5G is a key tool for the cloud-based wireless production of audio-visual contents. By providing higher throughput and lower latency than previous mobile network technologies, as well as flexible allocation of network resources, it enables that some content production pipelines, which are currently implemented using wired connectivity, are provided on top of a 5G network. This brings down production costs, reduces environmental impact and increases operational efficiency. In particular, live immersive production services, such as free-viewpoint video (FVV), can be provided in a much more efficient way. In this paper, we address the challenge of producing and streaming FVV services in real time through 5G networks. We have adapted a state-of-the-art FVV system to integrate it within a 5G architecture, using three key technological enablers: mmWave radio access network to support the uplink traffic requirements from FVV cameras, multi-access edge computing to run video processing algorithms with minimum latency, and end-to-end slicing to guarantee a sufficient quality of service (QoS) within the production pipeline. We have built a field trial over the production network of a telecommunication operator, including a mmWave pilot deployment, edge cloud processing, and remote content production, involving three different locations across Spain. We have measured the key performance indicators at the relevant parts of our trial deployment, showing that, with existing 5G technology, it is possible to achieve live FVV production, although with some limitations. We have also analyzed such limitations, obtaining some insights on how the next generation of 5G networks can overcome them to achieve higher quality of experience (QoE).

中文翻译：

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通过 5G 网络进行沉浸式媒体制作的实时自由视点视频


5G是视听内容云端无线制作的关键工具。通过提供比以前的移动网络技术更高的吞吐量和更低的延迟，以及灵活的网络资源分配，它使得目前使用有线连接实现的一些内容制作管道能够在5G网络之上提供。这降低了生产成本，减少了对环境的影响并提高了运营效率。特别是，可以以更有效的方式提供现场沉浸式制作服务，例如自由视点视频（FVV）。在本文中，我们解决了通过 5G 网络实时生成和流式传输 FVV 服务的挑战。我们采用了最先进的 FVV 系统，利用三个关键技术推动因素将其集成到 5G 架构中：支持 FVV 摄像机上行链路流量需求的毫米波无线接入网络、运行视频处理的多接入边缘计算具有最小延迟的算法和端到端切片，以保证生产管道内足够的服务质量（QoS）。我们在一家电信运营商的生产网络上建立了现场试验，包括毫米波试点部署、边缘云处理和远程内容生产，涉及西班牙的三个不同地点。我们对试部署相关部分的关键性能指标进行了测量，结果表明，利用现有的5G技术，可以实现FVV直播制作，但存在一定的局限性。我们还分析了这些限制，获得了有关下一代 5G 网络如何克服这些限制以实现更高体验质量 (QoE) 的一些见解。