High-Bandwidth Vehicular Sidelink (PC5) Systems

VehiclesLink establishes direct vehicle-to-vehicle wireless links without routing through cellular base stations. Operating on the 5.9 GHz ITS band using 3GPP Release 16 5G NR Sidelink, it provides the low-latency backbone for autonomous highway platooning.

Eliminating Cellular Network Tower Delays in Millisecond Platooning Loops

Autonomous truck platoons travelling at 100 km/h with 3-meter inter-vehicle spacing cannot tolerate the 60-millisecond round-trip lag of cloud-routed cellular networks. A single delayed brake packet causes catastrophic multi-vehicle pileups. VehiclesLink uses direct PC5 sidelink interfaces to deliver brake actuations directly in under 4 milliseconds.

Core Engineering Areas

• NR Sidelink Mode 2 Resource Allocation — Executing real-time blind decoding of Sidelink Control Information (SCI) to reserve future transmission subchannels and avoid packet collisions autonomously.
• Cooperative Adaptive Cruise (CACC) — Transmitting instantaneous lead-vehicle engine torque, friction estimates, and brake pedal travel directly to follower vehicles to eliminate string instability.
• Groupcast & Unicast Sidelink Sessions — Unlike broadcast-only DSRC, NR Sidelink supports directed groupcast and unicast sessions with physical-layer HARQ ACK/NACK signaling.

Technical Articles

• Deep-Dive into 3GPP Release 16 NR Sidelink Mode 2 Resource Allocation
• Guaranteed String Stability in Heavy Commercial Vehicle Platoons

Related Cluster Architecture Specifications

• AutomotiveSDV — Full SDV Stack & Reference Architecture
• A2HCard — Agent-to-Human (A2H) Interface Cards & In-Cabin Autonomous Interaction Manifests
• A2HumanCard — Standardized In-Vehicle AI Agent Capability Discovery, Trust & Authorization Cards
• AIDrivenSynBio — AI-Driven Synthetic Biology for Automotive In-Cabin Air Purification, Bio-Engineered Pathogen Scavengers & Molecular Biosensors