摘要
Abstract
[Objective]With the gradual withdrawal of Synchronous Digital Hierarchy(SDH)technology and the development of emerging industries,the transmission network urgently needs new carrier technologies to support the needs of government enter-prise dedicated lines and computing power networks.The Optical Service Unit(OSU)technology provides efficient carrying solu-tions for government and enterprise businesses through flexible mapping.This article analyzes the advantages of OSU technology,proposes an OSU business model and current network implementation plan,and outlines a target network architecture.These ef-forts aim to address the shortcomings of current Optical Transport Network(OTN)networks in carrying small particle services,while enhancing the network flexibility and efficiency.[Methods]By comparing and analyzing the advantages of OSU with exist-ing SDH and Multiprotocol Label Switching-Transport Profile(MPLS-TP)technologies,this paper explores the technical char-acteristics,equipment evolution schemes,and network architecture of OSU.By combining laboratory testing and current network validation,we evaluate the performance of OSU technology in different application scenarios,with a focus on key indicators such as latency optimization,bandwidth utilization,and flexible adjustment capability.[Results]The experimental results show that the OSU technology performs well in delay optimization and small particle service carrying.Its flexible mapping mechanism can significantly reduce bandwidth waste,improve resource utilization,simplify mapping hierarchy,reduce transmission latency,and enhance hard pipeline connectivity.As a result,100 Gbit/s ports can support up to 4 000 dedicated lines,substantially improving carrying capacity.In addition,the cross capacity of OSU devices reaches 12.8 Tbit/s,enhancing the flexibility and scalability of the network.[Conclusion]The OSU technology provides an effective way to solve the bottleneck of carrying high-quality dedi-cated line services for small particles in current government enterprise OTN networks.By planning and deploying OSU devices reasonably,existing networks can be effectively upgraded to meet the needs of government and enterprise users for flexible band-width,low latency,and high reliability.The application prospects of OSU technology in future government enterprise networks are broad.This study provides important theoretical support and practical guidance for its promotion and application.关键词
光业务单元/系统架构/业务模型/目标网络架构/业务承载方案Key words
OSU/system architecture/business model/target network architecture/business bearer solution分类
信息技术与安全科学
