Massive Multiple-Input Multiple-Output (mMIMO) is one of the essential technologies introduced by the Fifth Generation (5G) of wireless communication systems. However, although mMIMO provides many benefits for wireless communications, it cannot ensure uniform wireless coverage and suffers from inter-cell interference inherent to the traditional cellular network paradigm. Therefore, industry and academia are working on the evolution from conventional Centralized mMIMO (CmMIMO) to Distributed mMIMO (DmMIMO) architectures for the Sixth Generation (6G) of wireless networks. Under this new paradigm, several Access Points (APs) are distributed in the coverage area, and all jointly cooperate to serve the active devices. Aiming at Machine-Type Communication (MTC) use cases, we compare the performance of CmMIMO and different DmMIMO deployments in an indoor industrial scenario considering regular and alarm traffic patterns for MTC. Our simulation results show that DmMIMO's performance is often superior to CmMIMO. However, the traditional CmMIMO can outperform DmMIMO when the devices' channels are highly correlated.
翻译:巨型多输入多输出(mMIMO)是第五代(5G)无线通信系统引入的基本技术之一。然而,尽管mMIMO为无线通信提供了许多好处,但无法确保均匀的无线覆盖并遭受传统蜂窝网络范例固有的干扰。因此,工业和学术界正在致力于从传统的中心化mMIMO(CmMIMO)转变到第六代(6G)无线网络的分布式mMIMO(DmMIMO)架构。在这种新范例下,几个接入点(AP)在覆盖区域内分布,并共同合作为活动设备提供服务。针对机器类通信(MTC)案例,我们比较了CmMIMO和不同的DmMIMO部署在室内工业场景中,考虑MTC的规律和警报流量模式的性能。我们的仿真结果显示,DmMIMO的性能通常优于CmMIMO。然而,在设备通道高度相关时,传统的CmMIMO可以优于DmMIMO。