Fecha de publicación: 11/12/2020 Fuente: Wipo "IOT" An IoT network architecture and wavelength division IoT gateway device is provided in the invention includes an optical de-multiplexer and an optical multiplexer that use wavelengths for multiplexing,such that information from different sources can be transmitted on the same optical fiber at different wavelengths in an optical network, thereby greatly improving bandwidth benefits of network information transmission and communication capacity of the gateway device so as to fulfill increasing local communication service requirements and further enhance IoT applications.