On the Cost of Achieving Downlink Ultra-Reliable Low-Latency Communications in 5G Networks

We determine the cost of serving Ultra-Reliable Low-Latency Communications (URLLC) traffic (1 ms one-way latency, 99.999% reliability) in 5G New Radio (NR) Macro cellular networks. The is measured as degradation enhanced Mobile Broadband (eMBB) downlink system capacity when a certain offered load URLLC on same radio carrier. A methodology for assessing presented, which takes into account all aspects related to configuring suitable resource allocation and link adaptation strategy, well associated control channel overhead due use mini-slots with very frequent resources monitoring data assignments. When taking holistic view performance, advanced system-level simulation results show that 1 Mbps an eMBB throughput reduction up 60 Mbps, i.e. can be times more costly than traditional best-effort. presented used by service providers, such operators, understanding dimensioning tradeoffs impact towards network services adding their portfolio.