Real-Time Publish/Subscribe for the Industrial Internet of Things

工业物联网实时发布/订阅

• 批准号: 410407136
• 负责人: Professor Dr.-Ing. Gero Mühl
• 金额: --
• 依托单位: Lehrstuhl für Architektur von Anwendungssystemen
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/410407136?language=en
• 关键词: Real; Time; Publish; Subscribe; Industrial

The project RTiPS-4-IIoT deals with the Industrial Internet of Things (IIoT) in a future highly-flexible smart factory in that all information technology is seamlessly interconnected and employees, robots, and artificial intelligence cooperate tightly. Potential applications in a smart factory range from control of production having hard real-time constraints, over augmented reality environments with soft real-time constraints to best effort traffic, which connects operational information systems and office information technology. Supporting this mix of real-time constraints with varying strictness in a converged network infrastructure is challenging.For this scenario, a converged network infrastructure should offer flexible and decoupled m:n communication, while supporting several classes of real-time traffic at the same time. For an implementation, publish/subscribe communication is a good choice, as it is promoted and already used by standards, products, and projects in the area of the IIoT. However, existing approaches do currently not support hard real-time, because the flexibility of publish/subscribe is difficult to combine with the predictability necessary for hard real-time constraints. But this situation has changed with the advent of software defined networking (SDN) and time sensitive networking (TSN). With these new technologies, this combination now becomes practicable and also very promising. The project, therefore, researches a convergent network infrastructure that supports application-specific real-time constraints with varying strictness and that is implemented using publish/subscribe and software-defined networking. First, modeling real-time constraints in the context of publish/subscribe communication is researched. The developed models are, then, the basis for planning the communication relationshipsand for implementing them into the network using SDN and TSN. Later in the project, approaches to reconfigure a running system without sacrifying already guaranteed real-time constraints are investigated and it is ensured that planning also scales to larger scenarios.

该项目RTIPS-4-IIOT在一个未来的高度易受智能工厂中涉及工业互联网（IIOT），因为所有信息技术都是无缝互连的，员工，机器人和人工智能都紧密地合作。智能工厂中的潜在应用包括对生产具有艰苦的实时限制的控制，超过具有软实时限制的增强现实环境，到最佳努力流量，连接运行信息系统和办公信息技术。在融合的网络基础架构中支持实时约束的这种混合，这是具有挑战性的。对于这种情况，融合的网络基础架构应提供灵活且脱钩的M：N通信，同时支持几类实时流量。对于实施，发布/订阅通信是一个不错的选择，因为它是由IIOT领域的标准，产品和项目促进和使用的。但是，现有方法目前不支持艰苦的实时，因为发布/订阅的灵活性很难与艰苦的实时约束所需的可预测性结合使用。但是随着软件定义的网络（SDN）和时间敏感网络（TSN）的出现，这种情况发生了变化。借助这些新技术，这种组合现在变得可行，也非常有前途。因此，该项目研究了一个收敛的网络基础架构，该基础架构支持特定于应用程序的实时约束，具有不同的严格性，并使用发布/订阅和软件定义的网络实施。首先，研究了在发布/订阅通信的背景下对实时限制进行建模。那么，开发的模型是计划通信关系和使用SDN和TSN将它们实施到网络中的基础。在项目的后期，研究了重新配置运行系统而不牺牲已经保证的实时限制的方法，并确保计划还缩放到较大的方案。