论文标题

了解Wi-Fi中的多链接操作7:性能,异常和解决方案

Understanding Multi-link Operation in Wi-Fi 7: Performance, Anomalies, and Solutions

论文作者

Carrascosa-Zamacois, Marc, Geraci, Giovanni, Galati-Giordano, Lorenzo, Jonsson, Anders, Bellalta, Boris

论文摘要

Wi-Fi 7是否会构想支持极高的吞吐量,也能提供一贯的低延迟?最佳希望似乎在于允许下一代设备通过多连锁操作(MLO)访问多个渠道。在本文中,我们旨在提高对MLO的理解,将焦点放在其数据包延迟性能上。我们表明,MLO设备可以利用多个无争议的链接来大大减少其传输时间,但偶尔也可以彼此饿死,并且出人意料地遭受了比计划中精心策划的传统单链接操作更高的延迟。接下来,我们检查并解释了这一异常,还提出了实用的解决方法来绕过它。最后,我们指出了其他破坏性功能,如果成功地与MLO配对,可以为Wi-Fi 8带来令人兴奋且前所未有的机会。

Will Wi-Fi 7, conceived to support extremely high throughput, also deliver consistently low delay? The best hope seems to lie in allowing next-generation devices to access multiple channels via multi-link operation (MLO). In this paper, we aim to advance the understanding of MLO, placing the spotlight on its packet delay performance. We show that MLO devices can take advantage of multiple contention-free links to significantly reduce their transmission time, but also that they can occasionally starve one another and surprisingly incur a higher delay than that of a well planned legacy single link operation. We next examine and explain this anomaly, also putting forth practical workarounds to circumvent it. We conclude by pointing to other disruptive features that, if successfully paired with MLO, can usher in exciting and unprecedented opportunities for Wi-Fi 8.

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