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摘要: 面向工業制造領域數字化、網絡化及智能化轉型需求，簡要介紹了時間敏感網絡的起源及發展現狀，并針對第三代合作伙伴計劃(3GPP)中5G支持TSN的標準研究進行了闡述，重點針對5G與TSN協同面臨的技術挑戰進行了分析，進一步闡述兩種異構網絡間協同所需的時間同步、連接增強及統一資源管理等關鍵技術，最后給出5G-TSN協同網絡在智能工廠中的應用場景，旨在深化推動5G融入工業控制領域，實現5G先進信息通信技術與工業應用的深入融合。
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關鍵詞:
- 第五代移動通信網絡 /
- 時間敏感網絡 /
- 工業互聯網 /
- 5G與TSN協同傳輸 /
- 智能工廠
Abstract: Applying fifth-generation mobile communication networks (5G) and time-sensitive networking (TSN) has become a new trend in industrial automation. As the new generation of mobile communication technology, 5G is featured with a large bandwidth, low latency, ultrareliable connection, and multiservice slicing capacities. As the evolution goal of industrial ethernet, TSN is featured with a deterministic transmission with bounded latency and jitter and guaranteed high reliability. Both technologies have been designed to provide converged communication for various services on common network infrastructure. 5G and TSN coordination can effectively promote the integration of Information Technology (IT) and operational technologies (OT), which will be a key enabler of the industrial internet. Therefore, the collaborative transmission of 5G and TSN has become a focus for the industry and academe. “5G + TSN” is envisioned to be the basic communication network for future smart factories, which can integrate various field-level industrial communication technologies and ensure end-to-end industrial data transmission reliability. However, 5G and TSN networks are different in the transmission methods, protocols, control and management mechanisms, etc. How to realize an efficient interconnection and coordination of 5G and TSN is a hot topic and difficult task currently. Following the general requirements of digital, digital-networked, and new-generation intelligent manufacturing, this article first introduced the state-of-the-art of time-sensitive networks, and it also elaborated on the standardization progress of 5G supporting TSN in 3GPP. This work then emphasized the main challenges for the coordinated transmission of 5G and TSN networks and analyzed key technologies such as time synchronization, connection enhancement, and unified resource management to support the coordination of 5G and TSN heterogeneous networks. Finally, the application scenarios of “5G + TSN” in a smart factory were given, aiming to deepen the integration of 5G into industrial control and flourish 5G-based industrial applications. -
圖 6 5G-TSN聯合資源管理及QoS映射示意圖
Figure 6. Key technologies for 5G-TSN joint management and QoS mapping
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