arXiv:2611.12231 · v1

Towards Reliable Cloud VR over Wi-Fi 7: Leveraging MLO and TXOP Sharing

首次提交 2026-11-09 19:24

版本更新 2026-11-09 19:24

雷达观测 2026-11-10 15:22

摘要

Cloud~\ac{VR} imposes stringent latency and reliability requirements due to the closed-loop interaction between \ac{DL} video streaming and \ac{UL} tracking updates. Although Wi-Fi~7 introduces \ac{MLO} to improve throughput and reduce latency, its adoption for latency-critical applications like Cloud~\ac{VR} is not straightforward. This paper investigates Cloud~\ac{VR} streaming over Wi-Fi~7 through a comprehensive cross-layer evaluation and proposes an application-aware \ac{TXS} scheduling policy that exploits the \ac{UL}/\ac{DL} coupling to jointly serve tracking and video traffic. To evaluate our mechanism, we introduce NeXus-VR, an open-source simulator that extends OMNeT++ to integrate the complete Cloud~\ac{VR} application pipeline and the Wi-Fi~7 MAC/PHY layers. Simulation results with multiple \ac{VR} users, \ac{OBSS} contention, and user mobility show that \ac{MLO} and the proposed \ac{TXS} scheduling policy provide complementary benefits. While \ac{MLO} improves transmission opportunities and robustness, the proposed Cloud \ac{VR}-aware \ac{TXS} scheduler preserves tracking freshness by reducing contention between \ac{UL} and \ac{DL} traffic. Together, they increase Cloud~\ac{VR} capacity by up to 2.25$\times$ over conventional single-link operation while consistently reducing latency and improving application-level quality of experience.