Home // ICWMC 2012, The Eighth International Conference on Wireless and Mobile Communications // View article
Authors:
Suman Kumar
Krishnamurthy Giridhar
Sheetal Kalyani
Keywords: Proportion Fair, Max Rate, MLWDF, HARQ, Throughput, Fairness, PLR
Abstract:
Emerging wireless communication systems use MIMO-OFDM with adaptive modulation and Hybrid Automatic Repeat Request (HARQ) techniques to enables high bit rate and low packet error rate. In this work, a 3-Stage packet scheduling algorithm that is HARQ aware is proposed, which supports real time service with multi-level delay constraints and retransmission constraints in OFDM systems. For performance analysis, three Quality of Service (QoS) parameters namely packet loss rate, fairness, and throughput are studied. Corresponding to these three metrics and depending upon the delay and retransmission constraints, a 3-Stage scheduling strategy is proposed. It is assumed that the packets are lost due to violation of the delay constraint and/or channel induced error, even after allowing the maximum number of retransmissions. Simulation result shows that this novel 3-Stage scheduler achieves a balance between the three QoS metrics, and could therefore be preferred over Modified Largest Weighted Delay First, Proportion Fair, and Max Rate schedulers, which can not simultaneously satisfy all the three QoS metrics.
Pages: 208 to 211
Copyright: Copyright (c) IARIA, 2012
Publication date: June 24, 2012
Published in: conference
ISSN: 2308-4219
ISBN: 978-1-61208-203-5
Location: Venice, Italy
Dates: from June 24, 2012 to June 29, 2012