A Downlink Scheduling Scheme for Trunking Multimedia Services in LTE Public Networks

Abstract

Integrating trunking multimedia services into LTE public networks is becoming an innovation and research focus. But several aspects have to be considered for providing effective multimedia services to trunking mobile users. In particular, in this work, we design a packet scheduler for real-time downlink communication, considering both the QoS and the priority of user equipment (UE). To this aim, we exploit an innovative approach based on discrete-time linear control (DTLC) theory to satisfy the QoS requirements and add the priority of UE to determine the priority order in which the services should be scheduled. The performance of the proposed scheme has been evaluated by theory and simulations. A comparison with recently proposed scheduling strategies has also been presented. Results have clearly shown that the proposed approach is able to greatly outperform the existing ones especially in the presence of real-time video flows.