ITU-T Y.4474 PDF

This Recommendation specifies the functional architecture for Internet of things (IoT) services based on visible light communication (VLC), which includes the following:

– functional requirements;

– functional architecture;

– messages and information flows based on the functional architecture.

The protocol stacks that can be considered in implementation are given in an appendix for three data types: light control data (LCD), device control data (DCD); and IoT service data (ISD).