There are two IEEE 802.11 mechanisms which enhance Wi-Fi network efficiency by lowering communication overhead: the legacy transmission opportunity (TXOP) limit and frame aggregation. According to the IEEE 802.11 standard, frame aggregation has priority over TXOP duration settings, in some cases completely overriding legacy behavior. Therefore, Wi-Fi vendors and administrators may resign from enabling TXOP limit which, as we show in this letter, is not always a good choice. We base our findings on the presented analytical throughput model of 802.11ac (validated by ns-3 simulations), which allows measuring interactions between the two considered mechanisms and their impact on traffic differentiation in 802.11 networks.

中文翻译：

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通过将帧聚合与 TXOP 限制相结合来调整 Wi-Fi 流量差异

有两种 IEEE 802.11 机制通过降低通信开销来提高 Wi-Fi 网络效率：传统传输机会 (TXOP) 限制和帧聚合。根据 IEEE 802.11 标准，帧聚合优先于 TXOP 持续时间设置，在某些情况下会完全覆盖传统行为。因此，Wi-Fi 供应商和管理员可能会放弃启用 TXOP 限制，正如我们在这封信中所展示的，这并不总是一个好的选择。我们的研究结果基于提出的 802.11ac 分析吞吐量模型（通过 ns-3 模拟验证），该模型允许测量两种考虑机制之间的交互及其对 802.11 网络中流量差异的影响。