In vehicle-to-everything (V2X) communications, reliability is one of the most important performance metrics in safety-critical applications such as advanced driving, remote driving, and vehicle platooning. In this paper, the link reliability of unicast concurrent transmission in mode 1 (centralized mode) of 5G New Radio based V2X (NR-V2X) is analyzed. The closed-form expression of link reliability for concurrent unicast transmission is firstly derived for a highway scenario under a given interference distance distribution. On this basis, according to the macroscopic configuration of the system, a method to control the number of concurrent transmission nodes is proposed, including the communication range, message packet size, and the number of lanes, etc. The results indicate that the proposed method can maximize the system load on the premise of satisfying the link reliability requirements.

翻译：在车辆对一切(V2X)通信中,可靠性是安全关键应用,如先进驾驶、远程驾驶和车辆排队方面最重要的性能衡量标准之一,在本文件中,分析了5G新电台基于V2X(NR-V2X)模式1(集中模式)的单声道同时传输的可靠性,在特定干扰距离分布下,对同时的单声道传输的闭路式可靠性表示,根据该系统的宏观结构,提议了一种控制同时传输节点数量的方法,包括通信范围、信息包大小和车道数量等。结果显示,拟议的方法可以在满足链接可靠性要求的前提下最大限度地增加系统负荷。