Delay threshold scheduling algorithm for LTE downlink systems
by Fu-Min Chang; Hsiu-Lang Wang; Po-Hsueh Wang; Shang-Juh Kao
International Journal of Wireless and Mobile Computing (IJWMC), Vol. 18, No. 4, 2020

Abstract: This paper proposes a delay threshold scheduling (DTS) algorithm for the scheduling of requests in real-time multimedia applications using LTE downlink systems, which takes into account channel conditions as well as the packet waiting time. Delay thresholds were adopted to enable the differentiation of packets in conjunction with proportional weighting between channel conditions and packet waiting time for the prioritisation of real-time services. Simulation results demonstrate that compared to the results obtained using Modified Largest Weighted Delay First (M-LWDF), Exponential Proportional Fair (EXP/PF), and Channel Dependent Earliest Due Date (CD-EDD), the proposed DTS algorithm is able to increase video traffic throughput and decrease packet delays and the packet loss ratio for real-time services.

Online publication date: Thu, 16-Jul-2020

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