What type of frequency is used by Wi-Fi technologies in unlicensed spectrum?

Wi-Fi technologies operate in unlicensed spectrum to enable wireless communication, and this unlicensed spectrum refers to frequency bands that are available for public use without requiring a specific license. This characteristic allows a variety of devices, including routers and wireless access points, to operate in the same frequency ranges, fostering innovation and accessibility in networking technologies.

The frequencies commonly used for Wi-Fi, such as the 2.4 GHz and 5 GHz bands, are designated for use by anyone, which means that multiple manufacturers and service providers can develop compatible devices and technologies. This encourages competition and helps to lower costs for consumers, as multiple vendors can contribute to the ecosystem.

In contrast, frequencies that are considered publicly reserved or commercially exclusive usually entail specific regulations or licensing fees that restrict access to a select group of users or applications, which would not apply to Wi-Fi. Similarly, frequencies designated for the private sector only would not allow for the open access required for widespread Wi-Fi deployment.

This open, unlicensed status of Wi-Fi frequencies is essential for its ubiquity and effectiveness as a communication method in a variety of environments, from homes to public places.