面向6G的无蜂窝无线接入网技术

Cell-Free Radio Access Network Technology for 6G

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。

Cell-free radio access network(CF-RAN),as a novel network architecture,plays a significant supportive role for the typical applica⁃tion scenarios and key technical indicators of 6G.Firstly,the evolution of multi-antenna technology as well as network architecture is intro⁃duced,including cell-free massive MIMO(CF-mMIMO)technology and the CF-RAN architecture based on this technology.Next,the sup⁃port 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,is 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 tech⁃nical indicators of 6G are introduced.