"The sixth-generation (6G) of wireless cellular networks is expected to incorporate the latest developments in network infrastructure and emerging advances in technology. 6G will not only explore more spectrum at high-frequency bands but also converge driving technological trends, including connected robotics, artificial intelligence (AI), and blockchain technologies. There is also a strong notion that the nature of mobile terminals will change, whereby intelligent mobile robots are anticipated to play a more important role. Importantly, 6G will become more human-centered than 5G, which primarily focused on industry verticals"--