  Millimeter-wave (mmWave) spectrum is expected to support data-intensive
applications that require ultra-reliable low-latency communications (URLLC).
However, mmWave links are highly sensitive to blockage, which may lead to
disruptions in the communication. Traditional techniques that build resilience
against such blockages (among which are interleaving and feedback mechanisms)
incur delays that are too large to effectively support URLLC. This calls for
novel techniques that ensure resilient URLLC. In this paper, we propose to
deploy multilevel codes over space and over time. These codes offer several
benefits, such as they allow to control what information is received and they
provide different reliability guarantees for different information streams
based on their priority. We also show that deploying these codes leads to
attractive trade-offs between rate, delay, and outage probability. A
practically-relevant aspect of the proposed technique is that it offers
resilience while incurring a low operational complexity.
