  Fifth generation mobile communication systems (5G) have to accommodate both
Ultra-Reliable Low-Latency Communication (URLLC) and enhanced Mobile Broadband
(eMBB) services. While, eMBB applications support high data rates, URLLC
services aim at guaranteeing low-latencies and high-reliabilities. eMBB and
URLLC services are scheduled on the same frequency band, where the different
latency requirements of the communications render the coexistence challenging.
In this survey, we review, from an information theoretic perspective, coding
schemes that simultaneously accommodate URLLC and eMBB transmissions and show
that they outperform traditional scheduling approaches. Various communication
scenarios are considered, including point-to-point channels, broadcast
channels, interference networks, cellular models, and cloud radio access
networks (C-RANs). The main focus is on the set of rate pairs that can
simultaneously be achieved for URLLC and eMBB messages, which well captures the
tension between the two types of communications. We also discuss
finite-blocklength results where the measure of interest is the set of error
probability pairs that can simultaneously be achieved on the two communication
regimes.
