Abstract:

Scheduling is one of important tasks of base station in telecomunication systems in general and LTE network in particular. This paper presents a scheduling algorithm based on Quality of Experience (QoE, determined using the extended E-model), channel-aware and Quality of Service (QoS) in LTE downlink network. Voice is one of services which are very sensitive to network impairments such as delay, packet loss, network jitter, etc. The proposed scheduler is built based on the extended E-model and Maximum Queue Size (MQS) which are essential factors to determine the priority metric. The simulation results show that the proposed scheduler not only meets the QoS requirements for voice service but also outperforms several other typical schedulers such as FLS, M-LWDF, EXP/PF in terms of delay, cell throughput, fairness index and spectral efficiency. In addition, the proposed scheduler also improves significantly packet loss rate in LTE network.