Title :
QoS Aware Packet Scheduling Algorithm for OFDMA Systems
Author :
Lei, Haipeng ; Fan, Chen ; Zhang, Xin ; Yang, Dacheng
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
In this paper, a downlink packet scheduling algorithm for OFDMA systems is proposed, which is based on the utility function to guarantee both the packet drop ratio and the play-out outage ratio of video streaming service. The existing algorithms, both modified-largest weighted delay first (M-LWDF) and exponent proportional fair (EXP/PF) rule can achieve good results in terms of head-of-line (HOL) packet delay, which affects the packet drop ratio. However, they can not consider the play-out outage ratio. Simulation results show that our proposed algorithm outperforms the existing scheduling algorithms in term of packet drop ratio and play-out outage ratio.
Keywords :
broadband networks; error statistics; function approximation; multi-access systems; multimedia communication; quality of service; radio access networks; scheduling; OFDMA systems; QoS aware packet scheduling; downlink packet scheduling; exponent proportional fair algorithm; head-of-line packet delay; modified-largest weighted delay first algorithm; packet drop ratio; play-out outage ratio; utility function; video streaming service; Algorithm design and analysis; Delay; Downlink; Fading; Jitter; OFDM; Scheduling algorithm; Streaming media; Throughput; Traffic control;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC-2007 Fall. 2007 IEEE 66th
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-0263-2
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2007.395
