Underlayer networks in the context of 6G for manufacturing are crucial. They address the evolving needs of highly interconnected and autonomous systems in industry. The digitalization of manufacturing processes, driven by the Internet of Things and increased data availability, enables more efficient and demand-driven production. However, wireless connectivity, which offers flexibility and easy integration of components, comes with challenges such as signal interference or high latency. A new management system is needed to coordinate and route traffic of multiple networks in a specific coverage area. This paper proposes underlayer networks designed for manufacturing, providing low latency, reliability, and security. These networks enable wireless connectivity and integration of wireless technologies into the manufacturing environment, enhancing flexibility and efficiency. The paper also discusses network slicing, spectrum sharing, and the limitations of current wireless networks in manufacturing. It introduces a network concept for underlayer networks and evaluates its application in closed-loop communication for machine tools. The study concludes with future research prospects in this area.

翻译：在6G制造业背景下，底层网络至关重要。它们满足了工业中高度互联与自主系统不断演进的需求。在物联网和数据可用性提升的驱动下，制造业流程的数字化实现了更高效、需求驱动的生产。然而，无线连接虽然提供了灵活性和组件易于集成的优势，但也面临信号干扰或高延迟等挑战。需要一种新型管理系统来协调特定覆盖区域内多个网络的流量并为其路由。本文提出了专为制造业设计的底层网络，提供低延迟、可靠性和安全性。这些网络实现了无线连接功能，并将无线技术集成到制造环境中，从而提升了灵活性和效率。本文还讨论了网络切片、频谱共享以及当前无线网络在制造业中的局限性。它引入了一种面向底层网络的网络概念，并评估了其在机床闭环通信中的应用。研究最后展望了该领域的未来研究方向。