  Rate-Splitting Multiple Access (RSMA) is a flexible and robust multiple
access scheme for downlink multi-antenna wireless networks. RSMA relies on
Rate-Splitting (RS) at the transmitter and Successive Interference Cancellation
(SIC) at the receivers. In this work, we study the performance of RSMA in the
scenarios related with the important core services of New Radio (NR) and 6G,
namely, enhanced Ultra-Reliable and Low-Latency (URLLC) and enhanced Mobile
Broadband Communications (eMBB). We present the optimal system designs
employing RSMA that target short-packet and low-latency communications as well
as robust communications with high-throughput under the practical and important
setup of imperfect Channel State Information at Transmitter (CSIT) originating
from user mobility and feedback latency in the network. We demonstrate via
numerical results that RSMA achieves significantly higher performance than
Space Division Multiple Access (SDMA) and Non-Orthogonal Multiple Access
(NOMA), and is capable of addressing the requirements for enhanced URLLC and
eMBB in 6G efficiently.
