Title: Immersive Multimedia Communication: State-of-the-Art on eXtended Reality Streaming Show Chinese title

Title: 沉浸式多媒体通信：扩展现实流媒体的最新进展

Abstract: Extended reality (XR) is rapidly advancing, and poised to revolutionize content creation and consumption. In XR, users integrate various sensory inputs to form a cohesive perception of the virtual environment. This survey reviews the state-of-the-art in XR streaming, focusing on multiple paradigms. To begin, we define XR and introduce various XR headsets along with their multimodal interaction methods to provide a foundational understanding. We then analyze XR traffic characteristics to highlight the unique data transmission requirements. We also explore factors that influence the quality of experience in XR systems, aiming to identify key elements for enhancing user satisfaction. Following this, we present visual attention-based optimization methods for XR streaming to improve efficiency and performance. Finally, we examine current applications and highlight challenges to provide insights into ongoing and future developments of XR. Show Chinese abstract

Abstract: 扩展现实（XR）正在迅速发展，并有望彻底改变内容的创作和消费方式。 在XR中，用户整合各种感官输入以形成对虚拟环境的整体感知。 本综述回顾了XR流媒体领域的最新进展，重点关注多种范式。 首先，我们定义了XR，并介绍了各种XR头显及其多模态交互方法，以提供基础知识。 然后，我们分析了XR流量特性，以突出独特的数据传输需求。 我们还探讨了影响XR系统体验质量的因素，旨在识别提升用户满意度的关键要素。 随后，我们提出了基于视觉注意力的XR流媒体优化方法，以提高效率和性能。 最后，我们审视了当前的应用，并强调挑战，以洞察XR的现状和发展方向。