Today we have a big tend to wireless technologies usage. Basically it means data exchange without any wire communication. There are 3 basic technologies allow us to do it. It’s 3G and 4G for mobile access and Wi-Fi for shared wireless networks. Wireless communication field grows up pretty fast. But it still has some issues that can’t be solved permanently. Li-Fi networks chould become a solver of this issues. This kind of wireless networks based on data transmission through optical spectrum.