面向6G的无蜂窝无线接入网技术

摘要：无蜂窝无线接入网（CF-RAN）作为一种新型的网络架构，对6G的典型应用场景和关键技术指标均有重要的支撑作用。首先，介绍了多天线技术以及网络架构的演进，包括无蜂窝大规模多输入多输出（CF-mMIMO）技术以及基于该技术的无蜂窝无线接入网架构。接下来，探讨了无蜂窝大规模MIMO技术对6G典型的应用场景的支撑，包括基于无蜂窝系统的沉浸式通信、超大规模连接、超可靠低延迟通信、感知和通信融合、泛在连接场景，以及基于人工智能和通信融合对无蜂窝系统的支撑，并提出一些解决思路和新的研究方向。最后，介绍了一种新型的无蜂窝无线接入网实现架构，以及该架构对6G部分关键技术指标的支撑。

关键词：无蜂窝大规模MIMO；无蜂窝无线接入网；6G

Abstract: Cell-Free Radio Access Network (CF-RAN), as a novel network architecture, play a significant supportive role for the typical application scenarios and key technical indicators of 6G. Firstly, the evolution of multi-antenna technology as well as network architecture is introduced, including Cell-Free Massive MIMO (CF-mMIMO) technology and the CF-RAN architecture based on this technology. Next, the support of CF-mMIMO technology for typical application scenarios of 6G, including cell-free system based immersive communication, massive communication, hyper reliable and low-latency communication, integrated sensing and communication, ubiquitous connectivity, as well as the support of cell-free system based on integrated artificial intelligence and communication, are introduced, and some solution ideas and new research directions are proposed. Finally, a novel architecture for CF-RAN and the support of this architecture for some of the key technical indicators of 6G are introduced.

Keywords: cell-free massive MIMO; cell-free radio access network; 6G