Ensuring ultra-reliable and low-latency communication (URLLC) for 5G wireless and beyond is of capital importance and is currently receiving attention in academia and industry. At its core, URLLC mandates a from expected utility-based network design approaches, in which on average quantities (e.g., average throughput, average delay and response time) is no longer an option but a necessity. Instead, a and scalable framework which takes into account delay, reliability, size, network architecture, and topology (across access, edge, and core) decision-making under uncertainty is sorely lacking. The overarching goal this article is a first step to fill this void. Towards this vision, after definitions of latency and reliability, we closely examine various of URLLC and their inherent tradeoffs. Subsequently, we focus our on a plethora of techniques and methodologies pertaining to the of ultra-reliable and low-latency communication, as well as their through selected use cases. These results provide crisp insights the design of low-latency and high-reliable wireless networks.
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Bennis et al. (2018) studied this question.