Title :
Trade-off analysis of QoS-aware configurable LTE downlink schedulers
Author :
Gemici, Omer Faruk ; Hokelek, Ibrahim ; Cirpan, Hakan Ali
Author_Institution :
Res. Center for Adv. Technol. on Inf. & Inf. Security, TUBITAK BILGEM, Gebze/Kocaeli, Turkey
Abstract :
The voice, video, and data traffic can be carried as IP packets over Long Term Evolution (LTE) networks which bring the cellular communication to the fourth generation (4G) era. LTE enables this digital convergence by offering higher capacity, including inherent IP support in its architecture, and supporting multi-user diversity scheduling. However, recent increases in Voice over IP (VoIP) and video traffic usage require the prioritization of the real-time traffic to meet its stringent QoS requirements. In this paper, the existing Round Robin and Best CQI schedulers are enhanced to enable the QoS support to the real-time traffic. For both schedulers, a configurable parameter, which determines the degree of priority level, is introduced so that the real-time traffic throughput can be administratively controlled without jeopardizing the overall network performance. Simulation results demonstrate the trade-off among the real-time traffic throughput, the overall system throughput and the overall system fairness for various scenarios.
Keywords :
4G mobile communication; IP networks; Internet telephony; Long Term Evolution; cellular radio; quality of service; scheduling; telecommunication traffic; video communication; 4G cellular communication; IP packets; Long Term Evolution network; QoS-aware configurable LTE downlink schedulers; VoIP; best CQI schedulers; configurable parameter; data traffic; digital convergence; fourth generation cellular communication; multiuser diversity scheduling; priority level degree; real-time traffic throughput; round robin schedulers; trade-off analysis; video traffic; voice over IP; Downlink; Indexes; Long Term Evolution; Quality of service; Real-time systems; Round robin; Throughput; LTE; QoS; downlink scheduler;
Conference_Titel :
Telecommunications (ICT), 2013 20th International Conference on
Conference_Location :
Casablanca
Print_ISBN :
978-1-4673-6425-6
DOI :
10.1109/ICTEL.2013.6632115