On Enabling Technologies for the Internet of Important Things
On Enabling Technologies for the Internet of Important Things
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DOI：
10.1109/access.2019.2901509
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发表时间：
2019-02
期刊：
影响因子：
3.9
通讯作者：
Marten Lohstroh;Hokeun Kim;J. Eidson;Chadlia Jerad;Beth Osyk;Edward A. Lee
中科院分区：
文献类型：
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作者：
Marten Lohstroh;Hokeun Kim;J. Eidson;Chadlia Jerad;Beth Osyk;Edward A. Lee
物联网在网络物理系统（cps）中利用互联网技术，但互联网的协议和原则是为与信息系统而不是网络物理系统交互而设计的。首先，在任何广泛的互联网技术中，及时性都不是一个因素，服务质量的特征几十年来一直被例行公事地忽略。此外，对于事物而言，安全，不受物理伤害，甚至比信息安全更重要，重点放在互联网上。然而，互联网的属性在cps中是有价值的，包括全局命名空间、可靠的（最终的）消息传递、通过非对称加密实现的端到端安全性、基于证书的身份验证，以及从云中多个来源聚合数据的能力。本文讨论和调查了架构方法、通信协议和编程模型，这些方法有望弥合差距，使互联网技术甚至可以在安全关键的网络物理应用（如工厂自动化和运输）中使用。具体来说，我们认为托管在边缘计算机上的智能网关是对基于云的服务的补充；它们可以对时间和安全性提供更严格的控制，从而对网络中断具有健壮性，在管理事物之间的交互方面发挥积极作用，并将安全关键服务与尽力而为的服务隔离开来。我们解释了如何利用时间敏感网络技术来可靠地编排多种事物，以及如何使用定义良好的时间概念来扩展我们的编程模型，从而使系统更具确定性和可测试性。
The Internet of Things leverages Internet technology in cyber-physical systems (CPSs), but the protocols and principles of the Internet were designed for interacting with information systems, not cyber-physical systems. For one, timeliness is not a factor in any widespread Internet technology, with quality-of-service features having been routinely omitted for decades. In addition, for things, safety, freedom from physical harm, is even more important than information security, the focus on the Internet. Nevertheless, properties of the Internet are valuable in CPSs, including a global namespace, reliable (eventual) delivery of messages, end-to-end security through asymmetric encryption, certificate-based authentication, and the ability to aggregate data from a multiplicity of sources in the cloud. This paper discusses and surveys architectural approaches, communication protocols, and programming models that promise to bridge the gap, enabling the use of the Internet technologies even in safety-critical, cyber-physical applications such as factory automation and transportation. Specifically, we argue that smart gateways hosted on edge computers complement cloud-based services; they can provide tighter control over timing and security that is robust against network outages, play an active role in managing interactions between things, and isolate safety-critical services from best-effort services. We explain how time sensitive network technology can be leveraged to reliably orchestrate a multiplicity of things, and how augmenting our programming models with a well-defined notion of time can make systems more deterministic and more testable.