Abstract
With the freezing and commercial use of release 16 (R16) standard in the fifth generation (5G) wireless communication network, the applications of 5G in virtual reality/augmented reality (VR/AR), ultra-high-definition video, unmanned aerial vehicle (UAV), internet of things (IoTs), and other fields have also begun to develop simultaneously. However, with the in-depth deployment of 5G, some problems such as the high cost and shortage of frequency bands have become prominent. 5G has become a new focus of competition in the communications field on a global scale, and various countries are actively deploying to seize the leading power in 5G development. In this comprehensive study, we will introduce the standardization process of 5G and the deployment of various countries and introduce the network architecture of 5G. In addition, we will analyse the various challenges of 5G deployment and give some research directions for future development.
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