论文标题

WISERVR:语义通信启用无线虚拟现实交付

WiserVR: Semantic Communication Enabled Wireless Virtual Reality Delivery

论文作者

Xia, Le, Sun, Yao, Liang, Chengsi, Feng, Daquan, Cheng, Runze, Yang, Yang, Imran, Muhammad Ali

论文摘要

无线上的虚拟现实(VR)预计将是下一代通信网络中的杀手应用程序之一。然而,在有限的带宽资源下,庞大的数据量以及对延迟和可靠性的严格要求,使无限制的无线VR交付越来越具有挑战性。因此,这种瓶颈激发了这项工作,以寻求使用语义交流的潜力,语义通信是一种新的范式,有望大大减轻资源压力,以进行有效的VR交付。为此,我们提出了一个新颖的框架,即VR(WISERVR)的无线语义交付,用于将连续的360°视频帧传递给VR用户。具体而言,对于Wiservr的收发器,基于深度学习的多个模块被充分说明,以实现高性能特征提取和语义恢复。其中,我们专门地制定了语义位置图的概念,并利用知识共享的联合语义通道编码方法不仅可以实质性地降低通信潜伏期,还可以保证各种渠道状态下的足够传输可靠性和弹性。此外,提出了WISERVR的实施,然后进行相应的初始模拟,以进行性能评估与基准相比。最后,我们讨论了几个开放问题,并提供可行的解决方案,以释放WISERVR的全部潜力。

Virtual reality (VR) over wireless is expected to be one of the killer applications in next-generation communication networks. Nevertheless, the huge data volume along with stringent requirements on latency and reliability under limited bandwidth resources makes untethered wireless VR delivery increasingly challenging. Such bottlenecks, therefore, motivate this work to seek the potential of using semantic communication, a new paradigm that promises to significantly ease the resource pressure, for efficient VR delivery. To this end, we propose a novel framework, namely WIreless SEmantic deliveRy for VR (WiserVR), for delivering consecutive 360° video frames to VR users. Specifically, deep learning-based multiple modules are well-devised for the transceiver in WiserVR to realize high-performance feature extraction and semantic recovery. Among them, we dedicatedly develop a concept of semantic location graph and leverage the joint-semantic-channel-coding method with knowledge sharing to not only substantially reduce communication latency, but also to guarantee adequate transmission reliability and resilience under various channel states. Moreover, implementation of WiserVR is presented, followed by corresponding initial simulations for performance evaluation compared with benchmarks. Finally, we discuss several open issues and offer feasible solutions to unlock the full potential of WiserVR.

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