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介绍了为WLANs提供业务质量(QoS)支持机制的IEEE802.11e标准草案。通过与802.11标准的MAC层进行对照分析,指出了802.11e草案对MAC层所作的改进。着重分析了改进的分布协调功能与混合协调功能两种新的QoS支持机制。
The draft IEEE802.11e standard for providing quality of service (QoS) support mechanisms for WLANs is presented. By contrasting with the 802.11 standard MAC layer, we point out that the 802.11e draft improves the MAC layer. Focus on the analysis of the improved distribution coordination function and hybrid coordination function of two new QoS support mechanisms.