Vehicle-to-Vehicle Communications With Focus on the Usage of Millimeter Wave Technology

The automotive industry is working on improving traffic safety, and efficiency, and providing comprehensive information and entertainment services on board, which has recently attracted more and more attention from both industry and academia. We are at a turning point. Wireless communication between vehicles has proven to be an important element of the altitude road traffic system over the last decade, with improvements in in-vehicle communication and altitude road traffic systems.<br><br>Today, new technologies are being incorporated into vehicles that recognize potential road hazards and improve the driving experience, such as millimeter-wave technology data, which is an important factor. Sensors play an important role in vehicular communications, and as large amounts of data are collected, the need for more sensors is rapidly increasing. The mmW frequency band ranges from 3GHz to 300GHz.<br><br>The need to understand the inner workings of millimeter-wave technology related to vehicles is of paramount importance. This article focuses on vehicle-to-vehicle communication technology and discusses the relationship between the 5G mm wavelength band and vehicle communication, as well as the factors that enable efficient vehicle communication. Vehicle communication is characterized by the dynamic environment of the communication system, high maneuverability, and relatively low antenna height.<br><br>This paper provides an up-to-date overview of vehicle communication propagation channel models, starting with specific propagation characteristics in terms of communication scenarios, V2V connection types, antenna placement/diversity, unsteadiness, and more.<br><br>This article presents past and present research on vehicle channel properties and modeling, an important underlying characteristic that distinguishes vehicle communications from other types of communication systems. These features make vehicle propagation and channel modeling particularly difficult. After analyzing the frequency resource allocation, we will discuss the applications that may be used in this vehicle communication in the millimeter wave. The features and key concepts of the various vehicle communication channel models are shown in the millimeter-wave(mmWave) frequency band. The strengths and weaknesses of the most important works in this area are comprehensively discussed, compared and their contributions outlined. Finally, we present key future challenges and research directions for modeling reliable vehicle communications, such as the effects of vegetation, pedestrians, and common scatterers. The most relevant vehicle propagation and channel models are categorized and described with a particular focus on the usefulness of the model. These are presented as research opportunities soon.