ABSTRACT: In this study, a two-layer channel-aware scheduling algorithm, named Adaptive Credit-Based Fair Queuing (ACFQ) Based on Credit-Based Fair Queuing (CBFQ) is introduced. The proposed algorithm adapts the error-free CBFQ with the multi-rate nonideal environment considering the Adaptive Modulation and Coding (AMC) at the radio link layer and provides packet-level Quality of Service (QoS) over the wireless fading channel. It is shown that the introduced AMC architecture and compensation model in two-layer scheduling provide fair sharing while ensuring high bandwidth efficiency. Furthermore, the proposed scheduler exhibits very low complexity, thus suitable for practical implementation.
Journal of Applied Sciences. 01/2009;