What does it take for mobile networks to support ultra-reliable low-latency communication?

The support of ultra-reliable low-latency (URLLC) is a key distinction between today's and tomorrow's mobile networks. The challenge lies in meeting the stringent reliability and latency requirements in stochastic wireless networks. In this paper, we study what is needed from the mobile network to support URLLC at the network scale. The type and magnitude of resources demanded to support URLLC significantly vary according to the URLLC requirement of interest and can even exceed today's norm in mobile communication. Higher frequency bands, despite greater path loss, exhibit features that can facilitate URLLC. In addition, we also consider how network sharing can ease the provision of additional resources to meet URLLC goals.