Enhancement of QoS differentiation over IEEE 802.11 WLAN

Enhancement of QoS differentiation over IEEE 802.11 WLAN

IQD, a distributed coordination function (DCF) with integrated quality of service (QoS) differentiation, is proposed in this letter to enhance QoS over IEEE 802.11 WLAN. DCF does not support any QoS differentiation. Enhanced DCF (EDCF) only supports delay differentiation. IQD can achieve both delay...

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Veröffentlicht in:IEEE communications letters 2004-08, Vol.8 (8), p.494-496
Hauptverfasser: Zhao, L., Fan, C.
Format: Artikel
Sprache:eng
Schlagworte:
Access methods and protocols, osi model
Analytical models
Applied sciences
Computer simulation
Delay
Differentiation
Exact sciences and technology
Laboratories
Local area networks
Mathematical analysis
Mathematical models
Performance analysis
Protocols
Quality of service
Robustness
Size control
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Throughput
Wireless communication
Wireless LAN
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Beschreibung
Zusammenfassung:IQD, a distributed coordination function (DCF) with integrated quality of service (QoS) differentiation, is proposed in this letter to enhance QoS over IEEE 802.11 WLAN. DCF does not support any QoS differentiation. Enhanced DCF (EDCF) only supports delay differentiation. IQD can achieve both delay and packet-loss-rate differentiation by differentiating the initial window size and the retry limit. Simulation results show that IQD performs better than DCF and EDCF in enhancing QoS, and the proposed analytical model is valid.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2004.833787