Cellular V2X: Direct PC5 Sidelink and Wide-Area Uu Network Coordination

Cellular-V2X delivers unified technical specifications for direct device-to-device communication (PC5) and cellular wide-area networking (Uu), underpinning global intelligent transport deployments.

3GPP C-V2X V2X Architecture

Central Controller: 3GPP C-V2X — PC5 & Uu

Cooperative ITS Nodes & Sidelink Mesh

PC5 Mode 4
Uu Slicing
eCall / V2N
Rel-16 HARQ
QoS Flows

Direct Sidelink Speed Coupled with Nationwide Cellular Reach

C-V2X establishes a hybrid paradigm: direct PC5 sidelink provides sub-10ms latency for safety-critical collision avoidance, while the cellular Uu interface connects vehicles to traffic management centers.

Core Engineering Areas

PC5 Sidelink PHY and MAC Layer — Technical evaluation of SC-FDMA, DMRS reference patterns, and semi-persistent scheduling on the 5.9 GHz PC5 band.
Cellular Uu & Network Slicing — Architecting dedicated 5G network slices for teleoperated driving, hazard warnings, and high-definition map updates.
C-V2X Modem & RF Front-End — Hardware engineering for 5.9 GHz automotive modems, power amplifiers, and GNSS timing precision.

Technical Articles

Related Cluster Architecture Specifications

AutomotiveV2X — Connected Vehicle-to-Everything & Cooperative ITS Architecture
NRV2X — 5G NR V2X Sidelink, Sub-Millisecond Latency & High-Rate Sensor Sharing
ISACV2X — Integrated Sensing and Communication (ISAC) for Automotive V2X
QuantumV2X — Post-Quantum Cryptography (PQC) & Quantum-Resistant V2X Security