The journey of wireless communication began with Marconi's wireless telegraphy in the 19 th century, evolving into 1G analog networks for voice communication. The transition to 2G brought digitalization, enabling encrypted and data services. The 3G era introduced various data services like Internet access and video calls, while 4G/LTE (Long-Term Evolution) networks, initiated in 2009, achieved high-speed mobile data transmission. Technologically and commercially successful, 4G reshaped society with widespread smartphone usage and advanced information technologies. Initially, 1G and 2G networks facilitated basic voice and text services. With the advent of 3G and 4G, users gained access to images and videos, integrating richer forms of media into communication. The 5G era introduces the use of live ultra-high-definition 3D data, significantly enhancing the quality and depth of information exchange. Anticipations for 6G suggest the possibility of achieving a pervasive virtual presence, marking a profound shift in how we perceive and interact with digital environments [1]. It is noted that the timeline's spacing is deliberately adjusted to illustrate the progressively expanding capabilities of these networks over time. The concept of 5G emerged in 2014, emphasizing network densification, millimeter-wave transmission, and massive Multiple Input-Multiple Output (MIMO) architecture as key technologies. By 2020, major companies and operators began constructing 5G networks. Initial deployments focused on dense urban areas, operating in the 2-6 GHz spectrum. Millimeter-wave and massive Multiple Input-Multiple Output (M-MIMO) technologies were integrated, while network slicing supported mission-critical solutions [1]. The 5G era prioritized services like high-definition video streaming, Internet Protocol television, and enhanced data services. However, certain cutting-edge technologies were not incorporated due to experimental verification needs, high costs, and limited demand. Looking toward the future, scholars are beginning to outline the contours of 6G, prioritizing factors such as battery life and categories of service rather than just data speed and response times. In the period following 5G, the focus is on the potential of circuit and device production to establish a comprehensive research feedback cycle. Forecasts  
Figure 1: Communication networks evolution: 1G to a speculative 6G is observed through the lens of user experience. for the 2030s envision innovations such as holographic communication, airborne network systems, remote-controlled driving, and the tactile Internet. The shift toward network decentralization using blockchain technology is highlighted as crucial for streamlining the management of 6G networks. Emphasizing a human-centric approach to services is suggested as a central theme [1]. Benchmarks for performance and a hypothetical comparison between 5G and 6G have been articulated. Studies on tangible applications encompass diverse access methods, communication interfaces, and computational hubs for 6G networks. The designs for networking emphasize a non-cellular framework, distributed resources management, and extensive three-dimensional connectivity within 6G infrastructures. Investigations into machine-type communications (MTCs) and tailored wireless solutions for various industries propose that 6G has the potential to supplant current specialized standards in the industry [1]. Terahertz communications, AI, and reconfigurable intelligent surfaces stand out as revolutionary 6G technologies. Terahertz communication details technological overviews, practical demonstrations, and transmitter-receiver designs. Artificial intelligence (AI)-driven 6G technology is anticipated to bring about capabilities such as autonomous aggregation, situational awareness, and spontaneous configuration. The concept of reconfigurable intelligent surfaces is seen as the next evolution of massive MIMO technology in 6G, integrating index modulation to enhance spectral efficiency.