V2X & connected vehicles: NR sidelink (PC5), V2V/V2I/V2P

NR Sidelink for V2X Communication

NR Vehicle-to-Everything communication operates over two complementary interfaces. The Uu interface connects vehicles to the gNB for network-assisted services like remote driving, HD map updates, and traffic management. The PC5 sidelink interface enables direct device-to-device communication without network involvement, critical for safety-of-life latency requirements. NR sidelink supports two resource allocation modes: Mode 1 where the gNB schedules sidelink resources, and Mode 2 where the UE autonomously selects resources using sensing-based mechanisms. Mode 2 is essential for V2X since…