A New Hybrid Weighted Exponential-Logarithm (HWEL) Scheduler for Modification of QoS Parameters of 4G Cellular Networks

Authors

1 Department of Computer Engineering, College of Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran

2 Department of Electrical Engineering, College of Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran

Abstract

In recent cellular networks, the real-time broadcast of multimedia contents such as VoIP and Video traffics is increasingly becoming common. In this regard, 4G/LTE networks have been introduced due to providing high speed data along with QoS assurance, more security, and ultimately customer satisfaction. To accomplish these goals, radio resources management is a critical requirement and then schedulers are used in order to allocate the resources as Channel-Aware/QoS-Aware for the various traffics. One of the most important and effective schedulers is known as EXP RULE method; however these networks requires to improve in some of QoS parameters such as Packet Loss Rate (PLR) and Delay values to achieve further real-time information. In this paper, a new scheduling called Hybrid Weighted Exponential-Logarithm (HWEL) scheduler has been proposed to improve the PLR and Delay especially and improve the other QoS parameters generally in 4G/LTE networks. By performing simulations and comparisons between EXP-Rule and HWEL methods using LTE-Sim package for VoIP and Video traffics, it is observed that the proposed scheduler is a very good candidate to improve delay, PLR, throughput and fairness in the video traffics up to 21%, 29.8%, 7.8% and 1.1% and improve delay and PLR in the VoIP traffics up to 23.5% and 0.7% respectively.

Keywords

References

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TABRIZ JOURNAL OF ELECTRICAL ENGINEERING
Volume 48, Issue 4 - Serial Number 86
February 2018
Pages 1437-1449

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