This paper presents a protocol that optimizes message dissemination in C-V2X technology, crucial for advancing intelligent transportation systems (ITS) aimed at enhancing road safety. As vehicle density and velocity rise, the volume of data requiring communication significantly increases. By considering the risk levels that vehicles encounter and using inter-vehicle proximity as a key indicator of potential hazards, the proposed protocol prioritizes communication, allowing vehicles facing higher risks to transmit their messages first. Our results show that this prioritization effectively reduces the number of concurrent transmissions, leading to improved performance metrics such as packet delivery ratio, throughput, latency, and lower probabilities of channel congestion and collision.

翻译：本文提出了一种优化C-V2X技术中消息传播的协议，该技术对于旨在提升道路安全的智能交通系统（ITS）发展至关重要。随着车辆密度和速度的增加，需要通信的数据量显著上升。通过考虑车辆面临的风险等级，并将车辆间距离作为潜在危险的关键指标，所提出的协议对通信进行优先级排序，使面临较高风险的车辆能够优先传输其消息。我们的结果表明，这种优先级排序有效减少了并发传输的数量，从而提升了包括数据包投递率、吞吐量、时延在内的性能指标，并降低了信道拥塞和碰撞的概率。