6DOF Virtual Reality Dataset and Performance Evaluation of Millimeter Wave vs. Free-Space-Optical Indoor Communications Systems for Lifelike Mobile VR Streaming
6DOF Virtual Reality Dataset and Performance Evaluation of Millimeter Wave vs. Free-Space-Optical Indoor Communications Systems for Lifelike Mobile VR Streaming
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DOI：
10.1109/ieeeconf51394.2020.9443328
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发表时间：
2020-11
期刊：
影响因子：
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通讯作者：
Jacob Chakareski;M. Khan;T. Ropitault;Steve Blandino
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文献类型：
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作者：
Jacob Chakareski;M. Khan;T. Ropitault;Steve Blandino
双连接流可以成为下一代6自由度虚拟现实（VR）场景沉浸的关键推动因素。事实上，使用传统的低于6 GHz的WiFi可以可靠地传输低质量的VR内容基线表示，而新兴的通信技术允许并行传输高质量的用户视口特定增强表示，与基线表示协同集成，以提供高质量的VR沉浸感。在本文中，我们评估了两种候选新兴技术，自由空间光学（FSO）和毫米波（mmWave），它们都提供了前所未有的可用频谱和数据速率。我们制定了一个优化问题，以最大限度地提高所设想的双连接6DOF VR流的沉浸保真度，这取决于WiFi和毫米波/FSO链路速率，以及服务器和用户VR头显的计算能力。问题是混合整数规划，我们制定了一个优化框架，以较低的复杂度捕获最优解。为了评估所提出系统的性能，我们收集了实际的6DOF测量值。我们的研究结果表明，FSO和毫米波技术都可以实现高保真的8K-120帧/秒（fps） 6DOF内容流。
Dual-connectivity streaming can be a key enabler of next generation 6 Degrees Of Freedom (DOF) Virtual Reality (VR) scene immersion. Indeed, using conventional sub-6 GHz WiFi allows to reliably stream a lower-quality baseline representation of the VR content while emerging communication technologies allow to stream in parallel a high-quality user viewport-specific enhancement representation that synergistically integrates with the baseline representation to deliver high-quality VR immersion. In this paper, we evaluate two candidates emerging technologies, Free Space Optics (FSO) and millimeter-Wave (mmWave), which both offer unprecedented available spectrum and data rates. We formulate an optimization problem to maximize the delivered immersion fidelity of the envisioned dual-connectivity 6DOF VR streaming, which depends on the WiFi and mmWave/FSO link rates, and the computing capabilities of the server and the user’s VR headset. The problem is mixed integer programming and we formulate an optimization framework that captures the optimal solution at lower complexity. To evaluate the performance of the proposed systems, we collect actual 6DOF measurements. Our results demonstrate that both FSO and mmWave technologies can enable streaming of 8K-120 frames-per-second (fps) 6DOF content at high fidelity.