Asian Journal of Engineering and Technology Innovation

Comparative Analysis of MAC Scheduling Algorithms in Long Term Evolution Networks using NS3

Mohnish Jha, Kumar Prateek,Nitin Jaiswal, Abhinav Anand, Shilpa Chaudhari

Reva Institute of Technology and Management, Rukmini Knowledge Park, Kattigenahalli, Yelahanka, Near Border Security  Bustop, Bengaluru, Karnataka-560064, India.

Abstract

Best effort data network does not guarantee real-time transmission of data. Such network is not suitable for real-time applications. Long Term Evolution (LTE) networks guarantee the high data rates that require MAC scheduler at base station called as anode to which User Equipments (UEs) are connected. The scheduler allocates the available radio resources for high data rate application among the connected UEs. Improper allocation largely impacts the throughput. Comparison of different scheduling algorithms would help in understanding their performance that helps in designing the improved scheduler at the eNodeB. In this paper, the performance of three most popular LTE MAC schedulers is studied. The Round Robin, Priority Set Scheduler and Proportional Fair schedulers are simulated in NS3.24 using LTE scenario transmitting real-time voice packets with various channel conditions of the UE for observing the performance of each scheduler through various QoS parameters such as throughput, delay and jitter. It is observed that the performance of the round robin scheduler is better compared to the other two in terms of throughput, delay and jitter at uplink as well as downlink. 

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