面向工业互联网的5G-U与时间敏感网络融合架构与技术

doi:10.11959/j.issn.1000-436x.2021161

Abstract

Abstract:

Industrial Internet is one of enabling technologies for Industry 4.0.Networking is one indispensible technology of industrial Internet.The traffic types and communication requirements of typical industrial services were analyzed first.TSN (time-sensitive networking) and 5G-U (5G unlicensed) were considered as the promising wireline and wireless solutions for industrial Internet, respectively.The integration network architectures of 5G-U and TSN were presented based on four models, which included 5G-U as TSN networks, links, bridges/switches, and TSN as transport networks of 5G-U.The key technologies of the integrated architectures were integrations of time-synchronization plane, data plane, and control plane.Finally, research challenges and potential research directions in the filed were discussed.

Key words: time-sensitive networking, 5G unlicensed, time synchronization, data plane, control plane

CLC Number:

TP393

Yueping CAI, Dong LI, Chi XU, Zhen WANG, Xiaowen ZHANG. Integrating 5G-U with time-sensitive networking for industrial Internet: architectures and technologies[J]. Journal on Communications, 2021, 42(10): 43-54.

Figures/Tables 13

References 54

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流量类型	周期性/偶发性	典型周期	数据传输保证	抖动容限	数据分组丢失容限	典型数据大小/B	关键度	流量优先级
实时同步	周期性	100 μs~2 ms	最终期限	0	0	固定30~100	高	6
循环同步	周期性	500 μs~1 ms	时延界(t)	不超过t	0	固定50~1 000	高	5
循环异步	周期性	2 ms~20 ms	时延界(t)	不超过t	1~4帧	固定50~1 000	高	5
控制事件	偶发性	10 ms~50 ms	时延界(t)	—	可	可变100~200	高	4
报警和操作命令事件	偶发性	2s	时延界(t)	—	可	可变100~1 500	中	3
网络控制	周期性	50 ms~1 s	吞吐量	是	可	可变50~500	高	7
配置诊断	偶发性	—	吞吐量	—	可	可变500~1 500	中	2
视频	周期性	帧速率	吞吐量	—	可	可变1 000~1 500	低	1
音频/语音	周期性	采样速率	吞吐量	—	可	可变1 000~1 500	低	1
尽力而为	偶发性	—	无	—	可	可变30~1 500	低	0

对比项	5G-U	5G	Wi-Fi
频谱	授权频段+免授权频段	授权频段	免授权频段
流量可靠性	较高可靠性	高可靠性	可靠性和可用性无法保证
端到端时延	低时延（授权频段）	超低时延	超低时延但无法保证
移动性	移动性管理强	无中断移动性	服务中断难以预测
覆盖范围	广域和本地覆盖	广域和本地覆盖	本地覆盖
安全性	较高	高	低
成本	CAPEX、OPEX较低	CAPEX高	OPEX高
业务连续性	可与5G无缝切换	—	无法与5G交互
应用场景	关键性业务（授权频段）+非关键性业务（免授权频段）	关键性机器类通信等	企业非关键性用例

Integrating 5G-U with time-sensitive networking for industrial Internet: architectures and technologies

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