Leveraging Modulation and Coding Schemes (MCS) in 5G New Radio (NR) Sidelink represents one key strategy to provide sufficient capacity required by future 5G for Vehicle-to-Everything (V2X) services for intelligent vehicles. Early studies either directly adopt the previously optimised QPSK 1/2 by 802.11p/C-V2X or suggest an optimal MCS value under a particular context. In this paper, we identify a MCS value optimal under any context, by evaluating the impact of MCS on V2X broadcast communication considering multiple varying parameters (e.g. variable packet size, transmit rate or density) representative of different 5G V2X services.

Delivering ultra-reliable low-latency communication (URLLC) services on 5G New Radio (NR) is critical for extended Vehicle-to-everything (V2X) applications. Early studies focused either on infrastructure V2X communications, or exclusively evaluating performance on mmWave band, but never so far for V2X Sidelink communications. In this paper, we evaluate the feasibility of achieving URLLC critical requirements for 5G NR V2X Sidelink communication at the V2X 5.9 GHz band. We propose a higher 5G-NR numerology completed by a deterministic scheduler and propose an analytical V2X SL admission control algorithm to reach tight URLLC requirements.