#### Significance of IEEE 802.11 ax  
WLANs are facing significant expansion in internet-centric applications. High-tech markets are using WLANs, and their deployment is growing rapidly in private and public areas, such as cafes, shopping malls, hotels, bus/train stations, restaurants, airports, etc. Due to the exponential expansion in the usage of Wi-Fi networks, it is necessary to study its use pattern in dense environments for which the IEEE 802.11 standard was not specially designed. As the number of orthogonal channels available for IEEE 802.11 is limited, the status of OBSS in WLAN-based networks is redundant. Collision avoidance approaches tend to decrease network performance and increase transmission delays; however, all medium is never used despite the acceptable collision potential. While the present IEEE 802.11 standards have been developed to enhance the overall peak performance of several nodes in the network, appropriate mitigation of the increase in interference encountered has not been tackled yet. In addition, the channel access method is highly protective and results in reduced spatial reuse. This standard aims to use technologies that will enhance the physical bit rate, reduce the data rate, and enhance spectrum reuse by enabling highly efficient multiple users. Due to the exponential growth in the use of Wi-Fi networks, it is necessary to study its use pattern in dense environments for which the legacy IEEE 802.11 standard was not specially designed. Considering the performance issues affecting WLAN in dense environments, a study group was launched in May 2013 called High-Efficiency WLAN (HEW) within the working group of IEEE 802.11 [4]. HEW activities considered spectral efficiency to improve system performance in high-density environments, including a number of APs and non-AP nodes. Following the success of the Project Approval Request (PAR) and Criteria for Standard Development (CSD), the group was promoted to status of team to design a new standard; IEEE 802.11 ax, in July 2014. IEEE 802.11 ax standard is the latest contribution to the innovation journey [5; 6]. The Wi-Fi Alliance established a new naming standard with previous known as Wi-Fi 4 (802.11n) and Wi-Fi 5 (802.11 ac). The development of the 802.11 ax amendment began in 2013 when a team of technical experts met to discuss the challenges that Wi-Fi may face in the years to come. Wi-Fi was threatened by the possibility of being the victim of its success because of its global use. With more devices, Wi-Fi would experience increased interference and poor performance. The working group discussed data and solutions to the problem and finally described the requirements for Wi-Fi 6, also known as Highly Efficient WLANs (HEW). This new generation of Wi-Fi will be smart enough to enable dense and complete wireless environments in the future; 802.11 ax takes advantage of the strengths of 802.11 ac, with the added scalability and flexibility that allow existing and new networks to operate next-generation applications. So, 802.11 ax takes advantage of the strengths of 802.11 ac, with the added scalability and flexibility that allows existing and new networks to operate next-generation applications. This new generation of Wi-Fi will be smart enough to enable dense and complete wireless environments in the future. However, the channel access method remains the same to ensure backward compatibility. This approach is robust; however, it can lead to inefficient operation in dense scenarios because of sudden increases and decreases in the Contention Window. This problem is described in detail in Section IV of the paper. Artificial Intelligence (AI) can solve complex problems without the need for explicit programming. Motivated by its applications to several beneficial tasks like image recognition, research community has encouraged applications of AI in wireless communication [7]. AI practices for network operations, automation, and management deal with designing and implementing AI practices to enhance how we deal with networking nowadays.