Key Technologies in 5G: Network Architecture

To address the continuously increasing demand for high data rates, beside air interface technologies, there are requirements to introduce new and effective ways to design architecture of networks. This paper proposes several technologies which can be used as promising candidates to change the future of wireless communication architecture especially in Fifth generation (5G) wireless network. In this article, we discuss various promising cellular architectures such as full duplex communication, device-to-device communication, mobile femtocell, visible light communication and visualization in 5G.