A fair scheduling scheme for a time-sensitive traffic over the dual-channel wireless network

Authors:
Junghoon Lee;Mikyung Kang;Abhijit Saha
Affiliations:
Cheju National Univeristy, Jeju, Republic of Korea;Cheju National Univeristy, Jeju, Republic of Korea;Cheju National Univeristy, Jeju, Republic of Korea
Venue:
Proceedings of the 2007 ACM symposium on Applied computing
Year:
2007

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Abstract

This paper proposes a message scheduling scheme capable of improving both throughput and fairness on the dual-channel wireless network. Based on the time-slotted access mechanism for each channel within a single cell, the coordinator schedules the transmission of the first channel by EDF (Earliest Deadline First) discipline that can maximize the actual throughput, while GDF (Greatest Degradation First) discipline is exploited for the second channel to improve the fairness factor. During runtime, with the support of channel estimation mechanism, the coordinator can dynamically switch the channel between the two scheduled streams. The simulation result shows that the proposed scheme improves the actual throughput by 7.2 % compared with EDF, while the fairness is improved by 2.4 % compared with GDF.