URLLC is an important new feature brought by 5G, with a potential to support a vast set of applications that rely on mission-critical links. In this article, we first discuss the principles for supporting URLLC from the perspective of the traditional assumptions and models applied in communication/information theory. We then discuss how these principles are applied in various elements of system design, such as use of various diversity sources, design of packets, and access protocols. The important message is that there is a need to optimize the transmission of signaling information, as well as a need for lean use of various sources of diversity.

中文翻译：

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超可靠低延迟通信的无线接入：原理和构建模块


URLLC 是 5G 带来的一项重要新功能，有可能支持大量依赖关键任务链路的应用。在本文中，我们首先从通信/信息理论中应用的传统假设和模型的角度讨论支持 URLLC 的原则。然后我们讨论如何将这些原则应用于系统设计的各个元素，例如各种分集源的使用、数据包的设计和访问协议。重要的信息是需要优化信令信息的传输，以及需要精益使用各种多样性来源。