  Smart building (SB), a promising solution to fast-paced and continuous
urbanization around the world, includes the integration of a wide range of
systems and services and involves the construction of multiple layers. SB is
capable of sensing, acquiring, and processing a very large amount of data as
well as performing appropriate actions and adaptation. Rapid increases in the
number of connected nodes and thereby the data transmission demand of SB have
led to conventional transmission and processing techniques becoming
insufficient to provide satisfactory services. In order to enhance the
intelligence of SBs and achieve efficient monitoring and control, sixth
generation (6G) communication technologies, particularly indoor visible light
communications (VLC) and machine learning (ML), are required to be incorporated
in SBs. Herein, we envision a novel SB framework featuring a reliable data
transmission network, powerful data processing, and reasoning abilities, all of
which are enabled by 6G communications. Primary simulation results support the
promising visions of the proposed SB framework.
