5G SA共享网络时延优化策略  

5G SA Shared Network Delay Optimization Strategy

作　　者：欧阳恩山[1] 方云根[1] 田经化 OUYANG Enshan;FANG Yungen;TIAN Jinghua(Hunan Branch,China Unicom,Changsha Hunan 410014,China)

机构地区：[1]中国联通湖南省分公司,湖南长沙410014

出　　处：《通信技术》2022年第9期1217-1225,共9页Communications Technology

摘　　要：5G独立组网(Stand Alone,SA)对低时延高可靠通信(Ultra-Reliable Low-Latency Communications,uRLLC)业务场景的支持,拓展了它在垂直行业的应用,但在实际运营过程中,受多种因素的影响,5G用户端到端时延可能会大幅增加,这将直接降低网络性能和对时延敏感业务的感知。通过分析电联SA共享网络中影响时延的关键因素,并深入研究降低时延的关键技术,提出了基于无线网、承载网、核心网的端到端时延优化策略,包括网络结构优化、短径优先路由调度算法、无线空口参数优化等。最后,将该策略应用于现网,取得了明显的改善效果。The support of 5G SA networking for uRLLC(Ultra-Reliable Low-Latency Communications)expands its application in vertical industries.However,in the actual operation process,due to the influence of various factors,5G users’end-to-end delay may increase significantly,which will directly reduce its performance and perception.By analyzing the key factors that affect the delay in the SA shared network of Telecom and Unicom,and deeply studying the key technologies to reduce the delay,this paper puts forward an end-to-end delay optimization strategy of wireless network,bearer network and core network,including network structure optimization,short path first routing scheduling algorithm,wireless air interface parameter optimization,etc.Finally,the strategy is applied to the existing network,and the obvious improvement effect is achieved.

关 键 词：5G SA共享网络 端到端时延优化 短径优先 

分 类 号：TN929.5[电子电信—通信与信息系统]