QoS Aware Mixed Traffic Packet Scheduling in OFDMA-Based LTE-Advanced Networks
In this paper, a packet scheduling framework is proposed for LTE-Advanced downlink transmission. The proposed framework adds the new functionality of an adaptive TD scheduler with built-in congestion control to the existing conventional Quality of Service (QoS) aware packet scheduling algorithms. It optimizes multiuser diversity in both the time and frequency domains by jointly considering the channel condition, queue status and the QoS feedback. The framework aims to improve the system spectral efficiency by optimizing the use of available resources while maintaining QoS requirements of different service classes and a certain degree of fairness among users.