With the advent of autonomous vehicles, intelligent transportation systems based on the provision of real-time Vehicle-to-Vehicle (V2V) communications have become critical for enhancing road safety, traffic efficiency, and cooperative mobility. However, these communications between vehicles are significant because adversaries can act as a compromised node, traffic between them might be intercepted, or an attacker might inject false information, resulting in dangerous incidents. Attacks like phantom traffic jams caused by Sybil attacks, repeated broadcast 'Clear Path' messages leading to very close collisions that sophisticated security mechanisms are more important than ever. This study presents Continuous Authentication at Random Intervals (CARI), a security system tailored to the context of autonomous vehicle networks that offers the integrity of each message, but also adds a degree of randomness to the authentication process in the communication of the vehicles. As opposed to existing periodic or fixed-timing standards, CARI uses a randomized verification period making tampering, spoofing, and replay attacks much more challenging to execute.

In future wireless networks, radar (or sensing) and communication will be promising technologies. In particular, in wireless communications, integrating terrestrial and non-terrestrial networks using high-frequency spectrums, such as millimeter waves and terahertz, is a focus of attention. However, it faces the problem of doubly selective fading, considering both delay and Doppler. On the other hand, in radar (or sensing), it is necessary to estimate both delay and Doppler based on the transmitted and received signals to detect the distance and velocity of the target object. Namely, the common task in radar and communications is to find out both delay and Doppler. As a first step, we should consider how to design and shape the radio waveforms for the transmission signal. In our previous studies (in our research project), we have been investigating a novel Gabor radar and communication system, named Gabor RadCom scheme, which uses the Gabor division spread spectrum technology. In this paper, as a work-in-progress, we survey the research field, provide an overview of the scheme, and discuss future work.