  Industry-led initiatives such as the Next G Alliance (NGA) are currently
considering how to dimension the spectrum required to support new classes of
services envisioned beyond 5G. In particular, support for URLLC brings the
challenge of how to dimension stochastic wireless networks to meet stringent
reliability and latency requirements. Our analysis indicates that the bandwidth
needed to meet URLLC goals can be in the order of gigahertz, beyond what is
available in today's mobile networks. Network densification can ease those
bandwidth needs but requires new deployment strategies involving substantially
larger numbers of sites. As an alternative, we consider multi-connectivity and
multi-operator network sharing as efficient ways to reduce the demand for
bandwidth without outright deployment of additional base stations.
