In our present-day world, the global technological and industrial revolution is accelerating. The widespread application of new generation ICT (information and communication technologies), such as AI, VR (Virtual Reality)/AR (Augmented Reality)/XR (Extended Reality), IoT (the Internet of Things), and blockchain technology, has driven the emergence of the 6 G communication system. Building on the basis of 5 G, the development of 6 G will have a profound impact on the intelligence process of communication development, which consists of intelligent connectivity, deep connectivity, holographic connectivity, and ubiquitous connectivity. To identify 6 G and its related issues, we conducted a survey of extant research on 6 G. In this paper, its prospects, core technologies, scenarios, challenges, and the related issues are discussed. Moreover, a potential framework for 6 G is proposed as well. The main contribution of this survey is that it clarifies the state of the art of 6 G for future study.

在当今世界，全球技术和工业革命正在加速发展。人工智能，VR（虚拟现实）/ AR（增强现实）/ XR（扩展现实），IoT（物联网）和区块链技术等新一代ICT（信息和通信技术）的广泛应用推动了6 G通信系统的出现。在5G的基础上，6G的发展将对通信发展的智能过程产生深远影响，其中包括智能连接，深度连接，全息连接和无处不在的连接。为了识别6G及其相关问题，我们对现有的6G研究进行了调查。本文对6G的前景，核心技术，场景，挑战以及相关问题进行了讨论。此外，还提出了6G的潜在框架。这项调查的主要贡献在于，它阐明了6G的最新技术，以备将来研究之用。