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Wireless Access in Ultra-Reliable Low-Latency Communication (URLLC)

2019; IEEE Communications Society; Volume: 67; Issue: 8 Linguagem: Inglês

10.1109/tcomm.2019.2914652

1558-0857

Petar Popovski, Čedomir Stefanović, Jimmy Jessen Nielsen, Elisabeth de Carvalho, Marko Angjelichinoski, Kasper Fløe Trillingsgaard, Alexandru-Sabin Bana,

Cooperative Communication and Network Coding

The future connectivity landscape, and notably, the 5G wireless systems will feature Ultra-Reliable Low Latency Communication (URLLC). The coupling of high reliability and low latency requirements in URLLC use cases makes the wireless access design very challenging, in terms of both the protocol design and of the associated transmission techniques. This paper aims to provide a broad perspective on the fundamental tradeoffs in URLLC, as well as the principles used in building access protocols. Two specific technologies are considered in the context of URLLC: massive MIMO and multi-connectivity, also termed interface diversity. This paper also touches on the importance of the proper statistical methodology for designing and assessing extremely high-reliability levels.