On the Reliability and Concurrent Unicast Transmission Node Control of 5G NR-V2X Networks

TL;DR

This paper analyzes the reliability of concurrent unicast transmissions in 5G NR-V2X networks, deriving a closed-form expression and proposing a control method to optimize system load while ensuring reliability in highway scenarios.

Contribution

It provides the first closed-form reliability expression for concurrent unicast in 5G NR-V2X and introduces a node control method to optimize system load under reliability constraints.

Findings

Closed-form reliability expression derived for highway scenarios.

Proposed method effectively maximizes system load while maintaining reliability.

Control parameters include communication range, message size, and lane count.

Abstract

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.