A scheduling algorithm for QoS support in IEEE802.11 networks
A scheduling algorithm for QoS support in IEEE802.11 networks
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DOI：
10.1109/mwc.2003.1209594
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发表时间：
2003-06
期刊：
影响因子：
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通讯作者：
A. Grilo;M. Macedo;M. Nunes
中科院分区：
文献类型：
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作者：
A. Grilo;M. Macedo;M. Nunes
提出了一种IEEE 802.11e任务组定义的IEEE 802.11e混合协调函数的调度算法。HCF可用于在IEEE802.11e基础设施无线局域网中提供IP服务质量保证。增强的分布式协调功能主要用于无服务质量保证的数据传输，但也可用于降低对服务质量敏感的业务的传输延迟。排队分组的调度遵循延迟-最早到期日期算法。该算法与商业无线局域网中实现的链路自适应机制兼容，因为它限制了站控制无线介质的时间量。通过计算机仿真对该算法的性能进行了评估，并与IEEE 802.11e任务组提出的参考调度算法进行了比较。
This article presents a scheduling algorithm for the IEEE 802.11e hybrid coordination function under definition by the IEEE 802.11e task group. HCF can be used to provide IP quality of service guarantees in IEEE802.11e infrastructure WLANs. The enhanced distributed coordination function is mainly used for data transmission without QoS guarantees, but can also be used to decrease the transmission delay of QoS-sensitive traffic. Scheduling of queued packets follows a delay-earliest-due-date algorithm. The proposed algorithm is compatible with the link adaptation mechanisms implemented in commercial WLANs, as it limits the amount of time during which the stations control the wireless medium. The performance of the algorithm is evaluated through computer simulation and compared with the reference scheduler presented by the IEEE 802.11e task group.