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- W4814711 abstract "As wireless networks are rapidly deployed, different traffic classes will exhibit a large variety of characteristics and QoS requirements, such as bandwidth rate, maximum tolerable bit error rate and delay. the PCF standard has been shown to have some lacks for guaranteeing QoS for flows with specific QoS requirements.The contribution of this paper is the proposal of QoS-PCF, an extension of the Point Coordination Function (PCF) mode of the IEEE 802.11 MAC protocol. This new scheme can be used to enhance the QoS support for multimedia traffic in IEEE 802.11 WLAN. The main idea of QoS-PCf is to use broadcast in polling wireless stations at the beginning of a contention free period and in data acknowledgements at the end of the same period. Its performance has been evaluated and compared to PCF and DCF using Network Simulator NS-2. We show that QoS-PCF outperforms the standard PCF in terms of delay and throughput guarantees for real time traffic and fairness." @default.
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- W4814711 date "2007-03-14" @default.
- W4814711 modified "2023-10-03" @default.
- W4814711 title "QOS-PCF: an enhanced mechanism of PCF for QOS support in IEEE 802.11 wireless LANS" @default.
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