Key technologies and large-scale applications of slicing packet network (SPN) based on Ethernet-native TDM

The metro network serves as critical infrastructure for mobile backhaul networks, dedicated lines, artificial intelligence (AI) computing centers, and ubiquitous computing power connectivity, making it a global research focus and competitive frontier in transport technologies. As emerging applications evolve from information consumption to industrial applications, network slicing is anticipated to emerge as a novel paradigm for information communication service delivery. The core concept of multi-dimensional converged forwarding, the core forwarding mechanism of “Ethernet-native time division multiplexing (TDM)”, as well as the system architecture and technical framework of the slicing packet network (SPN) were comprehensively elaborated. At present, SPN has achieved large-scale commercial deployment and established a series of international standards, becoming the next-generation transport network technology system of International Telecommunications Union Telecommunication Standardization Sector (ITU-T) following synchronous digital hierarchy (SDH) and optical transport network (OTN).