Author(s)

Ruixuan Tu^1*, Ruxun Xiang^2*, Yang Xu³, Yihan Mei⁴

¹Sino-U.S. Program Attached Middle School to Jiangxi Normal University, Nanchang, China.
²School of Communication Engineering, Chengdu University of Information Technology, Chengdu, China.
³UoG-UESTC Joint School University of Electronic Science and Technology of China, Chengdu, China.
⁴Lemania Altdorf Ecole, Shanghai, China.

5G is a new generation of mobile networking that aims to achieve unparalleled speed and performance. To accomplish this, three technologies, Device-to-Device communication (D2D), multi-access edge computing (MEC) and network function virtualization (NFV) with ClickOS, have been a significant part of 5G, and this paper mainly discusses them. D2D enables direct communication between devices without the relay of base station. In 5G, a two-tier cellular network composed of traditional cellular network system and D2D is an efficient method for realizing high-speed communication. MEC unloads work from end devices and clouds platforms to widespread nodes, and connects the nodes together with outside devices and third-party providers, in order to diminish the overloading effect on any device caused by enormous applications and improve users’ quality of experience (QoE). There is also a NFV method in order to fulfill the 5G requirements. In this part, an optimized virtual machine for middle-boxes named ClickOS is introduced, and it is evaluated in several aspects. Some middle boxes are being implemented in the ClickOS and proved to have outstanding performances.

5th Generation, Network, Virtualization, Device-To-Device communication, Base Station, Direct Communication, Interference, Multi-Access Edge Computing, Mobile Edge Computing

Tu, R. , Xiang, R. , Xu, Y. and Mei, Y. (2019) A Review in the Core Technologies of 5G: Device-to-Device Communication, Multi-Access Edge Computing and Network Function Virtualization. International Journal of Communications, Network and System Sciences, 12, 125-150. doi: 10.4236/ijcns.2019.129010.