Research Article
A Fair MAC Scheme for EDCA based Wireless Networks
@INPROCEEDINGS{10.1109/TRIDENTCOM.2009.4976242, author={Rong He and Xuming Fang}, title={A Fair MAC Scheme for EDCA based Wireless Networks}, proceedings={The First International ICST Workshop on Pervasive Computing Systems and Infrastructures}, publisher={IEEE}, proceedings_a={PCSI}, year={2009}, month={5}, keywords={Fairness Wireless Local Area Network (WLAN) Wireless Mesh Network (WMN) medium access control (MAC)}, doi={10.1109/TRIDENTCOM.2009.4976242} }- Rong He
Xuming Fang
Year: 2009
A Fair MAC Scheme for EDCA based Wireless Networks
PCSI
IEEE
DOI: 10.1109/TRIDENTCOM.2009.4976242
Abstract
This paper presents a bandwidth occupied time proportion fair MAC algorithm (BOTP-FMAC) for WLAN and Wireless Mesh Network (WMN). It aims to address the unfairness problem in enhanced distributed channel access (EDCA) mechanism, in which higher-priority streaming traffic flows intend to severely deprive the access opportunity of lowerpriority traffic flows due to the capture effect, especially when the network load is near saturation. By dynamically tuning the parameters of channel contention and the threshold of bandwidth occupied time proportion for priority queue adaptively, BOTPFMAC algorithm can achieve a weighted fair allocation of the bandwidth resource among different traffic flows. The simulation results indicate that our proposed algorithm substantially improves the fairness and attains a greater aggregate throughput. Additionally, it is easy to carry out without generating network overhead.