A Review of Wi-Fi 6 : The Revolution of 6th Generation Wi-Fi Technology

In the past few decades, there's been a massive increase in the number of Internet users, gadgets, and Internet connectivity all around the world. These factors, combined with digital transformation in all industries worldwide and increasing utilization of bandwidth-demanding applications, have made significant contributions to the condition for quicker and universal wireless network connection. To tackle these problems, the next-generation Wi-Fi needs to address the problem of low efficiency of the whole Wi-Fi network resulting from the access of more terminals. From 2014, the IEEE 802.11 working group started to address this challenge and anticipated to release of 802.11ax also known as Wi-Fi 6 in 2019. Such a new standard is going to introduce technologies like uplink MultiUser MIMO (MU-MIMO), (OFDMA) Orthogonal frequency division multiple access, and higher-order coding 1024-QAM to resolve network capacity as well as transmission effectiveness problems in terms of spectrum resource use and multiuser access. One of the objectives of Wi-Fi 6 is to enhance the regular user throughput by at least four times as well as increase the number of concurrent users by higher than three times within the dense-user environment in comparison with Wi-Fi 5. Wi-Fi 6 is the next-generation technology based on the IEEE 802.11ax standard. Such technology will allow the connectivity of next-generation Wi-Fi. Wi-Fi 6 will provide the coverage, capacity, and performance to efficiently meet the growing and changing use of Wi-Fi technology. Wi-Fi 6 is a brand-new jargon to readily understand Wi-Fi networking devices as well as its connectivity. This study will examine the various key characteristics and the new generational approach of Wi-Fi 6.