Title: Quality-driven scheduling for Long-Term Evolution system

Authors: Huda Adibah Mohd Ramli, Kumbesan Sandrasegaran, Rachod Patachaianand

Addresses: Faculty of Engineering and Information Technology, University of Technology, Sydney, 15 Broadway, Ultimo, NSW 2007, Australia; International Islamic University Malaysia (IIUM), P.O. Box 10, 50728 Kuala Lumpur, Malaysia. ' Faculty of Engineering and Information Technology, University of Technology, Sydney, 15 Broadway, Ultimo, NSW 2007, Australia. ' Faculty of Engineering and Information Technology, University of Technology, Sydney, 15 Broadway, Ultimo, NSW 2007, Australia

Abstract: This paper proposes a novel packet scheduling algorithm that extends Opportunistic and Delay Sensitive (ODS) algorithm to simultaneously support Guaranteed Bit Rate (GBR) and Non-GBR (NGBR) services over downlink Long Term Evolution (LTE) system. The proposed algorithm utilises Channel Quality Information (CQI), average throughput, type of services, packet delay and buffer information when allocating and assigning the available Radio Resource Units (RRUs) among the users. It is demonstrated that the proposed algorithm is more efficient in terms of maximising throughput and simultaneously satisfying the Quality of Service (QoS) requirements of GBR and NGBR services at acceptable levels.

Keywords: LTE; long-term evolution; OFDMA; orthogonal frequency division multiple access; mobile communications; packet scheduling; QoS; quality of service; multimedia; resource allocation; GBR services; guaranteed bit rate; NGBR services; non-guaranteed bit rate; channel quality information; CQI; average throughput; services type; packet delay; buffer information; radio resource units.

DOI: 10.1504/IJMC.2011.042453

International Journal of Mobile Communications, 2011 Vol.9 No.5, pp.441 - 457

Published online: 11 Sep 2011 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article