this work aims to explore such issue and presents an efficient quantized water-filling packet scheduling algorithm for high-data-rate nomadic users in such LTE-A systems. An upper bound of the mean packet delay is derived and simulation results are also obtained. When compared with the mean packet delay of a system in which component carriers are not aggregated but used independently, the presented scheme is shown to have significant improvement.