The advent of the Metaverse concept has further expedited the evolution of haptic, tactile internet, and multimedia applications with their VR/AR/XR services, and therefore, fully-immersive sensing is most likely to define the next generation of wireless networks as a key to realize the speculative vision of the Metaverse. In this magazine, we articulate different types of media that we envision will be communicated between the cyber and physical twins in the Metaverse. In particular, we explore the advantages grasped by exploiting each kind, and we point out critical challenges pertinent to 3D data processing, coding, transporting, and rendering. We further shed light on the role of future wireless networks in delivering the anticipated quality of immersion through the reliable streaming of multimedia signals between the digital twin and its physical counterpart. Specifically, we explore emergent communication paradigms, including semantic, holographic, and goal-oriented communication, which we expect to realize energy and spectrally efficient Metaverse while ensuring ultra-low latency.

翻译：元宇宙概念的诞生进一步加速了触觉、触觉互联网及VR/AR/XR多媒体应用的发展。因此，全沉浸式感知很可能成为下一代无线网络的关键特征，以实现对元宇宙的愿景构想。本文阐述了我们在元宇宙中设想的数字孪生与物理孪生之间传递的不同类型媒体。特别地，我们探讨了利用各种媒体类型所获得的优势，并指出了与三维数据处理、编码、传输及渲染相关的关键挑战。我们进一步阐明了未来无线网络在通过数字孪生与物理孪生之间多媒体信号的可靠流传输送预期沉浸质量中的作用。具体而言，我们探索了语义通信、全息通信和面向目标通信等新兴通信范式，这些范式有望在确保超低延迟的同时，实现能量和频谱高效的元宇宙。