标题： 数字孪生在线信道建模：挑战、原则与应用 显示英文标题

标题： Digital Twin Online Channel Modeling: Challenges,Principles, and Applications

摘要： 与传统的离线信道建模不同，数字孪生在线信道建模可以实时感知并准确表征动态无线信道，因此可以大大协助6G网络优化。 本文提出了一种新颖有前途的框架以及数字孪生在线信道模型（DTOCM）的分步设计流程。 通过实现动态信道变化的连续可视化和准确预测，DTOCM可以同步模拟网络和真实网络的性能。 我们首先探讨DTOCM的演进和概念性进展，突出其愿景和相关挑战。 然后，我们解释其运行原理、构建机制以及在典型6G场景中的应用。 随后，通过基于实际场景的DTOCM平台，展示了DTOCM的实时信道信息提供和可视化能力。 最后，讨论了未来的研究方向和开放问题。 显示英文摘要

摘要： Different from traditional offline channel modeling, digital twin online channel modeling can sense and accurately characterize dynamic wireless channels in real time, and can therefore greatly assist 6G network optimization. This article proposes a novel promising framework and a step-by-step design procedure of digital twin online channel models (DTOCM). By enabling continuous visualization and accurate prediction of dynamic channel variations, DTOCM can synchronize the performance between simulated and real networks. We first explore the evolution and conceptual advancements of DTOCM, highlighting its visions and associated challenges. Then, we explain its operational principles, construction mechanisms, and applications to typical 6G scenarios. Subsequently, the real-time channel information provisioning and visualization capabilities of DTOCM are illustrated through our DTOCM platform based on practical scenarios. Finally, future research directions and open issues are discussed.