标题： MLO在XR流媒体中的性能评估：Wi-Fi 7能否满足期望？ 显示英文标题

标题： Performance Evaluation of MLO for XR Streaming: Can Wi-Fi 7 Meet the Expectations?

摘要： 扩展现实（XR）对吞吐量和延迟有严格的要求，这些要求很难通过当前的无线技术来满足。未能满足这些要求会导致画面质量下降，用户输入与相应输出之间的感知延迟，甚至导致最终用户感到眩晕。在本文中，我们研究了即将推出的Wi-Fi 7及其对多链路操作（MLO）的新支持，以应对这些严格的要求。我们的研究基于从符合MLO的模拟器中提取的仿真结果，该模拟器可以真实地再现VR流量。结果表明，MLO可以支持VR应用。通过联合使用具有独立信道访问过程的多个链路，MLO可以降低整体延迟，这在上行链路中尤其有用，因为其要求比下行链路更严格，并且对于实现预期性能至关重要。我们表明，使用MLO可以在每个网络中支持比使用SLO的同等数量链路更多的用户。我们还表明，虽然保持相同的总体带宽，但使用窄信道的更多MLO链路比使用宽信道的较少链路会导致更低的延迟。 显示英文摘要

摘要： Extended Reality (XR) has stringent throughput and delay requirements that are hard to meet with current wireless technologies. Missing these requirements can lead to worsened picture quality, perceived lag between user input and corresponding output, and even dizziness for the end user. In this paper, we study the capability of upcoming Wi-Fi 7, and its novel support for Multi-Link Operation (MLO), to cope with these tight requirements. Our study is based on simulation results extracted from an MLO-compliant simulator that realistically reproduces VR traffic. Results show that MLO can sustain VR applications. By jointly using multiple links with independent channel access procedures, MLO can reduce the overall delay, which is especially useful in the uplink, as it has more stringent requirements than the downlink, and is instrumental in delivering the expected performance. We show that using MLO can allow more users per network than an equivalent number of links using SLO. We also show that while maintaining the same overall bandwidth, a higher number of MLO links with narrow channels leads to lower delays than a lower number of links with wider channels.