Millimeter-Wave Vehicular Communication Systems

Millimetre-wave (mmWave) vehicular communication systems exploit spectrum in the 30–300 GHz range to deliver multi-gigabit data rates and end-to-end latencies of a few milliseconds, enabling advanced driver assistance, cooperative manoeuvring and high-definition sensor sharing. By harnessing highly directional beamforming, these systems overcome path loss and interference to support Vehicle-to-Vehicle (V2V), Vehicle-to-Infrastructure (V2I) and Vehicle-to-Everything (V2X) links. Key applications include platooning of autonomous vehicles, cooperative perception for urban intersections and real-time off-board processing of LiDAR and video streams. Yet high mobility, frequent blockages by other vehicles or obstacles and rapid beam misalignment present critical challenges. Recent efforts focus on integrating onboard sensors for predictive beam steering, deploying vehicular relays to mitigate blockage events and optimising beamwidth for highway scenarios. Channel modelling and ray-tracing studies have characterised propagation in varied road environments, revealing the trade-off between link reliability and antenna directivity. Software-defined network architectures are emerging to centralise resource scheduling and facilitate dynamic handover across heterogeneous sub-6 GHz and mmWave bands. Together, these advances point to a globally significant transformation of intelligent transport systems, where ultra-reliable low-latency communication underpins the safety and efficiency of next-generation connected and automated vehicles.

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Millimeter-Wave Vehicular Communication Systems publication trend

The graph below shows the total number of articles in millimeter-wave vehicular communication systems across all publications each year (not limited to Nature Index journals).

Technical terms

Millimetre-wave (mmWave): Radio spectrum at frequencies between 30 and 300 GHz, offering large contiguous bandwidths for high data-rate links.

Vehicle-to-Everything (V2X): A collective term for communication between a vehicle and any entity, including other vehicles, infrastructure or pedestrians.

Beamforming: A signal processing technique that uses antenna arrays to direct radio energy into narrow spatial beams, enhancing link gain and reducing interference.

Beam alignment: The process of steering transmitter and receiver beams to maintain line-of-sight or dominant multipath components during mobility.

Blockage: Signal attenuation caused by physical obstacles, such as vehicles or buildings, interrupting high-frequency line-of-sight paths.

References

1. Signalling Design in Sensor-Assisted mmWave Communications for Cooperative Driving. IEEE Open Journal of Intelligent Transportation Systems (2023).
2. Sensor-Aided V2X Beam Tracking for Connected Automated Driving: Distributed Architecture and Processing Algorithms. Sensors (2020).
3. Beamwidth Optimization for Millimeter-Wave V2V Communication Between Neighbor Vehicles in Highway Scenarios. IEEE Access (2020).
4. Mitigating the Impact of Blockages in Millimeter-Wave Vehicular Networks Through Vehicular Relays. IEEE Open Journal of Intelligent Transportation Systems (2021).
5. Performance Evaluation of 5G Millimeter-Wave-Based Vehicular Communication for Connected Vehicles. IEEE Access (2022).
6. Channel Characterization for Vehicle-to-Infrastructure Communications in Millimeter-Wave Band. IEEE Access (2020).
7. Towards Safe Automated Driving: Design of Software-Defined Dynamic MmWave V2X Networks and PoC Implementation. IEEE Open Journal of Vehicular Technology (2021).