发表机构
Faculty of Engineering – University of Porto; LIAAD | INESC TEC, Porto, Portugal（波尔图大学工程学院; 葡萄牙波尔图 LIAAD | INESC TEC）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过 ns-3 仿真，联合评估节点密度、传播模型、Wi-Fi 代际（802.11g/ax）和传输协议对 WLAN 性能的影响，发现 TCP 与 UDP 在交付率和吞吐量上差异显著，强调需综合考量多指标。
AI 中文摘要
无线局域网（WLAN）的性能由介质竞争、传播、Wi-Fi 配置和传输层行为共同塑造。本研究在单接入点上行拓扑中评估 IEEE 802.11g 和 IEEE 802.11ax，在 Friis、LogDistance 和级联 Friis-Nakagami 传播模型下比较 UDP 和 TCP。因子设计涵盖 5 到 50 个站点、六个接入点距离（从 5 m 到 50 m）以及三个随机种子。在 1,080 次预定执行中，1,073 次产生有效的 CSV 输出；七次运行因 ns-3 和 cppyy 内部段错误而终止并被排除。在全球场景汇总中，TCP FlowMonitor 数据包交付率（PDR）范围为 0.994 至 0.997，而 UDP PDR 范围为 0.298 至 0.731。在配置的 IEEE 802.11ax 模式与 Friis 传播下，TCP 的最高平均聚合吞吐量为 2.619 Mb/s；UDP 在同一拓扑中达到 25.854 Mb/s。这些结果表明，数据包交付率、吞吐量、延迟和公平性必须综合考虑。FlowMonitor 指标是 IP 流观测，因此本研究未建立应用层交付，也未隔离可选的 IEEE 802.11ax 多用户机制。
英文摘要
Wireless local area network (WLAN) performance is jointly shaped by medium contention, propagation, Wi-Fi configuration, and transport-layer behavior. This study evaluates IEEE 802.11g and IEEE 802.11ax in a single-access-point uplink topology, comparing UDP and TCP under Friis, LogDistance, and cascaded Friis-Nakagami propagation models. The factorial design spans 5 to 50 stations, six access-point distances from 5 m to 50 m, and three random seeds. Of 1,080 scheduled executions, 1,073 produced valid CSV outputs; seven runs terminated with internal ns-3 and cppyy segmentation errors and were excluded. Across the global scenario summaries, TCP FlowMonitor packet delivery ratios (PDRs) range from 0.994 to 0.997, whereas UDP PDRs range from 0.298 to 0.731. The highest mean aggregate throughput is 2.619 Mb/s for TCP under the configured IEEE 802.11ax mode with Friis propagation; UDP reaches 25.854 Mb/s in the same topology. These results show that packet delivery ratio, throughput, delay, and fairness must be considered together. FlowMonitor metrics are IP-flow observations, so the study does not establish application-level delivery or isolate optional IEEE 802.11ax multi-user mechanisms.
