[31]Godor,I.,et al."A Look Inside 5G Standards to Support Time Synchronization for Smart Manufacturing."IEEE Communications Standards Magazine 4.3(2020):14-21. [32]3GPP Technical Specification 23.502,"Procedures for the 5G System"[S],v16.5.1,published August 2020 [33]Liu Jindi,Li Dong,Zeng Peng.Research on Future Industrial Network Architecture Based on SDN and TSN AUTOMATION PANORAMA.2018.35(10):62-65. (刘金娣，李栋，曾鹏.基于SDN&TSN的未来工业网络架构探究).自动化博览，2018,35(10)：62-65.) [34]IEEE 802.1CB-2017,IEEE Standard for Local and metropolitan area networks-Frame Replication and Elimination for Reliability[S],published October 2017. [35]Belden white paper,"Time Sensitive Networking", published March 2020 https://www.belden.com/dfsmedia/fle38517e0cd4caa8blacb6619890f5e/7897-source. [36]Shu,Z.,and T.Taleb."A Novel QoS Framework for Network Slicing in 5G and Beyond Networks Based on SDN and NFV."IEEE Network PP.99(2020):1-8. [37]Godor I,Luvisotto M,Ruffini S,et al.A Look Inside 5G Standards to Support Time onization for Smart Manufacturing[J].IEEE Communications Standards Magazine,2020,4(3):14-21. [38]Vitturi S,Zunino C,Sauter T.Industrial Communication Systems and Their Future Challenges:Next-Generation Ethernet,IIoT,and 5G[J].Proceedings of the IEEE,2019,PP(6):1-18. [39]Cavalcanti D,Perez-RamirezJ,Rashid MM,et al.Extending Accurate Time Distribution and Timeliness Capabilities Over the Air to Enable Future Wireless Industrial Automation Systems].Proceedings of the IEEE,2019,PP(6):1-21. [40]Striffler T,Michailow N,Bahr M.Time-Sensitive Networking in 5th Generation Cellular Networks-Current State and Open Topics[C]//2019 IEEE 2nd 5G World Forum (5GWF)IEBE 2019. [41]Cai Yuekun.Research on production scheduling optimization ofintelligent factory[D].Southwest University of Science and Technology,2020. (蔡跃坤.智能工厂生产调度优化研究D].西南科技大学2020.) [42]Tao F,Zhang M.Digital twin shop-floor:A new shop-floor paradigm towards smart manufacturing.IEEE Access,2017, 5:20418 [43]IEC and IEEE,"Use Cases IEC/IEEE 60802,"[S],2018 [44]Zhao WD,Jiang BZ.Thoughts and practice of 5G+industrial internet.ZTE Technology Joural,2020,26(5):57 (赵维铎，蒋伯章.5G+工业互联网的思考与实践.中兴通讯技术，2020,26(5)57) Virtualization process of a sheet metal punching machine within the Industry 4.0 录用 [45]Aitor M,Gorka V,Aditor vision.International Jou e Design and Manufacturing (IJIDeM),2016,11(2):365[31] Godor, I. , et al. "A Look Inside 5G Standards to Support Time Synchronization for Smart Manufacturing." IEEE Communications Standards Magazine 4.3(2020):14-21. [32] 3GPP Technical Specification 23. 502, “Procedures for the 5G System” [S], v16.5.1, published August 2020. [33] Liu Jindi, Li Dong, Zeng Peng. Research on Future Industrial Network Architecture Based on SDN and TSN. AUTOMATION PANORAMA. 2018, 35(10): 62-65. (刘金娣, 李栋, 曾鹏. 基于 SDN&TSN 的未来工业网络架构探究[J]. 自动化博览, 2018, 35(10):62-65.) [34] IEEE 802.1CB-2017, IEEE Standard for Local and metropolitan area networks-Frame Replication and Elimination for Reliability[S], published October 2017. [35] Belden white paper, “Time Sensitive Networking”, published March 2020. https://www.belden.com/dfsmedia/f1e38517e0cd4caa8b1acb6619890f5e/7897-source. [36] Shu, Z. , and T. Taleb . "A Novel QoS Framework for Network Slicing in 5G and Beyond Networks Based on SDN and NFV." IEEE Network PP.99(2020):1-8. [37] Godor I , Luvisotto M , Ruffini S , et al. A Look Inside 5G Standards to Support Time Synchronization for Smart Manufacturing[J]. IEEE Communications Standards Magazine, 2020, 4(3):14-21. [38] Vitturi S , Zunino C , Sauter T . Industrial Communication Systems and Their Future Challenges: Next-Generation Ethernet, IIoT, and 5G[J]. Proceedings of the IEEE, 2019, PP(6):1-18. [39] Cavalcanti D , Perez-Ramirez J , Rashid M M , et al. Extending Accurate Time Distribution and Timeliness Capabilities Over the Air to Enable Future Wireless Industrial Automation Systems[J]. Proceedings of the IEEE, 2019, PP(6):1-21. [40] Striffler T , Michailow N , Bahr M . Time-Sensitive Networking in 5th Generation Cellular Networks - Current State and Open Topics[C]// 2019 IEEE 2nd 5G World Forum (5GWF). IEEE, 2019. [41] Cai Yuekun. Research on production scheduling optimization of intelligent factory[D]. Southwest University of Science and Technology, 2020. (蔡跃坤. 智能工厂生产调度优化研究[D].西南科技大学,2020.) [42] Tao F, Zhang M. Digital twin shop-floor: A new shop-floor paradigm towards smart manufacturing. IEEE Access, 2017, 5: 20418 [43] IEC and IEEE, “Use Cases IEC/IEEE 60802,”[S], 2018. [44] Zhao W D, Jiang B Z. Thoughts and practice of 5G+ industrial internet. ZTE Technology Journal, 2020, 26(5): 57 （赵维铎, 蒋伯章. 5G+工业互联网的思考与实践. 中兴通讯技术, 2020, 26(5): 57） [45] Aitor M, Gorka V, Aditor A, et al. Virtualization process of a sheet metal punching machine within the Industry 4.0 vision. International Journal on Interactive Design and Manufacturing (IJIDeM), 2016, 11(2): 365 录用稿件，非最终出版稿