Lee, J. F.J. F.LeeWANJIUN LIAOChen, M. C.M. C.Chen2009-03-042018-07-062009-03-042018-07-062007http://ntur.lib.ntu.edu.tw//handle/246246/142253https://www.scopus.com/inward/record.uri?eid=2-s2.0-34249729357&doi=10.1109%2fTVT.2007.895489&partnerID=40&md5=5b882d93a182a7e15a0dcfcb03a214e6In this paper, we propose an interframe-space (IFS)-based distributed-fair-queuing (IDFQ) mechanism to provide proportional fairness service for IEEE 802.11 wireless local-area networks (WLANs). IDFQ is designed to emulate self-clocked fair queuing in a distributed manner. It eliminates the backoff process as implemented in existing work and introduces a new mechanism to assign the IFS value to each station. IDFQ is immune from the implementation problem suffered by existing IFS-based mechanisms and is adaptive to the collision state in the system. Moreover, it can be used to eliminate the performance-anomaly problem of 802.11 medium-access control. The performance of IDFQ is validated by ns-2 simulations. The simulation results show that IDFQ supports fairness service for flows in proportion to their weights and outperforms existing mechanisms in terms of fairness and stability, rendering IDFQ an excellent candidate to provide weighted fairness in IEEE 802.11 WLANs. © 2007 IEEE.application/pdf723081 bytesapplication/pdfen-USDistributed fair queuing (DFS); IEEE 802.11 wireless local-area networks (WLANs)Computer simulation; Medium access control; Queueing networks; Queueing theory; Wireless local area networks (WLAN); Distributed fair queuing (DFS); Interframe-space (IFS); Self-clocked fair queuing; Data communication systemsjournal article2-s2.0-34249729357http://ntur.lib.ntu.edu.tw/bitstream/246246/142253/1/23.pdf