In the near prospect, beyond 4G has the major objectives or difficulty that need to be addressed are improved capacity, better data rate, decreased latency, and enhanced quality of service. To meet these demands, radical improvements need to be made in cellular network architecture. This paper presents the consequences of a detailed study on the fifth generation (5G) cellular network structural design, challenges and some of the solution for promising technologies that are supportive in improving the structural design and gathering the demands of users. In this comprehensive review focuses 5G cellular network architecture, huge various input many output technologies, and device-to-device communication (D2D). Next, to with this, some of the promising technologies that are addressed in this paper include intrusion supervision, variety sharing with cognitive radio, ultra-dense networks, multi-radio access technology organization, full-duplex radios, and millimeter wave solutions for 5G cellular networks. In this paper, a universal possible 5G cellular set of connections architecture is proposed, which shows that D2D, small cell access points, network cloud, and the Internet of Things can be a part of 5G cellular network architecture. A comprehensive study is integrated concerning present research projects being conducted in different countries by research groups and institutions that are working on 5G technologies. Finally, this paper describes cloud technologies for 5G radio access networks and software-defined networks.