Delay threshold scheduling algorithm for LTE downlink systems. (3rd July 2020)

• Record Type: Journal Article
• Authors: Chang, Fu-Min; Wang, Hsiu-Lang; Wang, Po-Hsueh; Kao, Shang-Juh
• Is Part Of: International journal of wireless and mobile computing. Volume 18:Number 4(2020)
• Page Start: 320
• Page End: 331
• Publication Date: 2020-07-03
• Subjects: radio horizon -- irregular terrain modelling -- path loss -- earth bulge -- two-ray ground reflection model -- radio propagation; Mobile computing -- Periodicals; Wireless communication systems -- Periodicals; 004.6
• Languages: English
• ISSNs: 1741-1084

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.