期刊名称：International Journal of Wireless & Mobile Networks
印刷版ISSN：0975-4679
电子版ISSN：0975-3834
出版年度：2015
卷号：7
期号：5
页码：91
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：Long Term Evolution (LTE) network deploys Orthogonal Frequency Division Multiple Access (OFDMA)technology for downlink multi-carrier transmission. To meet the Quality of Service (QoS) requirements forLTE networks, packet scheduling has been employed. Packet scheduling determines when and how theuser’s packets are transmitted to the receiver. Therefore effective design of packet scheduling algorithm isan important discussion. The aims of packet scheduling are maximizing system throughput, guaranteeingfairness among users, andminimizing either or both PacketLoss Ratio (PLR)and packet delay. Inthis paper,the performance of two packet scheduling algorithms namely Log Maximum-Largest Weighted Delay First(LOG-MLWDF) and Max Delay Unit (MDU), developed for OFDM(Orthogonal Frequency DivisionMultiplexing)networks, has been investigated in LTE downlink networks, and acomparison of thosealgorithmswith a well-known scheduling algorithm namely Maximum-Largest Weighted DelayFirst(MLWDF) has been studied.The performance evaluation was in terms of system throughput, PLR andfairness index. This study was performed forboth real time (voice and video streaming)and non-real time(best effort)perspectives. Results show that for streaming flows,LOG-MLWDF shows best PLRperformance among the considered scheduling schemes, and for best effort flows, it outperforms theothertwo algorithms in terms of packet delay and throughput
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