5G NR V2X: 面向自动驾驶车队的高可靠超低时延侧行链路

NRV2X 规范了 Mode 2 分布式自主信道资源调度、PSFCH 物理侧行反馈信道 HARQ 确认机制以及基于车规的高精度轨迹预测共享协议。

5G NR Sidelink V2X Architecture

Central Controller: 5G NR Sidelink — Rel-16/17 V2X

Cooperative ITS Nodes & Sidelink Mesh

Sub-ms Latency
Groupcast / Unicast
PSFCH HARQ
Flexible Numerology
Sidelink RRC

超越基础安全：实现高带宽协同机动

传统 V2X 仅广播基础遥测数据，而 5G NR V2X 引入了灵活的参数集、物理侧行链路反馈信道，以及面向编队行驶与传感器共享的连接导向通信。

Core Engineering Areas

Flexible Numerology & Subcarrier Spacing — Adapting 15, 30, 60, and 120 kHz subcarrier spacing to optimize latency and Doppler robustness.
Sidelink Unicast & Groupcast — Connection management, pairing handshakes, and geographic distance-based acknowledgments.
High-Throughput Sensor Sharing — Streaming LiDAR feature vectors, stereo camera feeds, and occupancy grids between automated vehicles.

Technical Articles