论文标题
迈向多用户互动虚拟现实的超低延迟MMWave Wi-Fi
Towards Ultra-Low-Latency mmWave Wi-Fi for Multi-User Interactive Virtual Reality
论文作者
论文摘要
对具有高保真虚拟现实（VR）耳机的电缆的需求仍然是通向交互式多用户VR的路径上的绊脚石。由于严格的延迟限制，设计完全无线耳机是具有挑战性的，少数可商用的解决方案很昂贵。这些解决方案使用专有毫米波（MMWave）通信技术，因为需要极高的频率来满足VR应用程序的吞吐量和延迟要求。在这项工作中，我们研究了是否可以使用符合规范的IEEE 802.11AD硬件来构建此类系统，这将大大降低无线MMWAVE VR SOLUTIONS的成本。我们提出了一个理论框架，以使用连接到单个访问点（AP）连接的1个或更多头部安装的显示器来计算不同IEEE 802.11AD通道访问方法的可实现的实时VR视频比特率。使用NS-3模拟器，我们验证了我们的理论框架，并证明了正确配置的IEEE 802.11AD AP可以为每只眼睛的4K视频流提供至少8个耳机，而传输延迟为1毫秒。
The need for cables with high-fidelity Virtual Reality (VR) headsets remains a stumbling block on the path towards interactive multi-user VR. Due to strict latency constraints, designing fully wireless headsets is challenging, with the few commercially available solutions being expensive. These solutions use proprietary millimeter wave (mmWave) communications technologies, as extremely high frequencies are needed to meet the throughput and latency requirements of VR applications. In this work, we investigate whether such a system could be built using specification-compliant IEEE 802.11ad hardware, which would significantly reduce the cost of wireless mmWave VR solutions. We present a theoretical framework to calculate attainable live VR video bitrates for different IEEE 802.11ad channel access methods, using 1 or more head-mounted displays connected to a single Access Point (AP). Using the ns-3 simulator, we validate our theoretical framework, and demonstrate that a properly configured IEEE 802.11ad AP can support at least 8 headsets receiving a 4K video stream for each eye, with transmission latency under 1 millisecond.
