Ultra-reliable low latency communications (URLLC) arose to serve industrial IoT (IIoT) use cases within the 5G. Currently, it has inherent limitations to support future services. Based on state-of-the-art research and practical deployment experience, in this article, we introduce and advocate for three variants: broadband, scalable and extreme URLLC. We discuss use cases and key performance indicators and identify technology enablers for the new service modes. We bring practical considerations from the IIoT testbed and provide an outlook toward some new research directions.
翻译：超可靠的低潜伏通信(URLLC)是为5G范围内工业IOT(IIOT)使用案例服务的。目前,它在支持未来服务方面存在着固有的局限性。根据最新的研究和实际部署经验,我们在本条中提出并倡导三种变式:宽带、可扩展和极端的URLLC。我们讨论使用案例和关键业绩指标,并确定新的服务模式的技术促进因素。我们从IIOT测试台中提出实际考虑,并对一些新的研究方向提出展望。
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