Beyond 5G URLLC evolution: New service modes and practical considerations
Hirley Alves, Gweon Do Jo, Jaesheung Shin, Choong Il Yeh, Nurul Huda Mahmood, César Thadeo de Lima, Chanho Yoon, Giyoon Park, Nandana Rahatheva, Ok-Sun Park, Seokki Kim, Eunah Kim, Ville Niemelä, Hyeon Woo Lee, Ari Pouttu, Hyun Kyu Chung, Matti Latva‐aho · ITU Journal on Future and Evolving Technologies · 2022
Ultra-Reliable Low Latency Communications (URLLC) arose to serve Industrial IoT (IIoT) use cases within 5G. However, currently, it has inherent limitations in supporting future services. Therefore, in this article, based on state-of-the-art research and practical deployment experience, from two distinct test networks from Finland and South Korea, we introduce and advocate for three variants of critical Machine-Type Communications (MTC), namely, broadband, scalable and extreme URLLC. Moreover, we discuss use cases and key performance indicators and identify two critical technology enablers for each new service class. Finally, we bring practical considerations from the IIoT testbed and provide an outlook towards new research directions.