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.