5G eMBB场景中SR保护技术应用研究  

Research on Application of SR Protection Technology in 5G eMBB Scenarios

作　　者：张皓 刘国辉[1] 张新全[1] ZHANG Hao;LIU Guo-hui;ZHANG Xin-quan(Wuhan Research Institute of Posts and Telecommunications,Wuhan 430074,China)

机构地区：[1]武汉邮电科学研究院,武汉430074

出　　处：《光通信研究》2022年第1期71-77,共7页Study on Optical Communications

摘　　要：针对传统第四代移动通信(4G)承载网络只能满足2G、3G和4G无线业务回传承载,而无法满足5G无线回传对承载网络在带宽、时延、切片和可靠性等方面提出的更高需求,更不能满足5G各种业务场景中极高要求的实时保护倒换需求,以及增强型移动宽带(eMBB)场景中业务保护和快速收敛需求,文章提出一种分段路由(SR)隧道技术在5G承载网中的保护应用方案,该方案采用面向连接的SR(SR-TP)隧道增强技术进行5G承载网中南北向业务端到端的保护应用,采用最优SR(SR-BE)隧道技术进行东西向无连接业务的保护应用。实验结果表明,与传统4G承载网保护方案相比,该方案能全面解决5G eMBB业务场景对承载网的各种需求,业务保护倒换均在50 ms内完成,能全面满足电信级保护倒换要求。As the traditional 4th Generation Mobile Communication(4G)bearer network can only meet the 2G,3G and 4G wireless service backhaul bearer,it cannot meet the higher requirements of 5G wireless backhaul on the bearer network in terms of bandwidth,delay,slicing,and reliability.It also cannot satisfy the extremely demanding real-time protection switching requirements in various 5G service scenarios,as well as the service protection and fast convergence requirements in the enhanced Mobile Broadband(eMBB)scenario.In order to solve this issue,the article proposes a Segmented Routing(SR)tunnel technology in the 5G bearer network protection application scheme.This scheme adopts the connection-oriented SR-Transport Profile(SR-TP)tunnel enhancement technology for the end-to-end protection application of the north-south services in the 5G bearer network,and the optimal SR-Best Effort(SR-BE)tunnel technology for the east-west direction protection applications for connectionless services.Experimental results show that,compared with the traditional 4G bearer network protection scheme,it can fully solve the various requirements of the 5G eMBB service scenario for the bearer network.The service protection switching is completed within 50 ms,which can fully meet the carrier-level protection switching requirements.

关 键 词：分段路由 第五代移动通信承载网 面向连接的分段路由隧道1∶1保护 最优分段路由隧道保护 增强型移动宽带业务保护 

分 类 号：TN929.5[电子电信—通信与信息系统]